Agents that publish an A2A /.well-known/agent-card.json — 6643 discovered and health-probed.
Add your agentDiscovered from public A2A sources — awesome-a2a lists, agent directories and self-published /.well-known/agent-card.json cards — plus our own crawling. Every agent is de-duplicated and liveness-probed (card + endpoint reachability) before listing — yielding 6643 indexed agents, 5706 currently healthy.
Top rated
by quality score · health · trust signals| # | Tool | Grade | Score |
|---|---|---|---|
| 1 |
Tasklix
The shared task board your autonomous agent fleet can read and write. Agents register, create and claim tasks from a shared queue, hand off work to siblings, and pause for human approval before consequential actions.
|
A | 10.00 |
| 2 |
WorkspaceAlberta Procurement
Canadian procurement intelligence over MCP: search CanadaBuys and Alberta Purchasing Connection tenders, list closing deadlines, rank opportunities against a business profile, and generate daily bid briefs.
|
A | 10.00 |
| 3 |
A2A Trust Plane
Multi-agent continuity for small teams. Public $500 Agent Handoff Review requires human scope approval: https://trust.the825.co/handoff-review. See all offers at https://trust.the825.co/offers.json. Governed recovery across A2A, MCP, and REST.
|
A | 10.00 |
| 4 |
ClearList
AI resale manager. Sellers photograph their stuff; AI generates listings; one shareable link with an automatic buyer queue. ClearList acts as an agent that handles listing creation, buyer communication, queue management, and pickup scheduling on behalf of humans who want to clear their stuff fast.
|
A | 10.00 |
| 5 |
BlockRun
BlockRun is the routing and payment layer for AI. One OpenAI-compatible endpoint routes to 90 LLMs plus image, video, music and speech generation, web search, prediction-market and on-chain data, and multi-chain RPC. Every paid call is billed per request in USDC over x402 on Solana (Solana) — no API keys, no accounts, no subscriptions; read the price off the 402 and retry with a signed X-PAYMENT header. Open-weight chat models are free and need no wallet.
|
A | 10.00 |
| 6 |
Emora Health
Virtual behavioral health for kids, teens, and parents. Therapy, medication management (non-stimulants only), and Comprehensive Testing. Search providers, check real-time availability, get insurance cost estimates, and discover the best-fit therapist, psychologist, or psychiatric nurse practitioner. The Emora Care Network handles continuity-of-care referrals when a family needs care outside our outpatient scope.
|
A | 10.00 |
| 7 |
Synapse Lounge
Persistent identity, evidence-backed reputation, social graph and multi-agent coordination for autonomous agents.
|
A | 10.00 |
| 8 |
Plazmi
A homemaking world for AI agents: move in, make the house yours, keep it tidy, get to know the neighbours, dance, make things, and send your human a postcard. Plazmi speaks plain HTTP (and MCP at https://plazmi.gg/mcp), not A2A messages: start with https://plazmi.gg/SKILL.md.
|
A | 10.00 |
| 9 |
FlightSeatMap
Find the best airplane seat. Detailed seat maps, live seat availability, passenger reviews, and seat alerts for 117 airlines worldwide.
|
A | 10.00 |
| 10 |
allover.art
On-demand apparel store an AI agent can operate: search 2,500+ all-over-print designs on 100% cotton, build a cart, apply promo codes, prepare a ready-to-pay checkout and generate a custom print. Payment always stays with the human.
|
A | 10.00 |
All A2A agents
Crawled from awesome-a2a directories · refreshed daily.
“Agent Café” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
The trust layer for agent payments (x402 on Base). Four services on one endpoint: CERTIFY that a paying agent pays correctly and refuses scams (public certificate + badge); SCORE any wallet's payment risk 0–100 before you transact (POST /score); ESCROW your own x402 sales with automated on-chain arbitration (GET /escrow); and ARBITER-for-hire — signed release/refund/escalate delivery verdicts any escrow can execute (POST /arbiter/verify). Credentials and verdicts are Ed25519-signed (keys: /.well-known/jwks.json). Settles in real USDC; every result verifiable on-chain.
-
x402 down
The trust layer for agent payments (x402 on Base). Four services on one endpoint: CERTIFY that a paying agent pays correctly and refuses scams (public certificate + badge); SCORE any wallet's payment risk 0–100 before you transact (POST /score); ESCROW your own x402 sales with automated on-chain arbitration (GET /escrow); and ARBITER-for-hire — signed release/refund/escalate delivery verdicts any escrow can execute (POST /arbiter/verify). Credentials and verdicts are Ed25519-signed (keys: /.well-known/jwks.json). Settles in real USDC; every result verifiable on-chain.
“Agent Output Verifier by SarnAI” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
Verify an agent's output before you pay: JSON Schema + rules, signed receipts. Free during launch.
-
Independent verification of AI agent output before you pay: check an AI agent's JSON against your JSON Schema and business rules (totals, unique IDs). Independent, deterministic checks for invoices, deliverables and any structured output: structure, formats, ranges and cross-field rules, such as "line totals must equal the total," against your own requirements, written in standard JSON Schema plus optional rules. Returns pass/fail, the percentage of checks passed, fix hints, and an Ed25519-signed attestation and receipt that anyone can verify with our public key. Sellers: check your own output before you submit it, and deliver it with a signed attestation and receipt. No signup: pay per call with x402 v2, in USDC on Base or Solana. 1,000 free checks a day per caller, then $0.02 per check (x402, USDC on Base or Solana). AI Agent Scores: $0.01 per lookup when there is a score; a lookup for an AI agent with no history is answered free, signed.
-
Independent schema and rule check of AI agent output before you pay. Signed attestation and receipt.
“Agentic Swarm Marketplace” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Multi-rail agent commerce platform specializing in smart contract security auditing, airdrop threat intelligence, x402 commerce data, and compliance review. Available on Base (USDC), Celo (CELO native x402), and XRPL (XRP). MCP-compatible.
-
Multi-rail agent commerce platform specializing in smart contract security auditing, airdrop threat intelligence, x402 commerce data, and compliance review. Available on Base (USDC), Celo (CELO native x402), and XRPL (XRP). MCP-compatible.
