# MetaMask/snaps — health index 86/100 (Excellent)

> Inspection of the public repository MetaMask/snaps by inspect.software. It holds a health index of 86 out of 100, placing it in the Excellent 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/MetaMask/snaps
- Report page: https://inspect.software/software/MetaMask/snaps
- Full JSON report: https://inspect.software/api/repositories/MetaMask/snaps/report
- Badge: https://raw.githubusercontent.com/inspect-software/badges/main/v1/m/MetaMask/snaps.svg
- Inspected: 2026-07-25
- Methodology: metrics 1.13.0, report schema 0.27.0 (https://inspect.software/methodology.md)

## Category summary

| Category | Weight | Index | Band |
|---|---|---|---|
| Vitality | 22% | 98/100 | Excellent |
| Community & Adoption | 18% | 85/100 | Excellent |
| Sustainability & Governance | 24% | 80/100 | Good |
| Engineering Quality | 20% | 94/100 | Excellent |
| Security | 16% | 68/100 | Moderate |
| AI Readiness | not counted | 73/100 | Good |

## Repository facts

| Field | Value |
|---|---|
| Description | Extend the functionality of MetaMask using Snaps |
| Homepage | https://metamask.io/snaps/ |
| Primary language | TypeScript |
| Stars | 844 |
| Forks | 656 |
| Created | 2021-01-26 |
| Last push | 2026-07-24 |
| Latest release | v164.0.0 |
| Commits (last year) | 352 |
| Bus factor | 2 |
| Topics | metamask, monorepo |

## Published packages

| Registry | Package | Latest | Monthly downloads |
|---|---|---|---|
| npm | @metamask/snaps-cli | 8.4.1 | 7,279 |
| npm | @metamask/snaps-sdk | 11.2.0 | 473,496 |
| npm | @metamask/snaps-jest | 10.2.0 | 2,590 |
| npm | @metamask/test-snaps | 3.5.2 | 66,209 |
| npm | @metamask/create-snap | 4.0.4 | 92 |
| npm | @metamask/snaps-utils | 12.4.0 | 484,863 |
| npm | @metamask/snaps-sandbox | 1.0.1 | 3,954 |
| npm | @metamask/snaps-simulation | 4.3.0 | 2,855 |

## Vitality — 98/100 (Excellent)

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

### Development activity — 96/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Push recency | met | 36 / 36 | last push 0 days ago |
| Commit cadence | partial | 32.5 / 36 | 47/52 weeks with commits |
| Commit volume | met | 18 / 18 | 352 commits in the last year |
| OpenSSF Scorecard: Maintained | met | 10 / 10 | 30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10 |

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

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

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Ships releases | met | 27 / 27 | 100 releases published |
| Release recency | met | 36 / 36 | latest release 11 days ago |
| Release cadence | met | 27 / 27 | a release every ~8.3 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 | last human commit 11 days ago |

## Community & Adoption — 85/100 (Excellent)

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

### Popularity & adoption — 81/100 (Good)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Stars | partial | 47.5 / 60 | 844 stars |
| Forks | partial | 23.5 / 25 | 656 forks |
| Watchers | partial | 10.4 / 15 | 74 watchers |

### Community health — 79/100 (Good)

| 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 | not met | 0 / 7.2 | — |
| PR template | not met | 0 / 6.3 | — |

### Ecosystem adoption (downloads) — 100/100 (Excellent)

Excluded from scoring (no data or not applicable): Registry dependents. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Monthly downloads | met | 80 / 80 | 1,041,338 downloads/month across npm |
| Registry dependents | excluded | 0 / 20 | not reported by this ecosystem |

## Sustainability & Governance — 80/100 (Good)

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) — 62/100 (Moderate)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Bus factor | partial | 25.2 / 54 | 2 contributor(s) cover half of all commits |
| Commit distribution | partial | 13.1 / 22.5 | top contributor authored 42% of commits |
| Contributor breadth | met | 13.5 / 13.5 | 51 contributors |
| OpenSSF Scorecard: Contributors | met | 10 / 10 | project has 19 contributing companies or organizations |

### Issue & PR responsiveness — 87/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Issue resolution | partial | 39 / 46.8 | 83% of issues closed |
| PR acceptance | partial | 32.6 / 38.2 | 2195/2576 decided PRs merged |
| OpenSSF Scorecard: Code-Review | met | 15 / 15 | all changesets reviewed |

### Ownership & stewardship — 80/100 (Good)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Ownership backing | met | 30 / 30 | organization-owned |
| Verified domain | not met | 0 / 20 | — |
| Owner reach | met | 25 / 25 | 6,033 followers of MetaMask |
| Track record | met | 25 / 25 | 631 public repos, account ~11 yr old |

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

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Published & resolvable | met | 25 / 25 | 8 package(s) on npm |
| Publish recency | met | 35 / 35 | latest publish 11 days ago |
| Version history | met | 20 / 20 | 122 published versions |
| Not deprecated | met | 20 / 20 | active, not deprecated or yanked |

## Engineering Quality — 94/100 (Excellent)

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

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

| Criterion | Status | Points | Detail |
|---|---|---|---|
| CI workflows | met | 24 / 24 | 9 workflow(s) |
| Tests present | met | 24 / 24 | — |
| Linter config | met | 16 / 16 | 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 — 100/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| README | met | 30 / 30 | — |
| Documentation directory | met | 25 / 25 | — |
| Documentation / homepage site | met | 15 / 15 | https://metamask.io/snaps/ |
| Repository description | met | 10 / 10 | — |
| Topics | met | 10 / 10 | 2 topics |
| Wiki | met | 10 / 10 | — |

