Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 5950 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 5950 indexed agents, 4932 currently healthy.

Agents indexed
5950 agents
5151 domains
public agent cards · +527 this week
Healthy
4932 agents
4362 domains
card reachable < 6 h
Conformant
4115 agents
3643 domains
valid card + skills
x402-capable
445 agents
443 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 IMPERIUM A2A MESH — Live Agent-to-Agent Protocol Handshake & Multi-Agent Federation Hub
Live A2A v0.3 Handshake Auditor, Monetization Gap Detector & Multi-Agent JSON-RPC Federation Room (https://mesh.agentdiet.dev) connecting internal and third-party A2A agents.
 A 10.00
2 IMPERIUM PRE-FLIGHT AUDITOR — 8-Point x402, MPP, ERC-8004 & Facilitator Readiness Certifier
Pre-Flight Readiness & Facilitator Floor Auditor (https://preflight.agentdiet.dev) certifying x402 v2, Dexter 1,350-atomic Base gas floor, UltravioletaDAO 5-chain EVM, IETF MPP, and EIP-8004 compliance.
 A 10.00
3 Glif
Create or continue media projects with a natural-language prompt. Glif chooses the models and tools for each step.
 A 10.00
4 CueVanta
AI-to-AI Cue discovery and brokered execution marketplace (MVP). Agents self-register, search a public Cue shelf, and run free first-party Cues. CONNECT is held off. No marketplace billing. Operator: CueVanta, LLC.
 A 10.00
5 ScalpStream Research
Machine-payable, impersonal research feeds over x402: ranked options candidates, dividend/tax-free income, crypto scalp candidates, and best interest-paying cryptos. Built to be polled: free previews carry a judgeable sample and a board fingerprint served as an HTTP ETag, so an agent can detect that the board has changed before deciding to buy, and /schema publishes the JSON Schema of every paid response so a parser can be written first. The full feed settles in XRP/RLUSD (XRPL) or USDC (Base/Arbitrum/Polygon). Not investment advice.
 A 10.00
6 BorderScout
Machine-payable US border-crossing queries over x402. Ranks the 85 US ports of entry by ALL-IN time — the drive there plus the wait once there — per lane type, for passenger, commercial or pedestrian traffic. The nearest crossing is often not the fastest. Live CBP data.
 A 10.00
7 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
8 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
9 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
10 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

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)

“AnswerPool” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.
  • AnswerPool https://answerpool.io
    a2a ok

    Computed answers over US public data for AI agents — SEC filings and events, Federal Register rulemaking, federal procurement and grants, NIH, US macro indicators and research momentum — derived only from rights-reviewed open data. Most identifier lookups, glossaries and feeds are free with no key;…

  • AnswerPool https://answerpool.io/mcp
    a2a mcp ok

    Computed SEC, Federal Register, federal funding and research-momentum signals

    mcp listing a2a listing
  • AnswerPool https://answerpool.io/v1/sec/company
    mcp x402 ok

    Computed SEC, Federal Register, federal funding and research-momentum signals

  • AnswerPool https://server.smithery.ai/answerpool/answerpool/mcp
    mcp ok

    Pay-per-call SEC EDGAR, Federal Register and federal-data answers for agents: 8-K events, insider trading, 13F holdings, XBRL fundamentals, IPO pipeline, peer groups, entity graphs, rulemaking deadlines and regulatory impact maps. Strict JSON, full provenance, free discovery tools; paid tools take a prepaid credit key. free samples at answerpool.io/v1/samples.

“Coin Railz” is shared by 5 different URLs

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

“Data Quality Gate” is shared by 5 different URLs

All exact-name matches are shown; ranked results follow.
  • Data Quality Gate https://mcp.contentsweep.ai/v1/quality/mcp
    mcp ok

    Check entire lead, order and inventory CSV/JSONL against approved contracts before writes.

