SPR SDK for Python
SPR, the Sealed Payment Record, in Python: seal your AI agents' payments on your own machine with your company's own key, and check any SPR record or package without Luca. Apache-2.0. Needs cryptography.
from spr import SprBook
book = SprBook(dir="books", agent_id="agt_research", entity="Example Co")
# Before paying: declare, and sign the nonce as the payment's nonce where the rail lets you (x402, EIP-3009).
intent = book.declare(purpose="Market data for the pricing model", max_amount_minor=20000, currency="USDC")
nonce = book.nonce_for(intent["intent_id"])
if book.check_payment(10000, "USDC", nonce=nonce)["decision"] != "approve":
raise SystemExit("declined")
# After paying: seal it.
record = book.seal(rail="x402", source_id=tx_hash, amount_minor=10000, currency="USDC", nonce=nonce)
The folder, files and records are the same as the JavaScript SDK's, so either language opens the other's book.
Check a package, or run the test vectors:
python -m spr <package folder>
python -m spr --vectors ../packages/spr/vectors/vectors.json
Tests: python -m unittest discover -s tests, from this folder.
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Release files for spr-sdk 0.1.0
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
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| spr_sdk-0.1.0.tar.gz | 20.2 kB | With provenance | Details for spr_sdk-0.1.0.tar.gz |
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| File | Interpreter | ABI | Platform | Actions Reset |
|---|---|---|---|---|
| spr_sdk-0.1.0-py3-none-any.whl | Python 3 | none | any | Details for spr_sdk-0.1.0-py3-none-any.whl |
Total release size: 40.7 kB
Release files / spr_sdk-0.1.0.tar.gz
| Download URL | spr_sdk-0.1.0.tar.gz |
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| Size | 20.2 kB |
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| Tags | Python 3 |
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