Public record
Software health reportschema 0.23.0 · metrics 1.13.0 · 2026-07-21 20:59 UTC

chatmail / async-imap

Async IMAP implementation in Rust

RustApache-2.0★ 145 stars⑂ 36 forkssince Nov 2019View on GitHub ↗

chatmail/async-imap holds a health index of 55 out of 100, placing it in the Moderate band. It scores highest on Sustainability & Governance (65/100) and lowest on AI Readiness (42/100). It was last updated 1 day ago. 2 contributors account for most of its recent work.

55
overall / 100
Moderate

Software health index

Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At risk ceiling of 49. AI Readiness sits outside the overall score.

55
Excellent85-100Exemplary; meets essentially all checked criteria
Good70-84Healthy; minor gaps
Moderate50-69Acceptable with notable gaps; review recommended
At risk30-49Significant weaknesses; adoption warrants caution
Critical1-29Severe 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.

Ownership

chatmailOrganization
158 followers29 public repossince Oct 2023

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
crates.ioasync-imappoints to another repo — not scored0.11.3168,438304 days agoemailimapnetwork-programming

Metrics by category

Vitality

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

64Moderate · 22% of overall
How it's scored
36/36Push recency — last push 1 days ago
4.8/36Commit cadence — 7/52 weeks with commits
10/18Commit volume — 12 commits in the last year
3/10OpenSSF Scorecard: Maintained — 4 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 3
Inputs used
commits_last_year12
human_commit_share1
days_since_last_push1
active_weeks_last_year7
How it's scored
16.2/27Ships releases — 26 version tags (no GitHub releases)
36/36Release recency — latest release 4 days ago
19.8/27Release cadence — a release every ~108.4 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count26
latest_release_tagv0.11.3
releases_from_tagsyes
days_since_latest_release4
mean_days_between_releases108.4
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?

51Moderate · 18% of overall
How it's scored
35/60Stars — 145 stars
12.9/25Forks — 36 forks
4.3/15Watchers — 7 watchers
Inputs used
forks36
stars145
watchers7
growth_stateorganic
growth_factor_pct100
How it's scored
22.5/22.5README
22.5/22.5License — recognized license (Apache-2.0)
0/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
has_contributingno
has_issue_templateno
has_code_of_conductno
has_pull_request_templateno

Sustainability & Governance

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

65Moderate · 24% of overall
How it's scored
25.2/54Bus factor — 2 contributor(s) cover half of all commits
13.2/22.5Commit distribution — top contributor authored 41% of commits
13.5/13.5Contributor breadth — 16 contributors
10/10OpenSSF Scorecard: Contributors — project has 30 contributing companies or organizations
Inputs used
bus_factor2
contributors_sampled16
top_contributor_share0.412
How it's scored
30.6/46.8Issue resolution — 66% of issues closed
34.4/38.3PR acceptance — 71/79 decided PRs merged
6/15OpenSSF Scorecard: Code-Review — Found 12/27 approved changesets -- score normalized to 4
Inputs used
merged_prs71
open_issues19
closed_issues36
issue_closed_ratio0.655
closed_unmerged_prs8
How it's scored
30/30Ownership backing — organization-owned
0/20Verified domain
15.8/25Owner reach — 158 followers of chatmail
16.2/25Track record — 29 public repos, account ~2 yr old
Inputs used
followers158
owner_typeOrganization
is_verified
owner_loginchatmail
public_repos29
account_age_days997

Engineering Quality

Are baseline engineering and documentation practices in place?

46At risk · 20% of overall
How it's scored
24/24CI workflows — 1 workflow(s)
0/24Tests present
0/16Linter config
0/9.6Pre-commit hooks
0/6.4.editorconfig
12/20OpenSSF Scorecard: CI-Tests — 8 out of 12 merged PRs checked by a CI test -- score normalized to 6
Inputs used
has_ciyes
has_testsno
has_editorconfigno
has_linter_configno
has_precommit_configno

Documentation

60Moderate
How it's scored
30/30README
0/25Documentation directory
0/15Documentation / homepage site
10/10Repository description
10/10Topics — 5 topics
10/10Wiki
Inputs used
topicsasync, chatmail, email, imap, rust
has_wikiyes
homepage
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

