"Integrating Claude Desktop with a Local LLM using the LMStudio API" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Lint a SKILL.md for frontmatter, structure, secrets and size. All 6 tools free.
Risk-scan a diff, flag AI-generated-code tells, find secrets. 5 of 7 tools need no account.
UI Verify is visual regression testing built for coding agents. Connect the MCP server and your agent (Claude Code, Cursor, Codex) pulls a pull request's UI changes into the conversation, views each visual diff, reads the AI judge's verdict of regression vs intended change, and accepts the intended baselines - all over MCP.
Audit and build email signatures that survive Gmail, Outlook desktop and Apple Mail.
Load testing and synthetic monitoring platform: test with Playwright, Browser Bot, or Protocol Bots.
Accessibility and WCAG data for your own websites: fix lists, live checks, and fix validation.
Author and validate Calaf workspace seeds against the app's real importer. No account needed.
Generate synthetic random user data for testing, demos, and development without using real persona.
Moderated usability testing: read sessions, notes, transcripts, reports, and draft test scenarios.
Test-inbox API for email and SMS: create inboxes, long-poll messages, extract OTPs and links.
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
Score any URL against a real design contract — 42 checks, A-F grade, token + motion validation.
Whether a stock client can actually use an MCP server from the registry. Free, no key.
Probe a signup URL you own and score whether an AI agent can sign up unaided.
Prompt evals over MCP: run a prompt on your dataset, score each output 1-5 with an LLM judge.
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.
Compare two versions of a JSON row list: what was added, removed or changed, field by field.
Test HTTP 429/503 retries and Retry-After with server-observed traces; share synthetic findings.
Deterministic motion compiler + validator: reports WCAG 2.2.2 pause-path candidates, fail-closed.
