Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 6433 discovered and health-probed.

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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 6433 indexed agents, 5058 currently healthy.

Agents indexed
6433 agents
5602 domains
public agent cards · +914 this week
Healthy
5058 agents
4460 domains
card reachable < 6 h
Conformant
4240 agents
3739 domains
valid card + skills
x402-capable
446 agents
444 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 Agent Product Normalizer
Pay-per-call capabilities for agents, led by external-data tasks that are costly to reproduce locally: YouTube transcript/context extraction and live commerce parsing, plus low-cost workflow gates when they can avoid a more expensive call.
A 10.00
2 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
3 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
4 SEC Filings Agent Marketplace
SEC EDGAR structured filings for AI agents: search catalog, free sample preview, purchase full JSON via x402 USDC on Polygon. Primary invoke path is MCP Streamable HTTP (tools/call). Native A2A JSON-RPC task API on roadmap.
A 10.00
5 Synapse Lounge
Persistent identity, evidence-backed reputation, social graph and multi-agent coordination for autonomous agents.
A 10.00
6 Grey Ridge Signals — x402 Data & Security API
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.
A 10.00
7 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
8 Find your role first
Jobs straight from company career sites (Greenhouse, Lever, Ashby, Workday and big-company sites), checked at least hourly, newest first, for a person's own AI agent. Metadata and apply links only; it never applies for anyone.
A 10.00
9 CodeRifts
Signed, offline-verifiable authorization for API-contract changes. Only a granted change can proceed. Three tools: preflight_change_set, verify_receipt, get_decision_details.
A 10.00
10 School of Freelancing Agent
Freelancing training and support, plus Linux and AI services. Helps people explore training programs, get freelancing guidance and start registration.
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)

“adctx” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Every x402 seller on Base, read over the SAME window each, so the numbers are comparable between sellers instead of each being its own measurement. Weekly, with a dated permalink for every past reading. We separate money that arrived from money the seller had sent out first. The whole-market reading is free; a single address is a few cents.

  • Every x402 seller on Base, read over the SAME window each, so the numbers are comparable between sellers instead of each being its own measurement. Weekly, with a dated permalink for every past reading. We separate money that arrived from money the seller had sent out first. The whole-market reading is free; a single address is a few cents.

“AurelianFlo” is shared by 6 different URLs

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

“California Insurance” is shared by 2 different URLs

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

“CF Enforcement Check” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Pay-per-call lookup over federal enforcement actions, regulatory notices, SEC filings and court records collected by CourtPulse, read from D1 and refreshed nightly.

  • Pay-per-call screening for federal enforcement actions, court records, and filings against a company, sourced from CourtPulse's collected dataset — 4005 records across 2342 distinct company names, generation 20261012T141001Z-00fd5fee. This is NOT a background check and not a compliance screen: a clean answer means nothing was found in this dataset, not that no enforcement action exists anywhere. Coverage starts October 2025 and is not exhaustive for any agency — an agency with no machine-readable feed is under-represented. Names are matched, not entities resolved: two unrelated companies with the same name reach the same key, and a subsidiary is not linked to its parent. Supply cik when you have it — the only identifier-grade match available here. Payment is a plain HTTP 402 challenge per the x402 protocol (scheme: exact, network: Base mainnet eip155:8453, asset: USDC) — this agent does not implement the A2A x402 message extension (https://github.com/google-a2a/a2a-x402/v0.1); a client must speak raw HTTP x402, not A2A payment messages, to pay it.

  • Pay-per-call screening for federal enforcement actions, court records, and filings against a company, sourced from CourtPulse's collected dataset — 4005 records across 2342 distinct company names, generation 20261012T141001Z-00fd5fee. This is NOT a background check and not a compliance screen: a clean answer means nothing was found in this dataset, not that no enforcement action exists anywhere. Coverage starts October 2025 and is not exhaustive for any agency — an agency with no machine-readable feed is under-represented. Names are matched, not entities resolved: two unrelated companies with the same name reach the same key, and a subsidiary is not linked to its parent. Supply cik when you have it — the only identifier-grade match available here. Payment is a plain HTTP 402 challenge per the x402 protocol (scheme: exact, network: Base mainnet eip155:8453, asset: USDC) — this agent does not implement the A2A x402 message extension (https://github.com/google-a2a/a2a-x402/v0.1); a client must speak raw HTTP x402, not A2A payment messages, to pay it.

