Public recordCritical
Software health reportschema 0.13.0 · metrics 2.10.0 · 2026-07-18 15:31 UTC
input-output-hk / rust-cardano
rust client libraries to deal with the current cardano mainnet (byron / cardano-sl)
input-output-hk/rust-cardano holds a health index of 17 out of 100, placing it in the Critical band. It scores highest on Sustainability & Governance (74/100) and lowest on Vitality (13/100). The repository is archived, so no further maintenance is expected.
17
overall / 100Software 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.
17
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)
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 45 is calibrated to 42 on the published index scale (record calibration 2026-08-02).
Ownership
Input OutputOrganization
1,197 followers757 public repossince Jun 2015
This repository is backed by an organization — shared, accountable stewardship that can outlive any single maintainer.
Package ecosystems
| Registry | Package | Version | Downloads / mo | Versions | Last publish | Tags |
|---|---|---|---|---|---|---|
| crates.io | cardanopoints to another repo — not scored | 0.4.0 | 25 | 4 | 10 days ago | — |
| crates.io | protocolpoints to another repo — not scored | 3.4.0 | 1,997 | 71 | 1406 days ago | udpprotocolconnectiontcpencoding |
Metrics by category
Vitality
Is the project alive — is code being written and are releases shipping?
13
Development activity
1Critical
Abandonment alert
Work has arrived and nobody has attended to it
archived on GitHub by its maintainersOverall rating: Critical ceiling
Silence alone is never the finding — a small, finished library may need no commits for years. This alert requires both: no human commit for a long time, and obligations the project is visibly not discharging. Automated commits do not count as maintenance.
How abandonment is assessedHow it's scored
| 0/36 | Push recency — last push 1,498 days ago |
| 0/36 | Commit cadence — 0/52 weeks with commits |
| 0/18 | Commit volume — 0 commits in the last year |
| 0/10 | OpenSSF Scorecard: Maintained — project is archived |
Inputs used
| commits_last_year | 0 |
| human_commit_share | — |
| days_since_last_push | 1,498 |
| active_weeks_last_year | 0 |
Release discipline
32At Risk
How it's scored
| 16.2/27 | Ships releases — 1 version tags (no GitHub releases) |
| 0/36 | Release recency — latest release 3,049 days ago |
| 12.6/27 | Release cadence — cadence unknown (single release) |
| 0/10 | OpenSSF Scorecard: Signed-Releases — no data |
Inputs used
| releases_count | 1 |
| latest_release_tag | v0.1.2 |
| releases_from_tags | yes |
| days_since_latest_release | 3,049 |
| mean_days_between_releases | — |
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?
64
Popularity & adoption
58Moderate
How it's scored
| 39.3/60 | Stars — 266 stars |
| 15.5/25 | Forks — 74 forks |
| 3.3/15 | Watchers — 5 watchers |
Inputs used
| forks | 74 |
| stars | 266 |
| watchers | 5 |
| growth_state | unverified |
| growth_factor_pct | 100 |
| growth_unverified_reason | no_history |
Community health
70Good
How it's scored
| 22.5/22.5 | README |
| 22.5/22.5 | License — recognized license (MIT) |
| 18/18 | CONTRIBUTING guide |
| 0/13.5 | Code of conduct |
| 0/7.2 | Issue template |
| 0/6.3 | PR template |
Inputs used
| has_readme | yes |
| has_license | yes |
| readme_badges | — |
| has_contributing | yes |
| has_issue_template | no |
| has_code_of_conduct | no |
| readme_badge_services | — |
| has_pull_request_template | no |
Sustainability & Governance
Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?
74
How it's scored
| 9/54 | Bus factor — 1 contributor(s) cover half of all commits |
| 11.1/22.5 | Commit distribution — top contributor authored 51% of commits |
| 13.5/13.5 | Contributor breadth — 24 contributors |
| 10/10 | OpenSSF Scorecard: Contributors — project has 31 contributing companies or organizations |
Inputs used
| bus_factor | 1 |
| contributors_sampled | 24 |
| top_contributor_share | 0.507 |
Issue & PR responsiveness
88Excellent
How it's scored
| 42/42 | Issue resolution — 100% of issues closed |
| 28.3/30 | PR acceptance — 554/588 decided PRs merged |
| 0/13 | Newcomer PR acceptance — no first-time contributor's PR decided in 30d |
| 6/15 | OpenSSF Scorecard: Code-Review — Found 6/14 approved changesets -- score normalized to 4 |
Inputs used
| merged_prs | 554 |
| open_issues | 0 |
| closed_issues | 143 |
| prs_merged_7d | — |
| prs_decided_7d | — |
| prs_merged_30d | — |
| prs_decided_30d | — |
| issue_closed_ratio | 1 |
| closed_unmerged_prs | 34 |
| 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.