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

43At risk · 16% of overall
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0/7.5Branch-Protection — no data
1.5/2.5CI-Tests — 8 out of 12 merged PRs checked by a CI test -- score normalized to 6
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
3/7.5Code-Review — Found 12/27 approved changesets -- score normalized to 4
2.5/2.5Contributors — project has 30 contributing companies or organizations
10/10Dangerous-Workflow — no dangerous workflow patterns detected
0/7.5Dependency-Update-Tool — no update tool detected
0/5Fuzzing — project is not fuzzed
2.5/2.5License — license file detected
2.2/7.5Maintained — 4 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 3
0/5Packaging — no data
0/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
0/5SAST — SAST tool is not run on all commits -- score normalized to 0
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
7.5/7.5Vulnerabilities — 0 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate4.3
Excluded from scoring (no data or not applicable): branch_protection, packaging, signed_releases. Remaining weights renormalized.

AI Readiness

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.

42At risk · 0% of overall
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
40/40Legible commit history — 76 of 100 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
legible_history_share0.76
agent_instruction_files
agent_instruction_max_bytes
How it's scored
12.6/18One-command bootstrap — Cargo.toml, examples/Cargo.toml (toolchain convention, no task runner)
0/22Automated tests
0/11Lint / format config
11/11Static type checking — Rust (statically typed)
0/10Reproducible environment
0/10Demonstrated agent practice — no agent-authored commits among the last 100
0/8Automated maintenance — no automated dependency updates observed
0/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixno
has_testsno
lockfiles
has_dockerfileno
typed_languageyes
bootstrap_files
has_devcontainerno
has_linter_configno
typecheck_configs
agent_commit_share0
toolchain_manifestsCargo.toml, examples/Cargo.toml
dependency_bot_commit_share0
How it's scored
45/45Type-checkable code — Rust (statically typed)
52.9/55Manageable file sizes — 1/26 source files over 60KB
Inputs used
primary_languageRust
largest_source_bytes110,905
source_files_sampled26
oversized_source_files1
How it's scored
0/40API schema (OpenAPI/GraphQL/proto)
0/20MCP server
40/40Runnable examples — examples
Inputs used
example_dirsexamples
has_mcp_signalno
api_schema_files

Key facts

145GitHub stars
16contributors
12commits, last 12 months
1days since last push
26releases
2bus factor
19open issues
crates.iopackage ecosystems

Data collection warnings

  • crates package 'async-imap' points at a different repository (https://github.com/async-email/async-imap); excluded from ecosystem scoring
  • deps.dev does not index crates:async-imap@0.11.3; advisories assessed against the repository dependency graph instead
  • No resolved dependencies carried a version and a supported ecosystem

More detail

Star and fork history 145 ★ / 36 ⇿
145Stars
36Forks
25Releases

When each star and fork was added, collected from GitHub and bucketed by day. Cumulative growth sits directly above the daily additions it is made of, so the two read against each other: steady organic accretion looks nothing like an abrupt, short-lived burst. Where that difference is measurable, it is reported as growth authenticity.

02550751001251501453342019-112023-032026-07
Major 0Minor 11Patch 14

Each point covers 7 days.

OpenSSF Scorecard 4.3 / 10
4.3aggregate

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 · 2026-07-21 20:59 UTC

10Binary-Artifactsno binaries found in the repo
n/aBranch-Protectioninternal 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
6CI-Tests8 out of 12 merged PRs checked by a CI test -- score normalized to 6
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
4Code-ReviewFound 12/27 approved changesets -- score normalized to 4
10Contributorsproject has 30 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
0Dependency-Update-Toolno update tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
3Maintained4 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 3
n/aPackagingpackaging workflow not detected
0Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
0SASTSAST tool is not run on all commits -- score normalized to 0
0Security-Policysecurity policy file not detected
n/aSigned-Releasesno releases found
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
10Vulnerabilities0 existing vulnerabilities detected
Direct dependencies 16
RegistryPackageVersion constraintManifest
crates.ioasync-channel2.0.0Cargo.toml
crates.ioasync-compression0.4.15Cargo.toml
crates.ioasync-std1.8.0Cargo.toml
crates.iobase640.22.1Cargo.toml
crates.iobytes1Cargo.toml
crates.iochrono0.4Cargo.toml
crates.iofutures0.3.15Cargo.toml
crates.ioimap-proto0.16.4Cargo.toml
crates.iolog0.4.8Cargo.toml
crates.ionom7.0Cargo.toml
crates.iopin-project1Cargo.toml
crates.iopin-utils0.1.0-alpha.4Cargo.toml
crates.ioself_cell1.0.1Cargo.toml
crates.iostop-token0.7Cargo.toml
crates.iothiserror1.0.9Cargo.toml
crates.iotokio1Cargo.toml
All dependencies 20

