# mattermost/mattermost — health index 100/100 (Exceptional)

> Inspection of the public repository mattermost/mattermost by inspect.software. It holds a health index of 100 out of 100, placing it in the Exceptional 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/mattermost/mattermost
- Report page: https://inspect.software/software/mattermost/mattermost
- Full JSON report: https://inspect.software/api/repositories/mattermost/mattermost/report
- Badge: https://raw.githubusercontent.com/inspect-software/badges/main/v1/m/mattermost/mattermost.svg
- Inspected: 2026-09-16
- Methodology: metrics 2.10.0, report schema 0.34.0 (https://inspect.software/methodology.md)

## Category summary

| Category | Weight | Index | Band |
|---|---|---|---|
| Vitality | 21% | 100/100 | Exceptional |
| Community & Adoption | 17% | 97/100 | Exceptional |
| Sustainability & Governance | 23% | 97/100 | Exceptional |
| Engineering Quality | 19% | 90/100 | Excellent |
| Security | 16% | 70/100 | Good |
| AI Readiness | 4% | 93/100 | Exceptional |

The weighted overall 92 is calibrated to 100 on the published index scale (record calibration 2026-08-02).

## Repository facts

| Field | Value |
|---|---|
| Description | Mattermost is an open source platform for secure collaboration across the entire software development lifecycle.. |
| Classification | library, web-ui, cli |
| Homepage | https://mattermost.com |
| Primary language | TypeScript |
| Stars | 39,073 |
| Forks | 8,998 |
| Created | 2015-06-15 |
| Last push | 2026-09-16 |
| Latest release | v10.11.24 |
| Commits (last year) | 2,005 |
| Bus factor | 9 |
| Topics | collaboration, mattermost, golang, react-native, hacktoberfest, monorepo, react |

## Published packages

| Registry | Package | Latest | Monthly downloads |
|---|---|---|---|
| go | github.com/mattermost/mattermost | v11.9.0+incompatible | — |
| npm | mattermost-api-reference | 0.0.1-security | 14 |

## Vitality — 100/100 (Exceptional)

Is the project alive — is code being written and are releases shipping? Weight: 21% of the overall index.

### Development activity — 100/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Push recency | met | 36 / 36 | last push 0 days ago |
| Commit cadence | met | 36 / 36 | 52/52 weeks with commits |
| Commit volume | met | 18 / 18 | 2005 commits in the last year |
| OpenSSF Scorecard: Maintained | met | 10 / 10 | 30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10 |

### Release discipline — 100/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Ships releases | met | 27 / 27 | 100 releases published |
| Release recency | met | 36 / 36 | latest release 0 days ago |
| Release cadence | met | 27 / 27 | a release every ~2.6 days |
| OpenSSF Scorecard: Signed-Releases | met | 10 / 10 | 5 out of the last 5 releases have a total of 5 signed artifacts. |

### Abandonment — 100/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Project is still maintained | met | 100 / 100 | last human commit 0 days ago |

## Community & Adoption — 97/100 (Exceptional)

Does the project have users, downloads, attention, and a welcoming setup for contributors? Weight: 17% of the overall index.

### Popularity & adoption — 100/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Stars | met | 60 / 60 | 39,073 stars |
| Forks | met | 25 / 25 | 8,998 forks |
| Watchers | met | 15 / 15 | 538 watchers |

### Community health — 94/100 (Exceptional)

| 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 | met | 13.5 / 13.5 | — |
| Issue template | met | 7.2 / 7.2 | — |
| PR template | met | 6.3 / 6.3 | — |

## Sustainability & Governance — 97/100 (Exceptional)

Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep? Weight: 23% of the overall index.

### Maintainer resilience (bus factor) — 98/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Bus factor | met | 54 / 54 | 9 contributor(s) cover half of all commits |
| Commit distribution | partial | 20.4 / 22.5 | top contributor authored 9% of commits |
| Contributor breadth | met | 13.5 / 13.5 | 98 contributors |
| OpenSSF Scorecard: Contributors | met | 10 / 10 | project has 46 contributing companies or organizations |

### Issue & PR responsiveness — 92/100 (Excellent)

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

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Issue resolution | partial | 39.3 / 42 | 94% of issues closed |
| PR acceptance | partial | 25.6 / 30 | 22674/26581 decided PRs merged |
| Newcomer PR acceptance | excluded | 0 / 13 | no first-time contributor's PR decided in 30d |
| OpenSSF Scorecard: Code-Review | met | 15 / 15 | all changesets reviewed |

### Ownership & stewardship — 100/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Ownership backing | met | 30 / 30 | organization-owned |
| Verified domain | met | 20 / 20 | — |
| Owner reach | partial | 24.6 / 25 | 2,605 followers of mattermost |
| Track record | met | 25 / 25 | 267 public repos, account ~11 yr old |

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

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Published & resolvable | met | 25 / 25 | 1 package(s) on go |
| Publish recency | met | 35 / 35 | latest publish 71 days ago |
| Version history | met | 20 / 20 | 982 published versions |
| Not deprecated | met | 20 / 20 | active, not deprecated or yanked |

## Engineering Quality — 90/100 (Excellent)

Are baseline engineering and documentation practices in place? Weight: 19% of the overall index.