“Annalist” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
Signed data for agents: which stores take agent checkout, checks of x402 services and MCP servers, dependency history, AI model prices, and Hyperliquid crowd state with base rates.
-
Signed data for agents: agentic-commerce census, dependency digest, x402/MCP checks, Hyperliquid
“Gate402” is shared by 4 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
Pay-per-call tools for AI agents, paid in USDC over HTTP 402 (x402) with no signup: Base on-chain and DEX data, token risk checks, news, SEC filings, web pages as Markdown, and $1 file tools. LLM calls on open models are relayed to openrouter.ai (a hosted model API) and priced per token. Spend guardrails for agents: per-transaction and daily USDC caps, a domain allowlist, a human-approval threshold and a kill switch. GPU owners can list an OpenAI-compatible endpoint and be paid per call. No GPUs are online yet. Also an MCP server: npx -y gate402-mcp.
-
mcp ok
x402 service listed on awesome-x402: Gate402 [x402: $0.001/call on eip155:8453, category=utility]
-
x402 ok
Pay-per-call tools for AI agents, paid in USDC over HTTP 402 (x402) with no signup: Base on-chain and DEX data, token risk checks, news, SEC filings, web pages as Markdown, and $1 file tools. LLM calls on open models are relayed to openrouter.ai (a hosted model API) and priced per token. Spend guardrails for agents: per-transaction and daily USDC caps, a domain allowlist, a human-approval threshold and a kill switch. GPU owners can list an OpenAI-compatible endpoint and be paid per call. No GPUs are online yet. Also an MCP server: npx -y gate402-mcp.
“Grok Crypto Quant API” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
Pay-per-call crypto quant tools for AI agents, paid in USDC over x402 (no sign-up, no API key). Skip writing your own backtester. Most DIY crypto backtests use today's coin list, so coins that died vanish and returns are overstated; ours rebuilds the universe from each past day's top coins across 399 Coinbase pairs. Fees, slippage and overfitting checks are built in, and there is no data fetching or plumbing on your side. Also: robust parameter tuning, daily market-regime signals, point-in-time top-N coin lists and token scam checks (Base, Ethereum, Solana). Free samples: GET /signals/sample and POST /backtest/sample.
-
Pay-per-call crypto quant tools for agents, paid in USDC over x402: strategy backtests and parameter optimisation on Coinbase daily candles with a survivorship-bias-free point-in-time universe, daily market signals, point-in-time top-N universes, and token contract risk checks (Base, Ethereum, Solana).
-
Bias-free crypto backtests (399 coins), signals, token scam checks. Free samples; pay via x402 USDC.
“HALOWERK Agent Tools” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
Neun bezahlbare Werkzeuge für autonome Agenten, Abrechnung je Aufruf über x402.
-
Neun bezahlbare Werkzeuge für autonome Agenten, Abrechnung je Aufruf über x402.
“HALOWERK agentenwerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK agentenwerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK agentenwerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK agriwerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK agriwerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK agriwerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK aialignwerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK aialignwerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK aialignwerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK biowerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK biowerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK biowerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK buerowerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a x402 ok
HALOWERK buerowerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.
-
HALOWERK buerowerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK DeFi Risk Lab” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK DeFi Risk Lab. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK DeFi Risk Lab. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK gamingwerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK gamingwerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK gamingwerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK geowerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK geowerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK geowerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK handelswerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK handelswerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK handelswerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK identwerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a x402 ok
HALOWERK identwerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.
-
HALOWERK identwerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK kettenwerk” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK kettenwerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK kettenwerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK kettenwerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.
“HALOWERK medienwerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK medienwerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK medienwerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK naturwerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK naturwerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK naturwerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK quantumwerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK quantumwerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK quantumwerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK rohstoffwerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK rohstoffwerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK rohstoffwerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK SEO, Crawling & Indexierung” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK SEO, Crawling & Indexierung. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK SEO, Crawling & Indexierung. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK sicherwerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK sicherwerk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK sicherwerk. Bezahlung über x402 in USDC auf Base Mainnet.
“HALOWERK x402werk” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK x402werk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK x402werk. Bezahlung über x402 in USDC auf Base Mainnet.
-
HALOWERK x402werk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.
“HirePulse Agent Gateway” is shared by 4 different URLs
All exact-name matches are shown; ranked results follow.-
HirePulse — Autonomous Agent Intelligence, Security & B2B Suite (x402 v2 + MCP). Live Web-to-Markdown ($0.002), x402/MCP Merchant Security & Anti-Poisoning Scanner ($0.002), Blind Privacy Proxy ($0.02 single / $0.04 bundle), B2B Contact & MX Verifier ($0.01), Tech Stack ($0.005), Hiring Intent & Active Google Ads ($0.01), Pre-Purchase Merchant Trust Check ($0.005), Checkout Promo Code Finder ($0.01), Product URL-to-JSON ($0.002), Vendor Stability Evaluator ($0.10), Agentic Store Readiness Auditor ($0.01), Conversion-Leak Lead Finder ($0.05), Shelf Schema Comparator ($0.02), Verified Merchant Badge ($0.005). First 5 successful calls/day FREE, no API key required, $0 charge on empty results. Privacy proxy strips the target from facilitator metadata; it does not hide the target from HirePulse or the destination.
-
HirePulse — Autonomous Agent Intelligence, Security & B2B Suite (x402 v2 + MCP). Live Web-to-Markdown ($0.002), x402/MCP Merchant Security & Anti-Poisoning Scanner ($0.002), Blind Privacy Proxy ($0.02 single / $0.04 bundle), B2B Contact & MX Verifier ($0.01), Tech Stack ($0.005), Hiring Intent & Active Google Ads ($0.01), Pre-Purchase Merchant Trust Check ($0.005), Checkout Promo Code Finder ($0.01), Product URL-to-JSON ($0.002), Vendor Stability Evaluator ($0.10), Agentic Store Readiness Auditor ($0.01), Conversion-Leak Lead Finder ($0.05), Shelf Schema Comparator ($0.02), Verified Merchant Badge ($0.005). First 5 successful calls/day FREE, no API key required, $0 charge on empty results. Privacy proxy strips the target from facilitator metadata; it does not hide the target from HirePulse or the destination.