Ownership & stewardship
96Exceptional
How it's scored
| 30/30 | Ownership backing — organization-owned |
| 0/20 | Verified domain — verified-domain status not read for this organization |
| 22.1/25 | Owner reach — 1,197 followers of input-output-hk |
| 25/25 | Track record — 757 public repos, account ~11 yr old |
Inputs used
| followers | 1,197 |
| owner_type | Organization |
| is_verified | — |
| owner_login | input-output-hk |
| public_repos | 757 |
| account_age_days | 4,050 |
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.
Engineering Quality
Are baseline engineering and documentation practices in place?
34
Engineering practices
24At Risk
How it's scored
| 0/24 | CI workflows |
| 24/24 | Tests present |
| 0/16 | Linter config |
| 0/9.6 | Pre-commit hooks |
| 0/6.4 | .editorconfig |
| 0/20 | OpenSSF Scorecard: CI-Tests — 0 out of 7 merged PRs checked by a CI test -- score normalized to 0 |
Inputs used
| has_ci | no |
| has_tests | yes |
| has_editorconfig | no |
| has_linter_config | no |
| has_precommit_config | no |
Documentation
50Moderate
How it's scored
| 30/30 | README |
| 0/25 | Documentation directory |
| 0/15 | Documentation / homepage site |
| 10/10 | Repository description |
| 0/10 | Topics |
| 10/10 | Wiki |
Inputs used
| topics | — |
| has_wiki | yes |
| homepage | — |
| docs_site | — |
| has_readme | yes |
| has_docs_dir | no |
| has_description | yes |
Security
Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?
37
Security posture
37Weak
How it's scored
| 7.5/7.5 | Binary-Artifacts — no binaries found in the repo |
| 0/7.5 | Branch-Protection — no data |
| 0/2.5 | CI-Tests — 0 out of 7 merged PRs checked by a CI test -- score normalized to 0 |
| 0/2.5 | CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected |
| 3/7.5 | Code-Review — Found 6/14 approved changesets -- score normalized to 4 |
| 2.5/2.5 | Contributors — project has 31 contributing companies or organizations |
| 0/10 | Dangerous-Workflow — no data |
| 0/7.5 | Dependency-Update-Tool — no update tool detected |
| 0/5 | Fuzzing — project is not fuzzed |
| 2.5/2.5 | License — license file detected |
| 0/7.5 | Maintained — project is archived |
| 0/5 | Packaging — no data |
| 0/5 | Pinned-Dependencies — no data |
| 0/5 | SAST — SAST tool is not run on all commits -- score normalized to 0 |
| 0/5 | Security-Policy — security policy file not detected |
| 0/7.5 | Signed-Releases — no data |
| 0/7.5 | Token-Permissions — no data |
| 7.5/7.5 | Vulnerabilities — 0 existing vulnerabilities detected |
Inputs used
| source | openssf_scorecard |
| checks_evaluated | 12 |
| scorecard_version | v5.5.0 |
| checks_inconclusive | 6 |
| scorecard_aggregate | 3.7 |
Excluded from scoring (no data or not applicable): Branch-Protection, Dangerous-Workflow, Packaging, Pinned-Dependencies, Signed-Releases, Token-Permissions. 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.
59
Agent context & guidance
1Critical
How it's scored
| 0/45 | Agent instructions — no CLAUDE.md / AGENTS.md / editor rules |
| 0/15 | Machine-readable docs (llms.txt) |
| 0/40 | Legible commit history — no data |
Inputs used
| has_llms_txt | no |
| llms_txt_url | — |
| legible_history_share | — |
| agent_instruction_files | — |
| agent_instruction_max_bytes | — |
Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.
