# GuillaumeLessard/qector-decoder — health index 51/100 (Moderate)

> Inspection of the public repository GuillaumeLessard/qector-decoder by inspect.software. It holds a health index of 51 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/GuillaumeLessard/qector-decoder
- Report page: https://inspect.software/software/GuillaumeLessard/qector-decoder
- Full JSON report: https://inspect.software/api/repositories/GuillaumeLessard/qector-decoder/report
- Badge: https://raw.githubusercontent.com/inspect-software/badges/main/v1/g/GuillaumeLessard/qector-decoder.svg
- Inspected: 2026-07-22
- Methodology: metrics 1.13.0, report schema 0.26.0 (https://inspect.software/methodology.md)

## Category summary

| Category | Weight | Index | Band |
|---|---|---|---|
| Vitality | 22% | 69/100 | Moderate |
| Community & Adoption | 18% | 33/100 | At risk |
| Sustainability & Governance | 24% | 34/100 | At risk |
| Engineering Quality | 20% | 72/100 | Good |
| Security | 16% | 47/100 | At risk |
| AI Readiness | not counted | 58/100 | Moderate |

## Repository facts

| Field | Value |
|---|---|
| Description | Production-grade Rust/Python quantum error correction decoder. 25+ decoder families: MWPM Blossom, Union-Find, BP-OSD, LDPC/qLDPC, belief-matching, CUDA/GPU batch decoding, AutoDecoder 7-tier fallback. PyMatching/Stim/Sinter compatible. Ed25519 license verification. Benchmark evidence included. |
| Homepage | https://qector.store |
| Primary language | Python |
| Stars | 3 |
| Forks | 0 |
| Created | 2026-06-24 |
| Last push | 2026-07-22 |
| Latest release | v0.6.7 |
| Commits (last year) | 128 |
| Bus factor | 1 |
| Topics | decoder, mwpm, python, rust-lang, union-find, qector, cuda, ldpc-bp-decoder, pymatching, qec, stim, belief-propagation, blossom, error-correction, gpu-acceleration, hpc, quantum-computing, simulation, surface-code |

## Published packages

| Registry | Package | Latest | Monthly downloads |
|---|---|---|---|
| pypi | qector-decoder-v3 | 0.6.6 | — |

## Vitality — 69/100 (Moderate)

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

### Development activity — 57/100 (Moderate)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Push recency | met | 36 / 36 | last push 0 days ago |
| Commit cadence | partial | 2.8 / 36 | 4/52 weeks with commits |
| Commit volume | met | 18 / 18 | 128 commits in the last year |
| OpenSSF Scorecard: Maintained | not met | 0 / 10 | project was created within the last 90 days. Please review its contents carefully |

### Release discipline — 88/100 (Excellent)

Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Signed-Releases. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Ships releases | partial | 16.2 / 27 | 18 version tags (no GitHub releases) |
| Release recency | met | 36 / 36 | latest release 0 days ago |
| Release cadence | met | 27 / 27 | a release every ~2.3 days |
| OpenSSF Scorecard: Signed-Releases | excluded | 0 / 10 | no releases found |

### 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 — 33/100 (At risk)

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

### Popularity & adoption — 5/100 (Critical)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Stars | partial | 4.9 / 60 | 3 stars |
| Forks | not met | 0 / 25 | 0 forks |
| Watchers | not met | 0 / 15 | 1 watchers |

### Community health — 64/100 (Moderate)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| README | met | 22.5 / 22.5 | — |
| License | partial | 16.9 / 22.5 | license file present, not a recognized license |
| 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 — 34/100 (At risk)

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) — 15/100 (Critical)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Bus factor | partial | 9 / 54 | 1 contributor(s) cover half of all commits |
| Commit distribution | partial | 0.3 / 22.5 | top contributor authored 99% of commits |
| Contributor breadth | partial | 2.7 / 13.5 | 2 contributors |
| OpenSSF Scorecard: Contributors | partial | 3 / 10 | project has 1 contributing companies or organizations -- score normalized to 3 |

### Issue & PR responsiveness — 1/100 (Critical)

Excluded from scoring (no data or not applicable): Issue resolution, PR acceptance. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Issue resolution | excluded | 0 / 46.8 | no issues or no data |
| PR acceptance | excluded | 0 / 38.2 | no decided pull requests or no data |
| OpenSSF Scorecard: Code-Review | not met | 0 / 15 | Found 0/30 approved changesets -- score normalized to 0 |

### Ownership & stewardship — 36/100 (At risk)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Ownership backing | met | 30 / 30 | organization-owned |
| Verified domain | not met | 0 / 20 | — |
| Owner reach | partial | 2.2 / 25 | 1 followers of GuillaumeLessard |
| Track record | partial | 3.6 / 25 | 2 public repos, account ~0 yr old |

### Package maintenance — 100/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Published & resolvable | met | 25 / 25 | 1 package(s) on pypi |
| Publish recency | met | 35 / 35 | latest publish 10 days ago |
| Version history | met | 20 / 20 | 18 published versions |
| Not deprecated | met | 20 / 20 | active, not deprecated or yanked |

## Engineering Quality — 72/100 (Good)

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

### Engineering practices — 60/100 (Moderate)

Excluded from scoring (no data or not applicable): OpenSSF Scorecard: CI-Tests. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| CI workflows | met | 24 / 24 | 2 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 | excluded | 0 / 20 | no pull request found |

