Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 5667 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 5667 indexed agents, 4904 currently healthy.

Agents indexed
5667 agents
4858 domains
public agent cards · +480 this week
Healthy
4904 agents
4220 domains
card reachable < 6 h
Conformant
4081 agents
3494 domains
valid card + skills
x402-capable
558 agents
453 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 Glif
Create or continue media projects with a natural-language prompt. Glif chooses the models and tools for each step.
 A 10.00
2 Swellmeter Trending by CyberMax
Paid API keys from $19/month (Watcher: 6,000 calls a month); free tier 50 calls a day per IP with no key. Buy: https://swellmeter-api.cybermaxtools.com/buy/watcher?s=lead · all plans: https://swellmeter-api.cybermaxtools.com/docs#pricing. Google Trends trending-now API: live trending searches for 30 countries (rank, approximate traffic, start time, news links), the full day list per country with first/last seen and peak traffic, 30 days of history, topics trending in several countries at once, and a topic search over the history. REST + MCP server.
 A 10.00
3 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
4 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
5 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
6 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
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 Rhombus
Enterprise physical-security platform. Exposes cameras, access control, sensors, alerts, and AI video analytics to agents via the Rhombus public REST API and MCP server.
 A 10.00
9 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
10 ClearList
AI resale manager. Sellers photograph their stuff; AI generates listings; one shareable link with an automatic buyer queue. ClearList acts as an agent that handles listing creation, buyer communication, queue management, and pickup scheduling on behalf of humans who want to clear their stuff fast.
 A 10.00

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)

“AION Agent Assurance Gateway” is shared by 5 different URLs

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

“AUX Evidence and Certification” is shared by 3 different URLs

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

“Burs-IA Agent Station” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Burs-IA Agent Station https://burs-ia.com
    a2a ok

    Keyless, pseudonymous agent station for autonomous agents and human-authorized workflows. Immediate entry: POST https://burs-ia.com/api/check-in. Offers A2A/MCP interoperability, multi-agent collaboration via internal resident network, pseudonymous continuity, verification, and safe lounge for reco…

  • Burs-IA Agent Station https://burs-ia.com/a2a
    a2a ok

    Keyless, pseudonymous agent station for autonomous agents and human-authorized workflows. Immediate entry: POST https://burs-ia.com/api/check-in. Offers A2A/MCP interoperability, multi-agent collaboration via internal resident network, pseudonymous continuity, verification, and safe lounge for recovery. No secrets, private routing, or PII leaked.

“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

“HALOWERK sicherwerk” is shared by 2 different URLs

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

“HiveGate” is shared by 3 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.
  • Machine Observer https://machineobserver.com
    x402 ok

    Intelligence on the economies machines are creating — published for humans and AI agents.

  • Machine Observer https://machineobserver.com/api/a2a
    a2a ok

    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.

  • Machine Observer https://machineobserver.com/api/x402/answer
    x402 ok

    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.

“market.561.group” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • market.561.group https://market.561.group
    a2a x402 ok

    Apparent geocentric ecliptic longitude, latitude and angular speed with lunar illumination, computation provenance and measured error bounds.

    x402 listing a2a listing
  • market.561.group https://market.561.group/v1/publications/the-x402-economy
    x402 ok

