Public record
Software health reportschema 0.11.0 · metrics 2.10.0 · 2026-07-17 15:24 UTC

ibm / fp-go

Functional programming library for Go 1.24+, inspired by fp-ts. Uses generic type aliases for a clean, composable API. Provides Option, Either, Result, IO, IOResult, Reader, and ReaderIOResult monads, plus optics (Lens, Prism, Traversal) for immutable data manipulation. Supports Functor, Applicative, and Monad abstractions with do-notation-style

GoApache-2.0★ 2,007 stars⑂ 80 forkssince Jul 2023View on GitHub ↗
KindLibraryCommand-line toolhow this is determined
#functional-programming#go#golang#library#monad#utility

ibm/fp-go holds a health index of 87 out of 100, placing it in the Excellent band. It scores highest on Vitality (94/100) and lowest on Security (58/100). It was last updated today. A single contributor accounts for most of its recent work.

87
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.

87
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 73 is calibrated to 87 on the published index scale (record calibration 2026-08-02).

Ownership

International Business MachinesOrganization
8,433 followers3,918 public repossince Feb 2012

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publish
Gogithub.com/IBM/fp-gov1.1.84-241211 days ago
Gogithub.com/IBM/fp-go/v2v2.3.81-2000 days ago

Metrics by category

Vitality

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

94Exceptional · 21% of overall

Development activity

90Excellent
How it's scored
36/36Push recency — last push 0 days ago
26.3/36Commit cadence — 38/52 weeks with commits
18/18Commit volume — 414 commits in the last year
10/10OpenSSF Scorecard: Maintained — 30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year414
human_commit_share—
days_since_last_push0
active_weeks_last_year38

Release discipline

100Exceptional
How it's scored
27/27Ships releases — 100 releases published
36/36Release recency — latest release 0 days ago
27/27Release cadence — a release every ~1.9 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count100
latest_release_tagv2.3.81
releases_from_tagsno
days_since_latest_release0
mean_days_between_releases1.9
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?

64Moderate · 17% of overall

Popularity & adoption

76Good
How it's scored
53.6/60Stars — 2,007 stars
15.8/25Forks — 80 forks
6.5/15Watchers — 16 watchers
Inputs used
forks80
stars2,007
watchers16
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

50Moderate
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
readme_badges—
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?

73Good · 23% of overall

Maintainer resilience (bus factor)

29At Risk
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
3.1/22.5Commit distribution — top contributor authored 86% of commits
13.5/13.5Contributor breadth — 18 contributors
3/10OpenSSF Scorecard: Contributors — project has 1 contributing companies or organizations -- score normalized to 3
Inputs used
bus_factor1
contributors_sampled18
top_contributor_share0.861

Issue & PR responsiveness

76Good
How it's scored
36.4/42Issue resolution — 87% of issues closed
29.4/30PR acceptance — 182/186 decided PRs merged
0/13Newcomer PR acceptance — no first-time contributor's PR decided in 30d
0/15OpenSSF Scorecard: Code-Review — Found 1/30 approved changesets -- score normalized to 0
Inputs used
merged_prs182
open_issues2
closed_issues13
prs_merged_7d—
prs_decided_7d—
prs_merged_30d—
prs_decided_30d—
issue_closed_ratio0.867
closed_unmerged_prs4
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

100Exceptional
How it's scored
30/30Ownership backing — organization-owned
0/20Verified domain — verified-domain status not read for this organization
25/25Owner reach — 8,433 followers of IBM
25/25Track record — 3,918 public repos, account ~14 yr old
Inputs used
followers8,433
owner_typeOrganization
is_verified—
owner_loginIBM
public_repos3,918
account_age_days5,259
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 2 package(s) on go
35/35Publish recency — latest publish 0 days ago
20/20Version history — 241 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagesgithub.com/IBM/fp-go, github.com/IBM/fp-go/v2
ecosystemsgo
any_deprecatedno
min_days_since_publish0

Engineering Quality

Are baseline engineering and documentation practices in place?

71Good · 19% of overall

Engineering practices

68Good
How it's scored
24/24CI workflows — 1 workflow(s)
24/24Tests present
0/16Linter config
0/9.6Pre-commit hooks
0/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests — 13 out of 13 merged PRs checked by a CI test -- score normalized to 10
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configno
has_precommit_configno

Documentation

75Good
How it's scored
30/30README
0/25Documentation directory
15/15Documentation / homepage site — https://github.com/IBM/fp-go/tree/main/v2
10/10Repository description
10/10Topics — 6 topics
10/10Wiki
Inputs used
topicsfunctional-programming, go, golang, library, monad, utility
has_wikiyes
homepagehttps://github.com/IBM/fp-go/tree/main/v2
docs_sitehttps://github.com/IBM/fp-go/tree/main/v2
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

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

58Moderate · 16% of overall

Security posture

58Moderate
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
2.5/2.5CI-Tests — 13 out of 13 merged PRs checked by a CI test -- score normalized to 10
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
0/7.5Code-Review — Found 1/30 approved changesets -- score normalized to 0
0.8/2.5Contributors — project has 1 contributing companies or organizations -- score normalized to 3
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
7.5/7.5Maintained — 30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
5/5Packaging — packaging workflow detected
1/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 2
0/5SAST — SAST tool is not run on all commits -- score normalized to 0
5/5Security-Policy — security policy file 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_evaluated17
scorecard_versionv5.5.0
checks_inconclusive1
scorecard_aggregate5.8
Excluded from scoring (no data or not applicable): 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.

