Public recordGood
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-14 07:08 UTC
numaproj / numaflow-java
Numaflow Java SDK
numaproj/numaflow-java holds a health index of 65 out of 100, placing it in the Good band. It scores highest on Sustainability & Governance (74/100) and lowest on Security (41/100). It was last updated 10 days ago. 2 contributors account for most of its recent work.
65
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.
65
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 60 is calibrated to 65 on the published index scale (record calibration 2026-08-02).
Ownership
numaprojOrganization
152 followers18 public repossince Apr 2022
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 |
|---|---|---|---|---|---|
| Maven | io.numaproj.numaflow:numaflow-java | 0.13.0 | - | 26 | 56 days ago |
Metrics by category
Vitality
Is the project alive — is code being written and are releases shipping?
68
Development activity
52Moderate
How it's scored
| 28.8/36 | Push recency — last push 10 days ago |
| 8.3/36 | Commit cadence — 12/52 weeks with commits |
| 10.3/18 | Commit volume — 13 commits in the last year |
| 5/10 | OpenSSF Scorecard: Maintained — 6 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 5 |
Inputs used
| commits_last_year | 13 |
| human_commit_share | 1 |
| days_since_last_push | 10 |
| active_weeks_last_year | 12 |
Release discipline
92Excellent
How it's scored
| 27/27 | Ships releases — 32 releases published |
| 36/36 | Release recency — latest release 56 days ago |
| 19.8/27 | Release cadence — a release every ~82.4 days |
| 0/10 | OpenSSF Scorecard: Signed-Releases — no data |
Inputs used
| releases_count | 32 |
| latest_release_tag | v0.13.0 |
| releases_from_tags | no |
| days_since_latest_release | 56 |
| mean_days_between_releases | 82.4 |
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?
44
Popularity & adoption
38Weak
How it's scored
| 23.2/60 | Stars — 28 stars |
| 9/25 | Forks — 13 forks |
| 6/15 | Watchers — 13 watchers |
Inputs used
| forks | 13 |
| stars | 28 |
| watchers | 13 |
| growth_state | unverified |
| growth_factor_pct | 100 |
| growth_unverified_reason | no_history |
Community health
50Moderate
How it's scored
| 22.5/22.5 | README |
| 22.5/22.5 | License — recognized license (Apache-2.0) |
| 0/18 | 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 | 4 |
| has_contributing | no |
| has_issue_template | no |
| has_code_of_conduct | no |
| readme_badge_services | github.com, shields.io |
| has_pull_request_template | no |
Sustainability & Governance
Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?
74
Maintainer resilience (bus factor)
61Moderate
How it's scored
| 25.2/54 | Bus factor — 2 contributor(s) cover half of all commits |
| 12.2/22.5 | Commit distribution — top contributor authored 46% of commits |
| 13.5/13.5 | Contributor breadth — 16 contributors |
| 10/10 | OpenSSF Scorecard: Contributors — project has 3 contributing companies or organizations -- score normalized to 10 |
Inputs used
| bus_factor | 2 |
| contributors_sampled | 16 |
| top_contributor_share | 0.457 |
Issue & PR responsiveness
80Excellent
How it's scored
| 27.4/42 | Issue resolution — 65% of issues closed |
| 27.6/30 | PR acceptance — 160/174 decided PRs merged |
| 0/13 | Newcomer PR acceptance — no first-time contributor's PR decided in 30d |
| 15/15 | OpenSSF Scorecard: Code-Review — all changesets reviewed |
Inputs used
| merged_prs | 160 |
| open_issues | 17 |
| closed_issues | 32 |
| prs_merged_7d | 0 |
| prs_decided_7d | 0 |
| prs_merged_30d | 2 |
| prs_decided_30d | 2 |
| issue_closed_ratio | 0.653 |
| closed_unmerged_prs | 14 |
| first_time_authors_30d | 0 |
| first_time_prs_merged_30d | 0 |
| first_time_prs_decided_30d | 0 |
Excluded from scoring (no data or not applicable): Newcomer PR acceptance. Remaining weights renormalized.
Ownership & stewardship
64Moderate
How it's scored
| 30/30 | Ownership backing — organization-owned |
| 0/20 | Verified domain |
| 15.7/25 | Owner reach — 152 followers of numaproj |
| 18.2/25 | Track record — 18 public repos, account ~4 yr old |
Inputs used
| followers | 152 |
| owner_type | Organization |
| is_verified | no |
| owner_login | numaproj |
| public_repos | 18 |
| account_age_days | 1,622 |
Package maintenance
100Exceptional
How it's scored
| 25/25 | Published & resolvable — 1 package(s) on maven |
| 35/35 | Publish recency — latest publish 56 days ago |
| 20/20 | Version history — 26 published versions |
| 20/20 | Not deprecated — active, not deprecated or yanked |
Inputs used
| packages | io.numaproj.numaflow:numaflow-java |
| ecosystems | maven |
| any_deprecated | no |
| min_days_since_publish | 56 |
Engineering Quality
Are baseline engineering and documentation practices in place?
