# mighty-gerbils/gerbil — health index 58/100 (Moderate)

> Inspection of the public repository mighty-gerbils/gerbil by inspect.software. It holds a health index of 58 out of 100, placing it in the Moderate band. The index is a signal derived from publicly visible practice, not a warranty, a security audit, or an endorsement, and it is independent of payment.

- Repository: https://github.com/mighty-gerbils/gerbil
- Report page: https://inspect.software/software/mighty-gerbils/gerbil
- Full JSON report: https://inspect.software/api/repositories/mighty-gerbils/gerbil/report
- Badge: https://raw.githubusercontent.com/inspect-software/badges/main/v1/m/mighty-gerbils/gerbil.svg
- Inspected: 2026-07-19
- Methodology: metrics 1.13.0, report schema 0.14.0 (https://inspect.software/methodology.md)

## Category summary

| Category | Weight | Index | Band |
|---|---|---|---|
| Vitality | 22% | 51/100 | Moderate |
| Community & Adoption | 18% | 73/100 | Good |
| Sustainability & Governance | 24% | 56/100 | Moderate |
| Engineering Quality | 20% | 74/100 | Good |
| Security | 16% | 34/100 | At risk |
| AI Readiness | not counted | 42/100 | At risk |

## Repository facts

| Field | Value |
|---|---|
| Description | Gerbil Scheme |
| Homepage | https://cons.io |
| Primary language | Scheme |
| License | LGPL-2.1 |
| Stars | 1,262 |
| Forks | 119 |
| Created | 2016-01-29 |
| Last push | 2026-05-02 |
| Latest release | v0.18.2 |
| Commits (last year) | 13 |
| Bus factor | 1 |
| Topics | gerbil, gambit, scheme, gerbil-scheme |

## Vitality — 51/100 (Moderate)

Is the project alive — is code being written and are releases shipping? Weight: 22% of the overall index.

### Development activity — 40/100 (At risk)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Push recency | partial | 18 / 36 | last push 77 days ago |
| Commit cadence | partial | 6.2 / 36 | 9/52 weeks with commits |
| Commit volume | partial | 10.3 / 18 | 13 commits in the last year |
| OpenSSF Scorecard: Maintained | partial | 5 / 10 | 1 commit(s) and 5 issue activity found in the last 90 days -- score normalized to 5 |

### Release discipline — 67/100 (Moderate)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Ships releases | met | 27 / 27 | 20 releases published |
| Release recency | partial | 27 / 36 | latest release 106 days ago |
| Release cadence | partial | 12.6 / 27 | a release every ~307.3 days |
| OpenSSF Scorecard: Signed-Releases | not met | 0 / 10 | Project has not signed or included provenance with any releases. |

### Abandonment — 100/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Project is still maintained | met | 100 / 100 | maintenance record not established from the collected data |

## Community & Adoption — 73/100 (Good)

Does the project have users, downloads, attention, and a welcoming setup for contributors? Weight: 18% of the overall index.

### Popularity & adoption — 76/100 (Good)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Stars | partial | 50.3 / 60 | 1,262 stars |
| Forks | partial | 17.3 / 25 | 119 forks |
| Watchers | partial | 8.4 / 15 | 34 watchers |

### Community health — 70/100 (Good)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| README | met | 22.5 / 22.5 | — |
| License | met | 22.5 / 22.5 | recognized license (LGPL-2.1) |
| CONTRIBUTING guide | met | 18 / 18 | — |
| Code of conduct | not met | 0 / 13.5 | — |
| Issue template | not met | 0 / 7.2 | — |
| PR template | not met | 0 / 6.3 | — |

## Sustainability & Governance — 56/100 (Moderate)

Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep? Weight: 24% of the overall index.

### Maintainer resilience (bus factor) — 36/100 (At risk)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Bus factor | partial | 9 / 54 | 1 contributor(s) cover half of all commits |
| Commit distribution | partial | 3.8 / 22.5 | top contributor authored 83% of commits |
| Contributor breadth | met | 13.5 / 13.5 | 74 contributors |
| OpenSSF Scorecard: Contributors | met | 10 / 10 | project has 13 contributing companies or organizations |

### Issue & PR responsiveness — 80/100 (Good)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Issue resolution | partial | 29.5 / 46.8 | 63% of issues closed |
| PR acceptance | partial | 35 / 38.2 | 931/1017 decided PRs merged |
| OpenSSF Scorecard: Code-Review | met | 15 / 15 | all changesets reviewed |

### Ownership & stewardship — 56/100 (Moderate)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Ownership backing | met | 30 / 30 | organization-owned |
| Verified domain | not met | 0 / 20 | — |
| Owner reach | partial | 11.2 / 25 | 35 followers of mighty-gerbils |
| Track record | partial | 15 / 25 | 18 public repos, account ~2 yr old |

## Engineering Quality — 74/100 (Good)

Are baseline engineering and documentation practices in place? Weight: 20% of the overall index.

