"Databases or database systems written in Python, like Postgres" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Parse WebVTT, SRT, or TTML for conformance, timing, overlaps, line length, and reading speed.
Check that your AI is being logical. Free tool that mathematically catches contradictions in agent reasoning. No account needed. Also offers paid guardrails that converts natural language to formal verification proofs, that anyone can check succinctly.
Evidence-gated task verification for AI agents. Decompose goals into acceptance criteria, attach proof (screenshot, curl, file), independent LLM judge accepts or rejects. 24 tools. Hosted remote MCP (streamable-http, OAuth 2.1 + DCR).
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
Rule engine with built-in simulation. 55 MCP tools for complete business rule lifecycle management.
Load testing and synthetic monitoring platform: test with Playwright, Browser Bot, or Protocol Bots.
Runs your code against a contract; HELD or BROKE at the exact input. Deterministic. 0.10 USDC/call.
What is known to be broken in an MCP server or API operation, with the check that found it.
Explore Upforge services and evidence, or submit a prototype for a human-approved static fit check.
Whether a registry MCP server works for a stock client, and what changed in its tools. Free, no key.
X-Z-CS AI validation with auditable reasoning. 8 active tools; 5 in maintenance. v0.5.63
Hosted Python sandbox for package runtime verification: pip install and usable-import evidence.
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.
Compare two versions of a JSON row list: what was added, removed or changed, field by field.
Test FIX from Claude, ChatGPT, or Cursor: free sandbox FIX sessions or your own FIXSIM instances.
Tests an AI agent's purchase against the task it was given. Paid per call in USDC via x402.
Check what a paid x402 endpoint or MCP server delivered, from probes anyone can repeat.
Deterministic operations reconciliation for AI agents: COMPLETE, INCOMPLETE, or NEEDS_REVIEW.
Give AI coding agents access to your Vynix visual feedback, bug reports, and AI diagnosis.
Scan any website or MCP server for agent readiness: 0-100 score, a fix per failing check. Free.