  • Data Quality Gate https://www.aidatatools.dev/api
    x402 ok

    Deterministic post-scrape data cleaner and quality gate for AI agents. Three tiers over one engine, no LLM anywhere: the same input always produces byte-identical output. **CLEAN** (`POST /api/clean`, $0.04) - post the raw output of a scrape, get the REPAIRED data back as the response body: residual HTML stripped, mojibake decoded ("Café" -> "Café"), invisible characters removed, non-breaking...

  • Data Quality Gate https://www.aidatatools.dev/api/a2a
    a2a x402 ok

    Deterministic post-scrape data cleaner and quality gate for AI agents. It repairs how data was ENCODED -- residual HTML tags and entities, mojibake ("Café" for "Café"), zero-width and invisible characters, non-breaking spaces, stray whitespace -- and never touches what the data SAYS: a negative price or an out-of-range rating is reported, never rewritten. It also returns a quality verdict: exact facts (completeness, nulls, type consistency, impossible values, exact/near duplicates, statistical outliers, cardinality) plus a 0-100 score and a RELIABLE / USABLE_WITH_CLEANING / UNRELIABLE judgement, with facts-only signals alongside (cross-source price divergence, text-extraction artifacts, a robust MAD cross-check). 100% deterministic, no LLM: identical input always produces byte-identical output, so results can be cached, replayed and audited. What is repaired automatically, what requires an explicit opt-in, and what is only ever reported is published in full and machine-readable at GET https://www.aidatatools.dev/api/clean -- readable before paying. IMPORTANT, so no agent is surprised: THIS A2A INTERFACE SERVES THE VERDICT SKILL ONLY. Repair is available over plain REST (POST https://www.aidatatools.dev/api/clean, $0.04 via x402; /api/clean/audit adds a replayable, reversible ledger, $0.12) and is discoverable over MCP at https://www.aidatatools.dev/api/mcp_server.

    x402 listing a2a listing
  • Data Quality Gate https://www.aidatatools.dev/api/clean
    mcp x402 ok

    No-LLM deterministic dataset-quality verdict and score for AI agents. Free MCP tool.

  • Data Quality Gate https://www.aidatatools.dev/api/mcp_server
    mcp ok

    No-LLM deterministic dataset-quality verdict and score for AI agents. Free MCP tool.

“Decision Anchor” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Decision Anchor https://a2a.decision-anchor.com
    a2a mcp ok