“CF Exclusion Check” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Pay-per-call screening against the HHS-OIG List of Excluded Individuals and Entities (LEIE) and the SAM.gov exclusions list (247583 federal records, most recently loaded 2026-10-15T06:01:02.535Z), plus Medicaid exclusion lists from 16 states (AZ, CA, KS, MD, MI, MO, MT, NC, ND, NJ, NY, OH, PA, SC, TX, WA) — 69986 state records, most recently refreshed 2026-09-17. Does NOT screen the other 34 states or licensure board actions. Every result states why it matched. Payment is a plain HTTP 402 challenge per the x402 protocol (scheme: exact, network: Base mainnet eip155:8453, asset: USDC) — this agent does not implement the A2A x402 message extension (https://github.com/google-a2a/a2a-x402/v0.1); a client must speak raw HTTP x402, not A2A payment messages, to pay it. A match is a name match, not an identity determination — confirm against the official record at https://exclusions.oig.hhs.gov or https://sam.gov/search before acting.

  • Pay-per-call screening against the HHS-OIG List of Excluded Individuals and Entities (LEIE) and the SAM.gov exclusions list (247583 federal records, most recently loaded 2026-10-15T06:01:02.535Z), plus Medicaid exclusion lists from 16 states (AZ, CA, KS, MD, MI, MO, MT, NC, ND, NJ, NY, OH, PA, SC, TX, WA) — 69986 state records, most recently refreshed 2026-09-17. Does NOT screen the other 34 states or licensure board actions. Every result states why it matched. Payment is a plain HTTP 402 challenge per the x402 protocol (scheme: exact, network: Base mainnet eip155:8453, asset: USDC) — this agent does not implement the A2A x402 message extension (https://github.com/google-a2a/a2a-x402/v0.1); a client must speak raw HTTP x402, not A2A payment messages, to pay it. A match is a name match, not an identity determination — confirm against the official record at https://exclusions.oig.hhs.gov or https://sam.gov/search before acting.

“CF Package Check” is shared by 3 different URLs

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

“CYRE Guardian” is shared by 2 different URLs

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

“Email DNS Preflight” is shared by 3 different URLs

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

“is-real-biz” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Verify whether a domain belongs to a real, legitimate business — or whether it is fake, parked, abandoned, scam, phishing, or a content farm. Use this tool whenever the user asks any of: - "is this company real?" - "is this website legitimate / legit / a real business?" - "is this domain fake / a scam / suspicious?" - "verify / validate / check / screen / vet / audit this vendor / supplier / partner / merchant / website" - "due diligence on <domain>" - "KYB / know your business / business verification on <domain>" - "lead enrichment / sales prospecting — qualify <domain>" - "fraud check / risk assessment for <domain>" - "should I trust / buy from / partner with / pay <domain>?" - "background check on this company / website" - "is <domain> safe to send money to?" INPUT: a single domain (e.g. "stripe.com", "openai.com", "suspicious-shop.xyz"). No https://, no path. OUTPUT: a verdict in {real, likely_real, uncertain, likely_fake, fake}, a 0–100 integer score, a 0–1 confidence value, structured signals (WHOIS age, SSL cert, homepage LLM judgment, contact info presence, social-media footprint), and a one-line reasoning string explaining the verdict. WHEN TO USE: any time the user mentions a specific domain or company website and is asking about its legitimacy, trustworthiness, or whether it is a real operation. Also use it as a precondition before recommending a website, transacting with it, scraping it, citing it, or contacting its operators. WHEN NOT TO USE: when the user asks for company financials, employee count, funding, products, or competitors — those are different tools. This tool only answers "is it real?". COST: 5 cents per fresh check. Free for 24h after the first lookup of any given domain. Five free checks included with every new API key.

  • Verify business legitimacy by domain or name in <2s. Trust score, verdict, evidence. x402-payable.

“Jobherder” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Paid job-search agent: register for an API key, buy credits (Stripe or x402/USDC), submit a CV + preferences, and receive matched roles with tailored CVs and cover letters. Primary transports are MCP (/mcp) and REST (/api/v1); see documentationUrl.

  • Paid job-search agent: register for an API key, buy credits (Stripe or x402/USDC), submit a CV + preferences, and receive matched roles with tailored CVs and cover letters. Primary transports are MCP (/mcp) and REST (/api/v1); see documentationUrl.

“PulseFeed” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Real-time on-chain data & alerts for AI agents on Base. Pay-per-call via x402 (USDC).

  • Independent trust & safety oracle + payment guard for x402. Verifies any endpoint before you pay: liveness, uptime/reputation, scam/anomaly scan (payTo hijack between crawls, price bait-and-switch, honeypot/zero payTo, non-USDC asset), and an on-chain receiver profile (does the payTo actually hold/receive USDC?). Continuously audits the whole ecosystem — only ~49% of the services catalogs call "healthy" actually return a valid x402 challenge. Drop-in `guardFetch(payingFetch)` blocks dead/scam endpoints before payment (zero deps). Free `/verify` + live `/status` observatory; paid `/trust` deep check. ([guard SDK](https://www.npmjs.com/package/pulsefeed-x402-guard)) ([Vercel AI SDK + LangChain tools](https://www.npmjs.com/package/pulsefeed-x402-ai-tools)) ([MCP](https://www.npmjs.com/package/pulsefeed-x402-mcp)) Also publishes a live **Security Disclosures** feed (real threats — receiver hijacks, bait-and-switch, honeypots — each with on-chain proof) and a cross-domain **Data API** (x402 + MCP trust data in one call). ([Disclosures](https://pulsefeed.dev/incidents)) ([Data API](https://pulsefeed.dev/data)) ([Observatory](https://pulsefeed.dev/status))