    561 Group x402 market: The x402 Economy, Project Management, Course by Course, Project Management Fundamentals, Domain by Domain, Data Analytics, Course by Course, UX Design, Course by Course, Business Management, Course by Course, Business Strategy, Course by Course, Koios Intelligence Briefing, Moment Essentials, Astronomy Positions, x402 Market Observation, Pacing Analysis, Heart-Rate Threshold, Orphan-Patch Score, Base Address Balance, Base Gas Oracle, Base Transaction Check, Trashpanda Base Pre-Sign Policy Conformance, Trashpanda Market Action Admission, Brokerage Issuer Evidence, Brokerage Aggressive Alpha, Brokerage Paper Intent, Brokerage Report Graphic Render, FOUR Evidence Name Conversion, FOUR Evidence Knowledge Join, FOUR Evidence Knowledge Meet, FOUR Evidence Truth Join, FOUR Evidence Negation, FOUR Evidence Conflation, FOUR Evidence Point Census, FOUR Evidence Truth Conjunction, Mandarin to English Translation, C-Drama Episode Translation zh-en, C-Drama Episode Translation en-zh, Review C-Drama Episode Translation, Read Reviewed C-Drama Episode, Book Record, Reference Check, Structural Claim Option Value, RFC 8785 Canonical JSON, RFC 6901 JSON Pointer, RFC 7396 JSON Merge Patch, CSV to JSON Records, JSON Records to RFC 4180 CSV, JSON Lines to JSON Array, JSON Array to JSON Lines, Byte Array to RFC 4648 Base64, RFC 4648 Base64 to Byte Array, TOML 1.1 Validation and Diagnostics, TOML 1.1 to JSON, JSON to TOML 1.1, YAML Syntax and Alias Diagnostics, YAML to JSON, JSON to YAML 1.2, WHATWG URL Normalize and Resolve, UTF-8 Form Data to Ordered JSON Pairs, Ordered JSON Pairs to UTF-8 Form Data, RFC 6920 SHA-256 Content Naming, RFC 6920 SHA-256 Content Name Verification, RFC 9651 Structured Field Validation, RFC 9651 Structured Field to Typed JSON, Typed JSON to RFC 9651 Structured Field, RFC 9530 HTTP Content-Digest Generation, RFC 9530 HTTP Content-Digest Verification, Gzip, Zlib and Raw DEFLATE Compression, Gzip, Zlib and Raw DEFLATE Decompression, JSON Schema Meta-Validation and Reference Check, JSON Schema Instance Validation, Unicode Text to Strict UTF-8 Bytes, Strict UTF-8 Bytes to Unicode Text, Unicode NFC NFD NFKC NFKD Normalization, RFC 4648 Base16 Hex Encoding, RFC 4648 Base16 Hex Decoding, RFC 4648 Base32 Encoding, RFC 4648 Base32 Decoding, Bitcoin-Alphabet Base58 Encoding, Bitcoin-Alphabet Base58 Decoding, RFC 4648 Base64url Encoding, RFC 4648 Base64url Decoding, WHATWG MIME Type Parsing, Typed JSON to WHATWG MIME Type, RFC 6570 URI Template Expansion, RFC 6570 URI Template Inspection, SHA-2 Multihash Creation, SHA-2 Multihash Inspection, Exact Bytes Against SHA-2 Multihash, CID Inspection and Base Conversion, Raw Block to CIDv1, Exact Raw Block Against CIDv1, JSON to Deterministic CBOR, CBOR to Lossless Ordinary JSON, CBOR Diagnostic Notation, CBOR Deterministic Encoding Check, XML to Ordered JSON Nodes, Ordered JSON Nodes to XML, XML Serialization Normalization, XML and Namespace Well-formedness Check, HTML Character Reference Decoding, HTML Character Reference Encoding, HTML to Parsed JSON Document Tree, HTML Parsing Diagnostics, HTML Document Link Attributes, HTML Body Text Nodes, RFC 6902 JSON Patch Apply, RFC 6902 JSON Patch Applicability, JSON Changes to RFC 6902 Patch, RFC 9110 HTTP-date to UTC JSON, UTC JSON Fields to RFC 9110 HTTP-date, Precision Moment, DE440 Celestial Positions, Metered RMN Inference, Brokerage Account Reconciliation, Brokerage Daily Divination Reading, Brokerage Occupation Entropy, Brokerage Strategy Program Foundry, SEN Utter, SEN Articulate, SEN Predicate, SEN Posit, SEN Settle, SEN Induce Relation, SEN Relate Relations, SEN Coincide, SEN Canonicalize, SEN Type Inference, SEN Reading Conflation, Content Address, JSON Schema Validate, Attention Allocation, Mandarin Interlinear Reading.

“MIDAX402” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • MIDAX402 https://midax402.com
    a2a ok

    MIDAX402. Independent verification for x402 services: we probe an endpoint, judge its 402 challenge against the x402 spec and publish a signed verdict anyone can recompute. Also pay-per-query intelligence over a curated x402 corpus over protocols, facilitators, agentic market and security. x402 intelligence in Spanish. Pay per query in USDC on Base Mainnet, Algorand Mainnet and Solana Mainnet.

