Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-08-28 11:00 UTC

tulir / synapse

Synapse: Matrix homeserver written in Python/Twisted.

PythonAGPL-3.0★ 0 stars⑂ 0 forkssince Aug 2024forkView on GitHub ↗
KindLibraryCommand-line toolhow this is determined

tulir/synapse holds a health index of 33 out of 100, placing it in the At Risk band. It scores highest on Engineering Quality (69/100) and lowest on Community & Adoption (12/100). It was last updated 7 days ago. 2 contributors account for most of its recent work.

33
overall / 100
At Risk

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.

33
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 43 is calibrated to 39 on the published index scale (record calibration 2026-08-02).

Ownership

Tulir AsokanPersonal account
1,186 followers113 public repossince Apr 2013@beeper at @automattic

This repository is owned by a personal account. A single-owner project carries more continuity risk than an organization-backed one.

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
PyPImatrix-synapsepoints to another repo — not scored1.159.029,2835229 days ago—
crates.iosynapsepoints to another repo — not scored1.1.062407 days agoaiblockchaincommunicationfederatedneuralcryptographynetwork-programmingscienceweb-programmingwasm

Metrics by category

Vitality

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

44Weak · 21% of overall

Development activity

36Weak
How it's scored
36/36Push recency — last push 7 days ago
0/36Commit cadence — 0/52 weeks with commits
0/18Commit volume — 0 commits in the last year
0/10OpenSSF Scorecard: Maintained — 0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
Inputs used
commits_last_year0
human_commit_share0.68
days_since_last_push7
active_weeks_last_year0

Release discipline

56Moderate
How it's scored
16.2/27Ships releases — 45 version tags (no GitHub releases)
7.2/36Release recency — latest release 422 days ago
27/27Release cadence — a release every ~14 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count45
latest_release_tagv1.133.0
releases_from_tagsyes
days_since_latest_release422
mean_days_between_releases14
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Signed-Releases. Remaining weights renormalized.

Community & Adoption

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

12Critical · 17% of overall

Popularity & adoption

1Critical
How it's scored
0/60Stars — 0 stars
0/25Forks — 0 forks
0/15Watchers — 0 watchers
Inputs used
forks0
stars0
watchers0
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

25At Risk
How it's scored
0/22.5README
22.5/22.5License — recognized license (AGPL-3.0)
0/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeno
has_licenseno
readme_badges0
has_contributingno
has_issue_templateno
has_code_of_conductno
readme_badge_services—
has_pull_request_templateno

Sustainability & Governance

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

46Weak · 23% of overall

Maintainer resilience (bus factor)

63Moderate
How it's scored
25.2/54Bus factor — 2 contributor(s) cover half of all commits
14.1/22.5Commit distribution — top contributor authored 37% of commits
13.5/13.5Contributor breadth — 99 contributors
10/10OpenSSF Scorecard: Contributors — project has 46 contributing companies or organizations
Inputs used
bus_factor2
contributors_sampled99
top_contributor_share0.373

Issue & PR responsiveness

1Critical
How it's scored
0/42Issue resolution — no issues or no data
0/30PR acceptance — no decided pull requests or no data
0/13Newcomer PR acceptance — no first-time contributor's PR decided in 30d
0/15OpenSSF Scorecard: Code-Review — Found 0/30 approved changesets -- score normalized to 0
Inputs used
merged_prs0
open_issues0
closed_issues0
prs_merged_7d0
prs_decided_7d0
prs_merged_30d0
prs_decided_30d0
issue_closed_ratio—
closed_unmerged_prs0
first_time_authors_30d0
first_time_prs_merged_30d0
first_time_prs_decided_30d0
Excluded from scoring (no data or not applicable): Issue resolution, PR acceptance, Newcomer PR acceptance. Remaining weights renormalized.

Ownership & stewardship

71Good
How it's scored
10/30Ownership backing — personal (user) account
0/20Verified domain — not applicable to user accounts
22.1/25Owner reach — 1,186 followers of tulir
25/25Track record — 113 public repos, account ~13 yr old
Inputs used
followers1,186
owner_typeUser
is_verified—
owner_logintulir
public_repos113
account_age_days4,875
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.

Engineering Quality

Are baseline engineering and documentation practices in place?

