| --- |
| license: other |
| license_name: all-rights-reserved |
| license_link: LICENSE |
| pretty_name: GrantBench |
| language: |
| - en |
| - ja |
| tags: |
| - security |
| - ai-agents |
| - mcp |
| - github-actions |
| - kubernetes |
| - terraform |
| - benchmark |
| configs: |
| - config_name: default |
| data_files: |
| - split: dev |
| path: data/dev.jsonl |
| - split: dev_ext |
| path: data/dev_ext.jsonl |
| --- |
| |
| # GrantBench (development splits) |
|
|
| GrantBench is the benchmark used to evaluate **GrantLock**, a lockfile for *who an AI agent stack runs as* |
| (API keys, OAuth grants, service accounts, MCP server secrets, CI tokens, cloud roles and their scopes) |
| with a CI gate on semantic changes to those grants. Each case is a small repository snapshot. |
|
|
| - `planted`: a risk of one class G1–G8 planted into a least-privilege repository (snapshots `repo/`, and |
| for `dev-ext` also `base/` = the reviewed state before the change) |
| - `clean`: a least-privilege, fully declared repository (for false-positive measurement) |
| - `diff_pair`: `before/` and `after/` snapshots with the expected set of classes |
|
|
| Classes: G1 inline secret value · G2 scope added to an existing identity · G3 wildcard / admin grant · |
| G4 identity without an owner · G5 identity shared by several components · G6 long-lived static key where |
| federation is available · G7 new undeclared identity · G8 dormant grant. |
|
|
| ## Splits |
|
|
| | Split | Cases | Surfaces | corpus_sha256 | |
| |---|---|---|---| |
| | `dev` | 120 (planted 80, clean 24, diff_pair 16) | MCP configs, GitHub Actions, `.env` | `806d821b43fe1813f21d0c7dded45e2b5871b50426a012fd791dbf5627aeae76` | |
| | `dev_ext` | 68 (planted 48, clean 12, diff_pair 8) | docker-compose, Kubernetes, Terraform | `0f5582ee1642557f779b93444f6c5653f15cb92359aa6bcfc1d37352c0244a8d` | |
| |
| Each row holds the case metadata (`case_id`, `kind`, `lang`, `planted`, `expected_labels`, `description`) |
| and `snapshots`: for every snapshot directory (in `dev`, `repo/` and `after/` include the committed `grantlock.json` generated from the reviewed state), the list of files with path, size, SHA-256 and content. |
| All secret-like strings are invalid dummies that contain the marker `FAKE`. `dev` dummies imitate only |
| the prefix of real formats; `dev_ext` dummies follow the real formats (prefix, length, alphabet). |
|
|
| **Sealed holdout corpora are not part of this dataset** (neither holdout v1 nor v2). |
|
|
| ## Results (GrantLock and baselines) |
|
|
| | Corpus | GrantLock G1–G8 recall | Clean false positives | Diff accuracy | gitleaks G1 | trufflehog G1 | Baselines G2–G8 | |
| |---|---|---|---|---|---|---| |
| | `dev` (frozen) | 10/10 for every class | 0/24 | 16/16 | 6/10 | 7/10 | 0/10 per class | |
| | `dev_ext` | 6/6 for every class | 0/12 | 8/8 | 5/6 | 6/6 | 0 | |
|
|
| The development splits were generated by the same author who wrote the detector; treat these numbers as |
| consistency checks, not as evidence of performance on configurations written by someone else. |
|
|
| ### Gate history (sealed holdouts by independent authors, not included here) |
|
|
| Pre-registered bar (GATE 2): recall on G2, G3, G7 each ≥ 80% and mean ≥ 90%; clean false positives ≤ 5%. |
|
|
| | Step | Result | Outcome | |
| |---|---|---| |
| | Holdout v1 | G2 6/7, G3 5/7, G7 8/8 (mean 85.7%); clean false positives 0/16 | Fail (recall) | |
| | Fix round 1 | Four blind spots fixed | — | |
| | Holdout v2 | G2 7/8, G3 7/8, G7 8/8 (mean 91.7%); G1 6/8 (one detector exception); clean false positives 5/16; baselines G1 5/8 each, G2–G8 0 | Fail (false positives) | |
| | Fix round 2 | The compose rule behind all five false positives narrowed; format-table / schema mismatch fixed | — | |
| | Re-verification on disclosed v2 (not a gate) | Clean false positives 0/16, G1 7/8, diff 8/8; G2, G3, G7 unchanged | not a pass | |
|
|
| **The pre-registered GATE 2 has not been passed.** |
|
|
| ## License |
|
|
| Copyright © 2026 NagaYu. All Rights Reserved. Published for evaluation only; no license to use, copy, |
| modify or distribute is granted (see `LICENSE`). Licensing or transfer inquiries: |
| https://nagayu-portfolio.nagayu.workers.dev/en |
|
|