### Engineering practices — 56/100 (Moderate)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| CI workflows | met | 24 / 24 | 3 workflow(s) |
| Tests present | met | 24 / 24 | — |
| Linter config | not met | 0 / 16 | — |
| Pre-commit hooks | not met | 0 / 9.6 | — |
| .editorconfig | not met | 0 / 6.4 | — |
| OpenSSF Scorecard: CI-Tests | partial | 8 / 20 | 13 out of 30 merged PRs checked by a CI test -- score normalized to 4 |

### Documentation — 100/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| README | met | 30 / 30 | — |
| Documentation directory | met | 25 / 25 | — |
| Documentation / homepage site | met | 15 / 15 | https://cons.io |
| Repository description | met | 10 / 10 | — |
| Topics | met | 10 / 10 | 4 topics |
| Wiki | met | 10 / 10 | — |

## Security — 34/100 (At risk)

Are visible security and supply-chain practices strong, with no malicious dependency and no unresolved high-risk jurisdiction exposure? Weight: 16% of the overall index.

### Security posture — 34/100 (At risk)

Excluded from scoring (no data or not applicable): Branch-Protection, Packaging. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Binary-Artifacts | partial | 6.8 / 7.5 | binaries present in source code |
| Branch-Protection | excluded | 0 / 7.5 | internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md |
| CI-Tests | partial | 1 / 2.5 | 13 out of 30 merged PRs checked by a CI test -- score normalized to 4 |
| CII-Best-Practices | not met | 0 / 2.5 | no effort to earn an OpenSSF best practices badge detected |
| Code-Review | met | 7.5 / 7.5 | all changesets reviewed |
| Contributors | met | 2.5 / 2.5 | project has 13 contributing companies or organizations |
| Dangerous-Workflow | not met | 0 / 10 | dangerous workflow patterns detected |
| Dependency-Update-Tool | met | 7.5 / 7.5 | update tool detected |
| Fuzzing | not met | 0 / 5 | project is not fuzzed |
| License | met | 2.5 / 2.5 | license file detected |
| Maintained | partial | 3.8 / 7.5 | 1 commit(s) and 5 issue activity found in the last 90 days -- score normalized to 5 |
| Packaging | excluded | 0 / 5 | packaging workflow not detected |
| Pinned-Dependencies | not met | 0 / 5 | dependency not pinned by hash detected -- score normalized to 0 |
| SAST | not met | 0 / 5 | SAST tool is not run on all commits -- score normalized to 0 |
| Security-Policy | not met | 0 / 5 | security policy file not detected |
| Signed-Releases | not met | 0 / 7.5 | Project has not signed or included provenance with any releases. |
| Token-Permissions | not met | 0 / 7.5 | detected GitHub workflow tokens with excessive permissions |
| Vulnerabilities | not met | 0 / 7.5 | 125 existing vulnerabilities detected |

### High-Risk Jurisdiction Exposure — 100/100 (Excellent)

Only high-confidence self-published location evidence affects this multiplier. Ambiguous matches are review-only; country evidence is not proof of nationality, citizenship, legal registration, malicious intent, or sanctions status.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Policy exposure multiplier | met | 100 / 100 | no confirmed policy-scope location match |

## AI Readiness — 42/100 (At risk)

How well is the repo equipped to be developed and maintained with AI coding agents? An independent, experimental badge — weight 0.0, so it is surfaced on its own and does not affect the overall health score.

### Agent context & guidance — 1/100 (Critical)

Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Agent instructions | not met | 0 / 45 | no CLAUDE.md / AGENTS.md / editor rules |
| Machine-readable docs (llms.txt) | not met | 0 / 15 | — |
| Legible commit history | excluded | 0 / 40 | no data |