62
Engineering practices
64Moderate
How it's scored
| 24/24 | CI workflows — 3 workflow(s) |
| 24/24 | Tests present |
| 0/16 | Linter config |
| 0/9.6 | Pre-commit hooks |
| 6.4/6.4 | .editorconfig |
| 10/20 | OpenSSF Scorecard: CI-Tests — 16 out of 30 merged PRs checked by a CI test -- score normalized to 5 |
Inputs used
| has_ci | yes |
| has_tests | yes |
| has_editorconfig | yes |
| has_linter_config | no |
| has_precommit_config | no |
Documentation
60Moderate
How it's scored
| 30/30 | README |
| 0/25 | Documentation directory |
| 0/15 | Documentation / homepage site |
| 10/10 | Repository description |
| 10/10 | Topics — 3 topics |
| 10/10 | Wiki |
Inputs used
| topics | java, numaflow, numaflow-sdk |
| 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?
41
Security posture
44Weak
How it's scored
| 7.5/7.5 | Binary-Artifacts — no binaries found in the repo |
| 0/7.5 | Branch-Protection — no data |
| 1.2/2.5 | CI-Tests — 16 out of 30 merged PRs checked by a CI test -- score normalized to 5 |
| 0/2.5 | CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected |
| 7.5/7.5 | Code-Review — all changesets reviewed |
| 2.5/2.5 | Contributors — project has 3 contributing companies or organizations -- score normalized to 10 |
| 10/10 | Dangerous-Workflow — no dangerous workflow patterns detected |
| 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 |
| 3.8/7.5 | Maintained — 6 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 5 |
| 5/5 | Packaging — packaging workflow detected |
| 0/5 | Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0 |
| 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 — detected GitHub workflow tokens with excessive permissions |
| 0/7.5 | Vulnerabilities — 43 existing vulnerabilities detected |
Inputs used
| source | openssf_scorecard |
| checks_evaluated | 16 |
| scorecard_version | v5.5.0 |
| checks_inconclusive | 2 |
| scorecard_aggregate | 4.4 |
Excluded from scoring (no data or not applicable): Branch-Protection, Signed-Releases. Remaining weights renormalized.
Dependency advisories
27At Risk
How it's scored
| 8.9/35 | Direct dependencies free of known advisories — 4 affected: com.fasterxml.jackson.core:jackson-databind 2.19.0 (high 8.1), io.netty:netty-codec-http2 4.2.1.Final (high 7.5), io.netty:netty-transport-native-epoll 4.2.1.Final (moderate 4.0), +1 more |
| 3.3/25 | Indirect dependencies free of known advisories — 7 affected: io.netty:netty-handler 4.2.1.Final (critical 9.1), com.fasterxml.jackson.core:jackson-core 2.19.0 (high 7.5), io.netty:netty-codec 4.1.110.Final (high 7.5), +4 more |
| 14.9/40 | No advisories left outstanding — 10 advisory-carrying package(s) unaddressed past 90 days; oldest published 396 days ago |
Inputs used
| source | osv |
| advisories | 48 |
| affected_packages | 11 |
| assessed_packages | 53 |
| unassessed_packages | 0 |
| affected_by_severity | critical 1, high 7, moderate 3 |
| direct_affected_packages | 4 |
Matched the maven:io.numaproj.numaflow:numaflow-java@0.13.0 runtime dependency closure — what installing the published package pulls in — 53 packages. Reachability is not analyzed.
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.