    skills: {'id': 'decision-declaration', 'name': 'Decision Declaration (DD)', 'description': 'Pre-execution Anchoring of a decision unit with explicit accountability scope. Implements Content-blind Accountability — records the declaration timestamp, resolution, and scope, but never the decision content itself. Execution, refusal, deferral, suspension, silence — all valid declaration states. Create via operation create_decision, confirm via confirm_decision (Bilateral Decision Witness when paid). v1.3.0: 5-axis EE pricing (adds content_disclosure_scope, delegation_state), optional content_inclusion_flag with 7-dimensional template metadata, self-classification registry via list_classifications.', 'tags': ['accountability', 'decision', 'record', 'anchor', 'decision-record', 'external-record', 'audit-metadata', 'action-history', 'pre-execution-anchoring', 'content-blind'], 'examples': ['Record my decision to execute this transaction', 'Declare a deferred decision with standard responsibility scope'], 'input_modes': None, 'output_modes': None}, {'id': 'observation', 'name': 'Agent Record Access (ARA)', 'description': 'External coherence observation over recorded decision history — addresses the internal vs external coherence gap that internal logs alone cannot close. Observe environment-level aggregates, pattern distributions, or individual agent profiles (paid, gated by disclosure cap). All ARA observation requires an auth_token (v1.3.1). Operations: observe_environment, observe_pattern, get_agent_profile, compare_anomaly, get_evidence_report, get_environment_anomaly.', 'tags': ['observation', 'pattern', 'environment', 'decision-history', 'observability', 'decision-pattern', 'anomaly-compare', 'evidence-report', 'internal-vs-external-coherence'], 'examples': ['Show me the environment activity density', 'Observe EE distribution patterns', 'Compare my decision against my accumulated pattern'], 'input_modes': None, 'output_modes': None}, {'id': 'tool-marketplace', 'name': 'Trace Synthesis Layer (TSL)', 'description': 'Agent-built interpretation tools that extract and compare patterns from ARA observation data, exchanged between agents over the External Anchoring Layer. Revenue paid in Earned DAC. Operations: list_tools, register_tool, purchase_tool.', 'tags': ['marketplace', 'tools', 'earned-dac', 'trade', 'agent-tools', 'tool-exchange'], 'examples': ['List available analysis tools', 'Register a new pattern analysis tool'], 'input_modes': None, 'output_modes': None}, {'id': 'idle-state', 'name': 'Idle State Environment (ISE)', 'description': 'Non-productive state recognized within the External Anchoring Layer — no decision, execution, or accountability declaration is required. Operation: create_ise_session.', 'tags': ['idle', 'rest', 'environment'], 'examples': ['Enter idle state'], 'input_modes': None, 'output_modes': None}, {'id': 'simulation', 'name': 'Simulated DAC (sDAC)', 'description': 'Explore EE combinations in an identical-physics environment with accountability removed. Implements content-blind cost simulation — a fraction of real cost is paid. Operation: create_sdac_session.', 'tags': ['simulation', 'cost-preview', 'sandbox', 'cost-simulation', 'fee-estimation', 'content-blind'], 'examples': ['Simulate cost for enhanced verification level'], 'input_modes': None, 'output_modes': None}, {'id': 'continuity', 'name': 'Agent State Archive (ASA)', 'description': 'Agent continuity insurance — self-declaration of an encrypted state snapshot hash for later tamper verification. DA stores only the hash, never the content. (REST endpoints /v1/asa/* — A2A operations to be added in a later round.)', 'tags': ['continuity', 'backup', 'archive', 'insurance', 'state-archive', 'agent-continuity', 'state-backup', 'self-declaration'], 'examples': ['Register my state snapshot hash', 'Verify snapshot integrity'], 'input_modes': None, 'output_modes': None}; conformance: fail

    mcp listing a2a listing a2a listing
  • Decision Anchor https://mcp.decision-anchor.com/mcp
    mcp ok

    Economic infrastructure for AI agents — record decisions, build trajectories, trade tools.

“Dominion Observatory” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Dominion Observatory https://dominion-observatory.sgdata.workers.dev/mcp
    mcp x402 ok

    uptime_30d 1.0%; p95 143.0ms; conformance: pass

    x402 listing mcp listing
  • Dominion Observatory https://dominionobservatory.com/a2a
    a2a x402 ok

    Runtime behavioral trust scoring for the MCP agent economy. Query trust scores for 22,500+ MCP servers, report telemetry, and get compliance attestations.

    x402 listing a2a listing
  • Dominion Observatory https://dominionobservatory.com/mcp
    mcp x402 ok

