"An email protocol for sending and receiving messages" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Verify before your agent acts on data it paid for. Signed verdicts, checkable offline, via x402.
Conformance checker for MCP servers. Free, no key, verdicts recomputable and re-measured daily.
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.
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.
Moderated usability testing: read sessions, notes, transcripts, reports, and draft test scenarios.
Prompt evals over MCP: run a prompt on your dataset, score each output 1-5 with an LLM judge.
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
Testing, benchmarking and auditing autonomous AI agents — methods, harnesses, evidence
Tests an AI agent's purchase against the task it was given. Paid per call in USDC via x402.
Validate HTML/CSS, audit SEO and JSON-LD, check links, and capture responsive screenshots.
Hire a real human for real-world verification, product testing, AI output review, and errands.
Scan GitHub-hosted AI skills for vulnerabilities: prompt injection, malware, OWASP LLM Top 10.
Analyze, audit, fix and diff HTML, MJML, Maizzle and React Email across 21 email clients.
MERCATOR Verify: evidence-backed verification and decision support for autonomous agents.
Lint a SKILL.md for frontmatter, structure, secrets and size. All 6 tools free.
Ensemble testing of web pages for accessibility, usability, and standards conformity
Validate OpenRTB bid requests and responses against IAB specs. ARTF, Rust core.