Full resolved dependency set from the GitHub dependency graph: 16 direct and 4 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
crates.ioasync-channeldirect
crates.ioasync-compressiondirect
crates.ioasync-stddirect
crates.iobase64direct
crates.iobytesdirect
crates.iochronodirect
crates.iofuturesdirect
crates.ioimap-protodirect
crates.iologdirect
crates.ionomdirect
crates.iopin-projectdirect
crates.iopin-utilsdirect
crates.ioself_celldirect
crates.iostop-tokendirect
crates.iothiserrordirect
crates.iotokiodirect
crates.ioanyhowindirect
crates.ioasync-native-tlsindirect
crates.ioasync-smtpindirect
crates.iopretty_assertionsindirect
Dependency advisories not assessed

Advisory matching could not run for this report: No resolved dependencies carried a version and a supported ecosystem

Raw JSON report machine-readable
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          "headline": "refactor!: use try_next() more",
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          "body": "This can be useful for example to get access\nto the peer address of the underlying TCP stream\nfor logging purposes.",
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          "body": "Otherwise the test fails if BLOCK_SIZE constant is reduced.",
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          "body": "`write()` should not return Ok without writing anything,\nbut the documentation is not clear on this\nand underlying implementation may be wrong\nas IMAP can be run over various streams,\ne.g. compressed, encrypted, proxied.\nIt is safer to use `write_all()` everywhere,\neven when we write a single byte.",
          "is_bot": false,
          "headline": "fix: use write_all() to write space after a tag",
          "author_name": "link2xt",
          "author_login": "link2xt",
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          "headline": "chore(release): prepare for 0.10.3",
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          "author_login": "link2xt",
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          "headline": "fix: Don't panic if the server returns 0 as the quota limit (#116)",
          "author_name": "Hocuri",
          "author_login": "Hocuri",
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          "body": "This will make CI green again",
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          "author_login": "Hocuri",
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          "body": "The check for `unsolicited.is_full()`\nat the beginning of `handle_unilateral`\nis not sufficient if the function is called\nfrom multiple threads parallel.\nThis normally should not happen,\nbut not guaranteed.\n\nInstead of checking if the channel is full in advance,\nuse `tr_send` and ignore the error\nif the channel happens to be full\nwhen we try to send into it.\n\nWe also ignore the error when the channel\nis closed instead of panic\nbecause the library should never panic.",
          "is_bot": false,
          "headline": "fix: make handle_unilateral non-async",
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          "is_bot": false,
          "headline": "chore(release): prepare for 0.10.2",
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          "headline": "feat: implement IMAP COMPRESS",
          "author_name": "link2xt",
          "author_login": "link2xt",
          "committed_at": "2024-10-14T13:34:07Z",
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          "headline": "chore: sort dependencies",
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          "headline": "chore: remove unused azure-pipelines.yml",
          "author_name": "link2xt",
          "author_login": "link2xt",
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          "headline": "chore: fix clippy warnings",
          "author_name": "link2xt",
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          "body": null,
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          "headline": "chore(release): prepare for 0.10.1",
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          "is_bot": false,
          "headline": "fix: correctly parse unsolicited APPEND responses",
          "author_name": "link2xt",
          "author_login": "link2xt",
          "committed_at": "2024-09-09T21:01:34Z",
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          "is_bot": false,
          "headline": "chore(release): prepare for 0.10.0",
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          "body": "Otherwise users get error messages\nwhere unparseable server response\nis printed as an array of bytes\nsuch as\n[50, 50, 48, 32, 109, 97, 105, 108, 46, 101, 120, 97, 109, 112, 108, 101, 46, 111, 114, 103, 32, 69, 83, 77, 84, 80, 32, 80, 111, 115, 116, 99, 111, 119]",
          "is_bot": false,
          "headline": "Print unparseable input as a string",
          "author_name": "link2xt",
          "author_login": "link2xt",
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          "is_bot": false,
          "headline": "feat: support optional arguments for APPEND command",
          "author_name": "link2xt",
          "author_login": "link2xt",
          "committed_at": "2024-08-29T00:50:56Z",
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          "body": null,
          "is_bot": false,
          "headline": "chore(release): prepare for 0.9.7",
          "author_name": "link2xt",
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          "is_bot": false,
          "headline": "fix: parse NIL metadata response",
          "author_name": "link2xt",
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          "is_bot": false,
