This release is a pre-release and may not be stable for production use.
Sengol
Signed, offline-verifiable evidence for AI agents in regulated institutions.
Sengol evaluates every agent response against a ControlBook (a regulation expressed as configuration), gates deployments in CI, and writes each verdict as an HMAC-signed, hash-chained, Ed25519-countersigned record. An auditor verifies the exported evidence pack months later, on a laptop, without Sengol: the gate verdict and the audit record are the same signed object.
Sengol is self-hosted and single-tenant: one install is one tenant, inside your own network. Nothing leaves it.
Regulations arrive as configuration: OSFI E-23, FINTRAC, PIPEDA, SR 11-7,
EU AI Act, GDPR, HIPAA, NIST AI RMF, ISO 42001 and more, 29 cataloged total in
sengol/policies/catalog.yaml; a custom internal policy is one more entry.
Fifteen-minute quickstart
make keys # Ed25519 evidence signing key into .env
make demo # Postgres + API + Console, seeded with a five-agent demo fleet, the OSFI E-23 ControlBook and a review queue
open http://localhost:8000
sengol gate --config sengol.yaml # verdict = signed record
sengol export --agent rag-advisor-001 --out pack.zip
# Published on PyPI (see docs/evidence/offline-verification.mdx):
pip install "sengol-verify>=2.1.0"
sengol-verify pack.zip --trusted-key "<key_id>=<appliance-key.pem>" # verify without Sengol
# <key_id> and the Ed25519 public key come from the operator, not from pack.zip. Without
# --trusted-key the countersignature step is UNVERIFIABLE and the exit code is 3
# (see docs/evidence/offline-verification.mdx).
The full walk-through, Entra ID and SCIM setup, and the operator references
are in docs/ (quickstart.mdx first). Product scope is in
PRODUCT.md; current state in STATUS.md.
Licence
Sengol 2.0 is proprietary software. A signed licence file
(SENGOL_LICENSE_FILE) is verified offline at boot against the public keys in
sengol/governance/trusted_keys/; the API and sengol worker run refuse to
start without one. The sengol CLI is otherwise an API client and needs no
local licence. There is no free
tier. A lapsed licence never costs access to evidence: export and
verification keep working, including with the separate sengol-verify. Fourteen-day trials and
licences are issued at https://sengol.io/signup.html.
A build trusts only the anchors it ships. From the first release carrying the
2026-09-prodanchor, production licences verify; releases cut before it have an emptytrusted_keys/MANIFEST.jsonand verify nothing. CheckSTATUS.mdfor the release you are installing.
The verifier, sengol-verify,
is Apache-2.0 and has no dependency on this package.
Development
uv sync --all-extras, then uv run pytest --timeout=60. Tests marked
postgres need a live database (docker compose up postgres). Invariants and
review rules are in AGENTS.md; session rules in
CLAUDE.md.
Metadata
Release files for sengol 2.0.1a21
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | |
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| sengol-2.0.1a21.tar.gz | 13.5 MB | Without provenance | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| sengol-2.0.1a21-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 16.5 MB
Release files / sengol-2.0.1a21.tar.gz
| Download URL | sengol-2.0.1a21.tar.gz |
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| Size | 13.5 MB |
| Tags | Source |
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Release files / sengol-2.0.1a21-py3-none-any.whl
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| Tags | Python 3 |
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