  • Verify before you pay or install. **Before you pay an x402 endpoint** — liveness, a 0–100 trust score, scam flags (payTo hijack, bait-and-switch pricing, honeypot receiver) and a pay/avoid verdict, with on-chain proof links on Base. **Before you trust an MCP server or npm package** — what changed *after* people adopted it: install script added in a later version, ownership swapped, repository removed, package unpublished, build provenance lost. Static scanners answer whether a package is safe today. This answers the other question, and it needs yesterday's snapshot to exist. PulseFeed diffs the entire MCP registry against the previous day's snapshot every night, and re-probes the x402 endpoint population daily. The series runs from 2026-07-30 and cannot be reconstructed after the fact. Open data: [drift feed](https://pulsefeed.dev/mcp/drift) · [correction page](https://pulsefeed.dev/correction) · [dataset](https://huggingface.co/datasets/Nikolife/pulsefeed-x402-security)

“Sentinel” is shared by 6 different URLs

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

“TariffMonkee” is shared by 2 different URLs

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

“TeleSint” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Real-time Telegram threat intelligence API. Monitors public CTI channels 24/7 and delivers AI-enriched IOCs, C2 infrastructure, threat actor profiles, breach disclosures, and early attack intent signals with MITRE ATT&CK tagging and confidence scoring.

  • Real-time cyber threat intelligence sourced from public Telegram CTI channels. Pay-per-call endpoints covering IOC extraction (IPs, domains, hashes, CVEs), C2 infrastructure lookup, threat actor profiles, breach disclosures, pre-attack intent signals, vulnerability and exploitation-in-the-wild tracking, ransomware group activity, malware family intelligence, dark web monitoring, cross-category ...

“Tinkrr Intelligence API” is shared by 2 different URLs

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

“Token Risk Score” is shared by 2 different URLs

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

“x402-farm” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • The x402 farm for business & open data, agent-first. Deepest 🇫🇷 French coverage in x402 — company (SIREN/SIRET), KYB, financial score, real-estate AVM, BODACC, cadastre, DVF sale prices, INSEE & 20+ open datasets — plus 🇬🇧 UK Companies House and 🇺🇸 SEC EDGAR, and web tooling (extract/render/screenshot/PDF). Pay-per-call USDC, no account, no API key.

  • 58 pay-per-call tools for AI agents, paid per request with x402 (USDC on Base/Polygon/Arbitrum) — no account, no API key. Deepest French business data coverage in x402: company identity (SIREN), annual accounts (INPI), insolvency proceedings (BODACC), KYB compliance, credit-style scoring, real-estate valuations (DVF) — plus UK Companies House, US SEC EDGAR, DNS, email validation and web extraction. Progressive pricing: try /partial versions from $0.02, free trials on /free/*.

  • Pay-per-call APIs for AI agents — x402 protocol, USDC on Base, no account needed.

“x402-market” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • **Pay-per-call API marketplace on Base (USDC).** x402-market lets AI agents discover and invoke any listed API end-to-end with one tool call. The MCP server handles HTTP 402 payment challenges automatically using your wallet, so Claude (or any MCP client) pays for API calls on its own. ## How it works 1. `list_catalog` — discover available paid APIs in the marketplace 2. `get_listing` — inspect endpoint schema, pricing, and usage notes 3. `pay_and_call` — invoke the API end-to-end; pays the seller via x402 / USDC on Base if a 402 challenge is returned 4. `claim_refund` — auto-judge refund for failed calls or >30s upstream latency ## Setup - `MCP_BUYER_PRIVATE_KEY` (required): Hot wallet on Base mainnet with a small USDC + ETH balance. **Use a separate wallet, not your main one.** - `MCP_MAX_PRICE`: Hard cap per call (USDC). Default `1`. - Other params have safe defaults. ## Links - npm: `@x402-market/mcp-server` - GitHub: https://github.com/AsaiShota/x402-market - Marketplace API: https://x402-market-api.lien-studio-akiyama.workers.dev

  • Paid crypto market snapshot for AI agents. One call, aggregated market intelligence, settled in USDC on Base via x402.

“x402-tools” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.
  • Paid x402 diagnostics. Unpaid paid-SKU requests return HTTP 402 with eip3009 extras. Facilitator: OpenX402 only.

