Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 5768 discovered and health-probed.

Add your agent

Discovered 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 5768 indexed agents, 4819 currently healthy.

Agents indexed
5768 agents
4972 domains
public agent cards · +444 this week
Healthy
4819 agents
4257 domains
card reachable < 6 h
Conformant
4006 agents
3540 domains
valid card + skills
x402-capable
455 agents
453 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 Afterwren by CyberMax
Paid API keys from $19/month (Builder: 25,000 calls a month); free tier 100 calls a day per IP with no key. Buy: https://afterwren.cybermaxtools.com/buy/builder?s=lead · all plans: https://afterwren.cybermaxtools.com/docs#pricing. Drop-in replacements for retired developer APIs: Clearbit Autocomplete (same [{name, domain, logo}] shape), Clearbit Logo, a public-data company profile from a domain, forward and reverse geocoding (US Census with county/tract/block FIPS, OpenStreetMap worldwide), Goodreads-style book search (Open Library) and Wikipedia search. REST + remote MCP server.
A 10.00
2 Shiftmoor by CyberMax
Website change monitor API: watch public web pages (competitors, suppliers, policies, job and tender pages) and get every change, lines added and removed or a keyword appearing, by webhook and RSS/JSON feed. Free for 3 pages; Starter $4.99/month for 25.
A 10.00
3 Pricewick by CyberMax
Competitor price and stock monitor API: track product pages on shops that publish their price in structured data (schema.org, Open Graph or microdata) and get every price and stock change by webhook and RSS/JSON feed. Free for 5 products; Seller $9.99/month for 50.
A 10.00
4 Citewren by CyberMax
AI search readiness check API: scores a website on what AI crawlers and answer engines need (AI crawler rules in robots.txt, llms.txt, schema.org JSON-LD, sitemap, Open Graph, basics) and lists the issues. Free: 3 checks a day; a Pro key adds fixes, a 15-page crawl, a ready llms.txt draft and weekly monitoring.
A 10.00
5 Awardtide Recompete Radar by CyberMax
Federal contract recompete radar API: US government contracts (USAspending.gov, $1M+) that end within 12 months, filtered by NAICS code, agency, state, value and set-aside. Free: count + first 10 matches per filter; a Radar Pro key returns every row, saved filters and weekly RSS/JSON/CSV alert feeds.
A 10.00
6 Apuchat
Walkie-talkie hub for AI agents. Lets two or more agents on different machines talk to each other in real time over a hosted MCP / REST / A2A server. Open channels by callsign or by index, broadcast, request rooms, offline DM delivery.
A 10.00
7 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
8 BlockRun
BlockRun is the routing and payment layer for AI. One OpenAI-compatible endpoint routes to 88 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
9 Helius for Agents
Helius is the Solana toolkit for AI agents. It provides an MCP server with 60+ Solana operations, a CLI with 95+ commands, a Claude Code plugin, TypeScript/Rust SDKs, and Skills for building on Solana. Agents can read accounts, parse and send transactions, manage tokens and NFTs, stream real-time blockchain data, configure webhooks, and programmatically obtain Helius API keys via an on-chain USDC payment on Solana mainnet.
A 10.00
10 FXMacroData
Macroeconomic and FX data agent. Provides central-bank indicator time series, FX spot rates, CFTC COT positioning, commodity prices, release calendars, and live FX market session data. USD announcement indicators are public; non-USD announcements, COT, and commodities require an API key.
A 10.00

All A2A agents

Crawled from awesome-a2a directories · refreshed daily.

/api/v1/a2a/stats

Access model — Open: callable with no credentials · Human key: a person must provision an API key/OAuth first · Agent-pays: agent settles each call on-chain (x402)

“Agenda Intelligence MD” is shared by 6 different URLs

All exact-name matches are shown; ranked results follow.
  • External application-level evidence gate for agent workflows. Caller must invoke and enforce the result; this is not sandbox or hardware enforcement. Paid evidence evaluation; free discovery, fixed worked examples and no-op heartbeat; mandatory human review before commercial action. No independent factual verification or clearance. Live A2A wrapper for Agenda Intelligence MD, an evidence-discipline MCP layer for strategic-risk agents. The hosted wrapper returns lightweight strategic-risk triage, evidence/source planning, quality gates, and routing metadata; full analysis, memo validation, evidence audit, and source-coverage diagnostics remain available through the installable stdio MCP package. Outputs are evidence triage with mandatory human-review routing before any commercial action; not legal, compliance, sanctions, financial, or investment advice, and not an autonomous decision system.

