AIXV - AI Integrity Exchange & Verification

AIXV is an open standard for AI artifact attestation, provenance, rollback, compromise detection, and investigation.

In practical terms, AIXV helps organizations answer high-stakes questions before deploying or accepting AI artifacts:

• What exactly is this artifact?
• Who produced or approved it?
• What evidence supports trusting it?
• Is it currently affected by an advisory or policy violation?
• If compromised, what is the safest rollback path?

AIXV is built for three audiences that need shared, verifiable answers:

• Technical teams: deterministic verification and machine-readable admission decisions.
• Enterprise and public-sector risk owners: auditable evidence, policy controls, and incident traceability.
• Policy, governance, and assurance functions: explicit trust assumptions, conformance checks, and compatibility contracts.

AIXV composes Sigstore cryptographic primitives and adds AI-native semantics:

• artifact typing,
• lineage graphs,
• ML-specific attestations,
• advisory/recall workflows,
• and policy-driven verification.

Release Posture

Current maturity: Pre-alpha.

This repository is a functional preview of the AIXV standard, but not yet a final ratified standard release.

Stable enough for pilot evaluation

• Core primitives and schemas:
  • SignedRecord (aixv.signed-record/v1)
  • VerifyPolicy (aixv.policy/v1)
  • AdmissionDecision
• Fail-closed verification and policy semantics.
• Deterministic JSON output mode (--json) with tested contract behavior.
• CI quality gates (ruff, mypy, pytest, build).

Still evolving

• Broader conformance vector coverage and certification workflow.
• Formal governance and external audit signals.
• Wider ecosystem integrations and migration tooling.

Adoption Signals

For security and procurement reviews, the strongest immediate signals are:

• aixv conformance --json produces a machine-readable conformance report.
• docs/THREAT_MODEL.md, SECURITY.md, and docs/COMPATIBILITY.md define trust, reporting, and compatibility expectations.
• CI enforces lint, typing, tests, build, and dedicated conformance workflow checks.
• Scorecard and CodeQL workflows provide continuous security posture visibility in GitHub Security.

Standards and Security Docs

• docs/AIXV_STANDARD.md
• docs/NORMATIVE_CORE.md
• docs/QUALITY_BAR.md
• docs/THREAT_MODEL.md
• SECURITY.md
• docs/COMPATIBILITY.md
• docs/TERMINOLOGY.md
• docs/REGISTRIES.md
• docs/PROFILES.md
• docs/CONFORMANCE.md
• docs/GOVERNANCE.md
• docs/REPO_CONTROLS.md
• RELEASE.md

Installation

pip install aixv

Quickstart (Core Flow)

# 1) Sign an artifact
aixv sign model.safetensors --identity-token-env SIGSTORE_ID_TOKEN

# 2) Create and sign a policy record
aixv policy create --input policy.json --sign

# 3) Verify artifact with signed policy + trusted policy signer
aixv verify model.safetensors \
  --policy .aixv/policies/policy.json \
  --policy-trusted-subject security-policy@aixv.org \
  --json

# 4) Run conformance checks
aixv conformance --json

CLI Surface

aixv version
aixv sign model.safetensors --identity-token-env SIGSTORE_ID_TOKEN
aixv verify model.safetensors --identity alice@example.com --issuer https://accounts.google.com
aixv attest model.safetensors --predicate training --input training.json
aixv provenance model.safetensors --depth 3
aixv advisory create --advisory-id ADV-2026-0001 --severity critical --input advisory.json --sign
aixv advisory verify .aixv/advisories/ADV-2026-0001.json --trusted-subject security@aixv.org
aixv policy create --input policy.json --sign
aixv policy verify .aixv/policies/policy.json --trusted-subject security-policy@aixv.org
aixv record create --kind waiver --record-id WVR-2026-01 --input waiver.json --sign
aixv record verify .aixv/policies/policy.json --kind policy --trusted-subject security-policy@aixv.org
aixv conformance --json
aixv rollback model-v2.safetensors --to sha256:...
aixv export model.safetensors --format in-toto

Policy Example

{
  "policy_type": "aixv.policy/v1",
  "allow_subjects": ["alice@example.com"],
  "allow_issuers": ["https://accounts.google.com"],
  "advisory_allow_subjects": ["security@aixv.org"],
  "max_bundle_age_days": 30,
  "deny_advisory_severity_at_or_above": "high",
  "require_no_active_advisories": false,
  "require_signed_advisories": true
}

Development

git clone https://github.com/aixv-org/aixv.git
cd aixv
python3 -m venv .venv
. .venv/bin/activate
pip install -e '.[dev]'

Quality Gates

ruff check .
ruff format --check .
mypy src
pytest
python -m build