sift-sdk

Governance receipts for autonomous AI agents.

Why

Autonomous agents that spend resources without cryptographic receipts create audit risk for their operators. A Sift receipt is an Ed25519-signed proof that an action was evaluated and authorized.

Install

pip install sift-sdk

Usage

from sift_sdk import get_receipt, verify_receipt

# Get a receipt (requires api_key with credits)
receipt = get_receipt(
    agent_id="my-agent",
    action="transfer_funds",
    api_key="sk_test_..."
)

print(receipt.receipt_id)    # unique receipt ID
print(receipt.signature)     # Ed25519 signature
print(receipt.verified)      # True

# Verify any receipt
result = verify_receipt(receipt.receipt_id)
print(result["valid"])  # True

Pricing

• $0.50 per receipt (single)
• $5.00 for 100 receipts ($0.05 each)

API

• POST /v1/receipt -- create receipt (Stripe checkout)
• POST /v1/receipt/instant -- instant receipt (requires credits)
• GET /v1/verify/<id> -- verify receipt
• GET /v1/receipt/<id> -- fetch receipt

Base URL: https://pay.walkosystems.com

Discovery

from sift_sdk import discover_services

services = discover_services("walkosystems.com")
print(services["services"])

Spec

Agent Discovery Protocol