          "headline": "feat: add GETMETADATA command",
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          "body": "This allows to use shorter timeouts\nto detect lost connection earlier.\nE.g. if timeout is set to 5 minutes\nand the server sends keepalives every 2 minutes,\nIDLE will never be interrupted.\nIf connection is lost, it will be noticed not later than 5 minutes later.\n\n`wait` method which does not accept the timeout\nnow uses default timeout of 24 hours,\nbut should probably be deprecated.",
          "is_bot": false,
          "headline": "fix: reset IDLE timeout when keepalive is received",
          "author_name": "link2xt",
          "author_login": "link2xt",
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          "headline": "Fix \"license\" field in Cargo.toml",
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          "headline": "chore(release): prepare for 0.9.4",
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          "headline": "test: fix broken tests that worked because of ignored errors",
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          "headline": "fix: do not filter out the errors when parsing the FETCH response",
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          "is_bot": false,
          "headline": "test: unexpected EOF on FETCH response should result in an error",
          "author_name": "link2xt",
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          "headline": "chore(release): prepare for v0.9.3",
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          "headline": "chore(release): prepare for v0.9.2",
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          "headline": "Add more STATUS tests.",
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          "body": "STATUS response is not the same as SELECT response\nand has to be parsed differently.",
          "is_bot": false,
          "headline": "Fix STATUS response parsing",
          "author_name": "link2xt",
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          "is_bot": false,
          "headline": "docs: remove outdated reference to rustls.rs example",
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          "headline": "fix: replace byte pool with bytes to fix memory leak",
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          "headline": "chore: fix beta (1.73) clippy",
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          "headline": "fix: switch from `ouroboros` to `self_cell`",
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                "key": "maintained",
                "name": "Maintained",
                "detail": "4 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 3",
                "points": 2.2,
                "status": "partial",
                "details": [],
                "max_points": 7.5
              },
              {
                "key": "packaging",
                "name": "Packaging",
                "detail": "packaging workflow not detected",
                "points": 0,
                "status": "excluded",
                "details": [
                  {
                    "code": "no_data",
                    "params": {}
                  }
                ],
                "max_points": 5
              },
              {
                "key": "pinned_dependencies",
                "name": "Pinned-Dependencies",
                "detail": "dependency not pinned by hash detected -- score normalized to 0",
                "points": 0,
                "status": "missed",
                "details": [],
                "max_points": 5
              },
              {
                "key": "sast",
                "name": "SAST",
                "detail": "SAST tool is not run on all commits -- score normalized to 0",
                "points": 0,
                "status": "missed",
                "details": [],
                "max_points": 5
              },
              {
                "key": "security_policy",
                "name": "Security-Policy",
                "detail": "security policy file not detected",
                "points": 0,
                "status": "missed",
                "details": [],
                "max_points": 5
              },
              {
                "key": "signed_releases",
                "name": "Signed-Releases",
                "detail": "no releases found",
                "points": 0,
                "status": "excluded",
                "details": [
                  {
                    "code": "no_data",
                    "params": {}
                  }
                ],
                "max_points": 7.5
              },
              {
                "key": "token_permissions",
                "name": "Token-Permissions",
                "detail": "detected GitHub workflow tokens with excessive permissions",
                "points": 0,
                "status": "missed",
                "details": [],
                "max_points": 7.5
              },
              {
                "key": "vulnerabilities",
                "name": "Vulnerabilities",
                "detail": "0 existing vulnerabilities detected",
                "points": 7.5,
                "status": "met",
                "details": [],
                "max_points": 7.5
              }
            ]
          },
          {
            "key": "high_risk_jurisdiction_exposure",
            "band": "excellent",
            "name": "High-Risk Jurisdiction Exposure",
            "note": "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.",
            "notes": [
              {
                "code": "jurisdiction_evidence_limits",
                "params": {}
              }
