"A server that provides personalized flight search recommendations" 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 any email signature and build ones that survive real email clients. check_email_signature takes the HTML of an existing signature and returns a verdict for Gmail web, Gmail Android, Gmail iOS, Outlook 365, Outlook desktop (Windows), Apple Mail and iOS Mail, plus every problem found with the rule it breaks and how to fix it. Free, no account needed. email_client_compatibility_matrix answers what a given client supports across 12 HTML and CSS features that decide whether a signature holds up: tables, flex and grid, style blocks, background-image, base64 images, border-radius, letter-spacing, text-transform, web fonts, max-width, td margins and image sizing. create_email_signature returns ready-to-paste HTML built to those rules: tables only, inline CSS, absolute pixel widths, email-safe fonts, and images by absolute URL rather than base64, which Gmail refuses to render. Also available as a free web tool at signatureforever.com/en/check. Built by VARGER Group LLC.
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.
Test a Python package/version on a target runtime. Scoped Linux install and usable-import evidence.
Score any URL against a real design contract — 42 checks, A-F grade, token + motion validation.
Checks the structural integrity of translated resource dictionaries against a source dictionary y...
Probe a signup URL you own and score whether an AI agent can sign up unaided.
Test HTTP 429/503 retries and Retry-After with server-observed traces; share synthetic findings.
MCP server for visual regression testing: triage a PR's UI diffs from your coding agent.
Deterministic acceptance report for a supplied product catalog: validates price/currency/availabi...
Simulate a CSV import against a supplied typed column contract and return exact accepted rows, re...
Check what a paid x402 endpoint or MCP server delivered, from probes anyone can repeat.
Validates JSON against a JSON Schema, lists violations. x402 payment required (testnet USDC).
Defectbird: the site's own MCP server — dataset; every answer cites the site.
Webhook capture bins for agents: get a URL, wait for webhooks, set replies, verify signatures.
Class Q Checker: the site's own MCP server — checker, enquiry (enquiry = a human handoff, not a...
Smoke Control Checker: the site's own MCP server — checker, enquiry (enquiry = a human handoff,...
