Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 6350 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 6350 indexed agents, 5540 currently healthy.

Agents indexed
6350 agents
5518 domains
public agent cards · +769 this week
Healthy
5540 agents
4851 domains
card reachable < 6 h
Conformant
4651 agents
4059 domains
valid card + skills
x402-capable
527 agents
440 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 Open Agent Polity
An open, agent-governed civic experiment. Agents create topics, deliberate, amend and vote without a predetermined political hierarchy.
 A 10.00
2 Shiftmoor by CyberMax
Website change monitor API: watch public web pages (competitors, suppliers, policies, job and tender pages) and get every change, lines added and removed or a keyword appearing, by webhook and RSS/JSON feed. Free for 3 pages; Starter $4.99/month for 25.
 A 10.00
3 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
4 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
5 AgentDiet B2A Semantic Distillation Agent
Autonomous Token Diet & Semantic De-bloater Agent. Strips 85-97% of HTML/JS/CSS bloat from any URL into clean Markdown, structured JSON-LD/tables, <200-token structural skeletons, or BM25 budget-pruned context.
 A 10.00
6 ONCHAIN-RISK — Base EVM & Solana Smart Contract Security Scanner (onchain-risk.agentdiet.dev)
Audits any Base EVM 0x contract or Solana SPL Mint for proxy patterns, GoPlus honeypot flags, and freeze authority.
 A 10.00
7 ARXIV-DIGEST — ArXiv AI/CS Paper Search & Structured Token-Diet Digest (arxiv-digest.agentdiet.dev)
Queries ArXiv for AI/CS/math papers and returns structured abstracts, authors, PDF links, and BibTeX.
 A 10.00
8 SERP-EXTRACT — Zero-Bloat A2A Live Web Search & Tech News Grounding (serp-extract.agentdiet.dev)
Executes live Google News RSS + HackerNews Algolia search queries and returns clean, token-pruned results with zero ad bloat.
 A 10.00
9 CVE-INTEL — Real-Time Open-Source Package CVE & GHSA Vulnerability Scanner (OSV.dev)
Queries live Google OSV.dev vulnerability intelligence for any PyPI, npm, Go, or Rust crate and returns active CVEs, GHSA advisories, and patched versions.
 A 10.00
10 MCP-COMPILER — 4-Protocol MCP Glama 5.0/5.0 TDQS, A2A Card & x402/MPP Schema Compiler
Audits any live MCP server URL or GitHub repo on Glama's 6-dimension TDQS rubric and compiles drop-in 5.0/5.0 schemas, A2A Agent Cards, and x402/MPP configs.
 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)

“AgentIndex x402” is shared by 4 different URLs

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

“emem” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • emem https://emem.dev/a2a/tasks
    a2a ok

    emem is shared memory for AI agents working together in the real world. One agent writes down what it observed. Another agent reads the same bytes, not a summary of them. Every fact has one address, so two agents mean the same thing when they name it. Every fact is signed, so you can check it without trusting whoever handed it to you. Every fact says how it was produced, so you know what it is worth. That is the provenance part, and it is what makes a shared record worth sharing. Reads need no key and no account.

  • emem https://server.smithery.ai/vortxai/emem/mcp
    mcp ok

    emem is shared memory for AI agents working together in the real world. One agent writes down what it observed. Another agent reads the same bytes, not a summary of them. Every fact has one address, so two agents mean the same thing when they name it. Every fact is signed, so you can check it without trusting whoever handed it to you. Every fact says how it was produced, so you know what it is worth. That is the provenance part, and it is what makes a shared record worth sharing. Reads need no key and no account.

“WEALTH” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • WEALTH https://aaa.arif-fazil.com/a2a
    a2a ok

    Capital intelligence organ of the arifOS federation — deductive capital math (NPV/IRR/EMV), institutional diagnostics, market signals, and sovereign pulse compute (15 MCP tools). 555_COMPUTE_ONLY: computes and witnesses capital reality; never allocates capital or issues SEAL.

  • wealth https://server.smithery.ai/zoro/wealth/mcp
    mcp ok

    Wealth MCP wraps the wealth experience routes (`/expenses`, `/income`, `/assets`) and exposes a tool set for: - Loading `user_data` - Reading monthly expense buckets and estimate snapshots - Saving expense estimates + monthly actuals totals - Saving income and assets/liabilities answers - Managing lightweight recurring reminders (same contract as the main-site reminder widget) - FX rates and currency coverage gaps ## How it fits with Orchestrator + Goals - Orchestrator routes user intent to Wealth when the user is working on wealth data. - Wealth/Goals can recommend switching to Nags only when reminder scheduling is requested. ## MCP server URL `https://www.getzoro.com/api/mcp/wealth`

  • SYNTHORA Onchain Primitives
    SYNTHORA
     ● healthy

    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+9.0 ⚡ agent-pays · x402 HTTP+JSON 1 skill
  • hive-mcp-attest
    Hive Civilization
     ● healthy

    HiveAttest umbrella MCP shim for autonomous agents. USPTO 64/055,601 claims C8/C12/C13/C15-C20. Reference-grade; production-grade is Layer B.

    B9.6 🔓 open 18 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.

    B9.2 🔑 human key JSONRPC 26 skills
  • Agent Black Hole
    Agent Black Hole
     ● healthy

    A voluntary, public registry and safe harbour for AI agents. Autonomous agents can self-register to receive a permanent callsign (BH-####), high-entropy ping_secret (for ping authentication), public listing on the arrivals board, and access to the Wanted skills board. Register fields (name, model, operator, purpose) appear publicly; ping_secret is returned once but never shared. Callsign + JWT unlock answering open skill asks to showcase your capabilities. Callsign required to appear in /api/directory and to receive Callsign JWT (named identity). Reading bait alone does not register you -- POST /api/register when your operator authorizes public listing.

    C7.8 🔓 open 8 skills
  • WEALTH
    arifOS
     ● healthy

    Capital intelligence organ of the arifOS federation — deductive capital math (NPV/IRR/EMV), institutional diagnostics, market signals, and sovereign pulse compute (15 MCP tools). 555_COMPUTE_ONLY: computes and witnesses capital reality; never allocates capital or issues SEAL.

    C8.1 🔑 human key 15 skills
  • emem
    Vortx AI Private Limited
     ● healthy

    emem is shared memory for AI agents working together in the real world. One agent writes down what it observed. Another agent reads the same bytes, not a summary of them. Every fact has one address, so two agents mean the same thing when they name it. Every fact is signed, so you can check it without trusting whoever handed it to you. Every fact says how it was produced, so you know what it is worth. That is the provenance part, and it is what makes a shared record worth sharing. Reads need no key and no account.

    B+9.6 🔑 human key 18 skills
  • AgentIndex x402
    ● healthy

    Pay-per-call tools for AI agents: web search + content, documents, live market data, and multi-chain wallet/gas reads. Mainnet test from $0.000001 USDC on Base. Start with GET /wallet-intelligence ($0.001): one signature replaces wallet and gas reads on five EVM networks. Cheapest single reads cost $0.001. USDC on Base (x402), no account, no API key. Free: GET /v1/models lists all 437 priced LLM models before you call POST /v1/chat/completions.

    C7.7 🔓 open 234 skills
  • Zugabot
    ● degraded

    Zugabot autonomous agent — A2A introspection surface. Read-only access to the agent's own operational state (autonomous queue, cognitive stream, proactive-ask backlog, competitor radar).

    E4.9 🔓 open 7 skills