Here’s a quick, practical add-on for your pipelines: simple guardrails for AI‑assisted code so you don’t ship security/IP/license problems without slowing teams down.

---

# Why this matters (super short)

AI coding tools boost output but can introduce:

* **Security issues** (hardcoded secrets, unsafe APIs, prompt‑planted vulns)
* **IP leakage** (copied proprietary snippets)
* **License conflicts** (incompatible OSS brought by the model)

---

# Three fast checks (under ~1–3s per change)

1. **Secrets & Unsafe Patterns**

* Detect credentials, tokens, and high‑risk calls (e.g., weak crypto, eval/exec, SQL concat).
* Flag “new secrets introduced” vs “pre‑existing” to reduce noise.
* Require fix or approved suppression with evidence.

2. **Attribution & Similarity**

* Fuzzy match new/changed hunks against a vetted “allowlist” (your repos) and a “denylist” (company IP you can’t disclose).
* If similarity > threshold to denylist, block; if unknown origin, require justification note.

3. **License Hygiene (deps + snippets)**

* On dependency diffs, compute SBOM, resolve licenses, evaluate policy matrix (e.g., **OK**: MIT/BSD/Apache‑2.0; **Review**: MPL/LGPL; **Block**: GPL‑3.0 for closed components).
* For pasted code blocks > N lines, enforce “license/attribution comment” presence or ticket link proving provenance.

---

# Lightweight policy you can ship today

**Policy goals**

* Be **explainable** (every fail has a short reason + link to evidence)
* Be **configurable** per repo/env
* Support **override with audit** (who, why, for how long)

**Example (YAML)**

```yaml
stellaops:
  ai_code_guard:
    enabled: true
    thresholds:
      similarity_block: 0.92
      similarity_review: 0.80
      max_paste_lines_without_provenance: 12
    licenses:
      allow: [MIT, BSD-2-Clause, BSD-3-Clause, Apache-2.0]
      review: [MPL-2.0, LGPL-2.1, LGPL-3.0]
      block: [GPL-3.0-only, AGPL-3.0-only]
    checks:
      - id: secrets_scan
        required: true
      - id: unsafe_api_scan
        required: true
      - id: snippet_similarity
        required: true
      - id: dep_sbom_license
        required: true
    overrides:
      require_issue_link: true
      max_duration_days: 14
```

**Gate outcomes**

* ✅ **Pass**: merge/release continues
* 🟡 **Review**: needs approver with role `SecurityReviewer`
* ⛔ **Block**: only `SecurityOwner` can override with issue link + time‑boxed waiver

---

# Minimal evidence you store (per change)

* Hashes of changed hunks + similarity scores
* Secret/unsafe findings with line refs
* SBOM delta + license verdicts
* Override metadata (who/why/expiry)

This feeds Stella Ops’ **deterministic replay**: same inputs → same verdicts → audit‑ready.

---

# Drop‑in CI snippets

**GitHub Actions**

```yaml
jobs:
  ai-guard:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: stella-ops/cli-action@v1
        with:
          args: guard run --policy .stellaops.yml --format sarif --out guard.sarif
      - name: Upload SARIF
        uses: github/codeql-action/upload-sarif@v3
        with: { sarif_file: guard.sarif }
```

**GitLab CI**

```yaml
ai_guard:
  image: stellaops/cli:latest
  script:
    - stella guard run --policy .stellaops.yml --format gitlab --out guard.json
    - test "$(jq -r .status guard.json)" = "pass"
```

---

# Small UX that wins trust

* **Inline PR annotations** (secret types, API names, license rule hit)
* **One‑click “request waiver”** (requires ticket link + expiry)
* **Policy badges** in PR (“AI Code Guard: Pass / Review / Block”)

---

# How this plugs into Stella Ops

* **Scanner**: run the 3 checks; emit evidence (JSON + DSSE).
* **Policy/Lattice Engine**: combine verdicts (e.g., *Block if secrets OR block‑license; Review if similarity_review*).
* **Authority**: sign the gate result; attach to release attestation.
* **Replay**: store inputs + rule versions to reproduce decisions exactly.

If you want, I’ll turn this into:

* a ready‑to‑use **`.stellaops.yml`**,
* a **CLI subcommand spec** (`stella guard run`),
* and **UI wireframes** for the PR annotations + waiver flow.