# Openclaw Interchange

> Shared .md interchange library for OpenClaw skills — atomic writes, deterministic serialization, YAML frontmatter, advisory locking, and schema validation. The foundation all other OpenClaw skills build on.

- Skill: `modbender/openclaw-interchange` (Agent Skill, multi-file: 19 files)
- Install (CLI): `npx skillmds@latest add modbender/openclaw-interchange`
- Raw SKILL.md: https://api.skillmd.com/api/skills/modbender/openclaw-interchange/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: modbender (https://skillmd.com/u/modbender)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/modbender/openclaw-interchange

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# @openclaw/interchange

The shared library that powers agent-to-agent communication via `.md` files.

## Usage

```javascript
import { writeMd, readMd, acquireLock } from '@openclaw/interchange';

// Write an interchange file atomically
await writeMd('ops/status.md', { skill: 'crm', status: 'healthy' }, '## Status\nAll systems go.');

// Read it back
const { meta, content } = readMd('ops/status.md');
```

## Key Features
- Atomic writes (tmp + fsync + rename)
- Deterministic serialization (sorted keys, stable YAML)
- Advisory file locking with stale lock detection
- YAML frontmatter parsing
- Schema validation
- Circuit breaker pattern
- Generation tracking + content hashing