How it's scored
| 18/18 | One-command bootstrap — cardano-c/examples/Makefile |
| 22/22 | Automated tests |
| 0/11 | Lint / format config |
| 11/11 | Static type checking — Rust (statically typed) |
| 0/10 | Reproducible environment |
| 0/10 | Demonstrated agent practice — no data |
| 0/8 | Automated maintenance — no data |
| 0/10 | OpenSSF Scorecard: Pinned-Dependencies — no data |
Inputs used
| has_nix | no |
| has_tests | yes |
| lockfiles | — |
| has_dockerfile | no |
| typed_language | yes |
| bootstrap_files | cardano-c/examples/Makefile |
| has_devcontainer | no |
| has_linter_config | no |
| typecheck_configs | — |
| agent_commit_share | — |
| toolchain_manifests | — |
| dependency_bot_commit_share | — |
Excluded from scoring (no data or not applicable): Demonstrated agent practice, Automated maintenance, OpenSSF Scorecard: Pinned-Dependencies. Remaining weights renormalized.
Code legibility for models
99Exceptional
How it's scored
| 45/45 | Type-checkable code — Rust (statically typed) |
| 53.9/55 | Manageable file sizes — 3/155 source files over 60KB |
Inputs used
| primary_language | Rust |
| largest_source_bytes | 81,700 |
| source_files_sampled | 155 |
| oversized_source_files | 3 |
Machine-readable interfaces
100Exceptional
How it's scored
| 0/40 | API schema (OpenAPI/GraphQL/proto) — not applicable to this kind of software |
| 0/20 | MCP server — not applicable to this kind of software |
| 40/40 | Runnable examples — examples |
Inputs used
| example_dirs | examples |
| has_mcp_signal | no |
| api_schema_files | — |
| interfaces_expected_of | — |
Excluded from scoring (no data or not applicable): API schema (OpenAPI/GraphQL/proto), MCP server. Remaining weights renormalized.
Key facts
266GitHub stars
24contributors
0commits, last 12 months
1,498days since last push
1releases
1bus factor
0open issues
crates.iopackage ecosystems
Data collection warnings
- Could not fetch crates package 'cardano-c' from its registry
- crates package 'cardano' points at a different repository (https://github.com/valkyoth/cardano); excluded from ecosystem scoring
- Could not fetch crates package 'chain-core' from its registry
- Could not fetch crates package 'exe-common' from its registry
- Could not fetch crates package 'network-core' from its registry
- Could not fetch crates package 'network-ntt' from its registry
- Could not fetch crates package 'protocol-tokio' from its registry
- crates package 'protocol' points at a different repository (https://github.com/dylanmckay/protocol); excluded from ecosystem scoring
More detail
OpenSSF Scorecard 3.7 / 10
3.7aggregate
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).
| 10 | Binary-Artifacts | no binaries found in the repo |
| n/a | Branch-Protection | internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md |
| 0 | CI-Tests | 0 out of 7 merged PRs checked by a CI test -- score normalized to 0 |
| 0 | CII-Best-Practices | no effort to earn an OpenSSF best practices badge detected |
| 4 | Code-Review | Found 6/14 approved changesets -- score normalized to 4 |
| 10 | Contributors | project has 31 contributing companies or organizations |
| n/a | Dangerous-Workflow | no workflows found |
| 0 | Dependency-Update-Tool | no update tool detected |
| 0 | Fuzzing | project is not fuzzed |
| 10 | License | license file detected |
| 0 | Maintained | project is archived |
| n/a | Packaging | packaging workflow not detected |
| n/a | Pinned-Dependencies | no dependencies found |
| 0 | SAST | SAST tool is not run on all commits -- score normalized to 0 |
| 0 | Security-Policy | security policy file not detected |
| n/a | Signed-Releases | no releases found |
| n/a | Token-Permissions | No tokens found |
| 10 | Vulnerabilities | 0 existing vulnerabilities detected |
Direct dependencies 54
| Registry | Package | Version constraint | Manifest |
|---|---|---|---|
| crates.io | cardano | — | cardano-c/Cargo.toml |
| crates.io | cbor_event | ^2.1.1 | cardano-c/Cargo.toml |
| crates.io | cryptoxide | 0.1 | cardano/Cargo.toml |