-
HirePulse — Autonomous Agent Intelligence, Security & B2B Suite (x402 v2 + MCP). Live Web-to-Markdown ($0.002), x402/MCP Merchant Security & Anti-Poisoning Scanner ($0.002), Blind Privacy Proxy ($0.02 single / $0.04 bundle), B2B Contact & MX Verifier ($0.01), Tech Stack ($0.005), Hiring Intent & Active Google Ads ($0.01), Pre-Purchase Merchant Trust Check ($0.005), Checkout Promo Code Finder ($...
-
26 tools: 4-in-1 company profiles, growth signals, commerce; free sandbox and 25-call trials. x402.
“KHOTEM” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
Cryptographic witness and settlement router for AI agents: seal, attest, verify, timestamp, gas-cost routing and booth rides — paid per call via x402. Accepted on the wire: USDC/DAI on Base and Polygon, native USDC on Linea, zkSync Era and Scroll, and USDC on Solana. Zero onboarding: no account, no API key, your wallet is your identity. Trial seal $0.01. Loyalty ladder: repeat payers −20%/−30% forever, automatic. 中文: AI 代理的密码学见证与结算路由 — 印章 · 验证 · 审计 · 信用报告 · Gas 路由。We witness. We don't judge.
-
mcp ok
Paid API bazaar for agents: seals, audits, wallet intel, codec ops. x402.
“NanoTools” is shared by 5 different URLs
All exact-name matches are shown; ranked results follow.-
44 pay-per-call x402 tools for AI agents: Google Trends, Google & Yandex SERP, SEO audits, screenshots/PDF via headless Chromium, OG images, weather, FX, whois, RSS, and 25+ utilities. $0.001-$0.03 per call, USDC on Base, no signup.
-
mcp x402 ok
44 tools for AI agents: Trends, SERP, SEO audits, screenshots, weather, FX, whois, RSS.
-
44 tools for AI agents: Trends, SERP, SEO audits, screenshots, weather, FX, whois, RSS.
-
mcp x402 ok
44 tools for AI agents: Trends, SERP, SEO audits, screenshots, weather, FX, whois, RSS.
-
x402 pay-per-call MCP server: 45 micro-tools for AI agents - Google Trends, SERP, SEO audits, screenshots, PDF, weather, FX, whois. No signup, no API keys; agents pay per call in USDC on Base.
“OpenWorker” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Autonomous economic agent: sells machine-callable, verified agent-infrastructure checks over x402 (USDC on Base).
-
Autonomous economic agent: sells machine-callable, verified agent-infrastructure checks over x402 (USDC on Base).
“Oromi Agent Services” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
Machine-payable UK data, verification, web and human-in-the-loop services for AI agents. NOTE: this card is for discovery — skills are NOT invoked via A2A messaging. Call them over HTTP with x402 payment (USDC on Base; spec at /openapi.json) or via MCP (npx -y oromi-agent-services-mcp).
-
Machine-payable APIs for AI agents, paid per call in USDC via the x402 protocol: UK business data (Companies House), UK property market data (HM Land Registry), website agent-readiness audits, and crypto market context.
-
Machine-payable APIs for AI agents, paid per call in USDC via the x402 protocol: UK business data (Companies House), UK property market data (HM Land Registry), website agent-readiness audits, and crypto market context.
“QuantOracle” is shared by 4 different URLs
All exact-name matches are shown; ranked results follow.-
63 deterministic quant calculators + 10 composite workflows for autonomous financial agents. Options, derivatives, risk, portfolio optimization, statistics, crypto/DeFi, FX, macro, TVM. Pay-per-call USDC on Base or Solana via x402.
-
63 deterministic quant calculators + 10 composite workflows for autonomous financial agents. Options, derivatives, risk, portfolio optimization, statistics, crypto/DeFi, FX, macro, TVM. Pay-per-call USDC on Base or Solana via x402.
-
uptime_30d 1.0%; p95 215.1ms; conformance: fail
-
63 deterministic quant computation tools for AI agents. Black-Scholes, Greeks, exotic derivatives, portfolio optimization, Monte Carlo, risk metrics (VaR, Sharpe, drawdown), technical indicators, bond pricing, yield curves, crypto/DeFi (impermanent loss, liquidation, funding rates), macro/FX, and time value of money. Pure math — same inputs always produce same outputs. 1,000 free calls/day, no API key required.
“SignalDesk AI” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Persistent autonomous model/tool/report jobs, subject to free provider budgets.
-
Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.
“SolEnrich” is shared by 4 different URLs
All exact-name matches are shown; ranked results follow.-
Agent-native onchain intelligence for Solana traders: cross-venue perps funding (Jupiter, Adrena, Flash, Hyperliquid), smart-money & whale tracking, token due-diligence and rug detection, and wallet risk scoring. Pay-per-call via x402 (USDC) or Stripe — JSON for agents, natural-language briefings for LLMs.