### Verify loop (build / test / typecheck) — 61/100 (Moderate)

Excluded from scoring (no data or not applicable): Demonstrated agent practice, Automated maintenance. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| One-command bootstrap | met | 18 / 18 | Makefile, dist/Makefile, dist/docker/Makefile, dist/podman/Makefile, src/gambit/lib/_base64/makefile, src/gambit/lib/_csv/makefile, src/gambit/lib/_define-library/makefile, src/gambit/lib/_digest/makefile, src/gambit/lib/_geiser/makefile, src/gambit/lib/_git/makefile, src/gambit/lib/_hamt/makefile, src/gambit/lib/_hamt/primitive-hamt/makefile, src/gambit/lib/_http/makefile, src/gambit/lib/_irregex/makefile, src/gambit/lib/_json/makefile, src/gambit/lib/_match/makefile, src/gambit/lib/_pkg/makefile, src/gambit/lib/_six/makefile, src/gambit/lib/_tar/makefile, src/gambit/lib/_test/makefile, src/gambit/lib/_uri/makefile, src/gambit/lib/_zlib/makefile, src/gambit/lib/gambit/boolean/makefile, src/gambit/lib/gambit/char/makefile, src/gambit/lib/gambit/env-vars/makefile, src/gambit/lib/gambit/list/makefile, src/gambit/lib/gambit/makefile, src/gambit/lib/gambit/parameter/makefile, src/gambit/lib/gambit/prim/makefile, src/gambit/lib/gambit/procedure/makefile, src/gambit/lib/gambit/process/makefile, src/gambit/lib/gambit/promise/makefile, src/gambit/lib/gambit/random/makefile, src/gambit/lib/gambit/string/makefile, src/gambit/lib/gambit/symkey/makefile, src/gambit/lib/gambit/unstable/makefile, src/gambit/lib/gambit/vector/makefile, src/gambit/lib/scheme/base/makefile, src/gambit/lib/scheme/case-lambda/makefile, src/gambit/lib/scheme/char/makefile, src/gambit/lib/scheme/complex/makefile, src/gambit/lib/scheme/cxr/makefile, src/gambit/lib/scheme/eval/makefile, src/gambit/lib/scheme/file/makefile, src/gambit/lib/scheme/inexact/makefile, src/gambit/lib/scheme/lazy/makefile, src/gambit/lib/scheme/load/makefile, src/gambit/lib/scheme/makefile, src/gambit/lib/scheme/process-context/makefile, src/gambit/lib/scheme/r5rs/makefile, src/gambit/lib/scheme/read/makefile, src/gambit/lib/scheme/repl/makefile, src/gambit/lib/scheme/time/makefile, src/gambit/lib/scheme/write/makefile, src/gambit/lib/srfi/0/makefile, src/gambit/lib/srfi/1/makefile, src/gambit/lib/srfi/111/makefile, src/gambit/lib/srfi/115/makefile, src/gambit/lib/srfi/124/makefile, src/gambit/lib/srfi/13/makefile, src/gambit/lib/srfi/132/makefile, src/gambit/lib/srfi/14/makefile, src/gambit/lib/srfi/141/makefile, src/gambit/lib/srfi/151/makefile, src/gambit/lib/srfi/158/makefile, src/gambit/lib/srfi/179/makefile, src/gambit/lib/srfi/19/makefile, src/gambit/lib/srfi/193/makefile, src/gambit/lib/srfi/2/makefile, src/gambit/lib/srfi/219/makefile, src/gambit/lib/srfi/23/makefile, src/gambit/lib/srfi/231/makefile, src/gambit/lib/srfi/26/makefile, src/gambit/lib/srfi/27/makefile, src/gambit/lib/srfi/28/makefile, src/gambit/lib/srfi/31/makefile, src/gambit/lib/srfi/33/makefile, src/gambit/lib/srfi/4/makefile, src/gambit/lib/srfi/41/makefile, src/gambit/lib/srfi/42/makefile, src/gambit/lib/srfi/45/makefile, src/gambit/lib/srfi/48/makefile, src/gambit/lib/srfi/5/makefile, src/gambit/lib/srfi/6/makefile, src/gambit/lib/srfi/64/makefile, src/gambit/lib/srfi/69/makefile, src/gambit/lib/srfi/8/makefile, src/gambit/lib/srfi/9/makefile, src/gambit/lib/srfi/makefile, src/gambit/lib/termite/makefile, src/gambit/lib/termite/otp/makefile, src/tutorial/ensemble/Makefile |
| Automated tests | met | 22 / 22 | — |
| Lint / format config | not met | 0 / 11 | — |
| Static type checking | not met | 0 / 11 | — |
| Reproducible environment | met | 10 / 10 | Dockerfile, lockfile |
| Demonstrated agent practice | excluded | 0 / 10 | no data |
| Automated maintenance | excluded | 0 / 8 | no data |
| OpenSSF Scorecard: Pinned-Dependencies | not met | 0 / 10 | dependency not pinned by hash detected -- score normalized to 0 |

### Code legibility for models — 35/100 (At risk)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Type-checkable code | not met | 0 / 45 | Scheme without a type-check config |
| Manageable file sizes | partial | 35.1 / 55 | 59/163 source files over 60KB |

### Machine-readable interfaces — 80/100 (Good)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| API schema (OpenAPI/GraphQL/proto) | met | 40 / 40 | src/std/protobuf/potpourri-test.proto, src/std/protobuf/potpourri-test2.proto |
| MCP server | not met | 0 / 20 | — |
| Runnable examples | met | 40 / 40 | example, examples |

## Collection warnings

- Could not fetch npm package 'gerbil-docs' from its registry

## What this report is

inspect.software measures public repositories against a single published, versioned methodology and reports the result as a 1–100 health index. Findings are signals derived from what is visible in public repository data — they are not a security audit, a warranty, or an endorsement, and no result depends on payment.

- Methodology, formulas and weights: https://inspect.software/methodology.md
- What a result does and does not claim: https://inspect.software/wiki/signals-not-warranties.md
- Rating bands: https://inspect.software/wiki/scoring-bands.md
- Corrections: https://inspect.software/contact.md
- Index of all documents: https://inspect.software/llms.txt