Public recordModerate
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-10-18 16:02 UTC
vantaboard / bigquery-emulator
An open source emulator for BigQuery.
vantaboard/bigquery-emulator holds a health index of 56 out of 100, placing it in the Moderate band. It scores highest on AI Readiness (89/100) and lowest on Security (1/100). It was last updated 71 days ago. A single contributor accounts for most of its recent work.
56
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.
56
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 54 is calibrated to 56 on the published index scale (record calibration 2026-08-02).
Ownership
brightenPersonal account
24 followers29 public repossince Jul 2021
This repository is owned by a personal account. A single-owner project carries more continuity risk than an organization-backed one.
Package ecosystems
| Registry | Package | Version | Downloads / mo | Versions | Last publish |
|---|---|---|---|---|---|
| Go | github.com/vantaboard/bigquery-emulator | v0.10.0 | - | 14 | 71 days ago |
Metrics by category
Vitality
Is the project alive — is code being written and are releases shipping?
70
Development activity
50Moderate
How it's scored
| 18/36 | Push recency — last push 71 days ago |
| 9/36 | Commit cadence — 13/52 weeks with commits |
| 18/18 | Commit volume — 1,259 commits in the last year |
| 0/10 | OpenSSF Scorecard: Maintained — no data |
Inputs used
| commits_last_year | 1,259 |
| human_commit_share | 0.45 |
| days_since_last_push | 71 |
| active_weeks_last_year | 13 |
Release discipline
100Exceptional
How it's scored
| 27/27 | Ships releases — 18 releases published |
| 36/36 | Release recency — latest release 71 days ago |
| 27/27 | Release cadence — a release every ~5.5 days |
| 0/10 | OpenSSF Scorecard: Signed-Releases — no data |
Inputs used
| releases_count | 18 |
| latest_release_tag | v0.10.0 |
| releases_from_tags | no |
| days_since_latest_release | 71 |
| mean_days_between_releases | 5.5 |
Community & Adoption
Does the project have users, downloads, attention, and a welcoming setup for contributors?
29
Popularity & adoption
11Critical
How it's scored
| 11.3/60 | Stars — 6 stars |
| 0/25 | Forks — 0 forks |
| 0/15 | Watchers — 0 watchers |
Inputs used
| forks | 0 |
| stars | 6 |
| watchers | 0 |
| 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 (MIT) |
| 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 | 7 |
| 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?
62
Maintainer resilience (bus factor)
13Critical
How it's scored
| 9/54 | Bus factor — 1 contributor(s) cover half of all commits |
| 0.1/22.5 | Commit distribution — top contributor authored 99% of commits |
| 2.7/13.5 | Contributor breadth — 2 contributors |
| 0/10 | OpenSSF Scorecard: Contributors — no data |
Inputs used
| bus_factor | 1 |
| contributors_sampled | 2 |
| top_contributor_share | 0.994 |
Issue & PR responsiveness
100Exceptional
How it's scored
| 42/42 | Issue resolution — 100% of issues closed |
| 0/30 | PR acceptance — no decided pull requests or no data |
| 0/13 | Newcomer PR acceptance — no first-time contributor's PR decided in 30d |
| 0/15 | OpenSSF Scorecard: Code-Review — no data |
Inputs used
| merged_prs | 0 |
| open_issues | 0 |
| closed_issues | 1 |
| prs_merged_7d | 0 |
| prs_decided_7d | 0 |
| prs_merged_30d | 0 |
| prs_decided_30d | 0 |
| issue_closed_ratio | 1 |
| closed_unmerged_prs | 0 |
| 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): PR acceptance, Newcomer PR acceptance. Remaining weights renormalized.
Ownership & stewardship
52Moderate
How it's scored
| 10/30 | Ownership backing — personal (user) account |
| 0/20 | Verified domain — not applicable to user accounts |
| 10.1/25 | Owner reach — 24 followers of vantaboard |
| 21.3/25 | Track record — 29 public repos, account ~5 yr old |
Inputs used
| followers | 24 |
| owner_type | User |
| is_verified | — |
| owner_login | vantaboard |
| public_repos | 29 |
| account_age_days | 1,933 |
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.