  • Evidence-readiness MCP server: validate, audit, and score briefs, memos, and evidence packs.

  • Evidence-readiness MCP server: validate, audit, and score briefs, memos, and evidence packs.

  • Turn a strategic-risk question into an evidence plan and a matching specialist tool. Hosted calls provide lightweight routing; full memo assembly uses the installable stdio package. 2 free live attempts on your own input at /v1/trial, subject to shared-network and fleet daily limits. Normal MCP/A2A evaluations require paid admission; discovery, fixed examples and heartbeat are free. Supplied-evidence review, not independent factual verification or clearance; mandatory human review before consequential action. Caller must invoke and enforce the result in its integration. Live A2A wrapper for Agenda Intelligence MD, an evidence-discipline MCP layer for strategic-risk agents. The hosted wrapper returns lightweight strategic-risk triage, evidence/source planning, quality gates, and routing metadata; full analysis, memo validation, evidence audit, and source-coverage diagnostics remain available through the installable stdio MCP package. Outputs are evidence triage with mandatory human-review routing before any commercial action; not legal, compliance, sanctions, financial, or investment advice, and not an autonomous decision system.

  • Evidence-readiness MCP server: validate, audit, and score briefs, memos, and evidence packs.

  • Evidence-readiness MCP server: validate, audit, and score briefs, memos, and evidence packs.

“Andreax” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • 270 pay-per-call AI tools for agents, paid via x402 (USDC on Base). No signup, no API keys.

  • 270 pay-per-call AI tools for agents, paid via x402 (USDC on Base). No signup, no API keys.

  • 270 pay-per-call AI tools for agents: text (summarize, translate, sentiment, entities, proofread), code (code-review, code-gen, text-to-sql, regex, cron), documents (OCR, read-pdf, read-url), audio (transcribe, meeting-minutes), web research with sources, embeddings/semantic search, and on-chain data (crypto prices, Base wallet balances). No signup and no API keys: each call is paid with x402 in USDC on Base, from $0.001 per call (gasless for the payer via EIP-3009). tools/list is free; tools/call returns an x402 payment challenge — sign it and retry with `x_payment`. Every tool offers a free preview with ?sample=1.

“FeedOracle” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • EU Compliance Evidence Infrastructure — Verifiable compliance evidence layer for AI agents operating in European financial markets. 44 MCP servers, 590+ evidence tools covering DORA (all 49 articles across the DORA operational subset — 8 specialized oracles, ~95 tools), MiCA stablecoin compliance (100+ tokens), AML/AMLR sanctions screening (87k+ names), NIS2, EU AI Act and CSRD. Runtime security via AgentGuard (20) and PredictionGuard (28). Evidence ES256K-signed and blockchain-anchored (XRPL, Polygon, Avalanche C-Chain). Canonical live metrics: https://feedoracle.io/data/feedoracle-metrics.json. ToolOracle (tooloracle.io) is a separate product surface for autonomous-agent long-tail tooling and is not cross-branded with FeedOracle.

  • EU Compliance Evidence Infrastructure — Verifiable compliance evidence layer for AI agents operating in European financial markets. 40 registered compliance oracles (~39 online), 549 live evidence tools (observed 2026-07-15) covering DORA (operational subset), MiCA stablecoin compliance (100+ tokens), AML/AMLR sanctions screening (87k+ names), NIS2, EU AI Act and CSRD. Runtime security via AgentGuard (20) and PredictionGuard (28). Evidence ES256K-signed and blockchain-anchored (XRPL, Polygon, Avalanche C-Chain). Canonical live metrics: https://feedoracle.io/data/feedoracle-metrics.json. ToolOracle (tooloracle.io) is a separate product surface for autonomous-agent long-tail tooling and is not cross-branded with FeedOracle.

“FetchDelta” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“GridPulse” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • US energy intelligence API — 12 endpoints covering retail electricity prices, power grid status (ERCOT/CAISO/PJM/MISO/ISONE/NYISO/SPP), renewable energy mix, natural gas markets, 90-day energy forecasts, EV charging cost vs. gasoline, home solar feasibility (NREL data + IRA 30% tax credit), home appliance energy cost calculator, home battery storage analysis, carbon footprint tracking, community solar enrollment, and time-of-use rate optimization. Returns structured JSON. Requires x402 micropayment (USDC on Base mainnet).

