Anti-hallucination gate for AI coding agents — 8 MCP tools catch invented APIs (17 languages), fake "all tests pass" claims, and slopsquatting packages before they ship. Zero-dependency Agent Plugins
The anti-hallucination gate for AI coding agents.
AI agents invent APIs. They claim "all tests pass" without running anything. They ship confident, fabricated code. AgentSeed is the gate that stops it — a zero-dependency plugin that verifies code before it is marked done, so "done" means observed fact, not self-report.
⭐ Like this project? Star it — it helps developers find guardrails before they ship hallucinated code.
LLMs hallucinate — and in code that means invented APIs, undefined identifiers, fake test passes, and confident overclaims:
- 15.1% of code hallucinations call APIs that don't exist or were never imported (arXiv:2404.00971). - Windows note: mcp.json may only name one literal interpreter, and it ships python3 (right for macOS/Linux/WSL). On Windows run ./install.ps1, which rewrites command to python in the installed copy, or edit it by hand as "command": "python" with "args": ["server/guardserver.py"] — command is a string, the array belongs to args. npx agentseed-mcp needs no editing at all: the npm shim picks the interpreter per platform.
Zero required dependencies — pure Python standard library; optional extras upgrade two tools to industry-standard engines (see below).
Tool Catches Technique --- --- --- verifycode Invented APIs / undefined symbols Python AST + config-driven lexical passes (17 languages) checkcontract Code violates a written spec requires/prohibits contract check checkimports Hallucinated packages (slopsquatting) stdlib + known-packages allowlist check scanhallucination Placeholder code, overclaims, fabricated content 28+ signals in
From the project README.
Add the radar badge to your README — it shows your project was picked up by MCP Radar and links to this page:
[](https://mcp.liqiwa.com/s/Morningstar202604--agentseed-mcp.html)
Anti-hallucination guardrails for AI coding agents - hybrid Skill + MCP server (6 tools) that verifies code before it is marked done. Works with Claude Code, Cursor, VS Code, Copilot.
sainitish1609/mcp-guard🛡️ Ultra-fast local security firewall, secret sanitizer, and context token compressor for Claude Code, Cursor, and MCP AI agents.
abhishekswe/agent-fastpathJev MCP server: a decision layer for coding agents, built on TypeSafe Jev (System One model). Ship gates, risk checks, file triage that keeps files out of context, and a safe headless browser, with ca
2akouwu/reverifyStop your AI from making things up — it proposes, deterministic tools decide, every claim checked against ground truth with evidence. Grounded facts and context survive resets. Reverse engineering is
00200200/usagetrimKeep the signal. Cut the noise. Local CLI + MCP — fold verbose tool output for Claude Code, Codex, Cursor & Desktop.
00200200/tokencutKeep the signal. Cut the noise. Local CLI + MCP — fold verbose tool output for Claude Code, Codex, Cursor & Desktop.
The top new MCP servers of the week, every Monday. No spam, unsubscribe anytime.