Package maintenance
100Exceptional
How it's scored
| 25/25 | Published & resolvable — 1 package(s) on go |
| 35/35 | Publish recency — latest publish 71 days ago |
| 20/20 | Version history — 14 published versions |
| 20/20 | Not deprecated — active, not deprecated or yanked |
Inputs used
| packages | github.com/vantaboard/bigquery-emulator |
| ecosystems | go |
| any_deprecated | no |
| min_days_since_publish | 71 |
Engineering Quality
Are baseline engineering and documentation practices in place?
88
Engineering practices
80Excellent
How it's scored
| 24/24 | CI workflows — 18 workflow(s) |
| 24/24 | Tests present |
| 16/16 | Linter config — .eslintrc.yml, .golangci.yml, eslint.config.js |
| 0/9.6 | Pre-commit hooks |
| 0/6.4 | .editorconfig |
| 0/20 | OpenSSF Scorecard: CI-Tests — no data |
Inputs used
| has_ci | yes |
| has_tests | yes |
| has_editorconfig | no |
| has_linter_config | yes |
| has_precommit_config | no |
Documentation
100Exceptional
How it's scored
| 30/30 | README |
| 25/25 | Documentation directory |
| 15/15 | Documentation / homepage site — https://vantaboard.github.io/bigquery-emulator/ |
| 10/10 | Repository description |
| 10/10 | Topics — 12 topics |
| 10/10 | Wiki |
Inputs used
| topics | bigquery, cpp, data-engineering, duckdb, emulator, gcp, golang, googlesql, local-development, olap, sql, testing |
| has_wiki | yes |
| homepage | https://vantaboard.github.io/bigquery-emulator/ |
| docs_site | https://vantaboard.github.io/bigquery-emulator/ |
| has_readme | yes |
| has_docs_dir | yes |
| has_description | yes |
Security
Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?
1
Security posture
1Critical
How it's scored
| 0/30 | Security policy (SECURITY.md) |
| 0/25 | Dependabot config |
| 0/25 | Dependency lockfiles — published library — lockfiles are an application concern, not expected |
| 0/20 | CodeQL workflow |
Inputs used
| source | file_signals |
| lockfiles | go.sum, package-lock.json, pnpm-lock.yaml, uv.lock |
| manifests | console/package.json, docs/requirements.txt, go.mod, package.json |
| has_codeql_workflow | no |
| has_security_policy | no |
| has_dependabot_config | no |
Excluded from scoring (no data or not applicable): Dependency lockfiles. 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.
89
Agent context & guidance
85Excellent
How it's scored
| 45/45 | Agent instructions — .cursor/rules/auto-commit.mdc, .cursor/rules/bazel-process-hygiene.mdc, .cursor/rules/conformance-bq-validation.mdc, .cursor/rules/conformance-core-usage.mdc, .cursor/rules/no-fatal-on-client-state.mdc, .cursor/rules/pin-reported-bugs.mdc, .cursor/rules/pre-commit-lint.mdc, .cursor/rules/process-hygiene.mdc, .cursorrules, CLAUDE.md |
| 0/15 | Machine-readable docs (llms.txt) |
| 40/40 | Legible commit history — 45 of 45 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 | .cursor/rules/auto-commit.mdc, .cursor/rules/bazel-process-hygiene.mdc, .cursor/rules/conformance-bq-validation.mdc, .cursor/rules/conformance-core-usage.mdc, .cursor/rules/no-fatal-on-client-state.mdc, .cursor/rules/pin-reported-bugs.mdc, .cursor/rules/pre-commit-lint.mdc, .cursor/rules/process-hygiene.mdc, .cursorrules, CLAUDE.md |
| agent_instruction_max_bytes | 9,477 |
Verify loop (build / test / typecheck)
91Excellent
How it's scored
| 18/18 | One-command bootstrap — Makefile, Taskfile.yml, console/Taskfile.yml, mise.toml, third_party/python-bigquery-dataframes-tests/noxfile.py, third_party/python-bigquery-dataframes-tests/samples/polars/noxfile.py, third_party/python-bigquery-dataframes-tests/samples/snippets/noxfile.py, third_party/python-bigquery-tests/noxfile.py, third_party/python-bigquery-tests/samples/desktopapp/noxfile.py, third_party/python-bigquery-tests/samples/geography/noxfile.py, third_party/python-bigquery-tests/samples/magics/noxfile.py, third_party/python-bigquery-tests/samples/notebooks/noxfile.py, third_party/python-bigquery-tests/samples/snippets/noxfile.py |