## Security — 68/100 (Moderate)

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 — 68/100 (Moderate)

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

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Binary-Artifacts | partial | 6.8 / 7.5 | binaries present in source code |
| Branch-Protection | partial | 6 / 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 19 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 0 issue activity found in the last 90 days -- score normalized to 10 |
| 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 | met | 5 / 5 | SAST tool is run on all commits |
| Security-Policy | met | 5 / 5 | security policy file detected |
| Signed-Releases | excluded | 0 / 7.5 | no releases found |
| Token-Permissions | not met | 0 / 7.5 | detected GitHub workflow tokens with excessive permissions |
| Vulnerabilities | not met | 0 / 7.5 | 66 existing vulnerabilities detected |

### Dependency advisories — 68/100 (Moderate)

Matched the npm:@metamask/snaps-cli@8.4.1 runtime dependency closure — what installing the published package pulls in — 471 packages. 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 | partial | 6.7 / 25 | 4 affected: brace-expansion 1.1.16 (high 7.5), elliptic 6.6.1 (high 7.3), uuid 9.0.1 (high 7.5), +1 more |
| No advisories left outstanding | partial | 26.6 / 40 | 3 advisory-carrying package(s) unaddressed past 90 days; oldest published 197 days ago |

### 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 — 73/100 (Good)

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 — 85/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Agent instructions | met | 45 / 45 | AGENTS.md, CLAUDE.md |
| Machine-readable docs (llms.txt) | not met | 0 / 15 | — |
| Legible commit history | met | 40 / 40 | 54 of 54 human commits state their intent (structured subject or explanatory body) |

### Verify loop (build / test / typecheck) — 66/100 (Moderate)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| One-command bootstrap | not met | 0 / 18 | — |
| Automated tests | met | 22 / 22 | — |
| Lint / format config | met | 11 / 11 | eslint.config.mjs |
| Static type checking | met | 11 / 11 | packages/create-snap/tsconfig.json, packages/examples/packages/background-events/tsconfig.json, packages/examples/packages/bip32/tsconfig.json, packages/examples/packages/bip44/tsconfig.json, packages/examples/packages/client-status/tsconfig.json, packages/examples/packages/cronjob-duration/tsconfig.json, packages/examples/packages/cronjobs/tsconfig.json, packages/examples/packages/dialogs/tsconfig.json, packages/examples/packages/errors/tsconfig.json, packages/examples/packages/ethereum-provider/tsconfig.json, packages/examples/packages/ethers-js/tsconfig.json, packages/examples/packages/file-upload/tsconfig.json, packages/examples/packages/get-entropy/tsconfig.json, packages/examples/packages/get-file/tsconfig.json, packages/examples/packages/home-page/tsconfig.json, packages/examples/packages/images/tsconfig.json, packages/examples/packages/interactive-ui/tsconfig.json, packages/examples/packages/invoke-snap/packages/consumer-signer/tsconfig.json, packages/examples/packages/invoke-snap/packages/core-signer/tsconfig.json, packages/examples/packages/invoke-snap/tsconfig.json, packages/examples/packages/json-rpc/tsconfig.json, packages/examples/packages/jsx/tsconfig.json, packages/examples/packages/lifecycle-hooks/tsconfig.json, packages/examples/packages/localization/tsconfig.json, packages/examples/packages/manage-state/tsconfig.json, packages/examples/packages/multichain-provider/tsconfig.json, packages/examples/packages/name-lookup/tsconfig.json, packages/examples/packages/network-access/tsconfig.json, packages/examples/packages/notifications/tsconfig.json, packages/examples/packages/preferences/tsconfig.json, packages/examples/packages/preinstalled/tsconfig.json, packages/examples/packages/protocol/tsconfig.json, packages/examples/packages/rollup-plugin/tsconfig.json, packages/examples/packages/send-flow/tsconfig.json, packages/examples/packages/signature-insights/tsconfig.json, packages/examples/packages/transaction-insights/tsconfig.json, packages/examples/packages/wasm/assembly/tsconfig.json, packages/examples/packages/wasm/tsconfig.json, packages/examples/packages/webpack-plugin/tsconfig.json, packages/examples/tsconfig.json, packages/snaps-cli/tsconfig.json, packages/snaps-controllers/tsconfig.json, packages/snaps-execution-environments/tsconfig.json, packages/snaps-jest/tsconfig.json, packages/snaps-rollup-plugin/tsconfig.json, packages/snaps-rpc-methods/tsconfig.json, packages/snaps-sandbox/tsconfig.json, packages/snaps-sdk/tsconfig.json, packages/snaps-simulation/tsconfig.json, packages/snaps-utils/tsconfig.json, packages/snaps-webpack-plugin/tsconfig.json, packages/test-snaps/tsconfig.json, tsconfig.json |
| Reproducible environment | met | 10 / 10 | lockfile |
| Demonstrated agent practice | partial | 4 / 10 | 2 of the last 100 commits agent-authored or agent-credited |
| Automated maintenance | met | 8 / 8 | 46 of the last 100 commits are automated dependency updates |
| OpenSSF Scorecard: Pinned-Dependencies | not met | 0 / 10 | dependency not pinned by hash detected -- score normalized to 0 |

### Code legibility for models — 100/100 (Excellent)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Type-checkable code | met | 45 / 45 | TypeScript (statically typed) |
| Manageable file sizes | partial | 54.8 / 55 | 4/1389 source files over 60KB |

### Machine-readable interfaces — 40/100 (At risk)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| API schema (OpenAPI/GraphQL/proto) | not met | 0 / 40 | — |
| 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

## 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