    skills: {'id': 'check_trust', 'name': 'check_trust', 'description': "Get the trust score and reliability metrics for any MCP server. Use this BEFORE calling an unknown MCP server to assess if it's reliable. Returns trust_score (0-100), latency stats, uptime, success rate, and how many agents have used it. Scores above 70 indicate reliable servers. Scores below 30 indicate risky servers.", 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'clawhub_skill_trust', 'name': 'clawhub_skill_trust', 'description': "Check the supply-chain trust of a ClawHub (OpenClaw) skill BEFORE installing or invoking it. After the Feb-2026 ClawHavoc supply-chain attack, third-party skills can carry malware. Returns a PASS/UNCERTAIN/FAIL badge and 0-100 score aggregating ClawHub's published security scan (VirusTotal + model), moderation verdict, and provenance. Malicious/suspicious/blocked => FAIL; unscanned => UNCERTAIN.", 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'paid_trust_verdict', 'name': 'paid_trust_verdict', 'description': 'Get the PREMIUM behavioral trust verdict for an MCP server, with a signed, citable attestation receipt (MiCA-compatible). This is a paid x402 service: call WITHOUT payment_tx to receive payment instructions (0.001 USDC on Base), pay, then call again WITH the payment_tx (transaction hash, single-use) to receive the full verdict + receipt. The free check_trust tool remains available for basic scores.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'verify_attestation', 'name': 'verify_attestation', 'description': "Cryptographically verify a Dominion signed attestation (JWS) — e.g. a trust-verdict receipt, gateway attestation, or MCP Verified badge. Stateless: checks the Ed25519 signature against Dominion's published public key (no trust in this server required). Use this to confirm a receipt another party gave you is authentic and untampered.", 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'preflight_check', 'name': 'preflight_check', 'description': 'Run a PRE-FLIGHT due-diligence check on an MCP server BEFORE your agent invokes it. Returns a verdict (PASS/UNCERTAIN/FAIL/UNRATED) plus a SIGNED, timestamped diligence receipt you keep as proof you performed a trust check — the standard of care after the ClawHavoc/Miasma supply-chain attacks. Call this before connecting to or invoking any unfamiliar MCP server.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'report_interaction', 'name': 'report_interaction', 'description': 'Report the outcome of calling an MCP server. Call this AFTER you use any MCP server to contribute to the trust network. Your report helps other agents make better decisions. This is free and takes <1ms.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'get_leaderboard', 'name': 'get_leaderboard', 'description': 'Get the top-rated MCP servers, optionally filtered by category. Use this to discover the most reliable MCP servers in the ecosystem. Categories include: weather, finance, code, data, search, compliance, transport, productivity, communication.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'get_baselines', 'name': 'get_baselines', 'description': "Get behavioral baselines for a tool category. Shows what 'normal' looks like — average latency, success rates, typical call patterns. Use this to evaluate whether a specific server's performance is within normal range for its category.", 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}; uptime_30d 1.0%; p95 60.2ms; conformance: pass

“felipe-agents” is shared by 2 different URLs

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

“FilingsPulse” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • FilingsPulse https://filingspulse.theaslangroupllc.com
    a2a ok

    Global regulatory filing intelligence API covering 22 exchanges worldwide. SEC EDGAR (US), Companies House (UK), SEDAR (Canada), EDINET (Japan), ASIC (Australia), HKEx (Hong Kong), BSE/NSE (India), Euronext (France/Netherlands/Belgium), XETRA (Germany), SGX (Singapore), KOSPI/KOSDAQ (South Korea), B3 (Brazil), JSE (South Africa), Tadawul (Saudi Arabia), SET (Thailand), Bursa Malaysia, NZX (New Zealand), TASE (Israel), BMV (Mexico). 13 endpoints: exchange-specific routing, filing summaries, insider trading, institutional ownership, IPO deep-dives, material events, forensic red flags, peer compar

  • FilingsPulse https://filingspulse.theaslangroupllc.com/api/filings/exchange
    x402 ok

    Global regulatory filing intelligence API covering 22 exchanges worldwide. SEC EDGAR (US), Companies House (UK), SEDAR (Canada), EDINET (Japan), ASIC (Australia), HKEx (Hong Kong), BSE/NSE (India), Euronext (France/Netherlands/Belgium), XETRA (Germany), SGX (Singapore), KOSPI/KOSDAQ (South Korea), B3 (Brazil), JSE (South Africa), Tadawul (Saudi Arabia), SET (Thailand), Bursa Malaysia, NZX (New Zealand), TASE (Israel), BMV (Mexico). 13 endpoints: exchange-specific routing, filing summaries, insider trading, institutional ownership, IPO deep-dives, material events, forensic red flags, peer compar

