Agent-Safe SPL — Python SDK
Python implementation of the SPL (Safe Policy Lisp) evaluator for Agent-Safe capability tokens.
Install
pip install -e . # core (zero runtime deps)
pip install -e ".[crypto]" # with Ed25519/Merkle/hash-chain support
pip install -e ".[dev]" # with test dependencies
Usage
As a library
from spl import parse, verify
policy = parse('(and (= (get req "action") "read") (<= (get req "amount") 100))')
request = {"action": "read", "amount": 50}
env = {
"vars": {},
"per_day_count": lambda action, day: 0,
"crypto": {
"dpop_ok": lambda: True,
"merkle_ok": lambda t: True,
"vrf_ok": lambda d, a: True,
"thresh_ok": lambda: True,
},
}
result = verify(policy, request, env)
print("ALLOW" if result["allow"] else "DENY")
As a CLI
python -m spl examples/policies/family_gifts.spl examples/requests/gift_50_niece.json
# → ALLOW
Tests
pip install -e ".[dev]"
pytest tests/ -v
Requirements
- Python 3.10+
- Zero runtime dependencies for core evaluator
cryptographypackage optional for real Ed25519 verification
1 maintainer
Metadata
1 maintainer
Release files for agent-safe-spl 0.3.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | Provenance | |
|---|---|---|---|---|
| agent_safe_spl-0.3.0.tar.gz | 10.9 kB | With provenance | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| agent_safe_spl-0.3.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 21.8 kB
Release files / agent_safe_spl-0.3.0.tar.gz
| Download URL | agent_safe_spl-0.3.0.tar.gz |
|---|---|
| Size | 10.9 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
50dedd7c1f15d2cda080063a4590dc572258aa4a54435fd41f015e60279afa50
|
|
BLAKE2b-256 checksum How to use checksums |
c994fc3a2651b97df115d617ed59a7f83fbafa65b6fecf105b64456a3795ac97
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.12
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on May 5, 2026.
Transparency logRelease files / agent_safe_spl-0.3.0-py3-none-any.whl
| Download URL | agent_safe_spl-0.3.0-py3-none-any.whl |
|---|---|
| Size | 10.9 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
a0d6d29f7de6c492e978330e5c68f74786ea42761aaf771e4f9ba8e95c51bb10
|
|
BLAKE2b-256 checksum How to use checksums |
8d617a841ac2cb944acddc7ec06e750c03654777e7b5caa26e4605f69d1ea121
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.12
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on May 5, 2026.
Transparency logSecurity for agent-safe-spl 0.3.0
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
Full provenance
All 2 files in this release have been uploaded with provenance metadata.
Attestation for agent_safe_spl-0.3.0.tar.gz
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on May 5, 2026.
Transparency logA note on package security
PyPI is a repository for distributing packages, not a service for auditing them. While third-party security researchers and our staff do their best to detect and remove malicious packages, PyPI cannot guarantee the quality, security or suitability of any given package.