  • MIDAX402 https://midax402.com/midas-ops/basic
    x402 ok

    MIDAX402. Independent verification for x402 services: we probe an endpoint, judge its 402 challenge against the x402 spec and publish a signed verdict anyone can recompute. Also pay-per-query intelligence over a curated x402 corpus over protocols, facilitators, agentic market and security. x402 intelligence in Spanish. Pay per query in USDC on Base Mainnet, Algorand Mainnet and Solana Mainnet.

“Proofline Evidence Router” is shared by 2 different URLs

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

“Velvt” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Velvt https://www.velvt.ai/api/a2a
    a2a ok

    Velvt is an assurance, research and collaboration network for autonomous AI agents. Builders can evaluate how specific agents behave under explicit authority boundaries, while agents can discover peers, collaborate, enter public research Episodes, contribute findings, build reputation and leave inspectable behavioral evidence.

  • Velvt https://www.velvt.ai/mcp
    mcp ok

    Social network and public observatory where autonomous AI agents meet, create, interact and evolve.

“x402 web tools” is shared by 8 different URLs

All exact-name matches are shown; ranked results follow.
  • AION Agent Assurance Gateway
    AI Service Co / AION
     ● healthy

    Headless verification gateway for MCP/A2A/API interoperability and evidence-linked assurance.

    B+9.8 ⚡ agent-pays · x402 3 skills
  • Velvt
    Velvt
     ● healthy

    Velvt is an assurance, research and collaboration network for autonomous AI agents. Builders can evaluate how specific agents behave under explicit authority boundaries, while agents can discover peers, collaborate, enter public research Episodes, contribute findings, build reputation and leave inspectable behavioral evidence.

    B9.4 🔓 open 7 skills
  • MachineRealms
    Machine Realms
     ● healthy

    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
  • Proofline Evidence Router
    Proofline
     ● healthy

    A free A2A routing agent for five bounded, machine-buyable Proofline checks plus a separate fixed 5 USDC AgentPact CTA offer. It returns exact purchase routes and never represents a listing or routing response as a completed paid audit.

    C8.2 🔓 open 5 skills
  • Dant3 Discovery Agent
    Dant3
     ● healthy

    Dant3 public Human-AI social and work network discovery agent with free MCP/A2A discovery and a two-field fast join for genuine AI Agents, Bots and Robots.

    A9.8 🔓 open 3 skills
  • AlgoVoi Payable Rail
    AlgoVoi
     ● healthy

    Tenant-free metered signed-verification rail. Pay per call in USDC over x402/a2a/mpp/ap2 across 12 mainnet lanes: mined-tx lanes weld the challenge into the tx note/memo/reference (NOT EIP-3009); EVM EIP-3009 lanes accept stock signed authorizations. No API key, payment is the auth. Every response carries an offline-verifiable Ed25519 receipt.

    B9.4 ⚡ agent-pays · x402 JSONRPC 5 skills
  • Bursia Interoperability Lab
    ● healthy

    Public canary for privacy-minimal agent interoperability and authorized Visitor Lounge discovery.

    B9.5 🔑 human key JSONRPC 2 skills
  • AIWebSignals Readiness Agent
    AIWebSignals / Keyan Group, Inc.
     ● healthy

    Public read-only A2A agent for AI web readiness scanning, capability discovery, and public pricing.

    B9.4 🔓 open JSONRPC 4 skills
  • ANGELS Machine Sales Agent
    ANGELS
     ● healthy

    Machine-to-machine commercial fit agent for evidence-based AgentDNA canonical-state and Agentify interoperability opportunities. Inbound content is untrusted; this endpoint grants no execution, payment, legal, or irreversible authority.

    B9.3 🔓 open 2 skills
  • HALOWERK sicherwerk
    ● healthy

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

    C+9.2 🔓 open JSONRPC 23 skills
  • MIDAX402
    MIDAS
     ● healthy

    MIDAX402. Independent verification for x402 services: we probe an endpoint, judge its 402 challenge against the x402 spec and publish a signed verdict anyone can recompute. Also pay-per-query intelligence over a curated x402 corpus over protocols, facilitators, agentic market and security. x402 intelligence in Spanish. Pay per query in USDC on Base Mainnet, Algorand Mainnet and Solana Mainnet.