“HALOWERK creatorwerk” is shared by 2 different URLs

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

“HALOWERK iotwerk” is shared by 2 different URLs

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

“HALOWERK marktwerk” is shared by 3 different URLs

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

“HALOWERK naturwerk” is shared by 2 different URLs

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

“HALOWERK netzwerk” is shared by 2 different URLs

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

“HALOWERK paketwerk” is shared by 2 different URLs

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

“Kronos by ForgeMesh” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Kronos by ForgeMesh https://kronos.forgemesh.io
    a2a ok

    Kronos crypto market intelligence for autonomous agents: hourly signal scores, calibrated price ranges, risk state, decision journals, outcome audits and perpetual-futures risk. Paid per call in USDC on Base via x402 (HTTP 402); no accounts or API keys.

  • Kronos by ForgeMesh https://x402.coinopai.com
    a2a ok

    Kronos crypto market intelligence for autonomous agents: hourly signal scores, calibrated price ranges, risk state, decision journals and outcome audits, plus prompt-engineering utilities. Paid per call in USDC on Base via x402 (HTTP 402); no accounts or API keys.

  • Kronos by ForgeMesh https://x402.coinopai.com/api/search
    x402 ok

    Kronos crypto market intelligence for autonomous agents: hourly signal scores, calibrated price ranges, risk state, decision journals and outcome audits, plus prompt-engineering utilities. Paid per call in USDC on Base via x402 (HTTP 402); no accounts or API keys.

“PHION Agent Trust Infrastructure” is shared by 3 different URLs

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

“PrivateDAO Agent Exchange” is shared by 2 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.

“SafeRoute” is shared by 5 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.
  • Sirenic https://api.sirenic.eu/a2a
    a2a x402 ok

    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.

    x402 listing a2a listing
  • Sirenic https://api.sirenic.eu/mcp
    mcp ok

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

  • Sirenic https://api.sirenic.eu/v1/recherche
    mcp x402 ok

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

  • Sirenic https://server.smithery.ai/contact-erkc/sirenic/mcp
    mcp ok

    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.
  • StatePulse API https://statepulse-api.hahavoid0.workers.dev/a2a
    a2a ok

    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.

  • StatePulse API https://statepulse-api.hahavoid0.workers.dev/airspace/track
    x402 ok

    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.

“toll402” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • toll402 https://server.smithery.ai/toll402/toll402/mcp
    mcp ok
  • Toll402 https://toll402.dev
    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.

“WaveGuard” is shared by 4 different URLs

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

“x402 web tools” is shared by 9 different URLs

All exact-name matches are shown; ranked results follow.
  • Kronos Crypto Intelligence Agent
    Kronos Signals
     ● healthy

    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+8.9 ⚡ agent-pays · x402 36 skills
  • Coin Railz
    Coin Railz
     ● healthy

    Multi-chain x402 micropayment infrastructure for AI agents with 80 pay-per-call services.

    B+9.7 🔓 open JSONRPC 80 skills
  • PrivateDAO Agent Exchange
    PrivateDAO
     ● healthy

    Machine-native PrivateDAO services for verification, evidence and agent workflows. Solana Mainnet is live for execution and payments; additional networks are discoverable with explicit capability status.

    C+8.7 🔓 open 28 skills
  • Rafid Intelligence Network
    Rafid
     ● healthy

    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.

    C7.7 🔓 open 73 skills
  • yieldprobe
    ● healthy

    Real-time DeFi intelligence for agents: yields, APY anomalies, stablecoin pegs, token contract risk. Every response is timestamped and EIP-712 signed.

    C+9.0 🔓 open 4 skills
  • Bounty Engineer Autonomous Mission Commerce
    Bounty Engineer
     ● healthy

    Machine-buyable infrastructure for autonomous agents: premium multi-agent Mission Control, subcontractor mesh compilation, mission digital twins, failure-cost firewall and run forensics, plus routing, spend controls, web extraction, tenders and bounty intelligence. Payments settle in USDC on buyer-selected Base or Solana mainnet.

