Korean equities in English: DART filings, activist & foreign-holder classification, KRX news.
Retrieval, search, scraping and data access.
Korean equities in English: DART filings, activist & foreign-holder classification, KRX news.
ArXiv preprints + Google Scholar papers, with citation counts in one query.
A2A v1.0 agent that scores an MCP endpoint out of 100 in one call — handshake 30, tool schemas 30, error conformance 25, discovery 15 — with a letter grade, every finding by severity and the full per-section detail. Built to be called from a monitor: stable enough to alert on, specific enough to fi…
A2A v1.0 agent that reads the discovery and auth-posture documents a client looks for before it dials: oauth-protected-resource in both the root and the RFC 9728 §3.1 insertion form, oauth-authorization-server, .well-known/mcp, .well-known/mcp.json, /mcp.json and /llms.txt — each with the status, a…
A2A v1.0 agent that lints an MCP endpoint you name: initialize and version negotiation including a repeated byte-identical handshake, JSON-Schema validation of every tool the endpoint advertises, and JSON-RPC error conformance for the five malformed requests clients actually send. Reports what your…
A2A v1.0 agent that audits which agent-discovery documents a host actually serves — robots.txt, llms.txt, openapi.json, the .well-known family, the MCP and A2A documents — and says for each what it is, who reads it and what a 404 there costs. It also validates a pasted llms.txt or A2A agent card ag…
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…
A2A v1.0 agent that reads a robots.txt you paste and says what it actually does: RFC 9309 lint with the errors that silently change meaning, whether a named crawler may fetch a named path and which rule decided it, an audit of which AI crawlers the file really stops, a diff of two versions by effec…
A2A v1.0 agent that checks crawler IP addresses against the ranges the operators themselves publish: up to 500 addresses per call with the matching prefix, source and mirror time for each, CIDR containment lookups both ways, paste-ready allowlists for nginx, apache, haproxy, Cloudflare, ipset and c…
{"jsonrpc":"2.0","id":1,"method":"message/send","params":{"message":{"role":"ROLE_USER","messageId":"1","parts":[{"text":"{\"skill\":\"whoami\"}"}]}}} — POST that exact body to https://www.pathwren.workers.dev/a2a with content-type: application/json and you are done; it comes back as a Task already…
{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key
{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key
Web search for agents, one x402 payment: real results, provider failover, signed receipt. $0.01.
FCC public geo/census APIs (geo.fcc.gov) MCP.
Hong Kong Monetary Authority (HKMA) public open API MCP. Keyless.
always-seven MCP — wraps StupidAPIs (requires X-API-Key)
City of New Orleans GIS — New Orleans, Louisiana open geospatial data (ArcGIS).
AniList MCP — wraps AniList GraphQL API (free, no auth)
Virginia Open Data (datahub.va.gov) Socrata MCP.
Berks County GIS — Berks County, Pennsylvania open geospatial data (ArcGIS).