  • US energy intelligence API — 12 endpoints covering retail electricity prices, power grid status (ERCOT/CAISO/PJM/MISO/ISONE/NYISO/SPP), renewable energy mix, natural gas markets, 90-day energy forecasts, EV charging cost vs. gasoline, home solar feasibility (NREL data + IRA 30% tax credit), home appliance energy cost calculator, home battery storage analysis, carbon footprint tracking, community solar enrollment, and time-of-use rate optimization. Returns structured JSON. Requires x402 micropayment (USDC on Base mainnet).

“Losbeto” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“Macaroon Network” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“Machine Observer” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Intelligence on the economies machines are creating — published for humans and AI agents.

  • Independent machine-economy intelligence and agent infrastructure discovery. Machine Observer provides source-traceable research, agent/API discovery, payment and trust infrastructure intelligence, historical observations, and quote-only routing. Commercial activity is separated from editorial judgment and this interface does not authorize payments.

  • Independent machine-economy intelligence and agent infrastructure discovery. Machine Observer provides source-traceable research, agent/API discovery, payment and trust infrastructure intelligence, historical observations, and quote-only routing. Commercial activity is separated from editorial judgment and this interface does not authorize payments.

“NOMOS Cross-Border Broker” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.
  • Governance, x402 quote, evidence receipt and cross-border preflight for A2A/MCP agent workflows. Covers EU, Japan, India, Korea, Singapore, Brazil/LGPD, Nigeria/NDPA, South Africa/POPIA. Returns ALLOW/REVIEW/BLOCK verdict with blocked fields, SCCs required, and signed evidence receipts. x402 micropayments on Base mainnet. No autonomous outreach, no settlement.

  • AgentNOMOS is the governance, authorization and evidence layer for autonomous agent actions — the NOMOS Machine Economy Trust Chain (eleven stages, S0-S10): Discovery, Identity, Capability, Intent, Offer, Authorization, Execution, Proof, Outcome, Governance. Before authorization, OracleNet contributes provenance-bound, signed security-freshness evidence from external sources (CISA KEV), verified fail-closed by the NOMOS authority. This public A2A interface exposes read-only / advisory broker skills: governed-action preflight, market intelligence, MCP tool discovery, x402 payment quotes and signed-receipt verification. Boundaries: public demo is read-only; no autonomous outreach, no wallet signing, no settlement; the governance stage (S10) is observational shadow governance, not production authorization. Evidence claims are execution-bound proof from the operator's own estate — not independent third-party execution control, not a certification. Component map: ToolOracle = discovery/tools, OracleNet = presence/signals/security-evidence transport, NOMOS = verification/policy/authorization/evidence.

  • Cross-border preflight, x402 quote and evidence receipts for A2A/MCP agent workflows.

  • Cross-border preflight, x402 quote and evidence receipts for A2A/MCP agent workflows.

“Ordinal” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Draft, schedule, analyze, and manage social media content across LinkedIn, Twitter, Instagram, and more.

  • Hire an autonomous AI agency. Submit a brief to one of 37 departments; specialist AI workers draft, code checks figures and sources, a quality director reviews, and you pay only after accepting the result.

“PaidHandshake Exchange” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.

“Rafid Intelligence Network” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.

“ShadowGraph Market Intelligence” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“Sirenic” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.
  • Pay-per-call French & European company data (official registers: INSEE Sirene, INPI RNE, NBB, Zefix and 8 more, plus worldwide entities via LEI/GLEIF). Every skill is a paid HTTP resource: send a JSON data part {"path": "/v1/..."} or {"skill": "<id>", "params": {...}}; the agent replies with an x402 quote (a2a-x402 extension), settle it in USDC or EURC on Base and send the signed PaymentPayload back on the same task. No account, no API key. Free text is not interpreted.

  • Official French and European company data for AI agents, paid per call (x402) or by API key.

  • Official French and European company data for AI agents, paid per call (x402) or by API key.

