"dev.to" matching MCP connectors:

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

Verify scraped data against the live source page. Signed verdicts, $0.01 via x402.

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.

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

Deterministic JSON checks with signed evidence and x402-paid execution

Voice-powered bug reporting with 13 MCP tools. Record bugs by talking; let AI find and fix them.

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

Hire a real human for real-world verification, product testing, AI output review, and errands.

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

Deterministic recipe verification engine — validates AI-generated recipes against master SOPs.

Generate realistic relational test data — 156 field types, 22 locales, JSON/CSV/SQL, free previews.

Read-only MCP server for the OPERANT AI operating-agent calibration benchmark.

Adversarial behavioural-bias engine — audits your decisions for cognitive biases via your own AI.

Evaluates UI designs for WCAG accessibility issues automated scanners miss. Paid via x402 on Base.

MCP server for static security analysis of Android source code

Conformance checker for MCP servers. Free, no key, verdicts recomputable and re-measured daily.

Check AI work against requirements and return structured verdicts, findings, and repair steps.

3rd Generation Testing (3TG) — generate deterministic test suites from Markdown spec tables via MCP.

33 tools that make AI write, implement, and verify intent against explicit, testable constraints.