82Excellent · 4% of overall

Agent context & guidance

100Exceptional
How it's scored
45/45Agent instructions — v2/AGENTS.md
15/15Machine-readable docs (llms.txt) — llms.txt present
0/40Legible commit history — no data
Inputs used
has_llms_txtyes
llms_txt_url—
legible_history_share—
agent_instruction_filesv2/AGENTS.md
agent_instruction_max_bytes11,626
Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.

Verify loop (build / test / typecheck)

55Moderate
How it's scored
0/18One-command bootstrap
22/22Automated tests
0/11Lint / format config
11/11Static type checking — Go (statically typed)
10/10Reproducible environment — lockfile
0/10Demonstrated agent practice — no data
0/8Automated maintenance — no data
2/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 2
Inputs used
has_nixno
has_testsyes
lockfilesgo.sum
has_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configno
typecheck_configs—
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.

Code legibility for models

100Exceptional
How it's scored
45/45Type-checkable code — Go (statically typed)
54.6/55Manageable file sizes — 18/2,495 source files over 60KB
Inputs used
primary_languageGo
largest_source_bytes193,847
source_files_sampled2,495
oversized_source_files18

Machine-readable interfaces

100Exceptional
How it's scored
0/40API schema (OpenAPI/GraphQL/proto) — not applicable to this kind of software
0/20MCP server — not applicable to this kind of software
40/40Runnable examples — examples, samples
Inputs used
example_dirsexamples, samples
has_mcp_signalno
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

2,007GitHub stars
18contributors
414commits, last 12 months
0days since last push
100releases
1bus factor
2open issues
Gopackage ecosystems

More detail

OpenSSF Scorecard 5.8 / 10
5.8aggregate

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 · 2026-07-17 15:24 UTC

10Binary-Artifactsno binaries found in the repo
0Branch-Protectionbranch protection not enabled on development/release branches
10CI-Tests13 out of 13 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0Code-ReviewFound 1/30 approved changesets -- score normalized to 0
3Contributorsproject has 1 contributing companies or organizations -- score normalized to 3
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
10Maintained30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
10Packagingpackaging workflow detected
2Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 2
0SASTSAST tool is not run on all commits -- score normalized to 0
10Security-Policysecurity policy file detected
n/aSigned-Releasesno releases found
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
10Vulnerabilities0 existing vulnerabilities detected
Direct dependencies 4
RegistryPackageVersion constraintManifest
Gogithub.com/stretchr/testifyv1.11.1go.mod
Gogithub.com/urfave/cli/v2v2.27.7go.mod
Gogithub.com/stretchr/testifyv1.11.1v2/go.mod
Gogithub.com/urfave/cli/v3v3.10.1v2/go.mod
All dependencies 35

Full resolved dependency set from the GitHub dependency graph: 3 direct and 32 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
Gogithub.com/stretchr/testifyv1.11.1direct
Gogithub.com/urfave/cli/v2v2.27.7direct
Gogithub.com/urfave/cli/v3v3.10.1direct
Gogithub.com/cpuguy83/go-md2man/v2v2.0.7indirect
Gogithub.com/davecgh/go-spewv1.1.1indirect
Gogithub.com/dustin/go-humanizev1.0.1indirect
Gogithub.com/google/jsonschema-gov0.4.3indirect
Gogithub.com/google/uuidv1.6.0indirect
Gogithub.com/iancoleman/strcasev0.3.0indirect
Gogithub.com/ibm/fp-go/v2v2.3.80indirect
Gogithub.com/kr/prettyv0.1.0indirect
Gogithub.com/kr/textv0.2.0indirect
Gogithub.com/mattn/go-isattyv0.0.22indirect
Gogithub.com/modelcontextprotocol/go-sdkv1.6.1indirect
Gogithub.com/ncruces/go-strftimev1.0.0indirect
Gogithub.com/otiai10/copyv1.14.1indirect
Gogithub.com/otiai10/mintv1.6.3indirect
Gogithub.com/pmezard/go-difflibv1.0.0indirect
Gogithub.com/remyoudompheng/bigfftv0.0.0-20230129092748-24d4a6f8daecindirect
Gogithub.com/russross/blackfriday/v2v2.1.0indirect
Gogithub.com/segmentio/asmv1.2.1indirect
Gogithub.com/segmentio/encodingv0.5.4indirect
Gogithub.com/xrash/smetricsv0.0.0-20240521201337-686a1a2994c1indirect
Gogithub.com/yosida95/uritemplate/v3v3.0.2indirect
Gogolang.org/x/modv0.38.0indirect
Gogolang.org/x/oauth2v0.36.0indirect
Gogolang.org/x/syncv0.22.0indirect
Gogolang.org/x/sysv0.47.0indirect
Gogolang.org/x/toolsv0.48.0indirect
Gogopkg.in/check.v1v1.0.0-20180628173108-788fd7840127indirect
Gogopkg.in/yaml.v3v3.0.1indirect
Gomodernc.org/libcv1.74.1indirect
Gomodernc.org/mathutilv1.7.1indirect
Gomodernc.org/memoryv1.11.0indirect
Gomodernc.org/sqlitev1.54.0indirect
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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 v0.11.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statistics — Go.