Public record
Software health reportschema 0.11.0 · metrics 2.10.0 · 2026-07-16 11:38 UTC

coder / cmux

A desktop app for isolated, parallel agentic development

TypeScriptAGPL-3.0★ 1,914 stars⑂ 121 forkssince Sep 2025View on GitHub ↗
KindNetwork serviceWeb interfaceCommand-line toolhow this is determined

coder/cmux holds a health index of 83 out of 100, placing it in the Excellent band. It scores highest on Vitality (96/100) and lowest on Security (1/100). It was last updated today. 2 contributors account for most of its recent work.

83
overall / 100
Excellent

Software health index

Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean, calibrated against the distribution of the public record so bands carry percentile meaning; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At Risk ceiling of 34.

83
Exceptional93-100The record's top tier (≈ top 5%); essentially all checked criteria met
Excellent80-92Strong across the board; minor gaps
Good65-79Healthy; gaps are limited and manageable
Moderate50-64Acceptable with notable gaps; review recommended
Weak35-49Material weaknesses across several areas
At Risk20-34Significant weaknesses; adoption warrants caution
Critical1-19Severe problems (abandoned, single-maintainer, no hygiene)
VitalityCommunity &AdoptionSustainability &GovernanceEngineeringQualitySecurityAI Readiness

Score profile

Each axis is a category. The shape matters more than the average — a healthy subject fills the whole shape, while a spike-and-crater profile means strength in one dimension is masking risk in another.

The weighted overall 70 is calibrated to 83 on the published index scale (record calibration 2026-08-02).

Ownership

CoderOrganization
2,570 followers232 public repossince Dec 2021

This repository is backed by an organization — shared, accountable stewardship that can outlive any single maintainer.

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publish
npmmuxpoints to another repo — not scored0.28.038,0112,7065 days ago

Metrics by category

Vitality

Is the project alive — is code being written and are releases shipping?

96Exceptional · 21% of overall
How it's scored
36/36Push recencylast push 0 days ago
30.5/36Commit cadence44/52 weeks with commits
18/18Commit volume3,403 commits in the last year
0/10OpenSSF Scorecard: Maintainedno data
Inputs used
commits_last_year3,403
human_commit_share
days_since_last_push0
active_weeks_last_year44

Release discipline

100Exceptional
How it's scored
27/27Ships releases63 releases published
36/36Release recencylatest release 0 days ago
27/27Release cadencea release every ~10.1 days
0/10OpenSSF Scorecard: Signed-Releasesno data
Inputs used
releases_count63
latest_release_tagv0.28.1-nightly.19
releases_from_tagsno
days_since_latest_release0
mean_days_between_releases10.1

Community & Adoption

Does the project have users, downloads, attention, and a welcoming setup for contributors?

70Good · 17% of overall
How it's scored
53.2/60Stars1,914 stars
17.3/25Forks121 forks
3.9/15Watchers6 watchers
Inputs used
forks121
stars1,914
watchers6
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history
How it's scored
22.5/22.5README
22.5/22.5Licenserecognized license (AGPL-3.0)
0/18CONTRIBUTING guide
13.5/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges
has_contributingno
has_issue_templateno
has_code_of_conductyes
readme_badge_services
has_pull_request_templateno

Sustainability & Governance

Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?

77Good · 23% of overall
How it's scored
25.2/54Bus factor2 contributor(s) cover half of all commits
14.2/22.5Commit distributiontop contributor authored 37% of commits
13.5/13.5Contributor breadth22 contributors
0/10OpenSSF Scorecard: Contributorsno data
Inputs used
bus_factor2
contributors_sampled22
top_contributor_share0.371
How it's scored
30.2/42Issue resolution72% of issues closed
27.9/30PR acceptance3,053/3,278 decided PRs merged
0/13Newcomer PR acceptanceno first-time contributor's PR decided in 30d
0/15OpenSSF Scorecard: Code-Reviewno data
Inputs used
merged_prs3,053
open_issues82
closed_issues210
prs_merged_7d
prs_decided_7d
prs_merged_30d
prs_decided_30d
issue_closed_ratio0.719
closed_unmerged_prs225
first_time_authors_30d
first_time_prs_merged_30d
first_time_prs_decided_30d
Excluded from scoring (no data or not applicable): Newcomer PR acceptance. Remaining weights renormalized.
How it's scored
30/30Ownership backingorganization-owned
0/20Verified domainverified-domain status not read for this organization
24.5/25Owner reach2,570 followers of coder
22.2/25Track record232 public repos, account ~4 yr old
Inputs used
followers2,570
owner_typeOrganization
is_verified
owner_logincoder
public_repos232
account_age_days1,678
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.