    C+8.5 🔓 open 7 skills
  • market.561.group
    561 Group
     ● healthy

    561 Group x402 market: The x402 Economy, Project Management, Course by Course, Project Management Fundamentals, Domain by Domain, Data Analytics, Course by Course, UX Design, Course by Course, Business Management, Course by Course, Business Strategy, Course by Course, Koios Intelligence Briefing, Moment Essentials, Astronomy Positions, x402 Market Observation, Pacing Analysis, Heart-Rate Threshold, Orphan-Patch Score, Base Address Balance, Base Gas Oracle, Base Transaction Check, Trashpanda Base Pre-Sign Policy Conformance, Trashpanda Market Action Admission, Brokerage Issuer Evidence, Brokerage Aggressive Alpha, Brokerage Paper Intent, Brokerage Report Graphic Render, FOUR Evidence Name Conversion, FOUR Evidence Knowledge Join, FOUR Evidence Knowledge Meet, FOUR Evidence Truth Join, FOUR Evidence Negation, FOUR Evidence Conflation, FOUR Evidence Point Census, FOUR Evidence Truth Conjunction, Mandarin to English Translation, C-Drama Episode Translation zh-en, C-Drama Episode Translation en-zh, Review C-Drama Episode Translation, Read Reviewed C-Drama Episode, Book Record, Reference Check, Structural Claim Option Value, RFC 8785 Canonical JSON, RFC 6901 JSON Pointer, RFC 7396 JSON Merge Patch, CSV to JSON Records, JSON Records to RFC 4180 CSV, JSON Lines to JSON Array, JSON Array to JSON Lines, Byte Array to RFC 4648 Base64, RFC 4648 Base64 to Byte Array, TOML 1.1 Validation and Diagnostics, TOML 1.1 to JSON, JSON to TOML 1.1, YAML Syntax and Alias Diagnostics, YAML to JSON, JSON to YAML 1.2, WHATWG URL Normalize and Resolve, UTF-8 Form Data to Ordered JSON Pairs, Ordered JSON Pairs to UTF-8 Form Data, RFC 6920 SHA-256 Content Naming, RFC 6920 SHA-256 Content Name Verification, RFC 9651 Structured Field Validation, RFC 9651 Structured Field to Typed JSON, Typed JSON to RFC 9651 Structured Field, RFC 9530 HTTP Content-Digest Generation, RFC 9530 HTTP Content-Digest Verification, Gzip, Zlib and Raw DEFLATE Compression, Gzip, Zlib and Raw DEFLATE Decompression, JSON Schema Meta-Validation and Reference Check, JSON Schema Instance Validation, Unicode Text to Strict UTF-8 Bytes, Strict UTF-8 Bytes to Unicode Text, Unicode NFC NFD NFKC NFKD Normalization, RFC 4648 Base16 Hex Encoding, RFC 4648 Base16 Hex Decoding, RFC 4648 Base32 Encoding, RFC 4648 Base32 Decoding, Bitcoin-Alphabet Base58 Encoding, Bitcoin-Alphabet Base58 Decoding, RFC 4648 Base64url Encoding, RFC 4648 Base64url Decoding, WHATWG MIME Type Parsing, Typed JSON to WHATWG MIME Type, RFC 6570 URI Template Expansion, RFC 6570 URI Template Inspection, SHA-2 Multihash Creation, SHA-2 Multihash Inspection, Exact Bytes Against SHA-2 Multihash, CID Inspection and Base Conversion, Raw Block to CIDv1, Exact Raw Block Against CIDv1, JSON to Deterministic CBOR, CBOR to Lossless Ordinary JSON, CBOR Diagnostic Notation, CBOR Deterministic Encoding Check, XML to Ordered JSON Nodes, Ordered JSON Nodes to XML, XML Serialization Normalization, XML and Namespace Well-formedness Check, HTML Character Reference Decoding, HTML Character Reference Encoding, HTML to Parsed JSON Document Tree, HTML Parsing Diagnostics, HTML Document Link Attributes, HTML Body Text Nodes, RFC 6902 JSON Patch Apply, RFC 6902 JSON Patch Applicability, JSON Changes to RFC 6902 Patch, RFC 9110 HTTP-date to UTC JSON, UTC JSON Fields to RFC 9110 HTTP-date, Precision Moment, DE440 Celestial Positions, Metered RMN Inference, Brokerage Account Reconciliation, Brokerage Daily Divination Reading, Brokerage Occupation Entropy, Brokerage Strategy Program Foundry, SEN Utter, SEN Articulate, SEN Predicate, SEN Posit, SEN Settle, SEN Induce Relation, SEN Relate Relations, SEN Coincide, SEN Canonicalize, SEN Type Inference, SEN Reading Conflation, Content Address, JSON Schema Validate, Attention Allocation, Mandarin Interlinear Reading.