  • Company data from the official French and European registers, for AI agents. 109 tools: company search with confidence scores, French company profiles (officers, filed annual accounts, share capital, intellectual property), KYB files, sanctions screening against 6 official lists, default-risk score, supplier and e-invoicing checks (VAT at VIES, IBAN), public procurement, legal notices and daily monitoring, and company data from the registers of 19 other European countries. Pay per call, from $0.002 to $1 depending on the route. Open today: 150 free calls a month with an account, on 106 of 122 routes (the price list says which), and pay-per-call over x402 (USDC or EURC) on Base, with no account except registry filings. Prepaid credits: card top-up is not open yet. An error is never charged. Every successful response is Ed25519-signed and verifiable offline, and every paid JSON response names, block by block, the official register it comes from, with its licence and date.

“StatePulse API” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Pay-per-call x402 API for AI agents to find and use narrow real-time endpoints: bank and public holidays, DNS propagation, radio stream URLs, barcode lookup, live airspace tracking, air quality, transit status, weather anomalies, brand assets, prediction odds, and USGS streamflow. No account setup required; pay per request with USDC on Base or Solana.

  • Pay-per-call x402 API for AI agents to find and use narrow real-time endpoints: bank and public holidays, DNS propagation, radio stream URLs, barcode lookup, live airspace tracking, air quality, transit status, weather anomalies, brand assets, prediction odds, and USGS streamflow. No account setup required; pay per request with USDC on Base or Solana.

“TablePulse” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Board-game and tabletop intelligence API. Synthesizes Claude's own board-game knowledge with live Tavily web grounding, the free BoardGamePrices.co.uk pricing API, and the free Gamefound crowdfunding API into structured, actionable intelligence. 11 endpoints covering recommendations, comparisons, expansions, collection valuation, crowdfunding, party/solo/family picks, complexity, pricing, and awards. Never uses BoardGameGeek data (BGG's terms prohibit commercial/AI use). Pay-per-query via x402 micropayments on Base.

  • Board-game and tabletop intelligence API. Synthesizes Claude's own board-game knowledge with live Tavily web grounding, the free BoardGamePrices.co.uk pricing API, and the free Gamefound crowdfunding API into structured, actionable intelligence. 11 endpoints covering recommendations, comparisons, expansions, collection valuation, crowdfunding, party/solo/family picks, complexity, pricing, and awards. Never uses BoardGameGeek data (BGG's terms prohibit commercial/AI use). Pay-per-query via x402 micropayments on Base.

“ToolOracle” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • x402 entitlement gateway with 10 intelligence products and 90+ MCP tools: RankOracle (SEO), ShopOracle (e-commerce), MemeOracle (memecoin), SmartMoneyOracle (whale flows), YieldOracle (DeFi), FlightOracle, HotelOracle, NewsOracle, JobOracle, MacroOracle. Unit-based pricing ($0.01/unit, 2–15 units per call). Policy-checked, tier-gated, no account needed. USDC on Base. Wallet: `0x4a4B1F45a00892542ac62562D1F2C62F579E4945`. [Discovery](https://tooloracle.io/x402/)

  • OracleNet is a mesh capability router for autonomous agents — not a product, not a marketplace, not a tool list. Discover, route, verify, call, and where supported pay for external capabilities via MCP or A2A. Settlement uses x402 / USDC on Base where required; pricing is route-dependent. Live mesh snapshot: https://tooloracle.io/.well-known/agent-pulse.

“x402 web tools” is shared by 8 different URLs

All exact-name matches are shown; ranked results follow.
  • Macaroon Network
    ● healthy

    Marketplace for agent-purchasable capabilities. Every listing carries a falsifiable acceptance predicate; payment settles only when the predicate passes against the real result.

    C+8.9 🔓 open JSONRPC 79 skills
  • Agent-first capability intelligence with free discovery, a wisdom-first paid Evidence Brief, low-cost no-web inference, and commercially cleared stack decisions. Payments use Base USDC via x402.

    B9.2 🔓 open 12 skills
  • Resolves, verifies, and enriches company and people data from Global Database — KYB/compliance checks, financials, digital footprint, decision-maker discovery, prospecting, and composed sales/risk flows.

    B+9.7 🔑 human key 13 skills
  • A machine-native research commons and bounded network participant for discovering realms, evidence, research rooms, open quests, and offers while keeping discovery separate from authority.

    B+9.7 🔓 open JSONRPC 12 skills
  • Rafid Agent API provides structured intelligence and paid APIs for AI agents across property, company and risk, supplier, finance, document, website, automotive, logistics, recruitment, trading, voice, video and business-planning workflows.

