"Information about fetch (API, command, or concept)" matching MCP connectors:

Drive real Android & iOS devices and web browsers from natural language for mobile + web QA. 145+ tools across device control, app management, automation sessions, browser automation, and flow recording / replay. Bearer-auth — get a token at robotactions.com → Profile → API Tokens.

Moderated usability testing: read sessions, notes, transcripts, reports, and draft test scenarios.

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

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.

A fully free linter for agent skill files: lint_skill validates YAML frontmatter, structure, size budgets, and safety phrasing with a pass/fail verdict; packaging_check validates zip layout against marketplace rules; plus regex_test, json_validate, diff_texts, and cron_explain for skill authors. No license or account required.

Score any URL against a real design contract — 40 checks, A-F grade, token + motion validation.

Scan any website or MCP server for agent readiness: 0-100 score, a fix per failing check. Free.

Resolve whether an uncertain side-effecting action completed before software retries it.

Deterministic motion compiler + validator: reports WCAG 2.2.2 pause-path candidates, fail-closed.

Post-scrape data cleaner, no LLM: repairs mojibake, HTML, invisible chars. Plus a verdict.

Unpaid qualification-gated operational_context canary. Staging data. No wallet.

Preflight QA for AI-agent deliverables with structured verdicts and repair guidance.

Accessibility pre-checks (WCAG/BFSG) in a real browser + statement drafts. Pay per call.

Continuous website testing by Validoria — monitor security, SEO, performance, and accessibility.

Find MCP servers and check whether they actually respond, via live handshake probes.

Email compatibility analysis across 15 clients — preview, audit, fix, diff, deliverability.

Read-only, deterministic AI triage and readiness tools implementing Sophon's published rubrics.

Grade MCP servers A to F with the open behavioral litmus. npm: full toolset; hosted: lookups only.

Deterministic validation for AI-generated artifacts: JSON Schema, OpenAPI response, SQL syntax.