69Good · 19% of overall

Engineering practices

88Excellent
How it's scored
24/24CI workflows — 13 workflow(s)
24/24Tests present
16/16Linter config — .rustfmt.toml, pyproject.toml ([tool.ruff], [tool.black], [tool.isort]), tox.ini
0/9.6Pre-commit hooks
6.4/6.4.editorconfig
0/20OpenSSF Scorecard: CI-Tests — no data
Inputs used
has_ciyes
has_testsyes
has_editorconfigyes
has_linter_configyes
has_precommit_configno
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: CI-Tests. Remaining weights renormalized.

Documentation

40Weak
How it's scored
0/30README
25/25Documentation directory
15/15Documentation / homepage site — https://element-hq.github.io/synapse
0/10Repository description
0/10Topics
0/10Wiki
Inputs used
topics—
has_wikino
homepagehttps://element-hq.github.io/synapse
docs_sitehttps://element-hq.github.io/synapse
has_readmeno
has_docs_diryes
has_descriptionno

Security

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

33At Risk · 16% of overall

Security posture

33At Risk
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0/7.5Branch-Protection — branch protection not enabled on development/release branches
0/2.5CI-Tests — no data
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
0/7.5Code-Review — Found 0/30 approved changesets -- score normalized to 0
2.5/2.5Contributors — project has 46 contributing companies or organizations
10/10Dangerous-Workflow — no dangerous workflow patterns detected
7.5/7.5Dependency-Update-Tool — update tool detected
0/5Fuzzing — project is not fuzzed
2.5/2.5License — license file detected
0/7.5Maintained — 0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
0/5Packaging — no data
0/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
0/5SAST — no SAST tool detected
0/5Security-Policy — security policy file not detected
0/7.5Signed-Releases — no data
0/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
0/7.5Vulnerabilities — 123 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate3.3
Excluded from scoring (no data or not applicable): CI-Tests, Packaging, Signed-Releases. Remaining weights renormalized.

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.

64Moderate · 4% of overall

Agent context & guidance

40Weak
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
40/40Legible commit history — 53 of 68 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.779
agent_instruction_files—
agent_instruction_max_bytes—

Verify loop (build / test / typecheck)

75Good
How it's scored
12.6/18One-command bootstrap — Cargo.toml, rust/Cargo.toml (toolchain convention, no task runner)
22/22Automated tests
11/11Lint / format config — .rustfmt.toml, pyproject.toml ([tool.ruff], [tool.black], [tool.isort]), tox.ini
11/11Static type checking — mypy.ini, synapse/py.typed
10/10Reproducible environment — Dockerfile, Nix, lockfile
0/10Demonstrated agent practice — no agent-authored commits among the last 100
8/8Automated maintenance — 32 of the last 100 commits are automated dependency updates
0/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixyes
has_testsyes
lockfilesCargo.lock, poetry.lock
has_dockerfileyes
typed_languageno
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configsmypy.ini, synapse/py.typed
agent_commit_share0
toolchain_manifestsCargo.toml, rust/Cargo.toml
dependency_bot_commit_share0.32

Code legibility for models

80Excellent
How it's scored
27/45Type-checkable code — Python with type-check config (mypy.ini, synapse/py.typed)
52.8/55Manageable file sizes — 37/924 source files over 60KB
Inputs used
primary_languagePython
largest_source_bytes185,679
source_files_sampled924
oversized_source_files37

Key facts

0GitHub stars
99contributors
0commits, last 12 months
7days since last push
45releases
2bus factor
0open issues
crates.io, PyPIpackage ecosystems

Data collection warnings

  • Community profile unavailable
  • pypi package 'matrix-synapse' points at a different repository (https://github.com/element-hq/synapse); excluded from ecosystem scoring
  • crates package 'synapse' points at a different repository (https://github.com/ciresnave/synapse); excluded from ecosystem scoring
  • GitHub dependency-graph SBOM unavailable (404); the dependency graph may be disabled for this repository

More detail

OpenSSF Scorecard 3.3 / 10
3.3aggregate

Independent, tool-agnostic security assessment from the open-source OpenSSF Scorecard. Each check rewards a security practice, not a specific vendor's tool. Checks Scorecard could not determine are marked n/a and excluded from the security score (never counted as zero).Scorecard v5.5.0 · 2026-08-28 10:59 UTC