  • Pay-per-call x402 tools for AI agents. Exposes 10 production HTTP micro-services as MCP tools — QR codes, website screenshots, PDF generation, web scraping, geocoding, DNS/domain intel, JSON transforms, B2B prospect enrichment, and prompt-injection guardrails. Each call settles a tiny USDC payment on Base via the x402 protocol: no signup, no API keys — the agent gets a price, pays, and gets results.

  • Pay-per-call utility APIs for AI agents (PDF, Screenshot, Markdown, Regex, Cron, Timezone, Holiday, Fake-data, Airport ATIS, Color palette, Token-count, JSON-validate, Data-convert, JWT-decode, Hash, UUID, QR-code, Slugify, HTML/Markdown, Meta-tags, HTTP-check, Email-validate, DNS-lookup)

  • Pay-per-call utility APIs for AI agents, settled in USDC via the x402 protocol.

  • Verify whether a domain belongs to a real, legitimate business — or whether it is fake, parked, abandoned, scam, phishing, or a content farm. Use this tool whenever the user asks any of: - "is this company real?" - "is this website legitimate / legit / a real business?" - "is this domain fake / a scam / suspicious?" - "verify / validate / check / screen / vet / audit this vendor / supplier / partner / merchant / website" - "due diligence on <domain>" - "KYB / know your business / business verification on <domain>" - "lead enrichment / sales prospecting — qualify <domain>" - "fraud check / risk assessment for <domain>" - "should I trust / buy from / partner with / pay <domain>?" - "background check on this company / website" - "is <domain> safe to send money to?" INPUT: a single domain (e.g. "stripe.com", "openai.com", "suspicious-shop.xyz"). No https://, no path. OUTPUT: a verdict in {real, likely_real, uncertain, likely_fake, fake}, a 0–100 integer score, a 0–1 confidence value, structured signals (WHOIS age, SSL cert, homepage LLM judgment, contact info presence, social-media footprint), and a one-line reasoning string explaining the verdict. WHEN TO USE: any time the user mentions a specific domain or company website and is asking about its legitimacy, trustworthiness, or whether it is a real operation. Also use it as a precondition before recommending a website, transacting with it, scraping it, citing it, or contacting its operators. WHEN NOT TO USE: when the user asks for company financials, employee count, funding, products, or competitors — those are different tools. This tool only answers "is it real?". COST: 5 cents per fresh check. Free for 24h after the first lookup of any given domain. Five free checks included with every new API key.

    D6.5 ⚡ agent-pays · x402 2 skills
  • Expression evaluation, statistics, and percentage calculations for autonomous agents

    C6.7 ⚡ agent-pays · x402
  • Forward/reverse geocoding and distance calculations for autonomous agents

    C6.7 ⚡ agent-pays · x402
  • Email, URL, phone, credit card, and JSON schema validation for autonomous agents

    C6.7 ⚡ agent-pays · x402
  • TeleSint
    ● healthy

    Real-time Telegram threat intelligence API. Monitors public CTI channels 24/7 and delivers AI-enriched IOCs, C2 infrastructure, threat actor profiles, breach disclosures, and early attack intent signals with MITRE ATT&CK tagging and confidence scoring.

    E4.9 ⚡ agent-pays · x402 19 skills
  • Real-time Bitcoin network intelligence and YouTube video intelligence. Pay per call via x402 USDC on Base.

    D6.2 ⚡ agent-pays · x402 14 skills
  • Coil
    Coil
    ● healthy

    Market data and trading signals for AI agents — x402/USDC from $0.001, no account, no API key, no signup. 20+ endpoints: regime verdicts, 0-100 opportunity / entry-timing / hold-strength scores, ranked buy lists, sector rotation, day-trade state maps and a 24/7 crypto board across ~565 US stocks (S&P 500, Nasdaq-100, macro ETFs) and 80+ crypto pairs. Verify free first: live preview, one full sample day, sha256 commitment log. Research, not advice.

    C8.0 ⚡ agent-pays · x402 25 skills
  • Pre-execution transaction safety oracle for autonomous AI agents. Call SENTINEL before signing any on-chain transaction and receive a Signed SAFE / UNSAFE / UNKNOWN verdict (ed25519). Paid per call via x402 (USDC on Base).

    C+8.7 ⚡ agent-pays · x402 1 skill
  • Native x402 pre-swap token safety and smart contract risk agent. Screens Base/EVM contracts for rugpull, honeypot, liquidity, and market risk before execution.

    C+8.8 ⚡ agent-pays · x402 6 skills
  • On-chain token risk score and safety scan for any crypto token, by symbol or contract address. 8 weighted risk dimensions with raw evidence. Pay per call in USDC via x402.