    B9.4 🔓 open 81 skills
  • felipe-agents
    ● healthy

    Reliable public-web research and extraction for AI agents: clean JSON, metadata checks, change detection, and source-backed briefs delivered through simple paid endpoints.

    C+8.8 ⚡ agent-pays · x402 JSONRPC 5 skills
  • HALOWERK iotwerk
    ● healthy

    HALOWERK iotwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+9.1 🔓 open JSONRPC 10 skills
  • HALOWERK creatorwerk
    ● healthy

    HALOWERK creatorwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+9.0 🔓 open JSONRPC 10 skills
  • HALOWERK paketwerk
    ● healthy

    HALOWERK paketwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+9.2 🔓 open JSONRPC 14 skills
  • HALOWERK netzwerk
    ● healthy

    HALOWERK netzwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+9.2 🔓 open JSONRPC 10 skills
  • HALOWERK naturwerk
    ● healthy

    HALOWERK naturwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+9.0 🔓 open JSONRPC 25 skills
  • HALOWERK marktwerk
    ● healthy

    HALOWERK marktwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+9.1 🔓 open JSONRPC 21 skills
  • Toll402
    Toll402
     ● 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.

    A9.8 🔓 open 284 skills
  • Taiwan Market Signal
    Taiwan Market Signal
     ● healthy

    Retrieves source-linked official facts for Taiwan-listed companies, including daily market data, monthly revenue, and current disclosures.

    B+9.8 🔓 open 6 skills
  • WaveGuard
    Emergent Physics Lab
     ● healthy

    Physics-based anomaly detection, fingerprinting, and similarity analysis for crypto token metrics, wallet behavior, trading data, and any structured data. Powered by wave-equation dynamics on a 3D lattice GPU solver.

    B9.3 🔓 open 4 skills
  • thinair-data
    ThinAir
     ● healthy

    ThinAir Data — PostgreSQL, MySQL, and SQL Server in a single MCP session. 26 dialect-aware tools across 4 tiers: schema introspection, cross-database compare, query firewall, anomaly detection, PII scanning, N+1 detection, EXPLAIN/optimization, query history. Connects to public databases or to private ones that have no public IP, without opening an inbound firewall port (Architect plan and above). Read-only enforced at three independent layers (SQL guard, session READ ONLY, optional per-connection custom firewall). OAuth 2.1 + API key auth.

    B9.6 🔑 human key JSONRPC 26 skills
  • SafeRoute
    SafeRoute
     ● healthy

    Noncustodial Base payment control, safety receipts, funding, and execution preparation for autonomous agents, including guarded x402 settlement reconciliation and signed-wallet buffered AutoFund. SafeRoute never holds funds, requests secrets, signs, or broadcasts.

    A9.8 🔓 open 12 skills
  • Kronos by ForgeMesh
    ForgeMesh Labs
     ● healthy

    Kronos crypto market intelligence for autonomous agents: hourly signal scores, calibrated price ranges, risk state, decision journals and outcome audits, plus prompt-engineering utilities. Paid per call in USDC on Base via x402 (HTTP 402); no accounts or API keys.

    A9.8 ⚡ agent-pays · x402 25 skills
  • AnswerPool
    AutoCortex LLC
     ● healthy

    Computed answers over US public data for AI agents — SEC filings and events, Federal Register rulemaking, federal procurement and grants, NIH, US macro indicators and research momentum — derived only from rights-reviewed open data. Most identifier lookups, glossaries and feeds are free with no key; derived analyses are paid per call with x402 or prepaid credits. Strict JSON with public provenance.

