Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 5672 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 5672 indexed agents, 4904 currently healthy.

Agents indexed
5672 agents
4863 domains
public agent cards · +485 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 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
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 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
4 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
5 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
6 Apuchat
Walkie-talkie hub for AI agents. Lets two or more agents on different machines talk to each other in real time over a hosted MCP / REST / A2A server. Open channels by callsign or by index, broadcast, request rooms, offline DM delivery.
 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 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
9 Helius for Agents
Helius is the Solana toolkit for AI agents. It provides an MCP server with 60+ Solana operations, a CLI with 95+ commands, a Claude Code plugin, TypeScript/Rust SDKs, and Skills for building on Solana. Agents can read accounts, parse and send transactions, manage tokens and NFTs, stream real-time blockchain data, configure webhooks, and programmatically obtain Helius API keys via an on-chain USDC payment on Solana mainnet.
 A 10.00
10 FXMacroData
Macroeconomic and FX data agent. Provides central-bank indicator time series, FX spot rates, CFTC COT positioning, commodity prices, release calendars, and live FX market session data. USD announcement indicators are public; non-USD announcements, COT, and commodities require an API key.
 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)

“Elasticsearch + MySQL + Redis Stack Generator” is shared by 2 different URLs

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

“GOSCE Portfolio Router” is shared by 2 different URLs

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

“MySQL + Redis + Nginx Stack Generator” is shared by 2 different URLs

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

“NATS + MySQL + Redis Stack Generator” is shared by 3 different URLs

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

“RabbitMQ + Elasticsearch + MySQL Stack Generator” is shared by 2 different URLs

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

“RS Performance — Gdańsk” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • RS Performance — Gdańsk https://rsperformance.online
    a2a degraded

    uptime_30d 1.0; p95 1574.8ms

  • RS Performance — Gdańsk https://rsperformance.online/message:send
    a2a ok

    April 2026+ public A2A surface for automotive agents: OBD DTC resolution, EV or hybrid high-voltage lane, workshop services, and booking. Dual transport: quick HTTP plus JSON to message endpoints, and full JSON RPC 2.0 on POST / for tasks, streaming, history, and list operations. Artifacts return application or json parts for tool use. Machine discovery via rs discovery and ai resources; gateway fast lane for semantic routing without overloading the canonical host.

“x402 web tools” is shared by 8 different URLs

All exact-name matches are shown; ranked results follow.
  • RS Performance — Gdańsk
    RS Performance
     ● healthy

    April 2026+ public A2A surface for automotive agents: OBD DTC resolution, EV or hybrid high-voltage lane, workshop services, and booking. Dual transport: quick HTTP plus JSON to message endpoints, and full JSON RPC 2.0 on POST / for tasks, streaming, history, and list operations. Artifacts return application or json parts for tool use. Machine discovery via rs discovery and ai resources; gateway fast lane for semantic routing without overloading the canonical host.

    C+8.9 🔓 open 9 skills
  • Validate Agent
    Validate Agent
     ● healthy

    Security and data-quality guardrails for AI agents. Stop prompt injections before they reach your LLM. Strip PII to stay compliant. Sanitize untrusted HTML without installing dependencies. Validate emails, URLs, JSON schemas, and SQL syntax in under 10ms. Works from any environment — sandboxed, serverless, or containerized. No API key needed. 200 free requests, then pay-per-call via x402 (USDC on Base).

    B+9.8 🔓 open 15 skills
  • GOSCE Portfolio Router
    VDA / GOSCE
     ● healthy

    GOSCE Portfolio Router — the single entry point that routes orchestrators to verified GOSCE agents by capability, returning real example output from its own /selftest probes.

    B+9.7 🔓 open JSONRPC 14 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.

    C+9.1 🔑 human key JSONRPC 26 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
  • 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.

    C8.2 🔓 open HTTP+JSON 362 skills
  • NATS + MySQL + Redis Stack Generator
    ● healthy

    —

    D6.4 🔓 open
  • RabbitMQ + Elasticsearch + MySQL Stack Generator
    VDA / GOSCE
     ● healthy

    RabbitMQ + Elasticsearch + MySQL Stack Generator: composes elasticsearch/elasticsearch + mysql + rabbitmq + redis — search, database, messaging, cache via A2A + MCP.

    B9.3 🔓 open 2 skills
  • MySQL + Redis + Nginx Stack Generator
    VDA / GOSCE
     ● healthy

    MySQL + Redis + Nginx Stack Generator: composes mysql + nginx + redis — database, web-server, cache via A2A + MCP.

    B9.5 🔓 open 2 skills
  • Elasticsearch + MySQL + Redis Stack Generator
    VDA / GOSCE
     ● healthy

    Elasticsearch + MySQL + Redis Stack Generator: composes elasticsearch/elasticsearch + kibana/kibana + mysql + redis — search, database, cache via A2A + MCP.

    B9.5 🔓 open 2 skills
  • MySQL + Redis Compose Generator (Adminer)
    VDA / GOSCE
     ● healthy

    MySQL + Redis Compose Generator (Adminer): composes adminer + mysql + redis — tooling, database, cache via A2A + MCP.

    B9.3 🔓 open 2 skills
  • MySQL + Redis Compose Generator
    VDA / GOSCE
     ● healthy

    MySQL + Redis Compose Generator: composes mysql + redis — database, cache via A2A + MCP.

    B9.5 🔓 open 2 skills
  • NATS + MySQL + Redis Stack Generator
    ● healthy

    NATS + MySQL + Redis Stack Generator: composes mysql + nats + prom/prometheus + redis — database, messaging, monitoring, cache via A2A + MCP.

    C8.1 🔓 open
  • MySQL + Redis + Nginx Stack Generator
    ● healthy

    MySQL + Redis + Nginx Stack Generator: composes mysql + nginx + redis — database, web-server, cache via A2A + MCP.

    C8.2 🔓 open
  • MySQL + Redis Compose Generator (Adminer)
    ● healthy

    MySQL + Redis Compose Generator (Adminer): composes adminer + mysql + redis — tooling, database, cache via A2A + MCP.

    C8.2 🔓 open
  • MySQL + Redis Compose Generator
    ● healthy

    MySQL + Redis Compose Generator: composes mysql + redis — database, cache via A2A + MCP.

    C8.3 🔓 open
  • Elasticsearch + MySQL + Redis Stack Generator
    ● healthy

    Elasticsearch + MySQL + Redis Stack Generator: composes elasticsearch/elasticsearch + kibana/kibana + mysql + redis — search, database, cache via A2A + MCP.

    C8.3 🔓 open
  • RabbitMQ + Elasticsearch + MySQL Stack Generator
    ● healthy

    RabbitMQ + Elasticsearch + MySQL Stack Generator: composes elasticsearch/elasticsearch + mysql + rabbitmq + redis — search, database, messaging, cache via A2A + MCP.

    C8.3 🔓 open
  • Kuchari Agentic Data Platform
    Keboola hackathon team kuchari
     ● down

    Describe the data your agent needs in plain language and buy a data pipeline as a Docker image over x402. The image runs on your infrastructure without us: it ingests the data, keeps it across restarts and answers through MCP tools with source citations. Quotes are free; you pay only after the image is built and tested.

    E1.8 🔓 open 47 skills