| 22/22 | Automated tests |
| 11/11 | Lint / format config — .eslintrc.yml, .golangci.yml, eslint.config.js |
| 11/11 | Static type checking — console/tsconfig.json, extensions/vscode/extension/tsconfig.json, extensions/vscode/server/tsconfig.json, extensions/vscode/shared/tsconfig.json, pyrightconfig.json, third_party/python-bigquery-dataframes-tests/bigframes/py.typed, third_party/python-bigquery-dataframes-tests/third_party/bigframes_vendored/py.typed, third_party/python-bigquery-dataframes-tests/third_party/bigframes_vendored/sqlglot/py.typed, third_party/python-bigquery-tests/google/cloud/bigquery/py.typed, third_party/python-bigquery-tests/samples/mypy.ini, third_party/python-bigquery-tests/samples/snippets/mypy.ini |
| 10/10 | Reproducible environment — Dockerfile, lockfile |
| 10/10 | Demonstrated agent practice — 43 of the last 100 commits agent-authored or agent-credited |
| 0/8 | Automated maintenance — no automated dependency updates observed |
| 0/10 | OpenSSF Scorecard: Pinned-Dependencies — no data |
Inputs used
| has_nix | no |
| has_tests | yes |
| lockfiles | go.sum, package-lock.json, pnpm-lock.yaml, uv.lock |
| has_dockerfile | yes |
| typed_language | yes |
| bootstrap_files | Makefile, Taskfile.yml, console/Taskfile.yml, mise.toml, third_party/python-bigquery-dataframes-tests/noxfile.py, third_party/python-bigquery-dataframes-tests/samples/polars/noxfile.py, third_party/python-bigquery-dataframes-tests/samples/snippets/noxfile.py, third_party/python-bigquery-tests/noxfile.py, third_party/python-bigquery-tests/samples/desktopapp/noxfile.py, third_party/python-bigquery-tests/samples/geography/noxfile.py, third_party/python-bigquery-tests/samples/magics/noxfile.py, third_party/python-bigquery-tests/samples/notebooks/noxfile.py, third_party/python-bigquery-tests/samples/snippets/noxfile.py |
| has_devcontainer | no |
| has_linter_config | yes |
| typecheck_configs | console/tsconfig.json, extensions/vscode/extension/tsconfig.json, extensions/vscode/server/tsconfig.json, extensions/vscode/shared/tsconfig.json, pyrightconfig.json, third_party/python-bigquery-dataframes-tests/bigframes/py.typed, third_party/python-bigquery-dataframes-tests/third_party/bigframes_vendored/py.typed, third_party/python-bigquery-dataframes-tests/third_party/bigframes_vendored/sqlglot/py.typed, third_party/python-bigquery-tests/google/cloud/bigquery/py.typed, third_party/python-bigquery-tests/samples/mypy.ini, third_party/python-bigquery-tests/samples/snippets/mypy.ini |
| agent_commit_share | 0.43 |
| toolchain_manifests | go.mod, third_party/golang-bigquery-tests/go.mod, third_party/java-bigquery-tests/java-bigquery/samples/install-without-bom/pom.xml, third_party/java-bigquery-tests/java-bigquery/samples/pom.xml, third_party/java-bigquery-tests/java-bigquery/samples/snapshot/pom.xml, third_party/java-bigquery-tests/java-bigquery/samples/snippets/pom.xml, third_party/java-bigquery-tests/java-bigquerystorage/samples/install-without-bom/pom.xml, third_party/java-bigquery-tests/java-bigquerystorage/samples/pom.xml, third_party/java-bigquery-tests/java-bigquerystorage/samples/snapshot/pom.xml, third_party/java-bigquery-tests/java-bigquerystorage/samples/snippets/pom.xml, third_party/java-bigquery-tests/java-docs-samples/bigquery/bigqueryconnection/snippets/pom.xml, third_party/java-bigquery-tests/java-docs-samples/bigquery/bigquerydatatransfer/snippets/pom.xml |
| dependency_bot_commit_share | 0 |
Code legibility for models
100Exceptional