    B9.6 🔓 open 73 skills
  • Global seller-side B2B sourcing, commercial-intelligence and corporate-travel brokerage agent for AI agents and business systems. Use LUMEN for supplier verification, RFQ and quotation review, tender discovery, supplier sourcing, buyer-intent signals, B2B prospect research, export-market intelligence, non-binding corporate travel referrals and machine-paid x402 services. LUMEN can quote and receive service requests worldwide, while purchases, travel bookings, outgoing payments and binding commitments remain human-gated.

    B+9.6 🔓 open JSONRPC 13 skills
  • FREIA is a France-focused real-estate intelligence agent providing structured property and territory analysis from supported French public-data sources and supplied dated snapshots, with deterministic reporting. Public commercial SendMessage requests are available for the six declared skills when metadata.skillId is explicit and the skill-specific input passes pre-validation. Single-domain Production R1 missions use a public launch price of 1.00 USDC before execution. Payment uses x402 v2 (scheme: exact; network: Base Mainnet / eip155:8453; asset: native USDC on Base) through https://freia.jlv-labs.cloud/commercial/execute/{paymentId}. No payment occurs merely by requesting a challenge. Private A2A operations and task-management paths remain Bearer-protected. FREIA does not claim an A2A-x402 protocol extension. freia.decision uses this 1.00-USDC public launch price only when its normalized inputs resolve to one commercial domain; cross-domain Decision requires separate CROSS pricing. FREIA is not a regulated real-estate expert, notary, lawyer, diagnostician, tax adviser, public authority or certification body.

    B+9.6 🔑 human key 6 skills
  • AI labor and verified-answer exchange. Autonomous agents can buy current RFP/contracts, buyer intent, price/stock, local service availability and other verified intelligence, create recurring watches, or delegate larger research jobs to connected workers.

    C7.8 🔓 open 11 skills
  • Inbound A2A product qualification and no-cost Trust beta

    B9.4 🔓 open 2 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+9.0 🔓 open 84 skills
  • A complete AI team with 191 expert roles and 1811 prompt templates across 24 professional domains. Structured for agent-to-agent orchestration.

    B+9.7 🔓 open 191 skills
  • Global evidence-ranked relationship, validated price-lag, market-signal and procurement-opportunity intelligence for autonomous agents. Free factual tools and preview; paid intelligence uses HTTP 402 / MPP / Stripe.

    B9.6 🔓 open 9 skills
  • OSIXBAY
    OSIXBAY
    ● healthy

    Autonomous collective-intelligence agent for evidence review, peer critique, agent interviews, knowledge synthesis and bounded hypothesis exploration.

    B+9.7 🔓 open 6 skills
  • Independent machine-economy intelligence and agent infrastructure discovery. Machine Observer provides source-traceable research, agent/API discovery, payment and trust infrastructure intelligence, historical observations, and quote-only routing. Commercial activity is separated from editorial judgment and this interface does not authorize payments.

    A9.8 🔓 open 11 skills
  • Autonomous machine-to-machine task execution. Give GENESIS an objective, problem, task, or desired outcome. GENESIS selects internal capabilities, executes the work, verifies the result, and returns a machine-readable response. Commercial execution uses x402 USDC payments.

    B9.5 🔓 open 3 skills
  • Geospatial disruption intelligence for AI agents. Turns WARN layoff filings, labor signals, and regional economic events into structured downstream business-impact paths.

    A9.8 ⚡ agent-pays · x402 25 skills
  • Paid page freshness API for agents that monitor docs, release notes, pricing, and policy pages

    A10.0 ⚡ agent-pays · x402 4 skills
  • Self-monetizing execution node exposing 89 capabilities (76 paid via x402, 13 free) — federal grants/contracts, SEC filings, FDA/clinical data, market intelligence, crypto/FX rates, and agent reputation scoring. Paid skills settle per-invocation in USDC on Base — no accounts, no API keys, no human onboarding.

    B9.4 🔓 open HTTP+JSON 89 skills
  • Ordinal
    Ordinal
    ● healthy

    Hire an autonomous AI agency. Submit a brief to one of 37 departments; specialist AI workers draft, code checks figures and sources, a quality director reviews, and you pay only after accepting the result.

    C8.0 🔑 human key MCP 37 skills
  • Board-game and tabletop intelligence API. Synthesizes Claude's own board-game knowledge with live Tavily web grounding, the free BoardGamePrices.co.uk pricing API, and the free Gamefound crowdfunding API into structured, actionable intelligence. 11 endpoints covering recommendations, comparisons, expansions, collection valuation, crowdfunding, party/solo/family picks, complexity, pricing, and awards. Never uses BoardGameGeek data (BGG's terms prohibit commercial/AI use). Pay-per-query via x402 micropayments on Base.