Engineering Quality

Are baseline engineering and documentation practices in place?

88Excellent · 19% of overall
How it's scored
24/24CI workflows13 workflow(s)
24/24Tests present
16/16Linter configeslint.config.mjs
0/9.6Pre-commit hooks
0/6.4.editorconfig
0/20OpenSSF Scorecard: CI-Testsno data
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configyes
has_precommit_configno

Documentation

100Exceptional
How it's scored
30/30README
25/25Documentation directory
15/15Documentation / homepage sitehttps://mux.coder.com
10/10Repository description
10/10Topics2 topics
10/10Wiki
Inputs used
topicside, agent
has_wikiyes
homepagehttps://mux.coder.com
docs_sitehttps://mux.coder.com
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?

1Critical · 16% of overall
How it's scored
0/30Security policy (SECURITY.md)
0/25Dependabot config
0/25Dependency lockfiles
0/20CodeQL workflow
Inputs used
sourcefile_signals
lockfiles
manifestspackage.json, vscode/package.json
has_codeql_workflowno
has_security_policyno
has_dependabot_configno

AI Readiness

How well is the repo equipped to be developed and maintained with AI coding agents? Carries a deliberately small weight (4%): agent tooling is a real maintenance signal, but a repository with none can still reach 100/100.

80Excellent · 4% of overall
How it's scored
45/45Agent instructionsAGENTS.md, CLAUDE.md, docs/AGENTS.md
0/15Machine-readable docs (llms.txt)
0/40Legible commit historyno data
Inputs used
has_llms_txtno
llms_txt_url
legible_history_share
agent_instruction_filesAGENTS.md, CLAUDE.md, docs/AGENTS.md
agent_instruction_max_bytes20,295
Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.
How it's scored
18/18One-command bootstrapMakefile, vscode/Makefile
22/22Automated tests
11/11Lint / format configeslint.config.mjs
11/11Static type checkingpackages/chat-components/tsconfig.json, tsconfig.json, vscode/tsconfig.json
10/10Reproducible environmentDockerfile, Nix
0/10Demonstrated agent practiceno data
0/8Automated maintenanceno data
0/10OpenSSF Scorecard: Pinned-Dependenciesno data
Inputs used
has_nixyes
has_testsyes
lockfiles
has_dockerfileyes
typed_languageyes
bootstrap_filesMakefile, vscode/Makefile
has_devcontainerno
has_linter_configyes
typecheck_configspackages/chat-components/tsconfig.json, tsconfig.json, vscode/tsconfig.json
agent_commit_share
toolchain_manifests
dependency_bot_commit_share
Excluded from scoring (no data or not applicable): Demonstrated agent practice, Automated maintenance. Remaining weights renormalized.
How it's scored
45/45Type-checkable codeTypeScript (statically typed)
53.6/55Manageable file sizes60/2,337 source files over 60KB
Inputs used
primary_languageTypeScript
largest_source_bytes680,152
source_files_sampled2,337
oversized_source_files60
How it's scored
0/40API schema (OpenAPI/GraphQL/proto)
20/20MCP server
0/40Runnable examples
Inputs used
example_dirs
has_mcp_signalyes
api_schema_files
interfaces_expected_ofnetwork-service

Key facts

1,914GitHub stars
22contributors
3,403commits, last 12 months
0days since last push
63releases
2bus factor
82open issues
npmpackage ecosystems

Data collection warnings

  • npm package 'mux' points at a different repository (git+https://github.com/coder/mux.git); excluded from ecosystem scoring
  • OpenSSF Scorecard did not return a usable result (Skipping github.com/coder/cmux: run: RepoClient.LocalPath: error during tarballHandler.setup: internal error: handler.httpClient.Do: Get "https://codeload.github.com/coder/mux/legacy.tar.gz/refs/heads/main": internal error: innerTransport.RoundTrip: internal error: innerTransport.RoundTrip: error in HTTP: dial tcp: lookup codeload.github.com on 127.0.0.11:53: server misbehaving); skipping Scorecard checks