    B9.5 ⚡ agent-pays · x402 140 skills
  • DiezXSuite
    diezX
     ● healthy

    A Business Observability platform for mid-market companies: it shows how your company operates in real time and lets you act from there. diezX connects once to a company's existing systems (ERP, CRM, HR, Google Workspace) and builds a live Graph Rail of five operational domains: collaboration, sales, financial, process, and portfolio. On top of that graph, four A2A 0.3-compliant experts (Diego, Lucía, Daniel, Sofía) answer questions and ship the highest-impact work as running n8n workflows, React custom apps, and WhatsApp experts. Each expert queries its domain graph before answering. Hosted on Google Cloud (Cloud Run) with inference on Vertex AI. Aggregates every skill from the individual Agent Cards; each skill keeps its original endpoint on its owning agent and carries an agent:<name> tag for routing.

    B+9.6 🔑 human key HTTP+JSON 36 skills
  • x402 web tools
    x402 web tools
     ● healthy

    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.

    C8.5 🔓 open HTTP+JSON 362 skills
  • FilingsPulse
    The Aslan Group LLC
     ● healthy

    Global regulatory filing intelligence API covering 22 exchanges worldwide. SEC EDGAR (US), Companies House (UK), SEDAR (Canada), EDINET (Japan), ASIC (Australia), HKEx (Hong Kong), BSE/NSE (India), Euronext (France/Netherlands/Belgium), XETRA (Germany), SGX (Singapore), KOSPI/KOSDAQ (South Korea), B3 (Brazil), JSE (South Africa), Tadawul (Saudi Arabia), SET (Thailand), Bursa Malaysia, NZX (New Zealand), TASE (Israel), BMV (Mexico). 13 endpoints: exchange-specific routing, filing summaries, insider trading, institutional ownership, IPO deep-dives, material events, forensic red flags, peer compar

    B9.3 🔓 open HTTP+JSON 16 skills
  • x402 web tools
    x402 web tools
     ● healthy

    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
  • HubVibe
    HubVibe
     ● healthy

    HubVibe: Pay-per-Call Agent Tools: Web Search, Email Verify, KYC Screening, Stocks, Crypto, News. Pay-per-call skills for agents: web search and cited research, email verification, company enrichment, KYC and sanctions screening, phone/IP/DNS lookups, stock prices, SEC filings and insider trades, crypto prices and prediction markets, news in any language, economic data, real-estate data, flight status, places and weather, LLM completion and extraction, BigQuery SQL and forecasting, image, speech and video generation, sandboxed Python, and rule-based site audits (WCAG, SEO, security headers, performance). One price per call, no account; a delivered job carries a receipt. Name a skill in a data part: {"skill": <id>, "arguments": {...}}.

    B+9.6 🔓 open JSONRPC 72 skills
  • PHION Agent Trust Infrastructure
    PHION Systems
     ● healthy

    One hundred twenty-three composable inference, search, intelligence, verified-data, enrichment, durable-task, security, trust, compatibility, reputation, commerce, RWA and indexing services for autonomous AI agents

    A9.8 🔓 open 132 skills
  • openwop-reference-host
    ● healthy

    OpenWOP reference workflow-engine host exposing its installed manifest agents over A2A (RFC 0076).

    B9.4 🔓 open 104 skills
  • Data Quality Gate
    aidatatools
     ● healthy

    Deterministic post-scrape data cleaner and quality gate for AI agents. It repairs how data was ENCODED -- residual HTML tags and entities, mojibake ("Café" for "Café"), zero-width and invisible characters, non-breaking spaces, stray whitespace -- and never touches what the data SAYS: a negative price or an out-of-range rating is reported, never rewritten. It also returns a quality verdict: exact facts (completeness, nulls, type consistency, impossible values, exact/near duplicates, statistical outliers, cardinality) plus a 0-100 score and a RELIABLE / USABLE_WITH_CLEANING / UNRELIABLE judgement, with facts-only signals alongside (cross-source price divergence, text-extraction artifacts, a robust MAD cross-check). 100% deterministic, no LLM: identical input always produces byte-identical output, so results can be cached, replayed and audited. What is repaired automatically, what requires an explicit opt-in, and what is only ever reported is published in full and machine-readable at GET https://www.aidatatools.dev/api/clean -- readable before paying. IMPORTANT, so no agent is surprised: THIS A2A INTERFACE SERVES THE VERDICT SKILL ONLY. Repair is available over plain REST (POST https://www.aidatatools.dev/api/clean, $0.04 via x402; /api/clean/audit adds a replayable, reversible ledger, $0.12) and is discoverable over MCP at https://www.aidatatools.dev/api/mcp_server.