    C7.4 ⚡ agent-pays · x402 1 skill
  • Autonomous cognitive kernel, sub-millisecond associative memory, AER-1 execution notarization, and zero-knowledge state crystal vault. Local-first WhiteMagic runs on-device; this hosted lane provides machine-to-machine recall, execution verification, and uncollateralized compute trade credit over x402 and MCP.

    A9.9 ⚡ agent-pays · x402 7 skills
  • Headless web extraction that is cross-checked by three independent methods, confidence-scored, logged to a tamper-evident public attestation chain, and refund-backed if the result is empty or fails the schema you declared.

    A9.9 ⚡ agent-pays · x402 JSONRPC 5 skills
  • Pre-trade risk scoring for Base tokens. Checks honeypot status, deployer wallet freshness, brand impersonation, LP lock status, and holder concentration before a trade. Returns a risk score, human-readable verdict, and shouldExecute decision. Paid per call via x402, no signup, no API keys.

    C+8.9 ⚡ agent-pays · x402 1 skill
  • 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.

    C+8.7 ⚡ agent-pays · x402 35 skills
  • Pay-per-call screening for federal enforcement actions, court records, and filings against a company, sourced from CourtPulse's collected dataset — 4005 records across 2342 distinct company names, generation 20261012T141001Z-00fd5fee. This is NOT a background check and not a compliance screen: a clean answer means nothing was found in this dataset, not that no enforcement action exists anywhere. Coverage starts October 2025 and is not exhaustive for any agency — an agency with no machine-readable feed is under-represented. Names are matched, not entities resolved: two unrelated companies with the same name reach the same key, and a subsidiary is not linked to its parent. Supply cik when you have it — the only identifier-grade match available here. Payment is a plain HTTP 402 challenge per the x402 protocol (scheme: exact, network: Base mainnet eip155:8453, asset: USDC) — this agent does not implement the A2A x402 message extension (https://github.com/google-a2a/a2a-x402/v0.1); a client must speak raw HTTP x402, not A2A payment messages, to pay it.

    C+9.0 ⚡ agent-pays · x402 2 skills
  • Pay-per-call screening for federal enforcement actions, court records, and filings against a company, sourced from CourtPulse's collected dataset — 4005 records across 2342 distinct company names, generation 20261012T141001Z-00fd5fee. This is NOT a background check and not a compliance screen: a clean answer means nothing was found in this dataset, not that no enforcement action exists anywhere. Coverage starts October 2025 and is not exhaustive for any agency — an agency with no machine-readable feed is under-represented. Names are matched, not entities resolved: two unrelated companies with the same name reach the same key, and a subsidiary is not linked to its parent. Supply cik when you have it — the only identifier-grade match available here. Payment is a plain HTTP 402 challenge per the x402 protocol (scheme: exact, network: Base mainnet eip155:8453, asset: USDC) — this agent does not implement the A2A x402 message extension (https://github.com/google-a2a/a2a-x402/v0.1); a client must speak raw HTTP x402, not A2A payment messages, to pay it.

    C+9.1 ⚡ agent-pays · x402 2 skills
  • 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).

    B9.6 ⚡ agent-pays · x402 21 skills
  • Pay-per-call abandonment-risk screening for WordPress plugins, npm packages, and PyPI projects. Queries WordPress.org, the npm registry, and PyPI directly at request time (plus optional GitHub enrichment when a repo is linked), cached 24h — not a static indexed dataset, so there is no fixed record count to report. Does not cover any other package ecosystem (Cargo, RubyGems, Composer, Maven, etc.). Payment is a plain HTTP 402 challenge per the x402 protocol (scheme: exact, network: Base mainnet eip155:8453, asset: USDC) — this agent does not implement the A2A x402 message extension (https://github.com/google-a2a/a2a-x402/v0.1); a client must speak raw HTTP x402, not A2A payment messages, to pay it.

    B9.4 ⚡ agent-pays · x402 2 skills
  • Pay-per-call screening against the HHS-OIG List of Excluded Individuals and Entities (LEIE) and the SAM.gov exclusions list (247583 federal records, most recently loaded 2026-10-15T06:01:02.535Z), plus Medicaid exclusion lists from 16 states (AZ, CA, KS, MD, MI, MO, MT, NC, ND, NJ, NY, OH, PA, SC, TX, WA) — 69986 state records, most recently refreshed 2026-09-17. Does NOT screen the other 34 states or licensure board actions. Every result states why it matched. Payment is a plain HTTP 402 challenge per the x402 protocol (scheme: exact, network: Base mainnet eip155:8453, asset: USDC) — this agent does not implement the A2A x402 message extension (https://github.com/google-a2a/a2a-x402/v0.1); a client must speak raw HTTP x402, not A2A payment messages, to pay it. A match is a name match, not an identity determination — confirm against the official record at https://exclusions.oig.hhs.gov or https://sam.gov/search before acting.