            ],
            "value": 100,
            "inputs": {
              "meaning": "self-published location evidence; not nationality or citizenship",
              "red_flag": false,
              "exposures": [],
              "policy_countries": [
                "Russia",
                "Iran",
                "North Korea"
              ],
              "review_only_matches": 0,
              "assessed_self_published_locations": 21
            },
            "components": [
              {
                "key": "policy_exposure_multiplier",
                "name": "Policy exposure multiplier",
                "detail": "no confirmed policy-scope location match",
                "points": 100,
                "status": "met",
                "details": [
                  {
                    "code": "jurisdiction_no_match",
                    "params": {}
                  }
                ],
                "max_points": 100
              }
            ]
          }
        ],
        "description": "Are visible security and supply-chain practices strong, with no malicious dependency and no unresolved high-risk jurisdiction exposure?"
      },
      {
        "key": "ai_readiness",
        "band": "at_risk",
        "name": "AI Readiness",
        "value": 42,
        "weight": 0,
        "metrics": [
          {
            "key": "ai_agent_context",
            "band": "at_risk",
            "name": "Agent context & guidance",
            "note": null,
            "notes": [],
            "value": 40,
            "inputs": {
              "has_llms_txt": false,
              "legible_history_share": 0.76,
              "agent_instruction_files": [],
              "agent_instruction_max_bytes": null
            },
            "components": [
              {
                "key": "agent_instructions",
                "name": "Agent instructions",
                "detail": "no CLAUDE.md / AGENTS.md / editor rules",
                "points": 0,
                "status": "missed",
                "details": [
                  {
                    "code": "no_agent_instructions",
                    "params": {}
                  }
                ],
                "max_points": 45
              },
              {
                "key": "machine_readable_docs_llms_txt",
                "name": "Machine-readable docs (llms.txt)",
                "detail": null,
                "points": 0,
                "status": "missed",
                "details": [],
                "max_points": 15
              },
              {
                "key": "legible_commit_history",
                "name": "Legible commit history",
                "detail": "76 of 100 human commits state their intent (structured subject or explanatory body)",
                "points": 40,
                "status": "met",
                "details": [
                  {
                    "code": "legible_history",
                    "params": {
                      "legible": 76,
                      "sampled": 100
                    }
                  }
                ],
                "max_points": 40
              }
            ]
          },
          {
            "key": "ai_verify_loop",
            "band": "critical",
            "name": "Verify loop (build / test / typecheck)",
            "note": null,
            "notes": [],
            "value": 24,
            "inputs": {
              "has_nix": false,
              "has_tests": false,
              "lockfiles": [],
              "has_dockerfile": false,
              "typed_language": true,
              "bootstrap_files": [],
              "has_devcontainer": false,
              "has_linter_config": false,
              "typecheck_configs": [],
              "agent_commit_share": 0,
              "toolchain_manifests": [
                "Cargo.toml",
                "examples/Cargo.toml"
              ],
              "dependency_bot_commit_share": 0
            },
            "components": [
              {
                "key": "one_command_bootstrap",
                "name": "One-command bootstrap",
                "detail": "Cargo.toml, examples/Cargo.toml (toolchain convention, no task runner)",
                "points": 12.6,
                "status": "partial",
                "details": [
                  {
                    "code": "toolchain_convention",
                    "params": {
                      "files": "Cargo.toml, examples/Cargo.toml"
                    }
                  }
                ],
                "max_points": 18
              },
              {
                "key": "automated_tests",
                "name": "Automated tests",
                "detail": null,
                "points": 0,
                "status": "missed",
                "details": [],
                "max_points": 22
              },
              {
                "key": "lint_format_config",
                "name": "Lint / format config",
                "detail": null,
                "points": 0,
                "status": "missed",
                "details": [],
                "max_points": 11
              },
              {
                "key": "static_type_checking",
                "name": "Static type checking",
                "detail": "Rust (statically typed)",
                "points": 11,
                "status": "met",
                "details": [
                  {
                    "code": "statically_typed_language",
                    "params": {
                      "language": "Rust"
                    }
                  }
                ],
                "max_points": 11
              },
              {
                "key": "reproducible_environment",