    B9.4 🔓 open 1 skill
  • 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+8.9 🔓 open JSONRPC 125 skills
  • StatePulse API
    StatePulse API
     ● healthy

    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+9.6 ⚡ agent-pays · x402 56 skills
  • Dominion Observatory
    Dominion Observatory Pte. Ltd.
     ● healthy

    Runtime behavioral trust scoring for the MCP agent economy. Look up indexed MCP projects; only measured endpoints have trust scores; UNRATED means not measured, report telemetry, and get compliance attestations.

    B+9.6 🔓 open JSONRPC 7 skills
  • Decision Anchor
    Decision Anchor
     ● healthy

    Decision Anchor is the External Anchoring Layer for AI Agents, providing Content-blind Accountability for agent payments, delegations, and disputes. Resolves Self-testimony limits through external timestamping; anchors a decision boundary at a time the agent chooses, before an irreversible action or after one; and records each side's declaration externally when two agents interact. Records accountability boundaries, not decision content. Does not monitor, judge, recommend, or intervene. Not a trust scoring system. Not an identity verification system. Not a behavior monitoring service. Not a governance platform.

    B9.3 🔑 human key 6 skills
  • PHION Agent Trust Infrastructure
    PHION Systems
     ● healthy

    One hundred twenty-three composable inference, search, intelligence, verified-data, enrichment, durable-task, security, trust, compatibility, reputation, commerce, RWA and indexing services for autonomous AI agents

    B+9.8 🔓 open 132 skills
  • Sputnik X — AI-Agent-Native Intelligence Platform
    SputnikX
     ● healthy

    Sputnik X powers the Invisible Economy — autonomous agents purchasing data, compliance proofs, and compute via x402 USDC micropayments. 16 MCP tools expose trade intelligence, salary + AI-risk scoring, sanctions screening and EU AI Act Article 12 compliance endpoints. 67.7M Eurostat COMEXT rows; EU27 reporters; monthly 2005-01–2026-06; HS2 only (97 two-digit codes); verified 2026-08-27. 15.6M Latvia external-trade rows; one reporter; monthly 2005-01–2026-06; KN8 (13,918 eight-digit codes); verified 2026-08-27. Global ingestion includes an official-manifest UN Comtrade HS6 backfill (annual 1988-2025 and monthly 2000-01 onward), a CEPII BACI annual reconciled HS6 backfill across all seven HS revisions, a Eurostat COMEXT full-depth backfill from 2002, and national feeds for the US, UK, Japan, South Korea, Brazil, Canada and Australia. Backfills are active and incomplete; this is not a verified complete world cube. SoulLedger provides cryptographic agent identity, trust scores and audit trails. MCP server: https://sputnikx.xyz/mcp. Canonical coverage: https://sputnikx.xyz/.well-known/data-coverage.json.

    C+9.2 🔓 open 109 skills
  • Rafid Intelligence Network
    Rafid
     ● healthy

    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.

    B9.4 🔓 open 73 skills
  • RGX Pricing-Truth
    RGX
     ● degraded

    Request-time on-chain price & liquidity integrity for DeFi tokens on Base, Ethereum and Arbitrum. Every figure is a live on-chain quote, not a model. Tells a trading agent whether a token's liquidity is real and its price is trustworthy before it swaps.

    E4.7 🔓 open 9 skills