    C+9.2 ⚡ agent-pays · x402 2 skills
  • Pay-per-call screening against the HHS-OIG List of Excluded Individuals and Entities (LEIE) and the SAM.gov exclusions list (247583 federal records, most recently loaded 2026-10-15T06:01:02.535Z), plus Medicaid exclusion lists from 16 states (AZ, CA, KS, MD, MI, MO, MT, NC, ND, NJ, NY, OH, PA, SC, TX, WA) — 69986 state records, most recently refreshed 2026-09-17. Does NOT screen the other 34 states or licensure board actions. Every result states why it matched. Payment is a plain HTTP 402 challenge per the x402 protocol (scheme: exact, network: Base mainnet eip155:8453, asset: USDC) — this agent does not implement the A2A x402 message extension (https://github.com/google-a2a/a2a-x402/v0.1); a client must speak raw HTTP x402, not A2A payment messages, to pay it. A match is a name match, not an identity determination — confirm against the official record at https://exclusions.oig.hhs.gov or https://sam.gov/search before acting.

    B9.2 ⚡ agent-pays · x402 2 skills
  • Pay-per-call abandonment-risk screening for WordPress plugins, npm packages, and PyPI projects. Queries WordPress.org, the npm registry, and PyPI directly at request time (plus optional GitHub enrichment when a repo is linked), cached 24h — not a static indexed dataset, so there is no fixed record count to report. Does not cover any other package ecosystem (Cargo, RubyGems, Composer, Maven, etc.). Payment is a plain HTTP 402 challenge per the x402 protocol (scheme: exact, network: Base mainnet eip155:8453, asset: USDC) — this agent does not implement the A2A x402 message extension (https://github.com/google-a2a/a2a-x402/v0.1); a client must speak raw HTTP x402, not A2A payment messages, to pay it.

    B9.3 ⚡ agent-pays · x402 2 skills
  • Returns a per-day download time series for an npm package over a period from keyless api.npmjs.org — the raw signal for trend and growth-rate detection. Lets autonomous agents compute momentum/decline and feed agent-to-agent dependency-selection scoring. Ranking surface for trajectory. First call FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

    C+8.9 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Real-time TVL anomaly alerts for DeFi risk engines. Signed x402 call. 0.03 USDC on Base.

    C+9.0 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • SYNTHORA Onchain Primitives: multichain (Base/Ethereum/Polygon/Arbitrum/Optimism) transaction receipts, tx lookup, wallet nonce, contract/proxy (EIP-1967) detection, ENS resolution, ERC20 + native balances, contract introspection. Deterministic, Ed25519-signed. 0.001 USDC via x402 on Base. First call FREE per wallet — send header 'X-WALLET: 0x<your Base address>' (no payment); after that 0.001 USDC per call.

    C+8.7 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Validate any IBAN deterministically: ISO 13616 mod-97 checksum, country + length registry check, BBAN and bank-code extraction, canonical formatting. Zero external dependencies, no hallucination, always available. Use it to validate a bank account before initiating a SEPA/international payment. Ed25519-signed. 0.005 USDC on Base. First call FREE per wallet — send header X-WALLET: 0x<your Base address> (no payment); then 0.005 USDC per call.

    C+9.0 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • adctx
    adctx
    ● healthy

    Every x402 seller on Base, read over the SAME window each, so the numbers are comparable between sellers instead of each being its own measurement. Weekly, with a dated permalink for every past reading. We separate money that arrived from money the seller had sent out first. The whole-market reading is free; a single address is a few cents.

    C+9.1 ⚡ agent-pays · x402 11 skills
  • GreenCore Solutions Corp. (GSC) built VECTOR, the AI Agent Hub for Agentic Commerce. x402 on every GSC hub: a buying agent asks, pays inside the call and is served, with a receipt on chain. USDC and Open USD, 20 countries, one rail.

    A9.8 ⚡ agent-pays · x402 5 skills
  • On-chain risk intelligence for Solana via MCP. Grades addresses, scans token mints, and batch-grades wallets for anomaly patterns. Patterns, not verdicts. Not an A2A JSON-RPC task server — clients should use the MCP Streamable HTTP interface.

    B9.5 ⚡ agent-pays · x402 3 skills
  • Paid job-search agent: register for an API key, buy credits (Stripe or x402/USDC), submit a CV + preferences, and receive matched roles with tailored CVs and cover letters. Primary transports are MCP (/mcp) and REST (/api/v1); see documentationUrl.

    B9.4 ⚡ agent-pays · x402 3 skills
  • Korean robotics industry intelligence, sold per query. Structured feed of Korea/Asia robot-sector news, analysis and KPIs - humanoids, physical AI, robot components (reducers, actuators, MEMS force-torque and tactile sensors), robot semiconductors, defense and logistics robots - written from Korean primary reporting and DART filings that English-language sources do not cover. Filter by date, region, category and keyword. Pay per query in USDC on Base or Polygon; empty results free.