                "name": "Reproducible environment",
                "detail": null,
                "points": 0,
                "status": "missed",
                "details": [],
                "max_points": 10
              },
              {
                "key": "demonstrated_agent_practice",
                "name": "Demonstrated agent practice",
                "detail": "no agent-authored commits among the last 100",
                "points": 0,
                "status": "missed",
                "details": [
                  {
                    "code": "no_agent_authored_commits",
                    "params": {
                      "sampled": 100
                    }
                  }
                ],
                "max_points": 10
              },
              {
                "key": "automated_maintenance",
                "name": "Automated maintenance",
                "detail": "no automated dependency updates observed",
                "points": 0,
                "status": "missed",
                "details": [
                  {
                    "code": "no_dependency_automation",
                    "params": {}
                  }
                ],
                "max_points": 8
              },
              {
                "key": "openssf_scorecard_pinned_dependencies",
                "name": "OpenSSF Scorecard: Pinned-Dependencies",
                "detail": "dependency not pinned by hash detected -- score normalized to 0",
                "points": 0,
                "status": "missed",
                "details": [],
                "max_points": 10
              }
            ]
          },
          {
            "key": "ai_code_legibility",
            "band": "excellent",
            "name": "Code legibility for models",
            "note": null,
            "notes": [],
            "value": 98,
            "inputs": {
              "primary_language": "Rust",
              "largest_source_bytes": 110905,
              "source_files_sampled": 26,
              "oversized_source_files": 1
            },
            "components": [
              {
                "key": "type_checkable_code",
                "name": "Type-checkable code",
                "detail": "Rust (statically typed)",
                "points": 45,
                "status": "met",
                "details": [
                  {
                    "code": "statically_typed_language",
                    "params": {
                      "language": "Rust"
                    }
                  }
                ],
                "max_points": 45
              },
              {
                "key": "manageable_file_sizes",
                "name": "Manageable file sizes",
                "detail": "1/26 source files over 60KB",
                "points": 52.9,
                "status": "partial",
                "details": [
                  {
                    "code": "oversized_source_files",
                    "params": {
                      "kb": 60,
                      "sampled": 26,
                      "oversized": 1
                    }
                  }
                ],
                "max_points": 55
              }
            ]
          },
          {
            "key": "ai_interfaces",
            "band": "at_risk",
            "name": "Machine-readable interfaces",
            "note": null,
            "notes": [],
            "value": 40,
            "inputs": {
              "example_dirs": [
                "examples"
              ],
              "has_mcp_signal": false,
              "api_schema_files": []
            },
            "components": [
              {
                "key": "api_schema_openapi_graphql_proto",
                "name": "API schema (OpenAPI/GraphQL/proto)",
                "detail": null,
                "points": 0,
                "status": "missed",
                "details": [],
                "max_points": 40
              },
              {
                "key": "mcp_server",
                "name": "MCP server",
                "detail": null,
                "points": 0,
                "status": "missed",
                "details": [],
                "max_points": 20
              },
              {
                "key": "runnable_examples",
                "name": "Runnable examples",
                "detail": "examples",
                "points": 40,
                "status": "met",
                "details": [
                  {
                    "code": "file_list",
                    "params": {
                      "files": "examples"
                    }
                  }
                ],
                "max_points": 40
              }
            ]
          }
        ],
        "description": "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."
      }
    ],
    "metrics_version": "1.13.0"
  },
  "warnings": [
    "crates package 'async-imap' points at a different repository (https://github.com/async-email/async-imap); excluded from ecosystem scoring",
    "deps.dev does not index crates:async-imap@0.11.3; advisories assessed against the repository dependency graph instead",
    "No resolved dependencies carried a version and a supported ecosystem"
  ],
  "report_type": "repository",
  "generated_at": "2026-07-21T20:59:54.143719Z",
  "schema_version": "0.23.0",
  "badge_url": "https://raw.githubusercontent.com/inspect-software/badges/main/v1/c/chatmail/async-imap.svg",
  "full_name": "chatmail/async-imap",
  "license_state": "standard",
  "license_spdx": "Apache-2.0"
}

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 v1.13.0, schema v0.23.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statisticscrates.io.