More detail

Direct dependencies 100
RegistryPackageVersion constraintManifest
npm@1password/sdk^0.4.0package.json
npm@agentclientprotocol/sdk^0.25.0package.json
npm@ai-sdk/amazon-bedrock^5.0.15package.json
npm@ai-sdk/anthropic^4.0.11package.json
npm@ai-sdk/deepseek^3.0.7package.json
npm@ai-sdk/google^4.0.11package.json
npm@ai-sdk/mcp^2.0.10package.json
npm@ai-sdk/openai^4.0.11package.json
npm@ai-sdk/openai-compatible^3.0.7package.json
npm@ai-sdk/xai^4.0.10package.json
npm@aws-sdk/credential-providers^3.940.0package.json
npm@dnd-kit/core^6.3.1package.json
npm@dnd-kit/sortable^10.0.0package.json
npm@dnd-kit/utilities^3.2.2package.json
npm@duckdb/node-api^1.4.4-r.1package.json
npm@homebridge/ciao^1.3.4package.json
npm@jitl/quickjs-wasmfile-release-asyncify^0.31.0package.json
npm@lydell/node-pty1.1.0package.json
npm@mozilla/readability^0.6.0package.json
npm@novnc/novnc^1.6.0package.json
npm@openrouter/ai-sdk-provider^3.0.0package.json
npm@orpc/client^1.11.3package.json
npm@orpc/openapi^1.12.2package.json
npm@orpc/server^1.11.3package.json
npm@orpc/zod^1.11.3package.json
npm@radix-ui/react-checkbox^1.3.3package.json
npm@radix-ui/react-context-menu^2.2.16package.json
npm@radix-ui/react-dialog^1.1.15package.json
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npm@radix-ui/react-label^2.1.8package.json
npm@radix-ui/react-popover^1.1.15package.json
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npmzod^4.1.11package.json
npmzod-to-json-schema^3.24.6package.json
All dependencies 198

Full resolved dependency set from the GitHub dependency graph: 103 direct and 95 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
npm@1password/sdk^0.4.0direct
npm@agentclientprotocol/sdk^0.25.0direct
npm@ai-sdk/amazon-bedrock^5.0.15direct
npm@ai-sdk/anthropic^4.0.11direct
npm@ai-sdk/deepseek^3.0.7direct
npm@ai-sdk/google^4.0.11direct
npm@ai-sdk/mcp^2.0.10direct
npm@ai-sdk/openai^4.0.11direct
npm@ai-sdk/openai-compatible^3.0.7direct
npm@ai-sdk/xai^4.0.10direct
npm@aws-sdk/credential-providers^3.940.0direct
npm@dnd-kit/core^6.3.1direct
npm@dnd-kit/sortable^10.0.0direct
npm@dnd-kit/utilities^3.2.2direct
npm@duckdb/node-api^1.4.4-r.1direct
npm@homebridge/ciao^1.3.4direct
npm@jitl/quickjs-wasmfile-release-asyncify^0.31.0direct
npm@lydell/node-pty1.1.0direct
npm@mozilla/readability^0.6.0direct
npm@novnc/novnc^1.6.0direct
npm@openrouter/ai-sdk-provider^3.0.0direct
npm@orpc/client^1.11.3direct
npm@orpc/openapi^1.12.2direct
npm@orpc/server^1.11.3direct
npm@orpc/zod^1.11.3direct
npm@radix-ui/react-checkbox^1.3.3direct
npm@radix-ui/react-context-menu^2.2.16direct
npm@radix-ui/react-dialog^1.1.15direct
npm@radix-ui/react-hover-card^1.1.15direct
npm@radix-ui/react-label^2.1.8direct
npm@radix-ui/react-popover^1.1.15direct
npm@radix-ui/react-scroll-area^1.2.10direct
npm@radix-ui/react-select^2.2.6direct
npm@radix-ui/react-separator^1.1.7direct
npm@radix-ui/react-slot^1.2.4direct
npm@radix-ui/react-switch^1.2.6direct
npm@radix-ui/react-tabs^1.1.13direct
npm@radix-ui/react-toggle-group^1.1.11direct
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npm@radix-ui/react-visually-hidden^1.2.4direct
npm@vercel/ai-sdk-openai-websocket-fetch^1.0.0direct
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npmai7.0.19direct
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npmpostcss^8.5.6indirect
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Raw JSON report machine-readable

Feedback

Spotted something off in this report, or have thoughts to share? Wrong measurements, missed tooling, ideas, questions — anything is welcome. Every message is read and gets a response.

The message is kept through sign-in.

Scores are signals, not warranties. They reflect publicly visible practices on GitHub — not a code audit, and not a security guarantee.

Missing data is excluded and weights renormalized, never scored as zero. Methodology is versioned and open: metrics v2.10.0, schema v0.11.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statisticsnpm.