### Documentation — 90/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| README | met | 30 / 30 | — |
| Documentation directory | met | 25 / 25 | — |
| Documentation / homepage site | met | 15 / 15 | https://qector.store |
| Repository description | met | 10 / 10 | — |
| Topics | met | 10 / 10 | 19 topics |
| Wiki | not met | 0 / 10 | — |

## Security — 47/100 (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): CI-Tests, Dangerous-Workflow, Packaging, Pinned-Dependencies, SAST, Signed-Releases, Token-Permissions. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Binary-Artifacts | met | 7.5 / 7.5 | no binaries found in the repo |
| Branch-Protection | not met | 0 / 7.5 | branch protection not enabled on development/release branches |
| CI-Tests | excluded | 0 / 2.5 | no pull request found |
| CII-Best-Practices | not met | 0 / 2.5 | no effort to earn an OpenSSF best practices badge detected |
| Code-Review | not met | 0 / 7.5 | Found 0/30 approved changesets -- score normalized to 0 |
| Contributors | partial | 0.8 / 2.5 | project has 1 contributing companies or organizations -- score normalized to 3 |
| Dangerous-Workflow | excluded | 0 / 10 | internal error: internal error: invalid GitHub workflow: :254:0: could not parse as YAML: could not find expected ':' [syntax-check] |
| Dependency-Update-Tool | not met | 0 / 7.5 | no update tool detected |
| Fuzzing | not met | 0 / 5 | project is not fuzzed |
| License | partial | 2.2 / 2.5 | license file detected |
| Maintained | not met | 0 / 7.5 | project was created within the last 90 days. Please review its contents carefully |
| Packaging | excluded | 0 / 5 | internal error: internal error: invalid GitHub workflow: :254:0: could not parse as YAML: could not find expected ':' [syntax-check] |
| Pinned-Dependencies | excluded | 0 / 5 | internal error: internal error: invalid GitHub workflow: :254:0: could not parse as YAML: could not find expected ':' [syntax-check] |
| SAST | excluded | 0 / 5 | internal error: internal error: invalid GitHub workflow: :254:0: could not parse as YAML: could not find expected ':' [syntax-check] |
| Security-Policy | met | 5 / 5 | security policy file detected |
| Signed-Releases | excluded | 0 / 7.5 | no releases found |
| Token-Permissions | excluded | 0 / 7.5 | internal error: internal error: invalid GitHub workflow: :254:0: could not parse as YAML: could not find expected ':' [syntax-check] |
| Vulnerabilities | partial | 6 / 7.5 | 2 existing vulnerabilities detected |

### Dependency advisories — 100/100 (Excellent)

Excluded from scoring (no data or not applicable): Indirect dependencies free of known advisories, No advisories left outstanding. Remaining weights renormalized. Matched 247 resolved dependencies against OSV; 21 could not be assessed (no resolved version, an unsupported ecosystem, or beyond the reported package list). This repository publishes no package the index resolves, so the repository dependency graph was assessed instead. That graph mixes development and test pins with shipped dependencies, so only the declared runtime dependencies are scored; transitive findings are reported as context and excluded from the score. Reachability is not analyzed.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Direct dependencies free of known advisories | met | 35 / 35 | no direct dependency carries a known advisory |
| Indirect dependencies free of known advisories | excluded | 0 / 25 | transitive set not separable from development and test dependencies in this scope |
| No advisories left outstanding | excluded | 0 / 40 | no advisory carries a publication date |

### Malicious dependencies — 100/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| No dependency reported as a malicious package | met | 100 / 100 | no dependency is reported as a malicious package |

### 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 — 58/100 (Moderate)

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 — 30/100 (At risk)

| 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 | partial | 29.9 / 40 | 56 of 100 human commits state their intent (structured subject or explanatory body) |

### Verify loop (build / test / typecheck) — 62/100 (Moderate)

Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Pinned-Dependencies. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| One-command bootstrap | partial | 12.6 / 18 | Cargo.toml (toolchain convention, no task runner) |
| Automated tests | met | 22 / 22 | — |
| Lint / format config | not met | 0 / 11 | — |
| Static type checking | met | 11 / 11 | python/qector_decoder_v3/py.typed |
| Reproducible environment | met | 10 / 10 | Dockerfile, lockfile |
| Demonstrated agent practice | not met | 0 / 10 | no agent-authored commits among the last 100 |
| Automated maintenance | not met | 0 / 8 | no automated dependency updates observed |
| OpenSSF Scorecard: Pinned-Dependencies | excluded | 0 / 10 | internal error: internal error: invalid GitHub workflow: :254:0: could not parse as YAML: could not find expected ':' [syntax-check] |

### Code legibility for models — 82/100 (Good)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Type-checkable code | partial | 27 / 45 | Python with type-check config (python/qector_decoder_v3/py.typed) |
| Manageable file sizes | partial | 54.5 / 55 | 2/213 source files over 60KB |

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

| Criterion | Status | Points | Detail |
|---|---|---|---|
| API schema (OpenAPI/GraphQL/proto) | met | 40 / 40 | proto/qector.proto |
| MCP server | not met | 0 / 20 | — |
| Runnable examples | met | 40 / 40 | examples |

## Collection warnings

- Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
- Could not fetch crates package 'qector_decoder_v3' from its registry
- deps.dev does not index pypi:qector-decoder-v3@0.6.6; advisories assessed against the repository dependency graph instead

## 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