"Understanding Prompts or Prompt Engineering" matching MCP connectors:

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).

Estimated game fps for any GPU or Apple Silicon chip, with the limiter and tweaks.

Check if your MCP server is ready to publish on the MCP Registry, Smithery, or npm.

Runs your code against a contract; returns HELD or BROKE at the exact input. Deterministic.

PQS scores any prompt before the model runs. 8 dimensions. 5 frameworks. Pre-flight, not post-hoc.

The world's first named AI prompt quality score. Score, optimize, and compare LLM prompts before they hit any model. Free tier available. Built on PEEM, RAGAS, G-Eval, and MT-Bench frameworks. x402-native on Base.

130+ QA & dev tools for AI agents: prompt injection, RAG testing, VLM eval, guardrails. Free.

End-to-end API testing — generate and run tests from OpenAPI, curl, Postman, or real user traffic.

Validates cron expressions and finds DST bugs that make jobs silently skip or double-fire.

Audits MCP tool definitions for patterns that make models call tools wrong or mis-fill args.

WCAG-Compliance/wcagc-mcp lets an assistant run real axe-core accessibility scans through the user's own wcagc account, rather than guessing accessibility from markup it can see. Tools cover a single URL or PDF, a full-site crawl, saved multi-step journeys, and violation trends.

AI-native mock API server with MCP. Create REST/SOAP mocks from Claude, Cursor, or Windsurf.

MCP server for e-mail testing: create disposable inboxes, wait for delivery, and extract e-mail content or links - all from your AI agent or test automation workflow. Get a free API key on https://app.zyntra.app/

Scan GitHub-hosted AI skills for vulnerabilities: prompt injection, malware, OWASP LLM Top 10.

Remote MCP for Gemini upgrade evals, prompt regressions, output diffs, and eval receipts.

Test and compare prompts across any AI provider. Bring your own keys.

Generate SBOMs, scan vulnerabilities, and analyze dependencies from local projects or Git repos.

Security scanner for MCP servers. Detect vulnerabilities, prompt injection, and tool poisoning.

Compare two JSON files deeply without worrying about key or array order. Detect missing, extra, an…