### Engineering practices — 90/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| CI workflows | met | 24 / 24 | 50 workflow(s) |
| Tests present | met | 24 / 24 | — |
| Linter config | met | 16 / 16 | .eslintrc.json, .golangci.yml, eslint.config.mjs |
| Pre-commit hooks | not met | 0 / 9.6 | — |
| .editorconfig | met | 6.4 / 6.4 | — |
| OpenSSF Scorecard: CI-Tests | met | 20 / 20 | 30 out of 30 merged PRs checked by a CI test -- score normalized to 10 |

### Documentation — 90/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| README | met | 30 / 30 | — |
| Documentation directory | met | 25 / 25 | — |
| Documentation / homepage site | met | 15 / 15 | https://mattermost.com |
| Repository description | met | 10 / 10 | — |
| Topics | met | 10 / 10 | 7 topics |
| Wiki | not met | 0 / 10 | — |

## Security — 70/100 (Good)

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 — 73/100 (Good)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Binary-Artifacts | met | 7.5 / 7.5 | no binaries found in the repo |
| Branch-Protection | partial | 3 / 7.5 | branch protection is not maximal on development and all release branches |
| CI-Tests | met | 2.5 / 2.5 | 30 out of 30 merged PRs checked by a CI test -- score normalized to 10 |
| 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 46 contributing companies or organizations |
| Dangerous-Workflow | met | 10 / 10 | no 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 | partial | 2.2 / 2.5 | license file detected |
| Maintained | met | 7.5 / 7.5 | 30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10 |
| Packaging | met | 5 / 5 | packaging workflow detected |
| Pinned-Dependencies | partial | 3.5 / 5 | dependency not pinned by hash detected -- score normalized to 7 |
| SAST | met | 5 / 5 | SAST tool is run on all commits |
| Security-Policy | met | 5 / 5 | security policy file detected |
| Signed-Releases | met | 7.5 / 7.5 | 5 out of the last 5 releases have a total of 5 signed artifacts. |
| Token-Permissions | not met | 0 / 7.5 | detected GitHub workflow tokens with excessive permissions |
| Vulnerabilities | not met | 0 / 7.5 | 146 existing vulnerabilities detected |

### Dependency advisories — 57/100 (Moderate)

Excluded from scoring (no data or not applicable): Indirect dependencies free of known advisories. Remaining weights renormalized. Matched 2960 resolved dependencies against OSV; 780 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 | partial | 11.8 / 35 | 3 affected: yaml 2.1.1 (high 7.5), yaml 1.10.2 (moderate 4.3), golang.org/x/crypto v0.55.0 (unknown) |
| 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 | partial | 30.9 / 40 | 2 advisory-carrying package(s) unaddressed past 90 days; oldest published 1241 days ago |

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

1 resolved dependency(ies) are reported as malicious packages, but the registry no longer serves the resolved version, so nothing installable remains. Reported for the record and not scored.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| No dependency reported as a malicious package | met | 100 / 100 | 1 reported as malicious, but the registry no longer serves the resolved version — nothing installable remains |

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

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 — 93/100 (Exceptional)

How well is the repo equipped to be developed and maintained with AI coding agents? Carries a deliberately small weight: agent tooling is a real maintenance signal, but its absence must never gate the top of the scale (calibration saturates at raw 91, so 100/100 remains reachable with AI Readiness at zero).

### Agent context & guidance — 85/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Agent instructions | met | 45 / 45 | AGENTS.md, server/AGENTS.md, webapp/AGENTS.md |
| Machine-readable docs (llms.txt) | not met | 0 / 15 | — |
| Legible commit history | met | 40 / 40 | 80 of 83 human commits state their intent (structured subject or explanatory body) |

### Verify loop (build / test / typecheck) — 94/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| One-command bootstrap | met | 18 / 18 | api/Makefile, e2e-tests/Makefile, server/Makefile, server/public/Makefile, server/templates/Makefile, tools/mattermost-govet/Makefile, tools/mmgotool/Makefile, webapp/Makefile |
| Automated tests | met | 22 / 22 | — |
| Lint / format config | met | 11 / 11 | .eslintrc.json, .golangci.yml, eslint.config.mjs |
| Static type checking | met | 11 / 11 | .github/actions/save-junit-report-tms/tsconfig.json, docs/site/tsconfig.json, e2e-tests/cypress/tsconfig.json, e2e-tests/playwright/lib/tsconfig.json, e2e-tests/playwright/tsconfig.json, webapp/channels/tsconfig.json, webapp/platform/client/tsconfig.json, webapp/platform/components/tsconfig.json, webapp/platform/mattermost-redux/tsconfig.json, webapp/platform/shared/tsconfig.json, webapp/platform/types/tsconfig.json |
| Reproducible environment | met | 10 / 10 | Dockerfile, lockfile |
| Demonstrated agent practice | met | 10 / 10 | 51 of the last 100 commits agent-authored or agent-credited |
| Automated maintenance | partial | 5 / 8 | dependency automation configured, none observed in the sampled commits |
| OpenSSF Scorecard: Pinned-Dependencies | partial | 7 / 10 | dependency not pinned by hash detected -- score normalized to 7 |

### Code legibility for models — 99/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Type-checkable code | met | 45 / 45 | TypeScript (statically typed) |
| Manageable file sizes | partial | 54 / 55 | 146/8214 source files over 60KB |

### Machine-readable interfaces — 100/100 (Exceptional)

Excluded from scoring (no data or not applicable): API schema (OpenAPI/GraphQL/proto), MCP server. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| API schema (OpenAPI/GraphQL/proto) | excluded | 0 / 40 | not applicable to this kind of software |
| MCP server | excluded | 0 / 20 | not applicable to this kind of software |
| Runnable examples | met | 40 / 40 | examples, recipes, samples |

## Collection warnings

- Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
- Star history carried forward from 2026-07-21: GitHub restricted the stargazers API to repository admins, so it can no longer be collected. The repository has 39073 stars today.
- First-time contributor figures cover 12 of 19 authors (cap 12)
- npm package 'mattermost-api-reference' points at a different repository (npm/security-holder); excluded from ecosystem scoring
- Resolved dependency list truncated to 3000 of 3740 packages (counts remain complete)

## 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