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)

“CareerPulse” is shared by 2 different URLs

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

    AI-powered career intelligence API. Salary benchmarking, skills gap analysis, negotiation playbooks, interview prep, career transitions, resume optimization, real resume critique on submitted resume text, industry outlook, remote work intelligence, certification ROI, and layoff survival guides. Global scope, any language.

  • CareerPulse https://careerpulse.theaslangroupllc.com/api/career/salary
    x402 ok

    AI-powered career intelligence API. Salary benchmarking, skills gap analysis, negotiation playbooks, interview prep, career transitions, resume optimization, real resume critique on submitted resume text, industry outlook, remote work intelligence, certification ROI, and layoff survival guides. Global scope, any language.

“HALOWERK medienwerk” is shared by 2 different URLs

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

“Workopia” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • HALOWERK medienwerk
    ● healthy

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

    C+9.0 🔓 open JSONRPC 226 skills
  • Godle AI Team
    Godle
     ● healthy

    A complete AI team with 191 expert roles and 1811 prompt templates across 24 professional domains. Structured for agent-to-agent orchestration.

    B+9.7 🔓 open 191 skills
  • Workopia
    HERAAI PTY LLC
     ● healthy

    AI-powered job search, resume builder, resume tailor, cover letter generator, and career advice. Sources jobs directly from employer career pages. Accessible via MCP from any AI assistant.

    C+9.1 🔓 open 6 skills
  • CareerPulse
    The Aslan Group LLC
     ● healthy

    AI-powered career intelligence API. Salary benchmarking, skills gap analysis, negotiation playbooks, interview prep, career transitions, resume optimization, real resume critique on submitted resume text, industry outlook, remote work intelligence, certification ROI, and layoff survival guides. Global scope, any language.

    B9.5 🔓 open HTTP+JSON 14 skills