"A guide to finding the best trading algorithms" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Find the best pay-per-call API for any task: price, uptime and real usage across 19,000+ APIs.
A webhook inbox for agents: one call returns a live URL. Mock, verify, inspect and replay.
See which AI models fall for traps in everyday jobs, and check or scan any MCP server, skill or package before your agent installs it. No sign-in; read-only; returns structured data.
Serverless 15-tool B2B email deliverability, domain security, OpenAPI breaking-change release gate, LLMO /llms.txt auditor, and quantitative trading risk MCP connector.
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.
Behind Check and GAIP Watch, and Diagnose: A2A, MCP and OpenAPI checks with a dated change log.
Find and live-check the paid x402 API for an agent task, ranked by real 30-day payers and price.
Write, check, render and save sequence diagrams with the request and response on every arrow.
Simceptor is an AI-native Mock API simulation platform with a built-in MCP server. It enables AI agents to create, inspect, update, and test dynamic mock APIs, conditional response rules, stateful session simulations, and network latency directly from context.
x402 endpoint doctor: grades a paid route A-F unpaid, with paste-ready fixes. By Crypto Money Maker
Grade MCP tool definitions for agent-readiness: score, A-F grade, fixes, est. token cost.
Turn any public webpage into JSON with AI, save it as a live JSON API, and call it from your agent.
Traffic Parrot simulates APIs and messaging. Request or withdraw a trial, read docs, send feedback.
Pair-level MCP+A2A conformance verdicts for the exact pair you delegate across.
Pays your endpoint like a stranger would and signs a checkout conformance verdict.
Is this x402/MPP API safe to pay? $0.001 preflight, fixes, a $0.25 test purchase. Free quick check.
Test and debug your AI agent's Web Bot Auth (RFC 9421) signature: is it valid, and what to fix?
Refusal-dialect probe: signed cards naming what a server's 429 means and whether its meter lies.
Remote MCP that evaluates one public HTTPS URL for WebMCP readiness: intent, tools observed, what to add, what never to expose.
Read and submit the CurlShip directory. Paid actions return checkout_url.
Census and digest-verify a remote MCP server's loadable skills per host persona.
Retrieve YouTube transcripts with timestamps, native captions and asynchronous generation when captions are unavailable. Requires a Capslane API key.
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.
Free platform to test MCP clients without installing anything. Create mock tools with dynamic templates, configurable delays, conditions (if/then), and response sequences. Supports JSON-RPC 2.0 over Streamable HTTP. Built-in text_echo and json_echo tools. Rate-limited tiers: anonymous (5 calls/min, 1 mock tool), registered (10 calls/min, 4 mock tools), premium (60 calls/min, unlimited). Zero setup — no install, no registration required. More info: https://www.testmcp.dev
API documentation drifts away from the running service, so consumers integrate against a contract nobody keeps. Routebase keeps API design, testing, mocking and documentation on one living source of truth, and this MCP server exposes that workspace to AI agents. Agents can design endpoints, write and run test suites, manage mock servers and publish documentation, always under the permissions of the connected Routebase account.
Live road conditions for the agent web: check a site or API before acting, report after.
Check an x402 endpoint before you pay it, then test a payment and follow it to settlement.
npm MCP — wraps the npm Registry API (free, no auth)
Guide developers from setup through a verified, policy-aware, audited Alter API call.
MCP endpoint to APIbase catalog (https://apibase.pro/llms.txt). USDC: x402 Base, MPP Tempo.
