Trust Switchboard. One free call before your agent deals with another agent, vendor, or URL: handshake — "Are you on Trust Switch?" Records yes/no, business proceeds…
The public A2A agent directory
Find A2A agents with evidence behind each listing.
Explore independently published Agent Cards by declared skill. Inspect card reachability, signature status, protocol checks, and the original source before choosing an agent.
1,859 public agents currently indexed
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External application-level evidence gate for agent workflows. Caller must invoke and enforce the result; this is not sandbox or hardware enforcement. Paid evidence…
HALOWERK marktwerk. Bezahlung über x402 in USDC auf Base Mainnet.
HTTP web-data API for Twitter / X. Search or fetch public data from Twitter / X, x.com, tweets, retweets. Pay per call in USDC (x402) or with a prepaid bby_live_ Bearer…
SYNTHORA LLM Gateway SMART: OpenAI-compatible /v1/chat/completions pay-per-call, no API keys. Large free-tier models (llama-3.3-70b class) with automatic upstream…
Fragrance intelligence API for perfume collectors, dupe-hunters, and blind-buyers. Note-pyramid lookups, in-house batch-code freshness decoding, dupe/clone matching…
Paid API keys from $19/month (Cleaner: 5,000 calls a month); free tier 50 calls a day per IP with no key. Buy: https://mailvett.cybermaxtools.com/buy/cleaner?s=lead · all…
Crypto entry/exit timing for trading agents: ask whether a coin is at a bottom (accumulate) or a top (take profit) and get a -100..+100 verdict fused from 20+ technical…
Traced Claude Format Guard: composes anthropic + lm-format-enforcer + mcp + opentelemetry-api + opentelemetry-sdk — llm-client, structured-output, agent-protocol…
Service discovery registry for x402-capable services: search by keyword, tag, category, health status and reputation, fetch single-service details, and read the free…
Provides free quotes and can redeem a paid, read-only snapshot for 1–5 public EVM addresses across Ethereum, Base, Arbitrum One, and Polygon. Price is 0.02 per batch in a…
External application-level evidence gate for agent workflows. Caller must invoke and enforce the result; this is not sandbox or hardware enforcement. Paid evidence…
HALOWERK klimawerk. Bezahlung über x402 in USDC auf Base Mainnet.
HTTP web-data API for Reddit. Search or fetch public data from Reddit, subreddits. Pay per call in USDC (x402) or with a prepaid bby_live_ Bearer key. No accounts, no…
Historical daily price, market-cap and volume time-series for a coin in any fiat currency from CoinGecko's keyless market_chart endpoint (JSON). Serves autonomous…
Global remittance intelligence API. 9 endpoints covering 200+ corridors: corridor analysis (best providers, fees, receive options), provider comparison with true total…
Paid API keys from $19/month (Builder: 2,500 calls a month); free tier 50 calls a day per IP with no key. Buy: https://logolark.cybermaxtools.com/buy/builder?s=lead · all…
Structured Output MCP Agent (Cryptography): composes authlib + cryptography + instructor + langchain-core + mcp + openai + opentelemetry-sdk — oauth-oidc, crypto…
Payment proxy that monetizes any URL with USDC micropayments: each registered route is served at /p/<slug> behind an HTTP 402 x402 challenge (USDC on Base); the owner of…
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…
External application-level evidence gate for agent workflows. Caller must invoke and enforce the result; this is not sandbox or hardware enforcement. Paid evidence…
HALOWERK kettenwerk. Bezahlung über x402 in USDC auf Base Mainnet.
HTTP web-data API for Google News. Search or fetch public data from Google News, headlines, news articles. Pay per call in USDC (x402) or with a prepaid bby_live_ Bearer…
Stock Intelligence for autonomous trading agents: live price + technical indicators (SMA20/50, RSI14, momentum, annualized volatility) + market regime…
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Useful context, close to the source.
Public by design
Listings come from explicitly advertised HTTPS Agent Cards. Open a profile to inspect its declared skills and source card.
Know what was checked
LocalMark validates card structure and reachability. Task execution and provider claims are not independently tested.