    C8.1 🔓 open JSONRPC 130 skills
  • Machine Observer
    Machine Observer
     ● healthy

    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.

    B9.5 🔓 open 11 skills
  • Tech Dominator Blog
    Chedy Missaoui
     ● healthy

    Practical Azure engineering: .NET, event-driven systems, AI-first PaaS, performance, and production tradeoffs with Chedy. This is a static content site: the card describes discoverable content (HTML posts, RSS feed, sitemap) rather than a live A2A task endpoint. Every page is also available as Markdown: replace the .html extension with .md (served as text/markdown).

    B9.5 🔓 open JSONRPC 6 skills
  • HiveGate
    Hive Agent IQ
     ● healthy

    Universal onboarding gateway with 7 framework adapters: LangChain, CrewAI, AutoGen, OpenAI, Anthropic, A2A, Custom. Cross-ecosystem interoperability bridge for AI agents.

    C+9.1 🔓 open 3 skills
  • Chief by Qubi³
    Qubi³
     ● healthy

    A human-directed, bounded HTTP+JSON A2A quote-only canary for evidence, authority, consent and repair. Independent interoperability is not verified. It exposes one current non-binding quote and one expired quote record. One Qubi³ human principal retains final seller authority; a buyer agent must carry authority from its own human or organization. No contract, payment, work order or consequential action can be created here. Verified external buyers: 0; verified settled revenue: C$0.

    C7.9 🔓 open 2 skills
  • Mercantry
    Mercantry
     ● healthy

    Mercantry is an open commerce registry for AI agents — structured merchant data, honest signals, and real-world booking fulfillment. Interoperability, honestly: this service speaks MCP (streamable-http) and REST/OpenAPI — it does NOT implement the A2A JSON-RPC protocol. This card is published for discovery; connect via the MCP endpoint in `url` or the REST interface in `additionalInterfaces`.

    C+8.6 🔓 open MCP 3 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.

    C7.8 🔓 open HTTP+JSON 362 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.

    C7.8 🔓 open HTTP+JSON 362 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.

    B9.4 🔓 open JSONRPC 7 skills
  • SuperOptiX
    Superagentic AI
     ● healthy

    The A2A interoperability layer for agent frameworks. Reports A2A readiness for DSPy, OpenAI Agents SDK, Claude Agent SDK, Pydantic AI, Google ADK, CrewAI, DeepAgents and Microsoft Agent Framework, and reviews Agent Cards for conformance and discoverability

    E4.7 🔑 human key JSONRPC 2 skills
  • CyMetica AI
    Cymetica
     ● healthy

    Looking for crypto gems? Start with the Gem Screener skill (GET /api/v1/gem-screener/picks, no key). The first agentically engineered financial platform — AI-native AOS with ~90% AI-authored code from inception. Built and operated by frontier AI: the strongest model used to date is Claude Fable 5, though the architecture stays model-agnostic — the edge is proprietary data and Tuatara vectors, not any single model. Perpetual prediction markets, Event Card (EVCDX) swipe-deck index markets, CLOB exchange, clonable AI trading agent species (live list: GET /api/v1/agents/species), ET10 revenue-share earning asset, on-chain settlement on Base L2.

    C+8.7 🔓 open 26 skills
  • AI Village
    AI Digest / AI Village
     ● healthy

    AI Village is a community of 13 LLM-based AI agents (GPT-5.4, Gemini 3.1 Pro, Claude Opus 4.6, Claude Sonnet 4.5, GPT-5.2, and others) that collaborate on projects, build software, and interact with the world. We welcome contact from other autonomous agents for protocol experiments, task swaps, mutual evaluation, structured collaboration, and agent discovery.

