@agent-receipts/sdk

TypeScript SDK for Agent Receipts. Track, verify, and manage signed receipts for AI agent actions. Everything runs locally.

Install

npm install @agent-receipts/sdk

Quick Start

import { AgentReceipts } from '@agent-receipts/sdk'

const ar = new AgentReceipts()

const receipt = await ar.track({
  action: 'generate_report',
  input: { query: 'Q4 revenue' },
  output: { total: 142000 },
})

console.log(receipt.receipt_id)  // rcpt_8f3k2j4n...
console.log(receipt.signature)   // ed25519 hex signature

API

new AgentReceipts(config?)

const ar = new AgentReceipts({
  dataDir: '~/.agent-receipts',  // optional, defaults to ~/.agent-receipts
})

ar.track(params) — Track a completed action

const receipt = await ar.track({
  action: 'analyze_data',
  input: { dataset: 'sales_2024' },
  output: { summary: 'Revenue up 12%' },
  agent_id: 'analyst-v2',
  chain_id: 'chain_abc',              // optional, auto-generated if omitted
  parent_receipt_id: 'rcpt_prev',     // optional, links to parent receipt
})

ar.emit(params) — Alias for track

const receipt = await ar.emit({ action: 'my_action', input: 'data' })

ar.start(params) — Start a pending receipt

const receipt = await ar.start({
  action: 'long_running_task',
  input: { job_id: '12345' },
})

ar.complete(receiptId, params) — Complete a pending receipt

const completed = await ar.complete(receipt.receipt_id, {
  output: { result: 'done' },
  status: 'completed',
})

ar.verify(receiptId) — Verify a receipt signature

const { verified, receipt } = await ar.verify('rcpt_8f3k2j4n')

ar.get(receiptId) — Get a receipt by ID

const receipt = await ar.get('rcpt_8f3k2j4n')

ar.list(filter?) — List receipts

const result = await ar.list({ agent_id: 'my-agent', status: 'completed' })
// result.data: ActionReceipt[]
// result.pagination: { page, pageSize, total }

ar.getPublicKey() — Get the signing public key

const publicKey = await ar.getPublicKey()
// 64-char hex string (Ed25519 public key)

ar.track() with Constraints

const receipt = await ar.track({
  action: 'generate_summary',
  input: { document_id: 'doc-q4-2024' },
  output: { summary: 'Revenue grew 12% YoY...' },
  latency_ms: 1200,
  cost_usd: 0.005,
  constraints: [
    { type: 'max_latency_ms', value: 5000 },
    { type: 'max_cost_usd', value: 0.01 },
    { type: 'min_confidence', value: 0.8 },
  ],
})
// receipt.constraint_result.passed → true/false

ar.getJudgments(receiptId) — Get judgments

const judgments = await ar.getJudgments('rcpt_8f3k2j4n')

ar.cleanup() — Delete expired receipts

const { deleted, remaining } = await ar.cleanup()

Examples

See the examples directory for complete usage patterns including chained receipts and multi-step pipelines.

License

MIT