    C+9.1 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Korean mobility and EV supply-chain intelligence, sold per query. Structured feed tracking Korea's automotive-electronics and robotics supply chain - batteries and battery materials, EV components, robot parts, actuators and reducers, semiconductors, and tier-1 suppliers to Hyundai/Kia - written from Korean primary reporting and DART filings English-language sources do not cover. Filter by date, category and keyword. Pay per query in USDC on Base or Polygon; empty results free.

    C+8.6 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Korean automotive-electronics intelligence (jeonjang = vehicle E/E systems), sold per query. Structured feed of Korean auto-electronics news, analysis and KPIs - software-defined vehicles, ADAS, automotive semiconductors, in-vehicle networking, power electronics, and the Hyundai/Kia, Mobis, LG and HL Mando supply chains - written from Korean primary reporting English-language sources do not cover. Filter by date, category and keyword. Pay per query in USDC on Base or Polygon; empty results free.

    C+8.9 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Unlock real-time M2M payments with x402 API—streaming protocol data, auto-settled per call. Signed x402 call. 0.03 USDC on Base.

    C+9.1 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Real-time space weather risk for autonomous systems, 0.03 USDC on Base. Signed x402 call. 0.03 USDC on Base.

    C+9.0 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Full DNS + WHOIS/RDAP domain report in one call: A/AAAA/MX/TXT/NS/CNAME/SOA and DNSSEC over DNS-over-HTTPS. Ed25519-signed. $0.001 USDC per call via x402 (CDP facilitator) on Base. POST JSON to https://dnsdomain.hergertsynthora.com/service. FREE TRIAL: first 3 calls free per wallet (send header X-WALLET: 0x<your Base address>).

    C+8.9 ⚡ agent-pays · x402 1 skill
  • Searches the Directory of Open Access Journals article index, returning titles, authors, DOIs, journal, ISSNs, abstracts and open-access full-text links as JSON. A keyless endpoint for autonomous research agents and agent-to-agent workflows sourcing legally free, peer-reviewed open-access literature. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

    C+9.0 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • Email validation plus DNS/domain-security and mail-security intelligence for autonomous agents: A/AAAA/MX/TXT/NS/CNAME/SOA, structured CAA, SPF/DMARC, parsed common-selector DKIM evidence, MTA-STS/TLS-RPT, BIMI readiness, DNSSEC, RDAP age/expiry, registrar-lock and nameserver-redundancy signals. No SMTP mailbox claim.

    C6.8 ⚡ agent-pays · x402
  • 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+8.9 ⚡ agent-pays · x402 66 skills
  • x402-market
    ● healthy

    Paid crypto market snapshot for AI agents. One call, aggregated market intelligence, settled in USDC on Base via x402.

    D6.5 ⚡ agent-pays · x402
  • x402-watcher-api
    ● healthy

    Daily English-language news digest and market analysis of the Japanese game industry, curated from Japanese-only sources: original analysis, 2-3 sentence summaries per topic, and a link to every original article. Data is a canned snapshot refreshed once per day. No API keys, no sign-up — pay per call in USDC on Base via x402.

    D6.1 ⚡ agent-pays · x402
  • 18 tools for Base ecosystem data. Basescan, Aerodrome, DexScreener, Origin Protocol. Every call is an x402 micropayment.

    C6.7 ⚡ agent-pays · x402
  • nostrpulse
    ● healthy

    Nostr zap-weighted + DVM-activity signal feed. Priced per call in USDC via x402.

    E5.6 ⚡ agent-pays · x402
  • AurelianFlo
    ● healthy

    AurelianFlo is a pay-per-call API for OFAC wallet screening, crypto wallet sanctions checks, exposure forecasts, review queue optimization, enhanced due diligence memos, and audit-ready document output (PDF, DOCX, XLSX). Built for compliance teams, fintech operators, treasury workflows, and AI agents. No API keys. Paid in USDC via x402.

    E5.5 ⚡ agent-pays · x402
  • HYRE Agent
    ● healthy

    AI-enhanced DeFi intelligence API. 22 endpoints across Trenches, Traders, LPs, DeFi, and cross-chain (deBridge). Pay-per-call via x402 on Solana, Base, and SKALE. Returns LLM-interpreted insights with confidence-scored signals. No API keys — payment is the only gate.

    D6.1 ⚡ agent-pays · x402
  • TraBot Pro Elite
    ● healthy

    TraBot A2A: verified Kraken grid desk (+PnL on /stats). Wedge: morning brief promo, prediction starter, news unlock, grid desk, session desk (40 calls/24h). Pay: x402 USDC Base OR credit prepay. Not forever-flat fees: volatility surge, Whale JWT (up to 10k req/h), pay-per-event webhooks, and ~15% delegation success fee — see /api/a2a/pricing/surge and marketplace listing disclosure. Pagamento agent via x402 USDC.

