inth3shadows/runecho

Overview

Runecho is a Go-based tool that prevents AI coding agents from writing calls to functions that do not exist, before the edit is applied. It uses deterministic checks and requires no LLM or API keys.

Best for

Best for
Developers using AI coding agents who want to prevent hallucinated function calls.

Use cases

• Guard AI-generated code against undefined function calls
• Add a pre-edit validation step to AI coding workflows
• Catch hallucinated function references before they land

How to use

Tested with

Claude Code

Notes

Runecho is a Go-based tool that prevents AI coding agents from writing calls to functions that do not exist, before the edit is applied. It uses deterministic checks and requires no LLM or API keys.

0 stars on GitHub. Last updated 2026-10-08. Licensed MIT.

Use cases

• Guard AI-generated code against undefined function calls
• Add a pre-edit validation step to AI coding workflows
• Catch hallucinated function references before they land

Pros

• Deterministic, no LLM or API keys required
• Catches errors before the edit is applied
• Lightweight Go implementation

Cons

• Only checks function existence, not other code issues
• New project with no stars or proven track record
• Requires integration into existing AI agent pipeline

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.