Signed usage receipts for AI systems.
Website · Docs · Explorer · API Reference
ProofMeter signs what an AI system used — tokens, API calls, compute — then lets authorized parties apply the correct cost view. Every usage event gets an Ed25519-signed, hash-chained receipt that anyone can verify without trusting us.
Agent calls API → ProofMeter signs receipt → Chain it → Settle into Merkle root → Anyone verifies
# TypeScript
npm install proofmeter
# Python
pip install proofmeterimport { ProofMeter } from 'proofmeter';
const meter = new ProofMeter({ apiKey: 'pm_live_...' });
const receipt = await meter.spend({
actor_id: 'my-agent',
provider_id: 'anthropic',
usage_unit: 'tokens',
usage_quantity: 2500,
cost_cents: 8,
});
// → { receipt_id: "rct_...", signature: "...", status: "verified" }curl https://api.proofmeter.com/v1/receipts/rct_abc123/verify| Repo | Description |
|---|---|
| proofmeter | Core infrastructure — API, dashboard, landing, docs |
| sdk | TypeScript SDK (npm install proofmeter) |
- Explorer: proofmeter.com/explorer — inspect receipts, settlements, capabilities
- API: api.proofmeter.com/v1/spec — protocol spec
- Docs: proofmeter.com/docs — TypeScript, Python, REST API, MCP
Patent Pending.