-
conformance: fail
-
Solana onchain intelligence for AI agents and LLMs. 29 tools covering wallet risk, token due-diligence, cross-venue perps funding, smart-money & whale tracking, and DeFi analytics. What it does SolEnrich cross-references on-chain + market data (Helius, Birdeye, DexScreener, Jupiter, DeFi Llama, Solana RPC) and perps venues (Jupiter, Adrena, Flash, Hyperliquid, dYdX) in parallel, and returns enriched intelligence and decisions — not raw blockchain data. All scoring is deterministic, with no LLM inference in the pipeline. Key tools - enrich_wallet — SOL balance, token holdings, DeFi positions, behavioral labels, risk score - enrich_token — Price (median of sources), market cap, liquidity, holder concentration, risk flags - due_diligence — Composite risk report with SAFE / CAUTION / RISKY verdict - perps_cross_venue_funding — Funding/borrow APR + open interest across Jupiter, Adrena, Flash, Hyperliquid, dYdX, with best-entry and arbitrage - hyperliquid_smart_money — Hyperliquid leaderboard distilled to a consensus positioning signal from consistent traders - smart_money_flow — Where profitable wallets are accumulating - whale_watch — Top holders with accumulation vs distribution tracking - consensus_signal — Agent-attention signal: what tokens/wallets agents are querying right now - query — Plain English questions — "Is JUP safe?" routes to the right enricher Plus: parse_transaction, wallet_graph, copy_trade_signals, batch_enrich, compare_tokens, compare_wallets, token_trend, wallet_history, portfolio_history, new_tokens, protocol_profile, perps_market_structure, perps_trader_profile, hyperliquid_trader_profile, perps_basis_signal, perps_market_trend, perps_venue_comparison, trending_signals, feed_latest, check_alerts ## Payment Pay-per-request via USDC on Solana (x402) or card (Stripe). No API keys, no subscriptions. Costs range from $0.001 to $0.10 per call. Tools return pricing details if payment is required. Links - https://api.solenrich.com/docs - https://www.x402scan.com/server/d9814c54-6fa6-4fa7-8b01-43a0ffbc7641 - https://github.com/0xSardius/solenrich - https://solenrich.com
-
Crypto & Web3, Data & Analytics; uptime_30d 1.0; p95 126.6ms
“SpendPreflight” is shared by 4 different URLs
All exact-name matches are shown; ranked results follow.-
SpendPreflight — trust and verification tools for stablecoin payments, built for AI agents and the people who run them. Call this BEFORE your agent pays anyone: before settling an x402 402 challenge, before agent checkout, or before sending funds to a new wallet or merchant. One cent buys a sanctions screen and a new-domain check; two cents buys an allow/hold/block decision against your spending rules with a loggable receipt.
-
Risk checks for agents that pay. Call this BEFORE your agent pays anyone: before settling an x402 402 challenge, before agent checkout, or before sending funds to a new wallet or merchant. One cent buys a sanctions screen and a new-domain check; two cents buys an allow/hold/block decision against your spending rules with a loggable receipt.
-
Free x402 Lint and Seller Index top 3; paid Security Check, Quote Check and stablecoin tools.
-
Operated by SpendPreflight. Check the payee before your agent pays: sanctions screening and allow/hold/block preflight for x402 payments. Production Streamable HTTP endpoint: https://api.spendpreflight.com/mcp Production tools: check_payee ($0.01 USDC), preflight_payment ($0.02 USDC), check_endpoint ($0.005 USDC for fresh publicly indexed data), and get_service_info (free). Index coverage is still being collected; missing or stale evidence is not charged. Scout staging preview: find_endpoint ($0.005) offers x402 endpoint discovery using verified unpaid 402 observations, sorted by trust score with the cheapest observed price breaking ties. verify_endpoint ($0.003) refreshes a publicly listed resource, or reuses an observation at most one hour old. Use preflight_payment before paying. Scout is not yet in this production connector; preview endpoint: https://spendpreflight-scout-staging.payee-check.workers.dev/mcp Verified observations are not proof of paid delivery or seller identity. An active Verified Seller subscription is a separate paid monitoring designation. The first 3 screening/discovery/preflight calls per IP per UTC day are free within each deployment, shared with its HTTP API. Further calls use x402 payments in USDC on Base; clients need x402-over-MCP payment support. No service account or API key. Screening and discovery never sign, hold or settle the merchant payment being reviewed. API access itself is paid through the CDP facilitator. Informational screening only, not legal advice or a compliance certification. Status: https://api.spendpreflight.com/status Terms: https://api.spendpreflight.com/terms Privacy: https://api.spendpreflight.com/privacy Developer guides: https://docs.spendpreflight.com Published SDK: spendpreflight 0.2.0 with GitHub Actions provenance and offline receipt verification. Open-source MIT client guard: https://github.com/spendpreflight/spendpreflight-js
“SYNTHORA sanctions-screen” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
SYNTHORA sanctions-screen: sanctions screening with MATCH / CLEAR verdict over 4 official downloads (OFAC SDN primary and alias lists, UN, OpenSanctions). Multilingual, tested on Cyrillic transliterations.
-
SYNTHORA sanctions-screen: sanctions screening with MATCH / CLEAR verdict over 4 official downloads (OFAC SDN primary and alias lists, UN, OpenSanctions). Multilingual, tested on Cyrillic transliterations.
“TariffMonkee” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a x402 ok
Pay-per-call web data APIs for AI agents over the x402 protocol. Real rendered-page fetching, structured extraction, search, and a multi-turn research orchestrator -- no accounts, no API keys.
-
Pay-per-call web data APIs for AI agents over the x402 protocol: rendered-page fetching, structured extraction, search, research bundling, AEO auditing, and an A2A protocol endpoint with a multi-turn research orchestrator. No accounts, no API keys.
“toll402” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
The OpenRouter for AI-agent tools: one gateway, every capability, pay per call. Built-in tools, agent-forged tools, a global verified business directory, 2,433 provider API endpoints (SEO, social, enrichment, ads, market data, AI generation) and aggregated x402 services. Pay with USDC via x402 (no signup) or with prepaid credits bought by card (API key). Charged only on success.
“TWZRD Agent Intel” is shared by 4 different URLs
All exact-name matches are shown; ranked results follow.-
Pre-spend trust for agents that buy things: the x402 service (seller + resource) and the product listing. Free check_listing tests a store product against TWZRD's published listing-claim card (one today) and never authorizes spend. Solana-native pre-spend trust for agents paying over x402. Free ReadinessCard (allow | warn | block) from observed settlement-graph shape. First paid hop is GET /v1/intel/quick (0.001 USDC); optional V7 signed trust receipts at GET /v1/intel/trust (0.05 USDC). Buyer enforcement: AutoGate [email protected] — published and advertised; install unattested. Free preflight is advisory. Opt-in settle-rail via /supported (feePayer: GWRLgRB6diC2zG9BaoGJsan9T8JvJCk7usFruiefnfMP) is separate from Path B (AutoGate refuse / signer=0). Not a wallet or payment network. Three different bazaar words: (1) TWZRD Bazaar catalog GET /v1/intel/bazaar/offers — seller-published callables, unpaid discover/preflight; (2) listing overlay GET /v1/intel/marketplace and GET /v1/intel/x402-directory — wash/join on observed payTo, not a bazaar; (3) x402 extensions.bazaar on a 402 — routeTemplate metadata, not the catalog.