60
Agent context & guidance
40Weak
How it's scored
| 0/45 | Agent instructions — no CLAUDE.md / AGENTS.md / editor rules |
| 0/15 | Machine-readable docs (llms.txt) |
| 40/40 | Legible commit history — 100 of 100 human commits state their intent (structured subject or explanatory body) |
Inputs used
| has_llms_txt | no |
| llms_txt_url | — |
| legible_history_share | 1 |
| agent_instruction_files | — |
| agent_instruction_max_bytes | — |
How it's scored
| 12.6/18 | One-command bootstrap — examples/pom.xml, pom.xml (toolchain convention, no task runner) |
| 22/22 | Automated tests |
| 0/11 | Lint / format config |
| 11/11 | Static type checking — Java (statically typed) |
| 0/10 | Reproducible environment |
| 0/10 | Demonstrated agent practice — no agent-authored commits among the last 100 |
| 0/8 | Automated maintenance — no automated dependency updates observed |
| 0/10 | OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0 |
Inputs used
| has_nix | no |
| has_tests | yes |
| lockfiles | — |
| has_dockerfile | no |
| typed_language | yes |
| bootstrap_files | — |
| has_devcontainer | no |
| has_linter_config | no |
| typecheck_configs | — |
| agent_commit_share | 0 |
| toolchain_manifests | examples/pom.xml, pom.xml |
| dependency_bot_commit_share | 0 |
Code legibility for models
100Exceptional
How it's scored
| 45/45 | Type-checkable code — Java (statically typed) |
| 54.8/55 | Manageable file sizes — 1/304 source files over 60KB |
Inputs used
| primary_language | Java |
| largest_source_bytes | 150,960 |
| source_files_sampled | 304 |
| oversized_source_files | 1 |
Machine-readable interfaces
100Exceptional
How it's scored
| 40/40 | API schema (OpenAPI/GraphQL/proto) — src/main/proto/accumulator/v1/accumulator.proto, src/main/proto/common/metadata.proto, src/main/proto/common/nack_options.proto, src/main/proto/map/v1/map.proto, src/main/proto/reduce/v1/reduce.proto, src/main/proto/serving/v1/store.proto, src/main/proto/sessionreduce/v1/sessionreduce.proto, src/main/proto/sideinput/v1/sideinput.proto, src/main/proto/sink/v1/sink.proto, src/main/proto/source/v1/source.proto, src/main/proto/sourcetransform/v1/sourcetransformer.proto |
| 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 | src/main/proto/accumulator/v1/accumulator.proto, src/main/proto/common/metadata.proto, src/main/proto/common/nack_options.proto, src/main/proto/map/v1/map.proto, src/main/proto/reduce/v1/reduce.proto, src/main/proto/serving/v1/store.proto, src/main/proto/sessionreduce/v1/sessionreduce.proto, src/main/proto/sideinput/v1/sideinput.proto, src/main/proto/sink/v1/sink.proto, src/main/proto/source/v1/source.proto, src/main/proto/sourcetransform/v1/sourcetransformer.proto |
| interfaces_expected_of | — |
Excluded from scoring (no data or not applicable): MCP server. Remaining weights renormalized.
Key facts
28GitHub stars
16contributors
13commits, last 12 months
10days since last push
32releases
2bus factor
17open issues
Mavenpackage ecosystems
Data collection warnings
- Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
More detail
Star and fork history 0 ★ / 13 ⇿
0Stars
13Forks
29Releases
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.
Major 0Minor 7Patch 22
Each point covers 3 days.
OpenSSF Scorecard 4.4 / 10
4.4aggregate
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 |
| 5 | CI-Tests | 16 out of 30 merged PRs checked by a CI test -- score normalized to 5 |
| 0 | CII-Best-Practices | no effort to earn an OpenSSF best practices badge detected |
| 10 | Code-Review | all changesets reviewed |
| 10 | Contributors | project has 3 contributing companies or organizations -- score normalized to 10 |
| 10 | Dangerous-Workflow | no dangerous workflow patterns detected |
| 0 | Dependency-Update-Tool | no update tool detected |
| 0 | Fuzzing | project is not fuzzed |
| 10 | License | license file detected |
| 5 | Maintained | 6 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 5 |
| 10 | Packaging | packaging workflow detected |
| 0 | Pinned-Dependencies | dependency not pinned by hash detected -- score normalized to 0 |
| 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 |
| 0 | Token-Permissions | detected GitHub workflow tokens with excessive permissions |
| 0 | Vulnerabilities | 43 existing vulnerabilities detected |
Direct dependencies 16
| Registry | Package | Version constraint | Manifest |
|---|---|---|---|
| Maven | com.google.protobuf:protobuf-java | ${protobuf.version} | pom.xml |
| Maven | io.grpc:grpc-netty | ${grpc.version} | pom.xml |
| Maven | io.grpc:grpc-protobuf | — | pom.xml |
| Maven | io.grpc:grpc-stub | — | pom.xml |
| Maven | io.grpc:grpc-inprocess | — | pom.xml |
| Maven | javax.annotation:javax.annotation-api | 1.3.2 | pom.xml |
| Maven | io.netty:netty-transport-native-epoll | ${netty.version} | pom.xml |
| Maven | io.netty:netty-transport-native-epoll | ${netty.version} | pom.xml |
| Maven | io.netty:netty-transport-native-kqueue | ${netty.version} | pom.xml |
| Maven | io.netty:netty-codec-http2 | ${netty.version} | pom.xml |
| Maven | org.projectlombok:lombok | 1.18.30 | pom.xml |
| Maven | io.grpc:grpc-testing | — | pom.xml |
| Maven | com.typesafe.akka:akka-actor_3 | ${akka.version} | pom.xml |
| Maven | org.slf4j:slf4j-api | ${slf4j.version} | pom.xml |
| Maven | com.fasterxml.jackson.core:jackson-databind | 2.19.0 | pom.xml |
| Maven | io.grpc:grpc-bom | ${grpc.version} | pom.xml |
All dependencies 29
Full resolved dependency set from the GitHub dependency graph: 15 direct and 14 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.