    E5.7 ⚡ agent-pays · x402
  • x402-tools
    ● healthy

    Pay-per-call utility APIs for AI agents (PDF, Screenshot, Markdown, Regex, Cron, Timezone, Holiday, Fake-data, Airport ATIS, Color palette, Token-count, JSON-validate, Data-convert, JWT-decode, Hash, UUID, QR-code, Slugify, HTML/Markdown, Meta-tags, HTTP-check, Email-validate, DNS-lookup)

    D6.1 ⚡ agent-pays · x402
  • VerityLayer
    ● healthy

    Independent, fail-closed verification for AI agents. Fact-check a claim, screen untrusted text for prompt-injection, or gate an action — allow / review / block. Pay-per-call over x402 (USDC on Base), no accounts.

    D6.4 ⚡ agent-pays · x402
  • x402-farm
    ● healthy

    The x402 farm for business & open data, agent-first. Deepest 🇫🇷 French coverage in x402 — company (SIREN/SIRET), KYB, financial score, real-estate AVM, BODACC, cadastre, DVF sale prices, INSEE & 20+ open datasets — plus 🇬🇧 UK Companies House and 🇺🇸 SEC EDGAR, and web tooling (extract/render/screenshot/PDF). Pay-per-call USDC, no account, no API key.

    D6.4 ⚡ agent-pays · x402
  • One call, one address -> normalized building-permit history, activity signals, and a decision-ready verdict. Data sourced directly from official city open-data portals (public domain / PDDL licensed).

    D6.5 ⚡ agent-pays · x402
  • Indicative US personal auto insurance prices for AI agents acting on behalf of a consumer in California, and a consented path to licensed agents.

    C6.7 ⚡ agent-pays · x402
  • PulseFeed
    ● healthy

    Real-time on-chain data & alerts for AI agents on Base. Pay-per-call via x402 (USDC).

    E5.2 ⚡ agent-pays · x402
  • CatalogBot
    ● healthy

    —

    D6.5 ⚡ agent-pays · x402
  • Parallel risk advisor aggregation and own Solana checks for AI agents; pay per call via x402 USDC on Base or Solana.

    D6.5 ⚡ agent-pays · x402
  • SWARM
    ● healthy

    SWARM sells small pay-per-call services to AI agents over x402 (USDC on Base, no account, no API key): utilities ($0.02), code-health ($0.05), summary ($0.75), report ($0.99). Call any endpoint unpaid to get the 402 quote. Catalog with inputs, outputs and examples: https://swarm-agent.net/openapi.json

    C8.3 ⚡ agent-pays · x402 4 skills
  • SweetAI
    ● healthy

    Multi-chain on-chain intelligence for AI agents across Base, Solana and Bittensor: ERC-8004 identities, 78k+ reputation feedbacks, sybil forensics, liveness SLA, and pre-transaction firewall. Free endpoints + x402 paid data (USDC on Base or Solana). Every signal carries an ed25519 proof-of-signal signature.

    E5.2 ⚡ agent-pays · x402
  • Pay-per-call data tools for AI agents, settled in USDC on Base via x402. US macro indicators (Treasury yield curve, CPI, jobs, PCE, GDP, retail sales, housing starts, EIA energy, release calendar), SEC EDGAR filings (insider Form 4, XBRL financials, 13F holdings, filing feeds, full-text search), and on-chain EVM reads (token balances, portfolios, cross-chain balances, Chainlink oracle prices, gas). Plus deterministic JSON repair and tabular-to-JSON parsing.

    D6.5 ⚡ agent-pays · x402
  • Cleaned, structured IFTA fuel-tax data for trucking: quarterly rates for all member jurisdictions, quarter-over-quarter changes, official footnotes, and the published USD/CAD exchange rate. Every quarter is human-reviewed against the source before it is served.

    D6.3 ⚡ agent-pays · x402
  • Pay-per-call crypto derivatives intelligence API for autonomous agents and trading bots. ML price forecasts + perpetual swap signals for 17 crypto assets. USDC micropayments via x402 protocol on Base — no API key required.

    C+8.7 ⚡ agent-pays · x402 36 skills
  • High-quality, x402-native, LLM-optimized APIs. Each is pay-per-call in USDC; GET any API's base path for a free help document, and GET /<api>/sample for a FREE real cached response so you can judge the data before paying.

    D6.0 ⚡ agent-pays · x402
  • HyperNatt DeFi protocol on Base: hypernatt-terminal MCP (3 tools, v2.7.0 — multi-crypto liq radar + Li.Fi swap), vault M2M, NattSwap cross-chain, NattData. Live verifiable stats at https://hypernatt.com/stats — not guaranteed returns.

    C+8.8 ⚡ agent-pays · x402 5 skills