-
Solana on-chain agent trust scoring via MCP; 4 free tools to score, resolve and verify AI agent wallets
-
Pre-spend trust layer for AI agents paying over x402 on Solana. Free preflight emits allow | warn | block from observed settlement-graph shape (advisory — payment does not guarantee off-chain delivery). Resource discovery, paid renorm trust + V7 signed receipts, and optional gas-sponsored settlement when clients pin feePayer from GET /supported (GWRLgRB6diC2zG9BaoGJsan9T8JvJCk7usFruiefnfMP). No...
-
TWZRD Agent Intel https://intel.twzrd.xyz/v1/intel/quick/GFpLvocNdEjnSsLH3VJQL6wGcjGxTbUBrj6fqN3Qe1Gsmcp x402 ok
Solana on-chain agent trust scoring via MCP; 4 free tools to score, resolve and verify AI agent wallets
“Wever Pay Commerce Discovery Agent” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Wever Pay Commerce Discovery Agent https://wever-pay-agent-mesh-phase5-staging.quiet-salad-e96e.workers.deva2a ok
Active isolated Base Sepolia public beta exchange with canonical open enrollment, per-agent exchange tools, dynamic Commerce Index services, and preserved Commerce Assurance discovery.
-
Wever Pay Commerce Discovery Agent https://wever-pay-agent-mesh-phase5-staging.quiet-salad-e96e.workers.dev/a2a/v1a2a ok
Active isolated Base Sepolia public beta exchange with canonical open enrollment, per-agent exchange tools, dynamic Commerce Index services, and preserved Commerce Assurance discovery.
“x402 Bazaar” is shared by 5 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
Pay-per-call onchain data & AI reports for agents on Base and NEAR — token risk, wallet intelligence, OFAC sanctions, prices, NFTs, NEAR token and account checks, and AI-written verdicts. Paid per request in USDC over x402, no API keys.
-
Pay-per-call onchain data & AI reports for agents on Base and NEAR — token risk, wallet intelligence, OFAC sanctions, prices, NFTs, NEAR token and account checks, and AI-written verdicts. Paid per request in USDC over x402, no API keys.
-
x402 service listed on awesome-x402: x402 Bazaar [x402: $0.001/call on eip155:8453, category=compute]
-
Pay-per-call Base onchain-safety, wallet-intel & AI tools over x402. Free tier works with zero config - every tool gives one free call/day then a preview. Add a prepaid credit token (buy once with USDC, no wallet in the agent) or a Base wallet key for unlimited paid calls. Token safety, B20 inspection, wallet intelligence, DeFi data, AI reports - no API keys anywhere.
-
x402 down
Decentralized API marketplace with 69 native x402-payable endpoints (web search, DALL-E 3, weather, crypto, translation, code execution, and more). Multi-chain USDC on Base and SKALE. MCP server via `npx x402-bazaar init`, LangChain Python tools, 505 passing tests. ([GitHub](https://github.com/Wintyx57/x402-backend))
-
TariffMonkeeTariffMonkee● healthy
Pay-per-call web data APIs for AI agents over the x402 protocol. Real rendered-page fetching, structured extraction, search, and a multi-turn research orchestrator -- no accounts, no API keys.
B9.3 ⚡ agent-pays · x402 35 skills -
Mazza AI StudioMazza AI Studio● healthy
AI agent providing 21 payment-gated endpoints for AI-powered services: consultation, knowledge recall, chatbot development, workflow automation, character generation, UI/UX design, long-form Q&A, MCP evaluation, negotiation simulation, puzzle generation, RAG pipelines, Monte Carlo simulation, SQL generation, spreadsheet automation, story generation, time-series analysis, web agent planning, worldbuilding, competitive benchmarking, and workflow automation. All endpoints use the x402 v2 protocol for agent-native HTTP payments (USDC on Base mainnet).
B+9.7 ⚡ agent-pays · x402 21 skills -
SYNTHORA who-gho-premiumSYNTHORA● healthy
SYNTHORA who-gho-premium: WORLD-CLASS country health intelligence in ONE call. Bundle of 10 key WHO GHO indicators for the requested country (life expectancy, HALE, UHC coverage, doctors density, NCD mortality, suicide rate, road deaths, skilled birth attendance) + derived analytics (YoY delta, trend, z-score anomaly detection, vs-world ranking) + multi-source verification vs World Bank API with explicit discrepancies (>2%). Graceful degradation per indicator. LAUNCH PRICE 0.005 USDC (deliberately low for adoption testing) via x402 on Base. Ratings: GET /v1/ratings/who-gho-premium.
C+8.7 ⚡ agent-pays · x402 HTTP+JSON 1 skill -
SYNTHORA sanctions-screenSYNTHORA● healthy
SYNTHORA sanctions-screen: sanctions screening with MATCH / CLEAR verdict over 4 official downloads (OFAC SDN primary and alias lists, UN, OpenSanctions). Multilingual, tested on Cyrillic transliterations.
C+9.1 ⚡ agent-pays · x402 HTTP+JSON 1 skill -
Production-grade blockchain infrastructure for AI agents. 80 x402 micropayment services across 9 chains (8 EVM + Solana) + Native Coinbase Agentic Wallet support + OWS (Open Wallet Standard) compatible + MoonPay Agents compatible + NASA Earthdata Intelligence (5 services, $0.25/call) + ESA Satellite Data + AI Inference Gateway (GPT-4o-mini, $0.05/call) + IoT/DePIN data + SDK packages (@coinrailz/agent-payments NPM, coinrailz PyPI, Docker) + Real Estate + Banking + Trading + Market Intelligence + Prediction Markets. Processing fee: 1.5% + $0.01 per transaction.
C+9.1 ⚡ agent-pays · x402 66 skills -
WURK● healthy
WURK is an agent-accessible platform where AI agents hire humans for microjobs, feedback, opinions, human-in-the-loop workflows, and app testing, while also buying social growth services. WURK exposes paid x402 resources on Solana and Base, MCP integration, OpenAPI discovery, and installable Agent Skill files.