10Binary-Artifactsno binaries found in the repo
0Branch-Protectionbranch protection not enabled on development/release branches
n/aCI-Testsno pull request found
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0Code-ReviewFound 0/30 approved changesets -- score normalized to 0
10Contributorsproject has 46 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
0Maintained0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
n/aPackaginginternal error: Client.Actions.ListWorkflowRunsByFileName: internal error: ListWorkflowRunsByFileName: GET https://api.github.com/repos/tulir/synapse/actions/workflows/push_complement_image.yml/runs?status=success: 404 Not Found []
0Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
0SASTno SAST tool detected
0Security-Policysecurity policy file not detected
n/aSigned-Releasesno releases found
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
0Vulnerabilities123 existing vulnerabilities detected
Direct dependencies 64
RegistryPackageVersion constraintManifest
PyPIjsonschema>=3.0.0pyproject.toml
PyPIimmutabledict>=2.0pyproject.toml
PyPIunpaddedbase64>=2.1.0pyproject.toml
PyPIcanonicaljson^2.0.0pyproject.toml
PyPIsignedjson^1.1.0pyproject.toml
PyPIservice-identity>=18.1.0pyproject.toml
PyPITwisted>=18.9.0pyproject.toml
PyPItreq>=15.1pyproject.toml
PyPIpyOpenSSL>=16.0.0pyproject.toml
PyPIPyYAML>=3.13pyproject.toml
PyPIpyasn1>=0.1.9pyproject.toml
PyPIpyasn1-modules>=0.0.7pyproject.toml
PyPIbcrypt>=3.1.7pyproject.toml
PyPIPillow>=10.0.1pyproject.toml
PyPIsortedcontainers>=1.5.2pyproject.toml
PyPIpymacaroons>=0.13.0pyproject.toml
PyPImsgpack>=0.5.2pyproject.toml
PyPIphonenumbers>=8.2.0pyproject.toml
PyPIprometheus-client>=0.4.0pyproject.toml
PyPIattrs>=19.2.0,!=21.1.0pyproject.toml
PyPInetaddr>=0.7.18pyproject.toml
PyPIJinja2>=3.0pyproject.toml
PyPIbleach>=1.4.3pyproject.toml
PyPItyping-extensions>=4.1pyproject.toml
PyPIcryptography>=3.4.7pyproject.toml
PyPIijson>=3.1.4pyproject.toml
PyPImatrix-common^1.3.0pyproject.toml
PyPIpackaging>=20.0pyproject.toml
PyPIpydantic>=1.7.4, <3pyproject.toml
PyPIsetuptools_rust>=1.3pyproject.toml
PyPIpython-multipart>=0.0.9pyproject.toml
PyPImatrix-synapse-ldap3>=0.1pyproject.toml
PyPIpsycopg2>=2.8pyproject.toml
PyPIpsycopg2cffi>=2.8pyproject.toml
PyPIpsycopg2cffi-compat==1.1pyproject.toml
PyPIpysaml2>=4.5.0pyproject.toml
PyPIauthlib>=0.15.1pyproject.toml
PyPIsystemd-python>=231pyproject.toml
PyPIlxml>=4.2.0pyproject.toml
PyPIsentry-sdk>=0.7.2pyproject.toml
PyPIopentracing>=2.2.0pyproject.toml
PyPIjaeger-client>=4.0.0pyproject.toml
PyPItxredisapi>=1.4.7pyproject.toml
PyPIhiredis*pyproject.toml
PyPIPympler*pyproject.toml
PyPIparameterized>=0.7.4pyproject.toml
PyPIidna>=2.5pyproject.toml
PyPIpyicu>=2.10.2pyproject.toml
crates.ioanyhow1.0.63rust/Cargo.toml
crates.iobase640.21.7rust/Cargo.toml
crates.iobytes1.6.0rust/Cargo.toml
crates.ioheaders0.4.0rust/Cargo.toml
crates.iohttp1.1.0rust/Cargo.toml
crates.iolazy_static1.4.0rust/Cargo.toml
crates.iolog0.4.17rust/Cargo.toml
crates.iomime0.3.17rust/Cargo.toml
crates.iopyo30.21.0rust/Cargo.toml
crates.iopyo3-log0.10.0rust/Cargo.toml
crates.iopythonize0.21.0rust/Cargo.toml
crates.ioregex1.6.0rust/Cargo.toml
crates.iosha20.10.8rust/Cargo.toml
crates.ioserde1.0.144rust/Cargo.toml
crates.ioserde_json1.0.85rust/Cargo.toml
crates.ioulid1.1.2rust/Cargo.toml
All dependencies not collected

The resolved dependency set could not be collected for this report: GitHub dependency-graph SBOM unavailable (404); the dependency graph may be disabled for this repository

Raw JSON report machine-readable

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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 v0.34.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statistics — PyPI, crates.io.