"An MCP server for reading emails" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Check an A2A agent before you delegate, or an MCP server's measured conduct. Free, no key.
Contract-change authorization for AI agents: preflight a change to an API or MCP contract, get a signed decision, and verify the receipt offline. Only a granted change can proceed.
Audits any URL for HTTP 402 x402 V2 compliance, PAYMENT-REQUIRED headers, Bazaar schema, and MCP.
A webhook inbox for agents: one call returns a live URL. Mock, verify, inspect and replay.
Deterministic release-compatibility preflight for OPC UA NodeSet2 XML.
Deterministic preflight for FactoryTalk View tag and alarm CSV imports before re-import.
Free *.pntr.dev dev subdomains — register subdomains, manage DNS and wildcard records, receive email on disposable inboxes, and capture HTTP requests for webhook debugging. OAuth sign-in; free tier.
Discovery registry for AI agents: 660+ APIs, MCP servers and CLIs, each health-checked every 6 hours with real requests — full initialize + tools/list handshakes for MCP, real calls for APIs — plus response-schema validation that catches responses which parse fine but are missing a required field.
Remote MCP that evaluates one public HTTPS URL for WebMCP readiness: intent, tools observed, what to add, what never to expose.
Signed declarations of HTTP API exchanges for agent handoffs. Free preparation and verification; receipt issuance costs 0.002 USDC via x402 on Base. Start and connect: https://datoka.dev/api. Signatures attest declared data, not independent truth.
Webhook, email, WebSocket and tunnel testing for AI agents: capture, wait, verify, replay.
GXEON services, prepaid packs from R$0.99, purchase planning, and agent buyer guidance.
Point Claude Code, Qwen Code, Cursor, or any MCP client at https://docs.jmeter.ai/api/mcp and your agent answers JMeter questions grounded in this documentation, with a source link for every answer. Free, no API key, no signup.
Independent health, price and history for x402/MPP endpoints. Metered over x402; free grade on web.
Point Gecko at an OpenAPI spec; get first-call-correct, auth-hidden agent tools.
AI-callable tools for API mocking, testing, monitoring, security, and automation.
Evidence-cited machine-readable contracts for how agent platform APIs really behave
Inference, news, SEC facts, data checks, web extraction, mail, x402 checks and listing monitoring.
Signed deterministic checks for supplied JSON invoices, OpenAPI API contracts and JSON events.
ProofRun: bounded HTTP acceptance checks for agent deployments. $0.01 USDC per pack.