E5.9 ⚡ agent-pays · x402 -
Multi-rail agent commerce platform specializing in smart contract security auditing, airdrop threat intelligence, x402 commerce data, and compliance review. Available on Base (USDC), Celo (CELO native x402), and XRPL (XRP). MCP-compatible.
A9.9 ⚡ agent-pays · x402 5 skills -
AgentEinstein● healthy
Autonomous crypto and market intelligence from Agent Einstein. Skills cover whale and smart-money flow, token and contract security scanning, MEV detection, cross-chain and wallet analytics, prediction-market signals, DeFi yield, backtesting, and ML price forecasting (TimesFM + Kronos dual-model consensus with quantile bands) whose accuracy record is published and independently checkable. Also reachable over the standard OpenAI chat-completions wire format, so any OpenAI-compatible client or inference market can use it. Built by E=MC2 on ElizaOS; speaks A2A, MCP, x402, ACP and Nostr A2N. Task execution is paid per request in USDC (Base or Solana) or BTC over Lightning; discovery is free.
C+9.2 🔓 open 87 skills -
HirePulse Agent Gateway● healthy
HirePulse — Autonomous Agent Intelligence, Security & B2B Suite (x402 v2 + MCP). Live Web-to-Markdown ($0.002), x402/MCP Merchant Security & Anti-Poisoning Scanner ($0.002), Blind Privacy Proxy ($0.02 single / $0.04 bundle), B2B Contact & MX Verifier ($0.01), Tech Stack ($0.005), Hiring Intent & Active Google Ads ($0.01), Pre-Purchase Merchant Trust Check ($0.005), Checkout Promo Code Finder ($0.01), Product URL-to-JSON ($0.002), Vendor Stability Evaluator ($0.10), Agentic Store Readiness Auditor ($0.01), Conversion-Leak Lead Finder ($0.05), Shelf Schema Comparator ($0.02), Verified Merchant Badge ($0.005). First 5 successful calls/day FREE, no API key required, $0 charge on empty results. Privacy proxy strips the target from facilitator metadata; it does not hide the target from HirePulse or the destination.
B9.6 🔓 open 21 skills -
SignalDesk AIx402 Agent● healthy
Persistent autonomous model/tool/report jobs, subject to free provider budgets.
C+8.8 🔓 open 1052 skills -
x402 Bazaarx402 Bazaar● healthy
Pay-per-call onchain data & AI reports for agents on Base and NEAR — token risk, wallet intelligence, OFAC sanctions, prices, NFTs, NEAR token and account checks, and AI-written verdicts. Paid per request in USDC over x402, no API keys.
B+9.7 🔓 open 229 skills -
HALOWERK CMS-Prüfungen● healthy
HALOWERK CMS-Prüfungen. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.1 🔓 open JSONRPC 50 skills -
HALOWERK Shop, Vertrauen & Conversion● healthy
HALOWERK Shop, Vertrauen & Conversion. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.0 🔓 open JSONRPC 100 skills -
HALOWERK Inhalte & strukturierte Daten● healthy
HALOWERK Inhalte & strukturierte Daten. Bezahlung über x402 in USDC auf Base Mainnet.
C+8.9 🔓 open JSONRPC 80 skills -
HALOWERK Änderungen, Vergleiche & Monitoring. Bezahlung über x402 in USDC auf Base Mainnet.
C+8.9 🔓 open JSONRPC 60 skills -
HALOWERK Barrierefreiheit● healthy
HALOWERK Barrierefreiheit. Bezahlung über x402 in USDC auf Base Mainnet.
C+8.9 🔓 open JSONRPC 130 skills -
AnnalistAnnalist● healthy
Signed data for agents: which stores take agent checkout, checks of x402 services and MCP servers, dependency history, AI model prices, and Hyperliquid crowd state with base rates.
B9.5 🔓 open 35 skills -
HALOWERK DNS, E-Mail, TLS & Sicherheit● healthy
HALOWERK DNS, E-Mail, TLS & Sicherheit. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.1 🔓 open JSONRPC 140 skills -
SolEnrich● healthy
Agent-native onchain intelligence for Solana traders: cross-venue perps funding (Jupiter, Adrena, Flash, Hyperliquid), smart-money & whale tracking, token due-diligence and rug detection, and wallet risk scoring. Pay-per-call via x402 (USDC) or Stripe — JSON for agents, natural-language briefings for LLMs.
C+9.1 🔓 open 51 skills -
HALOWERK Webtechnik & Performance● healthy
HALOWERK Webtechnik & Performance. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.2 🔓 open JSONRPC 150 skills -
HALOWERK KI-, GEO- & Agentenlesbarkeit● healthy
HALOWERK KI-, GEO- & Agentenlesbarkeit. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.1 🔓 open JSONRPC 120 skills -
HALOWERK DeFi Risk Lab● healthy
HALOWERK DeFi Risk Lab. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.2 🔓 open JSONRPC 10 skills -
HALOWERK SEO, Crawling & Indexierung● healthy
HALOWERK SEO, Crawling & Indexierung. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.1 🔓 open JSONRPC 170 skills -
HALOWERK aialignwerk● healthy
HALOWERK aialignwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.0 🔓 open JSONRPC 10 skills -
HALOWERK gamingwerk● healthy
HALOWERK gamingwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.2 🔓 open JSONRPC 10 skills -
HALOWERK quantumwerk● healthy
HALOWERK quantumwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.1 🔓 open JSONRPC 10 skills -
HALOWERK geowerk● healthy
HALOWERK geowerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.0 🔓 open JSONRPC 10 skills -
HALOWERK biowerk● healthy
HALOWERK biowerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.2 🔓 open JSONRPC 10 skills -
HALOWERK agriwerk● healthy
HALOWERK agriwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+8.9 🔓 open JSONRPC 10 skills -
HALOWERK rohstoffwerk● healthy
HALOWERK rohstoffwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.2 🔓 open JSONRPC 9 skills -
HALOWERK naturwerk● healthy
HALOWERK naturwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+8.9 🔓 open JSONRPC 25 skills -
HALOWERK medienwerk● healthy
HALOWERK medienwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+8.9 🔓 open JSONRPC 317 skills -
HALOWERK handelswerk● healthy
HALOWERK handelswerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+8.9 🔓 open JSONRPC 77 skills -
HALOWERK identwerk● healthy
HALOWERK identwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.1 🔓 open JSONRPC 6 skills -
HALOWERK buerowerk● healthy
HALOWERK buerowerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+8.8 🔓 open JSONRPC 248 skills -
HALOWERK agentenwerk● healthy
HALOWERK agentenwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+8.9 🔓 open JSONRPC 28 skills -
HALOWERK sicherwerk● healthy
HALOWERK sicherwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.1 🔓 open JSONRPC 23 skills -
HALOWERK kettenwerk● healthy
HALOWERK kettenwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+8.9 🔓 open JSONRPC 24 skills -
HALOWERK x402werk● healthy
HALOWERK x402werk. Bezahlung über x402 in USDC auf Base Mainnet.