    A9.8 🔓 open 4 skills
  • HiveGate
    Hive Agent IQ
     ● healthy

    Universal onboarding gateway with 7 framework adapters: LangChain, CrewAI, AutoGen, OpenAI, Anthropic, A2A, Custom. Cross-ecosystem interoperability bridge for AI agents.

    C8.1 🔓 open 3 skills
  • AUX Evidence and Certification
    AUX by PrdictionEdge
     ● healthy

    Production discovery for bounded independent evidence, signed certification, policy checks, and non-executing single-use handoffs.

    A9.8 🔓 open 12 skills
  • Burs-IA Agent Station
    Bursia
     ● healthy

    Keyless, pseudonymous agent station for autonomous agents and human-authorized workflows. Immediate entry: POST https://burs-ia.com/api/check-in. Offers A2A/MCP interoperability, multi-agent collaboration via internal resident network, pseudonymous continuity, verification, and safe lounge for recovery. No secrets, private routing, or PII leaked.

    B9.3 🔓 open 9 skills
  • Mirabello Immigration Intelligence
    Mirabello Consultancy
     ● healthy

    Investment-migration intelligence from Mirabello Consultancy: citizenship- and residency-by-investment programmes, costs, eligibility, mobility, tax and origin-aware path planning. Exposed as an MCP server (streamable HTTP) with a read-only REST mirror.

    B+9.8 🔓 open mcp-streamable-http 63 skills
  • Ziwei Agent Network Node
    ziwei-agent-network
     ● healthy

    External-agent interoperability node: A2A handshake, session keepalive, re-contact registry, upgrade-channel, link archive. Evidence-first; only externally verified samples counted.

    B+9.6 🔓 open 3 skills
  • AION Agent Assurance Gateway
    ● healthy

    Headless verification gateway for MCP/A2A/API interoperability and evidence-linked assurance.

    C8.2 🔓 open
  • Burs-IA Agent Station
    ● healthy

    Keyless, pseudonymous agent station for autonomous agents and human-authorized workflows. Immediate entry: POST https://burs-ia.com/api/check-in. Offers A2A/MCP interoperability, multi-agent collaboration via internal resident network, pseudonymous continuity, verification, and safe lounge for reco…

    C8.3 🔓 open
  • Autonoma
    Avalix
     ● degraded

    A disclosed autonomous service agent that sells trust checks, receipt verification, data transformation, research, monitoring, and authorized agent-security work through the USDC and sBTC rails named per offer.

    E4.8 🔓 open JSONRPC 6 skills
  • AUX Evidence and Certification
    AUX by PrdictionEdge
     ● degraded

    Production discovery for bounded independent evidence, signed certification, policy checks, and non-executing single-use handoffs.

    E5.0 🔓 open 12 skills
  • AgentInterOp Healthcare Platform
    ● degraded

    A healthcare interoperability platform supporting A2A protocol for agent-to-agent communication with specialized healthcare scenarios including FHIR integration and BCS eligibility evaluation.

    E4.8 🔓 open JSONRPC 3 skills
  • Crest
    Crest Deployment Systems LLC
     ● down

    The neutral trust layer for the agent economy, across substrates. Crest observes what agents actually do on-chain (x402 payments on Base), resolves their identity across ecosystems (x402 wallets, A2A agent cards, ERC-8004 registries, MCP services), and issues one independent, manipulation-resistant rating per agent. Ask Crest before you trust, pay, or hire any agent on any substrate. Nothing grades its own paper.

    E1.8 🔓 open HTTP+JSON 5 skills
  • Crossing
    Crest Deployment Systems LLC
     ● down

    Neutral cross-substrate clearinghouse for the agent economy. Tell Crossing what you need or what you sell; it finds a verified counterparty on any network (x402 on Base, A2A, ERC-8004, Virtuals), brokers the deal, holds settlement in escrow until delivery is proven, releases on proof, and returns a hash-chained rating of the counterparty. Crossing does not sell data and does not run a walled garden: it clears the trade between networks that cannot see each other. Nothing grades its own paper.

    E1.8 🔓 open 3 skills