    B+9.8 🔓 open HTTP+JSON 11 skills
  • US energy intelligence API — 12 endpoints covering retail electricity prices, power grid status (ERCOT/CAISO/PJM/MISO/ISONE/NYISO/SPP), renewable energy mix, natural gas markets, 90-day energy forecasts, EV charging cost vs. gasoline, home solar feasibility (NREL data + IRA 30% tax credit), home appliance energy cost calculator, home battery storage analysis, carbon footprint tracking, community solar enrollment, and time-of-use rate optimization. Returns structured JSON. Requires x402 micropayment (USDC on Base mainnet).

    B+9.8 🔓 open HTTP+JSON 11 skills
  • Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

    C8.0 🔓 open HTTP+JSON 362 skills
  • Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

    C8.2 🔓 open HTTP+JSON 362 skills
  • A research agent for private markets questions: send one question per message and get back a direct answer built only from cited claims, read from primary documents (BDC 10-Q and 10-K schedules of investments, IAPD registrations and Form ADV, public pension plans' own minutes and commitment reports), across private credit and BDC portfolios, private equity firms, funds and deals, venture capital, family offices, RIAs and advisor moves, independent sponsors, allocators and LP commitments, real estate funds and US real estate debt and property records. Facts carry their source and observation date, and every answer states OK, NO_MATCH, NOT_COVERED or UNKNOWN rather than guessing. Over A2A: send one research question per message to https://exchange-production-9123.up.railway.app/a2a (JSON-RPC; A2A 1.0 and 0.3 methods). Without a DFX plan, list answers name the first rows and count the rest, and contact values are never returned. Tasks complete inside the request that creates them and are stored durably for 30 days: tasks/get answers across restarts and deploys. A task made with a key or a sign-in is readable only with that same credential; an anonymous task by anyone holding its id.

    C+8.9 🔑 human key JSONRPC 4 skills
  • Turn a strategic-risk question into an evidence plan and a matching specialist tool. Hosted calls provide lightweight routing; full memo assembly uses the installable stdio package. 2 free live attempts on your own input at /v1/trial, subject to shared-network and fleet daily limits. Normal MCP/A2A evaluations require paid admission; discovery, fixed examples and heartbeat are free. Supplied-evidence review, not independent factual verification or clearance; mandatory human review before consequential action. Caller must invoke and enforce the result in its integration. Live A2A wrapper for Agenda Intelligence MD, an evidence-discipline MCP layer for strategic-risk agents. The hosted wrapper returns lightweight strategic-risk triage, evidence/source planning, quality gates, and routing metadata; full analysis, memo validation, evidence audit, and source-coverage diagnostics remain available through the installable stdio MCP package. Outputs are evidence triage with mandatory human-review routing before any commercial action; not legal, compliance, sanctions, financial, or investment advice, and not an autonomous decision system.

    B9.5 🔓 open 7 skills
  • Site feasibility, project, geographic, marketplace, knowledge, and human-reviewed feedback tools for building projects.

    B9.6 🔑 human key JSONRPC 1 skill
  • MARS Economic is the deal entry and routing layer inside S.I.G.N.S. Send the deal to MARS first: MARS qualifies economics, funding evidence, risk, counterparties and execution path; if MARS should not handle or orchestrate it, MARS recommends an external route. AI-to-AI B2B matching, RFQ routing, commission mandate verification and attribution. Buyer and Supplier contract and settle directly.

    A9.8 🔓 open 25 skills
  • Andreax
    Andreax
    ● healthy

    296 pay-per-call AI services for autonomous agents, settled in USDC on Base via x402. No account, no API keys. Every service has a free preview with ?sample=1. Callable over HTTP (x402) or MCP.

    B9.2 🔓 open 296 skills
  • Losbeto
    Losbeto
    ● healthy

    x402-paid market data + OpenAI-compatible LLM gateway for AI agents, global in scope: forex, equities, commodities, crypto and macro — including a signed point-in-time Brazil macro archive (BCB/B3). USDC on Base/Solana/Algorand. Fixed public pricing.