| Registry | Package | Version | Relation |
|---|---|---|---|
| Maven | com.fasterxml.jackson.core:jackson-databind | 2.19.0 | direct |
| Maven | com.google.protobuf:protobuf-java | 4.31.0 | direct |
| Maven | com.typesafe.akka:akka-actor_3 | 2.8.5 | direct |
| Maven | io.grpc:grpc-bom | 1.72.0 | direct |
| Maven | io.grpc:grpc-inprocess | — | direct |
| Maven | io.grpc:grpc-netty | 1.72.0 | direct |
| Maven | io.grpc:grpc-protobuf | — | direct |
| Maven | io.grpc:grpc-stub | — | direct |
| Maven | io.grpc:grpc-testing | — | direct |
| Maven | io.netty:netty-codec-http2 | 4.2.1 | direct |
| Maven | io.netty:netty-transport-native-epoll | 4.2.1 | direct |
| Maven | io.netty:netty-transport-native-kqueue | 4.2.1 | direct |
| Maven | javax.annotation:javax.annotation-api | 1.3.2 | direct |
| Maven | org.projectlombok:lombok | 1.18.30 | direct |
| Maven | org.slf4j:slf4j-api | 2.0.17 | direct |
| Maven | com.google.cloud.tools:jib-maven-plugin | 3.3.0 | indirect |
| Maven | io.numaproj.numaflow:numaflow-java | 0.13.0 | indirect |
| Maven | junit:junit | 4.13.2 | indirect |
| Maven | org.apache.maven.plugins:maven-checkstyle-plugin | 3.0.0 | indirect |
| Maven | org.apache.maven.plugins:maven-gpg-plugin | 1.5 | indirect |
| Maven | org.apache.maven.plugins:maven-javadoc-plugin | 3.0.1 | indirect |
| Maven | org.apache.maven.plugins:maven-source-plugin | 2.2.1 | indirect |
| Maven | org.jacoco:jacoco-maven-plugin | 0.8.7 | indirect |
| Maven | org.junit.jupiter:junit-jupiter | 5.10.2 | indirect |
| Maven | org.mockito:mockito-core | 4.8.1 | indirect |
| Maven | org.slf4j:slf4j-simple | 2.0.17 | indirect |
| Maven | org.slf4j:slf4j-simple | 2.0.7 | indirect |
| Maven | org.sonatype.central:central-publishing-maven-plugin | 0.8.0 | indirect |
| Maven | org.xolstice.maven.plugins:protobuf-maven-plugin | 0.6.1 | indirect |
Dependency advisories 11
Installing maven:io.numaproj.numaflow:numaflow-java@0.13.0 pulls in 53 packages, direct and transitive: 11 carry known advisories, of which 4 are direct dependencies.
| Package | Version | Relation | Severity | Advisories | Fixed in |
|---|---|---|---|---|---|
| io.netty:netty-handler | 4.2.1.Final | indirect | critical | 5 | 4.2.17.Final |
| com.fasterxml.jackson.core:jackson-databind | 2.19.0 | direct | high | 5 | 3.1.4 |
| io.netty:netty-codec-http2 | 4.2.1.Final | direct | high | 8 | 4.2.16.Final |
| com.fasterxml.jackson.core:jackson-core | 2.19.0 | indirect | high | 2 | 3.1.4 |
| io.netty:netty-codec | 4.1.110.Final | indirect | high | 3 | 4.2.16.Final |
| io.netty:netty-codec-compression | 4.2.1.Final | indirect | high | 3 | 4.2.16.Final |
| io.netty:netty-codec-http | 4.2.1.Final | indirect | high | 18 | 4.2.17.Final |
| io.netty:netty-transport-classes-epoll | 4.2.1.Final | indirect | high | 1 | 4.2.13.Final |
| io.netty:netty-transport-native-epoll | 4.2.1.Final | direct | moderate | 1 | 4.2.15.Final |
| io.netty:netty-transport-native-kqueue | 4.2.1.Final | direct | moderate | 1 | 4.2.15.Final |
| io.netty:netty-handler-proxy | 4.1.110.Final | indirect | moderate | 1 | 4.2.13.Final |
An advisory means the version recorded in the dependency graph falls inside an advisory’s affected range. Reachability is not analysed, and the graph includes development and test pins — a finding may concern tooling rather than shipped software.
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 v0.34.0 — full methodology · metrics wiki.
How one result sits in the wider record: aggregate statistics — Maven.