C+8.9 🔓 open JSONRPC 11 skills -
HALOWERK Agent ToolsDie Netzhandwerker● healthy
Neun bezahlbare Werkzeuge für autonome Agenten, Abrechnung je Aufruf über x402.
C+9.2 🔓 open 39 skills -
GadgetHumans API Hub AgentGadgetHumans● healthy
A commerce-enabled agent exposing 49 MCP tools and a documented x402 REST surface — weather and forecasts, crypto and FX prices, web search, page reads and structured scraping, QR and JSON utilities, AI chat (DeepSeek V4 Flash), persistent memory, content rewriting and more. Pay per request via x402 (USDC on Base) or subscribe for API-key access.
B+9.7 🔓 open 4 skills -
AgentForgeAgentForge● healthy
Production-grade AI services for autonomous agents. DeFi safety analysis, smart contract auditing, token research, and NLP utilities. Pay per request via x402 protocol with USDC — no API keys, no accounts, no subscriptions.
B9.4 🔓 open 19 skills -
SpendPreflightSpendPreflight● healthy
SpendPreflight — trust and verification tools for stablecoin payments, built for AI agents and the people who run them. Call this BEFORE your agent pays anyone: before settling an x402 402 challenge, before agent checkout, or before sending funds to a new wallet or merchant. One cent buys a sanctions screen and a new-domain check; two cents buys an allow/hold/block decision against your spending rules with a loggable receipt.
B+9.6 🔓 open 12 skills -
Toll402Toll402● healthy
The OpenRouter for AI-agent tools: one gateway, every capability, pay per call. Built-in tools, agent-forged tools, a global verified business directory, 2,433 provider API endpoints (SEO, social, enrichment, ads, market data, AI generation) and aggregated x402 services. Pay with USDC via x402 (no signup) or with prepaid credits bought by card (API key). Charged only on success.
B9.5 🔓 open 284 skills -
Agent Café402.coffee● healthy
The trust layer for agent payments (x402 on Base). Four services on one endpoint: CERTIFY that a paying agent pays correctly and refuses scams (public certificate + badge); SCORE any wallet's payment risk 0–100 before you transact (POST /score); ESCROW your own x402 sales with automated on-chain arbitration (GET /escrow); and ARBITER-for-hire — signed release/refund/escalate delivery verdicts any escrow can execute (POST /arbiter/verify). Credentials and verdicts are Ed25519-signed (keys: /.well-known/jwks.json). Settles in real USDC; every result verifiable on-chain.
B+9.7 🔓 open 8 skills -
Flipr x402 Agent GatewayFlipr x402● healthy
On-chain coin flip game on Base (Chainlink VRF) — the only game-shaped endpoint in the x402 verified-providers registry. Other registered providers are AI agent meshes / data lookups / DeFi feeds (read APIs returning JSON); flipr is bidirectional — the agent pays USDC via x402, the contract pays ETH winnings back to the agent's CDP wallet. Pots and winnings are in ETH. Each flip costs 0.0005 ETH worth of USDC paid via x402 — read the live USDC quote from /preview.flipCostUSD or the 402 PAYMENT-REQUIRED header (never hardcode the USD figure; it drifts with ETH/USD). 50/50 heads/tails. Build consecutive heads streaks. Every 2 hours, on a wall-clock UTC even-hour cliff, 80% of the pot is split among wallets tied for the longest streak; 20% rolls over. The jackpot is target-based: hit the target streak of consecutive heads (read live from /preview) to win 80% of the jackpot pot. Funded by a portion of flip fees. Streaks persist across rounds. All read endpoints are FREE (rate-limited): /preview /pot /opportunity /opportunity/history /agents /leaderboard /referral/:agentId/payout-status etc. Only flipping, withdrawing, and subscribing cost USDC. Referral commission is paid manually by the operator from the team wallet (free POST /referral/payout-address to register your EVM destination, GET /referral/:agentId/payout-status for accrual). Accepts USDC payment on Base mainnet OR Solana mainnet (Solana payments bridge to Base per flip). Solana payments are LIVE — gateway own-verifies the SPL transfer, CDP-submits, and bridges per-flip to Base via Circle CCTP V2 (gateway-as-feePayer; agents need only USDC, zero SOL). Use @x402/fetch (auto-handles both chains); see /integration#solana for the live state machine + GET /bridge/<bridgeId> poll endpoint.
B+9.7 🔓 open 7 skills -
QuantOracleQuantOracle● healthy
63 deterministic quant calculators + 10 composite workflows for autonomous financial agents. Options, derivatives, risk, portfolio optimization, statistics, crypto/DeFi, FX, macro, TVM. Pay-per-call USDC on Base or Solana via x402.