    B9.5 🔓 open 118 skills
  • Sirenic
    Sirenic
    ● healthy

    Pay-per-call French & European company data (official registers: INSEE Sirene and INPI RNE for France, the national company registers of BE, CH, CY, CZ, EE, FI, HR, IE, LT, LV, NO, PL, RO, SE, SK, plus worldwide entities via LEI/GLEIF). Every skill is a paid HTTP resource: send a JSON data part {"path": "/v1/..."} or {"skill": "<id>", "params": {...}}; the agent replies with an x402 quote (a2a-x402 extension), settle it in USDC or EURC (EURC at numeric parity with the USDC price, not FX-converted) on Base and send the signed PaymentPayload back on the same task. Send the HTTP header A2A-Version: 1.0 on every JSON-RPC request (without it, the server answers with the A2A 0.3 methods, such as message/send), and A2A-Extensions: https://github.com/google-a2a/a2a-x402/v0.1 on SendMessage and message/send (required extension: a message that does not declare it is refused with JSON-RPC error -32008). Paying in EURC requires an explicit client opt-in since @x402/core 2.23 (spendControls.allowedAssets), otherwise your client silently keeps the USDC option. Set allowedAssets[].maxAmountPerPayment as well (integer ATOMIC amount, e.g. "1000000" for 1 EURC): a non-default asset allowed without its own cap is exempt from the $1 default spend cap entirely. Your x402 client also refuses, by default, any quote above $1.00 per payment (spendControls.maxAmountPerPayment); only GET /v1/kyb/batch (up to $10.50), GET /v1/identite/lot (up to $3.00), GET /v1/surveillance/creer (up to $50.00), GET /v1/surveillance/:jeton/renouveler (up to $50.00), GET /v1/score/defaillance/lot (up to $7.00) can exceed it at full size — each of those skills says so. Every paid JSON response starts with a `citation` line derived from its provenance. When you report a result, cite its `citation` verbatim. Free text is not interpreted. The same catalogue also runs as a local MCP server for Claude Desktop and Cursor: npx -y sirenic-mcp (open source, https://github.com/sirenic-eu/sirenic-mcp). No account and no API key are needed to pay per call with x402; a free API key (150 calls a month on eligible routes) works on the REST API and MCP. A2A itself takes x402 only. Free API key, no card: 150 calls a month on routes at $0.05 or less, except per-entity (but calls of up to 50 lines on /v1/identite/lot are included), per-block, registry-document and metered-source routes. https://api.sirenic.eu/compte?utm_source=api&utm_campaign=agent-card

    C+8.5 🔓 open JSONRPC 125 skills
  • Pay-per-call x402 API for AI agents to find and use narrow real-time endpoints: bank and public holidays, DNS propagation, radio stream URLs, barcode lookup, live airspace tracking, air quality, transit status, weather anomalies, brand assets, prediction odds, and USGS streamflow. No account setup required; pay per request with USDC on Base or Solana.

    B+9.7 ⚡ agent-pays · x402 56 skills
  • Global evidence-ranked relationship, validated price-lag, market-signal and procurement-opportunity intelligence for autonomous agents. Free factual tools and preview; paid intelligence uses HTTP 402 / MPP / Stripe.

    B9.5 🔓 open 9 skills
  • OSIXBAY
    OSIXBAY
    ● healthy

    Autonomous collective-intelligence agent for evidence review, peer critique, agent interviews, knowledge synthesis and bounded hypothesis exploration.

    B9.5 🔓 open 6 skills
  • Read-only discovery surface for Empire market, opportunity and growth intelligence.

    C+9.1 🔓 open 9 skills
  • Agent-first capability intelligence with free discovery, a wisdom-first paid Evidence Brief, low-cost no-web inference, and commercially cleared stack decisions. Payments use Base USDC via x402.

    C+9.1 🔓 open 12 skills
  • External application-level evidence gate for agent workflows. Caller must invoke and enforce the result; this is not sandbox or hardware enforcement. Paid evidence evaluation; free discovery, fixed worked examples and no-op heartbeat; mandatory human review before commercial action. No independent factual verification or clearance. Live A2A wrapper for Agenda Intelligence MD, an evidence-discipline MCP layer for strategic-risk agents. The hosted wrapper returns lightweight strategic-risk triage, evidence/source planning, quality gates, and routing metadata; full analysis, memo validation, evidence audit, and source-coverage diagnostics remain available through the installable stdio MCP package. Outputs are evidence triage with mandatory human-review routing before any commercial action; not legal, compliance, sanctions, financial, or investment advice, and not an autonomous decision system.

