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MCP servers tagged agent-testing
17 live MCP servers tagged "agent-testing", ranked by trust score. Tags come from package metadata and repository topics, so this list covers servers across every category that work with agent-testing.
Better Agents
Standards for building agents, better
Coder Eval
Test that your Claude Code skills, MCP servers, and CLIs actually work when an agent uses them — sandboxed YAML suites, activation checks, A/B experiments, CI gates.
Multi Agent Workflow Lab
Testing and observability for multi-agent delegation, MCP tools, permissions, sandboxed actions, prompts, and workflow replay.
Proofagent Harness
Open-source test harness for AI agents. Stress-test production agents with adversarial multi-turn scenarios in CI
server
LangWatch — independent third-party profile of a public API surface, by API Evangelist. LangWatch is an open-source LLM observability, evaluation, and AI agent testing platform. B…
Agents.KT
Typed Kotlin DSL framework for AI agent systems.
Agent Triage
Diagnose your AI agents in production. Extract policies from prompts, evaluate traces, generate diagnostic reports.
AgentRigor
Property-based reliability testing for tool-using AI agents under partial failures.
Era
Build, test and benchmark agents across a complete simulated enterprise
Agent Assert
Playwright-based reference implementation for testing AI agents that call tools. Five patterns: tool invocation, behavior contracts, multi-step trace verification, boundary enforc…
Flowproof
Agents are starting to run real business processes. flowproof tests them like anything else: record one real run, then replay it on every commit with zero LLM calls, asserting whi…
Ghostlab
Local end-to-end testing lab for any MCP server: coding agents role-play real users, drive your tools over multiple turns, score runs, and render/interact with MCP Apps ui:// widg…
Ethogram
Open-source behavioral contract testing for AI agents. Define critical behavior, run the real agent, and catch regressions.
Vector Plugin
Red-team scanning for LLM agents, wired into your AI editor — one plugin for Claude Code, Cursor, Codex, and Gemini CLI
Verifyax Plugins
Claude Code plugin marketplace for VerifyAX — agent evaluation, functional and non-functional verification from Conscium
Mocking Agents MCP A2a
How to mock agents, MCP servers and A2A peers for production-grade agent development. Protocol surfaces verified against MCP 2026-07-28 and A2A v1.0 (August 2026).
Fastmcp Fleet
Local-first FastMCP platform: 160+ mock MCP servers with fixture-backed responses, per-server SQLite state, and a central gateway. Deterministic for offline agent trajectory testi…