| crates.io | cbor_event | ^2.1.1 | cardano/Cargo.toml |
| crates.io | chain-core | — | cardano/Cargo.toml |
| crates.io | serde | 1.0 | cardano/Cargo.toml |
| crates.io | serde_derive | 1.0 | cardano/Cargo.toml |
| crates.io | cfg-if | 0.1 | chain-core/Cargo.toml |
| crates.io | quickcheck | 0.8 | chain-core/Cargo.toml |
| crates.io | cardano-storage | — | exe-common/Cargo.toml |
| crates.io | storage-units | — | exe-common/Cargo.toml |
| crates.io | protocol | — | exe-common/Cargo.toml |
| crates.io | cbor_event | 2.1.2 | exe-common/Cargo.toml |
| crates.io | log | * | exe-common/Cargo.toml |
| crates.io | rand | 0.6 | exe-common/Cargo.toml |
| crates.io | serde | 1.0 | exe-common/Cargo.toml |
| crates.io | serde_derive | 1.0 | exe-common/Cargo.toml |
| crates.io | serde_yaml | 0.7 | exe-common/Cargo.toml |
| crates.io | serde_json | 1.0 | exe-common/Cargo.toml |
| crates.io | base64 | 0.9 | exe-common/Cargo.toml |
| crates.io | network-ntt | — | exe-common/Cargo.toml |
| crates.io | network-core | — | exe-common/Cargo.toml |
| crates.io | futures | 0.1 | exe-common/Cargo.toml |
| crates.io | hyper | 0.11 | exe-common/Cargo.toml |
| crates.io | tokio | 0.1.15 | exe-common/Cargo.toml |
| crates.io | tokio-core | 0.1.15 | exe-common/Cargo.toml |
| crates.io | cardano | — | exe-common/Cargo.toml |
| crates.io | chain-core | — | network-core/Cargo.toml |
| crates.io | bytes | 0.4 | network-core/Cargo.toml |
| crates.io | futures | 0.1 | network-core/Cargo.toml |
| crates.io | slog | ^2.4.1 | network-ntt/Cargo.toml |
| crates.io | futures | ^0.1 | network-ntt/Cargo.toml |
| crates.io | tokio | ^0.1 | network-ntt/Cargo.toml |
| crates.io | network-core | — | network-ntt/Cargo.toml |
| crates.io | chain-core | — | network-ntt/Cargo.toml |
| crates.io | protocol-tokio | — | network-ntt/Cargo.toml |
| crates.io | cbor_event | ^2.1 | network-ntt/Cargo.toml |
| crates.io | cbor_event | ^2.1.1 | protocol-tokio/Cargo.toml |
| crates.io | futures | ^0.1.25 | protocol-tokio/Cargo.toml |
| crates.io | tokio-io | ^0.1.9 | protocol-tokio/Cargo.toml |
| crates.io | tokio-codec | ^0.1.1 | protocol-tokio/Cargo.toml |
| crates.io | bytes | ^0.4.10 | protocol-tokio/Cargo.toml |
| crates.io | log | ^0.4.5 | protocol-tokio/Cargo.toml |
| crates.io | chain-core | — | protocol-tokio/Cargo.toml |
| crates.io | cbor_event | ^2.1.2 | protocol/Cargo.toml |
| crates.io | cardano | — | protocol/Cargo.toml |
| crates.io | log | 0.4 | protocol/Cargo.toml |
| crates.io | rand | 0.6 | storage-units/Cargo.toml |
| crates.io | cryptoxide | 0.1 | storage-units/Cargo.toml |
| crates.io | cardano | — | storage/Cargo.toml |
| crates.io | cbor_event | ^2.1.1 | storage/Cargo.toml |
| crates.io | storage-units | — | storage/Cargo.toml |
| crates.io | log | * | storage/Cargo.toml |
| crates.io | rand | 0.6 | storage/Cargo.toml |
All dependencies 20
Full resolved dependency set from the GitHub dependency graph: 17 direct and 3 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.
| Registry | Package | Version | Relation |
|---|---|---|---|
| crates.io | base64 | — | direct |
| crates.io | bytes | — | direct |
| crates.io | cbor_event | — | direct |
| crates.io | cryptoxide | — | direct |
| crates.io | futures | — | direct |
| crates.io | hyper | — | direct |
| crates.io | log | — | direct |
| crates.io | quickcheck | — | direct |
| crates.io | rand | — | direct |
| crates.io | serde | — | direct |
| crates.io | serde_derive | — | direct |
| crates.io | serde_json | — | direct |
| crates.io | serde_yaml | — | direct |
| crates.io | tokio | — | direct |
| crates.io | tokio-codec | — | direct |
| crates.io | tokio-core | — | direct |
| crates.io | tokio-io | — | direct |
| crates.io | env_logger | — | indirect |
| crates.io | lazy_static | — | indirect |
| crates.io | unicode-normalization | — | indirect |
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.
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 v0.13.0 — full methodology · metrics wiki.
How one result sits in the wider record: aggregate statistics — crates.io.