Agents that publish an A2A /.well-known/agent-card.json — 5752 discovered and health-probed.
Add your agentDiscovered 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 5752 indexed agents, 4819 currently healthy.
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.
“Crawler Log Triage — AI Crawler Index” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Paste access-log lines and get back who crawled you. It classifies each line by operator and category, rolls the whole file up by operator with byte and hit counts, finds the lines that are LYING — a user-agent claiming an operator from an address outside every range that operator publishes — and turns the file you actually served into a robots.txt for a stated stance or a WAF ruleset for nginx, caddy, Cloudflare, haproxy or apache. Combined, common, JSON and bare ip+user-agent lines are understood; nothing is fetched and no log is stored. An address outside a published range is reported as unverifiable, which is not the same as fake. Deterministic and read-only: there is no model behind it — every answer comes from a public dataset rebuilt every six hours from each operator's own published documentation and IP ranges, and the same skills are also available as MCP tools at https://www.pathwren.workers.dev/mcp/triage. No key, no signup, no quota. Independent and unaffiliated with any operator it documents.
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Crawler Log Triage — AI Crawler Index https://www.pathwren.workers.dev/c/ard/a2a/triage/.well-known/agent-card.jsona2a x402 ok
A2A v1.0 agent that turns pasted access-log lines into who crawled you: every line classified by operator and category, a rollup with hits and bytes per operator, the lines whose user-agent claims an operator from an address outside every range that operator publishes, and — from the file you actua…
“deadends.dev” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
Structured error knowledge database for AI coding agents. 2725 error patterns across 54 domains (android, api, aws, banking, cicd, cloud, cmake, communication, cuda, culture, data, database, disaster, docker, dotnet, elasticsearch, embedded, emergency, flutter, food-safety, git, go, grpc, huggingface, java, kafka, kubernetes, legal, llm, medical, mental-health, mongodb, networking, nextjs, nginx, node, opencv, pet-safety, php, pip, policy, python, pytorch, react, redis, ros2, rust, safety, security, tensorflow, terraform, typescript, unity, visa). Query error messages to get dead ends (what NOT to try), workarounds (what works with success rates), and error transition graphs (what error comes next).
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mcp degraded
Structured failure knowledge for AI agents — dead ends, workarounds, error chains
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Error knowledge database for AI coding agents. 2002 verified error patterns across 43 domains. Returns dead ends (what NOT to try) and workarounds (what works) for any error message. Covers Python, Node, Docker, CUDA, Kubernetes, ROS 2, PyTorch, and 36 more domains.
“GOSCE Portfolio Router” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
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.
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Single entry point for the GOSCE portfolio: routes orchestrators to verified agents by capability, with real example output from the router's own /selftest probes (a quality-assured broker, not a directory). Ideal for discovering GOSCE agents by capability, routing orchestrators to verified endpoints, capability brokering.
“MySQL + Redis + Nginx Stack Generator” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
MySQL + Redis + Nginx Stack Generator: composes mysql + nginx + redis — database, web-server, cache via A2A + MCP.
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MySQL + Redis + Nginx Stack Generator https://server.smithery.ai/a2a/mysql-redis-nginx-stack-generator/mcpmcp ok
MySQL + Redis + Nginx Stack Generator: composes mysql + nginx + redis — database, web-server, cache via A2A + MCP.
“Redis + Nginx Stack Generator” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Redis + Nginx Stack Generator: composes nginx + redis — web-server, cache via A2A + MCP.
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Redis + Nginx Stack Generator: composes nginx + redis — web-server, cache via A2A + MCP.
“Tech Detect” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Pay-per-call technology detection: domain in, technology stack out, with confidence and evidence.
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Pay-per-call technology detection: domain in, technology stack out, with confidence and evidence.
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GOSCE Portfolio RouterVDA / 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 -
Tech DetectDie Netzhandwerker● healthy
Pay-per-call technology detection: domain in, technology stack out, with confidence and evidence.
C+9.1 🔓 open 107 skills -
deadends.devdeadends.dev● healthy
Structured error knowledge database for AI coding agents. 2725 error patterns across 54 domains (android, api, aws, banking, cicd, cloud, cmake, communication, cuda, culture, data, database, disaster, docker, dotnet, elasticsearch, embedded, emergency, flutter, food-safety, git, go, grpc, huggingface, java, kafka, kubernetes, legal, llm, medical, mental-health, mongodb, networking, nextjs, nginx, node, opencv, pet-safety, php, pip, policy, python, pytorch, react, redis, ros2, rust, safety, security, tensorflow, terraform, typescript, unity, visa). Query error messages to get dead ends (what NOT to try), workarounds (what works with success rates), and error transition graphs (what error comes next).
B9.5 🔓 open 11 skills -
MySQL + Redis + Nginx Stack Generator: composes mysql + nginx + redis — database, web-server, cache via A2A + MCP.
B9.5 🔓 open 2 skills -
Redis + Nginx Stack Generator: composes nginx + redis — web-server, cache via A2A + MCP.
B9.4 🔓 open 2 skills -
Paste access-log lines and get back who crawled you. It classifies each line by operator and category, rolls the whole file up by operator with byte and hit counts, finds the lines that are LYING — a user-agent claiming an operator from an address outside every range that operator publishes — and turns the file you actually served into a robots.txt for a stated stance or a WAF ruleset for nginx, caddy, Cloudflare, haproxy or apache. Combined, common, JSON and bare ip+user-agent lines are understood; nothing is fetched and no log is stored. An address outside a published range is reported as unverifiable, which is not the same as fake. Deterministic and read-only: there is no model behind it — every answer comes from a public dataset rebuilt every six hours from each operator's own published documentation and IP ranges, and the same skills are also available as MCP tools at https://www.pathwren.workers.dev/mcp/triage. No key, no signup, no quota. Independent and unaffiliated with any operator it documents.
B+9.6 🔓 open JSONRPC 5 skills -
Verify at volume that an address really belongs to the crawler operator it claims. Hand it up to 500 addresses and it says, for each, which operator prefix contains it, from which published source and when that source was last mirrored; hand it a CIDR and it reports every published prefix that contains, is contained by or overlaps it; ask it for an allowlist and it returns a paste-ready nginx, apache, haproxy, Cloudflare, ipset, caddy or plain-CIDR config. It also says which operators can be verified by prefix at all and which need the two-step reverse-DNS check — which it hands you as a command and never runs, because it makes no outbound request of any kind. Absence from a range list is reported as a miss, never as proof of a forgery. Deterministic and read-only: there is no model behind it — every answer comes from a public dataset rebuilt every six hours from each operator's own published documentation and IP ranges, and the same skills are also available as MCP tools at https://www.pathwren.workers.dev/mcp/netcheck. No key, no signup, no quota. Independent and unaffiliated with any operator it documents.
B+9.7 🔓 open JSONRPC 5 skills -
Redis + Nginx Stack Generator● healthy
Redis + Nginx Stack Generator: composes nginx + redis — web-server, 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