"A guide to interface components in UI design" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
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.
Give AI assistants the context behind client website feedback. Read comments, screenshots, replies, element details, and developer briefs; organize priorities, update statuses, and export feedback from authorized projects. Coding agents with repository access can investigate issues and prepare fixes for review. Connect through Streamable HTTP and browser OAuth using a Simple Commenter account.
Simulate, test, and analyze cloud architectures without deploying real infrastructure. Cloud World Model enables AI agents to model cloud environments, evaluate architecture behavior and costs, run failure and chaos simulations, and explore infrastructure scenarios across cloud providers.
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
Whether a registry MCP server works for a stock client, and what changed in its tools. Free, no key.
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.
Score any URL against a real design contract — 42 checks, A-F grade, token + motion validation.
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.
Probe a signup URL you own and score whether an AI agent can sign up unaided.
Compare two versions of a JSON row list: what was added, removed or changed, field by field.
Rule engine with built-in simulation. 55 MCP tools for complete business rule lifecycle management.
Checks the structural integrity of translated resource dictionaries against a source dictionary y...
X-Z-CS AI validation with auditable reasoning. 8 active tools; 5 in maintenance. v0.5.62
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).