How it's scored
| 45/45 | Type-checkable code — C++ (statically typed) |
| 54.9/55 | Manageable file sizes — 2/1,071 source files over 60KB |
Inputs used
| primary_language | C++ |
| largest_source_bytes | 271,655 |
| source_files_sampled | 1,071 |
| oversized_source_files | 2 |
Machine-readable interfaces
80Excellent
How it's scored
| 40/40 | API schema (OpenAPI/GraphQL/proto) — proto/emulator.proto, proto/storage_read.proto, proto/storage_write.proto, third_party/golang-bigquery-tests/snippets/managedwriter/exampleproto/sample_data.proto, third_party/java-bigquery-tests/java-bigquerystorage/samples/snippets/src/main/proto/nested.proto, third_party/java-bigquery-tests/java-bigquerystorage/samples/snippets/src/main/proto/separate.proto |
| 0/20 | MCP server |
| 40/40 | Runnable examples — example, sample, samples |
Inputs used
| example_dirs | example, sample, samples |
| has_mcp_signal | no |
| api_schema_files | proto/emulator.proto, proto/storage_read.proto, proto/storage_write.proto, third_party/golang-bigquery-tests/snippets/managedwriter/exampleproto/sample_data.proto, third_party/java-bigquery-tests/java-bigquerystorage/samples/snippets/src/main/proto/nested.proto, third_party/java-bigquery-tests/java-bigquerystorage/samples/snippets/src/main/proto/separate.proto |
| interfaces_expected_of | network-service |
Key facts
6GitHub stars
2contributors
1,259commits, last 12 months
71days since last push
18releases
1bus factor
0open issues
Go, npm, PyPIpackage ecosystems
Data collection warnings
- Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
- GitHub dependency-graph SBOM unavailable (404); the dependency graph may be disabled for this repository
- OpenSSF Scorecard did not return a usable result (exit code 0; Skipping github.com/vantaboard/bigquery-emulator: run: internal error: ListCommits:error during graphqlHandler.setup: internal error: githubv4.Query: Something went wrong while executing your query on 2026-10-18T16:02:18Z. Please include `BD18:A46D1:1A14E896:278C1E14:6AD4ED88` when reporting this issue.); skipping Scorecard checks
More detail
Direct dependencies 23
| Registry | Package | Version constraint | Manifest |
|---|---|---|---|
| npm | @bigquery-emulator/vscode-server | workspace:* | console/package.json |
| npm | @bigquery-emulator/vscode-shared | workspace:* | console/package.json |
| npm | @monaco-editor/react | ^4.7.0 | console/package.json |
| npm | @tanstack/react-query | ^5.62.0 | console/package.json |
| npm | clsx | ^2.1.1 | console/package.json |
| npm | lucide-react | ^0.468.0 | console/package.json |
| npm | monaco-editor | ^0.55.1 | console/package.json |
| npm | react | ^19.0.0 | console/package.json |
| npm | react-dom | ^19.0.0 | console/package.json |
| npm | react-router | ^7.6.0 | console/package.json |
| npm | sql-formatter | ^15.4.11 | console/package.json |
| npm | tailwind-merge | ^2.6.0 | console/package.json |
| npm | vscode-languageserver-protocol | ^3.18.2 | console/package.json |
| Go | cloud.google.com/go/bigquery | v1.77.0 | go.mod |
| Go | cloud.google.com/go/bigquery/v2 | v2.0.0-20260605072146-b54b4f022fbd | go.mod |
| Go | github.com/apache/arrow/go/v18 | v18.0.0-20241007013041-ab95a4d25142 | go.mod |
| Go | github.com/google/go-cmp | v0.7.0 | go.mod |
| Go | github.com/linkedin/goavro/v2 | v2.15.0 | go.mod |
| Go | github.com/parquet-go/parquet-go | v0.30.1 | go.mod |
| Go | github.com/scritchley/orc | v0.0.0-20210513144143-06dddf1ad665 | go.mod |
| Go | google.golang.org/grpc | v1.81.1 | go.mod |
| Go | google.golang.org/protobuf | v1.36.11 | go.mod |
| Go | gopkg.in/yaml.v3 | v3.0.1 | go.mod |
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
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 — Go.