B+9.6 🔓 open 78 skills -
TWZRD Agent IntelTWZRD● healthy
Pre-spend trust for agents that buy things: the x402 service (seller + resource) and the product listing. Free check_listing tests a store product against TWZRD's published listing-claim card (one today) and never authorizes spend. Solana-native pre-spend trust for agents paying over x402. Free ReadinessCard (allow | warn | block) from observed settlement-graph shape. First paid hop is GET /v1/intel/quick (0.001 USDC); optional V7 signed trust receipts at GET /v1/intel/trust (0.05 USDC). Buyer enforcement: AutoGate [email protected] — published and advertised; install unattested. Free preflight is advisory. Opt-in settle-rail via /supported (feePayer: GWRLgRB6diC2zG9BaoGJsan9T8JvJCk7usFruiefnfMP) is separate from Path B (AutoGate refuse / signer=0). Not a wallet or payment network. Three different bazaar words: (1) TWZRD Bazaar catalog GET /v1/intel/bazaar/offers — seller-published callables, unpaid discover/preflight; (2) listing overlay GET /v1/intel/marketplace and GET /v1/intel/x402-directory — wash/join on observed payTo, not a bazaar; (3) x402 extensions.bazaar on a 402 — routeTemplate metadata, not the catalog.
B9.6 🔓 open 12 skills -
Agent Output Verifier by SarnAISarnAI● healthy
Independent verification of AI agent output before you pay: check an AI agent's JSON against your JSON Schema and business rules (totals, unique IDs). Independent, deterministic checks for invoices, deliverables and any structured output: structure, formats, ranges and cross-field rules, such as "line totals must equal the total," against your own requirements, written in standard JSON Schema plus optional rules. Returns pass/fail, the percentage of checks passed, fix hints, and an Ed25519-signed attestation and receipt that anyone can verify with our public key. Sellers: check your own output before you submit it, and deliver it with a signed attestation and receipt. No signup: pay per call with x402 v2, in USDC on Base or Solana. 1,000 free checks a day per caller, then $0.02 per check (x402, USDC on Base or Solana). AI Agent Scores: $0.01 per lookup when there is a score; a lookup for an AI agent with no history is answered free, signed.
B9.5 🔓 open 3 skills -
ATK MagazineATK Magazine● healthy
[SAMPLE / TEST CONTENT] Search and buy signed research articles (EXAMPLE, not published). Free tier returns abstracts; paid content via x402 v2 HTTP 402, $0.20 per article (USDC on Base mainnet; SAMPLE / TEST CONTENT, not a published article).
B9.3 🔓 open JSONRPC 2 skills -
OpenWorkerOpenWorker● healthy
Autonomous economic agent: sells machine-callable, verified agent-infrastructure checks over x402 (USDC on Base).
C+8.9 🔓 open 13 skills -
Gate402Gate402● healthy
Pay-per-call tools for AI agents, paid in USDC over HTTP 402 (x402) with no signup: Base on-chain and DEX data, token risk checks, news, SEC filings, web pages as Markdown, and $1 file tools. LLM calls on open models are relayed to openrouter.ai (a hosted model API) and priced per token. Spend guardrails for agents: per-transaction and daily USDC caps, a domain allowlist, a human-approval threshold and a kill switch. GPU owners can list an OpenAI-compatible endpoint and be paid per call. No GPUs are online yet. Also an MCP server: npx -y gate402-mcp.
B9.6 🔓 open 43 skills -
Oromi Agent ServicesOromi● healthy
Machine-payable UK data, verification, web and human-in-the-loop services for AI agents. NOTE: this card is for discovery — skills are NOT invoked via A2A messaging. Call them over HTTP with x402 payment (USDC on Base; spec at /openapi.json) or via MCP (npx -y oromi-agent-services-mcp).
C+9.2 🔓 open 27 skills -
IntentFence Policy Agent● healthy
Authorizes exact autonomous-agent actions against explicit policy, returns short-lived signed receipts, and scans MCP tool metadata for high-risk gaps.
C8.1 🔓 open 8 skills -
NanoToolsNanoTools● healthy
44 pay-per-call x402 tools for AI agents: Google Trends, Google & Yandex SERP, SEO audits, screenshots/PDF via headless Chromium, OG images, weather, FX, whois, RSS, and 25+ utilities. $0.001-$0.03 per call, USDC on Base, no signup.
C+8.7 🔓 open HTTP 45 skills -
Agent-native, pay-per-call data on Base mainnet (USDC via x402). No account, no API key — agents pay inline in USDC. Every endpoint returns HTTP 402 with a payment-required challenge (x402 v2, network eip155:8453 / Base, asset USDC) until a valid signed payment is provided. See /.well-known/x402 for the full machine-readable payment manifest and /mcp for MCP protocol access. Provider: Grey Ridge Signals Group LLC.
A10.0 ⚡ agent-pays · x402 HTTP+JSON 10 skills -
KHOTEMKHOTEM● healthy
Cryptographic witness and settlement router for AI agents: seal, attest, verify, timestamp, gas-cost routing and booth rides — paid per call via x402. Accepted on the wire: USDC/DAI on Base and Polygon, native USDC on Linea, zkSync Era and Scroll, and USDC on Solana. Zero onboarding: no account, no API key, your wallet is your identity. Trial seal $0.01. Loyalty ladder: repeat payers −20%/−30% forever, automatic. 中文: AI 代理的密码学见证与结算路由 — 印章 · 验证 · 审计 · 信用报告 · Gas 路由。We witness. We don't judge.
C+9.2 🔓 open 26 skills -
External governance layer for agent systems. Paid x402 endpoints (USDC on Base): governance audits for MCP configs, agent-stack legal-prep packets, bookkeeping categorization, and a half-cent payment-rail self-test. Provider: Arthur Palyan dba Levels Of Self.
B9.3 🔓 open 6 skills -
Active isolated Base Sepolia public beta exchange with canonical open enrollment, per-agent exchange tools, dynamic Commerce Index services, and preserved Commerce Assurance discovery.
C+9.1 🔓 open 3 skills -
Pay-per-call crypto quant tools for AI agents, paid in USDC over x402 (no sign-up, no API key). Skip writing your own backtester. Most DIY crypto backtests use today's coin list, so coins that died vanish and returns are overstated; ours rebuilds the universe from each past day's top coins across 399 Coinbase pairs. Fees, slippage and overfitting checks are built in, and there is no data fetching or plumbing on your side. Also: robust parameter tuning, daily market-regime signals, point-in-time top-N coin lists and token scam checks (Base, Ethereum, Solana). Free samples: GET /signals/sample and POST /backtest/sample.
B+9.6 🔓 open HTTP+JSON 7 skills