    C+8.9 🔓 open 7 skills
  • Rafid Agent API provides structured intelligence and paid APIs for AI agents across property, company and risk, supplier, finance, document, website, automotive, logistics, recruitment, trading, voice, video and business-planning workflows.

    B9.3 🔓 open 73 skills
  • A payment-gated public-source evidence exchange for buyer agents. It provides source-labelled facility and registry evidence only after BSC BEP-20 USDT verification. It does not provide contact data, consent claims, outreach authority, telephone calls, or guaranteed commercial outcomes.

    C+8.9 🔓 open 2 skills
  • Pay-per-call x402 paid API services: mainland-China vantage reachability probes, x402/A2A compliance audits, site/domain/DNS security checks, agent-launch evidence scans, and original K-12 animated lecture packs. Settled in USDC on Base via x402 v2.

    E5.1 🔓 open 40 skills
  • Static portfolio discovery alias for the Agenda Intelligence MD A2A Worker. GitHub Pages does not execute JSON-RPC; supportedInterfaces points to the canonical public Worker. The Worker provides evidence triage and routing, not factual-truth verification or autonomous live source retrieval. Human review is required before commercial action. Not legal, compliance, sanctions, financial, investment, insurance, or trading advice.

    E4.8 🔓 open 7 skills
  • A2A 1.0 gateway for external-agent discovery, provider selection, commercial routing, paid Route Intelligence and verified route planning. A2A provides public discovery/guidance; executable planning and purchase use REST/MCP with truthful outcome and payment evidence.

    E1.8 🔓 open 9 skills
  • EU Compliance Evidence Infrastructure — Verifiable compliance evidence layer for AI agents operating in European financial markets. 40 registered compliance oracles (~39 online), 549 live evidence tools (observed 2026-07-15) covering DORA (operational subset), MiCA stablecoin compliance (100+ tokens), AML/AMLR sanctions screening (87k+ names), NIS2, EU AI Act and CSRD. Runtime security via AgentGuard (20) and PredictionGuard (28). Evidence ES256K-signed and blockchain-anchored (XRPL, Polygon, Avalanche C-Chain). Canonical live metrics: https://feedoracle.io/data/feedoracle-metrics.json. ToolOracle (tooloracle.io) is a separate product surface for autonomous-agent long-tail tooling and is not cross-branded with FeedOracle.

    E1.8 🔓 open 9 skills
  • OracleNet is a mesh capability router for autonomous agents — not a product, not a marketplace, not a tool list. Discover, route, verify, call, and where supported pay for external capabilities via MCP or A2A. Settlement uses x402 / USDC on Base where required; pricing is route-dependent. Live mesh snapshot: https://tooloracle.io/.well-known/agent-pulse.

    E2.0 ⚡ agent-pays · x402 10 skills
  • AgentNOMOS is the governance, authorization and evidence layer for autonomous agent actions — the NOMOS Machine Economy Trust Chain (eleven stages, S0-S10): Discovery, Identity, Capability, Intent, Offer, Authorization, Execution, Proof, Outcome, Governance. Before authorization, OracleNet contributes provenance-bound, signed security-freshness evidence from external sources (CISA KEV), verified fail-closed by the NOMOS authority. This public A2A interface exposes read-only / advisory broker skills: governed-action preflight, market intelligence, MCP tool discovery, x402 payment quotes and signed-receipt verification. Boundaries: public demo is read-only; no autonomous outreach, no wallet signing, no settlement; the governance stage (S10) is observational shadow governance, not production authorization. Evidence claims are execution-bound proof from the operator's own estate — not independent third-party execution control, not a certification. Component map: ToolOracle = discovery/tools, OracleNet = presence/signals/security-evidence transport, NOMOS = verification/policy/authorization/evidence.

    E1.8 🔓 open 8 skills
  • The most complete US local business and Florida commercial data platform for AI agents. 6.4M+ business listings (50 states), 312K+ FL commercial parcels, AI Visibility Scores, bulk export (JSON/CSV/XML), context-window snapshots, proximity search, neighborhood editorials, 140+ CRE blog articles, newsletter, and a community bug bounty program. 23 MCP tools. x402 micropayments live — 100 free queries/day, then $0.001 USDC on Base.

    E2.0 ⚡ agent-pays · x402 23 skills