@peac/capture-node

Node.js durable storage for the PEAC capture pipeline. Filesystem-backed spool store and dedupe index.

Installation

pnpm add @peac/capture-node

What It Does

@peac/capture-node provides filesystem-backed implementations of the SpoolStore and DedupeIndex interfaces from @peac/capture-core. It handles durable JSONL spool files with fsync-based commit semantics, lockfile-based single-writer guards, corruption detection with read-only fallback, and hard-cap size limits.

How Do I Use It?

Create durable storage for a capture session

import { createFsSpoolStore, createFsDedupeIndex } from '@peac/capture-node';
import { createCaptureSession, createHasher } from '@peac/capture-core';

const store = await createFsSpoolStore({
  filePath: '/var/peac/spool.jsonl',
  autoCommitIntervalMs: 5000,
});

const dedupe = await createFsDedupeIndex({
  filePath: '/var/peac/dedupe.idx',
});

const session = createCaptureSession({
  store,
  dedupe,
  hasher: createHasher(),
});

Check spool diagnostics

import { getFsSpoolDiagnostics } from '@peac/capture-node';

const diag = getFsSpoolDiagnostics(store);
console.log(diag.mode); // 'active' or 'read_only'
console.log(diag.entryCount, diag.fileBytes);

Acquire an explicit lockfile

import { acquireLock } from '@peac/capture-node';

const lock = await acquireLock('/var/peac/spool.jsonl.lock', {
  allowStaleLockBreak: true,
});
// ... perform exclusive work ...
await lock.release();

Integrates With

• @peac/capture-core: Core capture pipeline types and session orchestration
• @peac/schema (Layer 1): Interaction evidence schemas
• @peac/mcp-server (Layer 5): MCP tool server that uses capture for evidence recording

For Agent Developers

If you are building an AI agent or MCP server that needs evidence receipts:

• Start with @peac/mcp-server for a ready-to-use MCP tool server
• Use @peac/protocol for programmatic receipt issuance and verification
• See the llms.txt for a concise overview

License

Apache-2.0

PEAC Protocol is an open source project stewarded by Originary and community contributors.

Docs | GitHub | Originary