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Signals needing the full history are reported as inconclusive rather than clean.","dimensions":[{"id":"01","band":"strong","name":"Architecture & Codebase — including AI provenance","coverage":"full","findings":[{"id":"01.3","band":"adequate","layer":"deterministic","title":"Commit messages are templated rather than written","signal":"message_uniformity","weight":"corroborating","context":true,"evidence":[{"ref":"commit-subjects","kind":"metric","detail":"402× 'fix'"},{"ref":"commit-subjects","kind":"metric","detail":"225× 'Fix build'"},{"ref":"commit-subjects","kind":"metric","detail":"209× 'Fix'"}],"observed":{"history_read":"the most recent 50,000 commits (21 Jan 2020 to 30 Oct 2026)"},"dimension":"01","rationale":"37% of commit subjects are exact repeats of another subject, and subject length varies by only 22.2 characters. A log written by someone explaining their reasoning to a future reader does not look like this. The log is therefore weak evidence of intent, whatever the code is like. This was read from the most recent 50,000 commits (21 Jan 2020 to 30 Oct 2026) only; older history was not read.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"01.6","band":"adequate","layer":"deterministic","title":"src/Parsers/New/ClickHouseParser.cpp is 20,193 lines, 480× this codebase's median file","signal":"oversized_modules","weight":"corroborating","context":true,"evidence":[{"ref":"line-count","kind":"path","path":"src/Parsers/New/ClickHouseParser.cpp","detail":"20,193 lines (480× median)","line_end":20193,"line_start":1},{"ref":"line-count","kind":"path","path":"base/poco/Foundation/src/pcre_jit_compile.c","detail":"11,913 lines (283× median)","line_end":11913,"line_start":1},{"ref":"line-count","kind":"path","path":"base/poco/Foundation/src/pcre_compile.c","detail":"9,807 lines (233× median)","line_end":9807,"line_start":1},{"ref":"line-count","kind":"path","path":"base/poco/XML/src/xmlparse.cpp","detail":"9,236 lines (219× median)","line_end":9236,"line_start":1},{"ref":"line-count","kind":"path","path":"src/Storages/MergeTree/MergeTreeData.cpp","detail":"8,014 lines (190× median)","line_end":8014,"line_start":1}],"observed":{"largest":20193,"library":{"n":382,"share":97,"value":480.8,"cutoff":138.63,"material":true,"percentile":85},"threshold":1000,"files_over":161,"median_lines":42},"standing":"Measured against its own codebase's median, it is larger than 97% of 382 surveyed projects' largest files.","dimension":"01","rationale":"The median source file here is 42 lines. 161 files exceed 1,000 lines, the largest being 20,193. Size is not a defect on its own — some problems genuinely live in one place — but these are where merge conflicts, review fatigue and single-owner knowledge concentrate, and they are the first thing that slows an inheriting engineer down.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects."}],"signals_run":11,"conclusive_signals":7,"what_a_person_adds":[{"id":"01.38","kind":"H+","where":"The team","measured":"The tree carries design documentation (docs/en/development/architecture.md and 4 more).","question":"Does it match what the team believes today? Ask them to walk through it against the code."},{"id":"01.35","kind":"H+","where":"The team and the submodule owners","measured":"The repository pulls code in through git submodules (.gitmodules).","question":"A buyer receives pointers, not that code. Can every submodule be fetched without the team's credentials, and who owns each one?"},{"id":"01.39","kind":"H","where":"Your architects, with the product roadmap","question":"Is the architecture right for the next three years of the product?"},{"id":"01.40","kind":"H","where":"The team's reasoning at the time","question":"Were the home-grown components reasonable choices when they were made, and are they now?"}]},{"id":"02","band":"strong","name":"Engineering Process & SDLC Maturity","coverage":"high","findings":[{"id":"02.16","band":"adequate","layer":"deterministic","title":"Tests are retried until they pass","signal":"flaky_test_markers","weight":"corroborating","context":true,"evidence":[{"ref":"docker/test/stateless_pytest/Dockerfile","kind":"path","path":"docker/test/stateless_pytest/Dockerfile","detail":"test retry","line_end":34,"line_start":34}],"observed":{"test_retries":0,"suite_retries":1},"dimension":"02","rationale":"The suite is configured to retry failing tests (docker/test/stateless_pytest/Dockerfile). A retry turns a flaky test green without saying why it failed, so a green build means the tests passed eventually. Ask how many retries a typical run needs, and which tests need them.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects."}],"signals_run":16,"conclusive_signals":14,"what_a_person_adds":[{"id":"02.32","kind":"H","where":"The code host's pull request data","question":"Is review real or a rubber stamp? Comment depth and time to approve need the pull request history."},{"id":"02.38","kind":"H","where":"The issue tracker: backlog, sprint history, estimate accuracy","question":"Is delivery planned and measured, or heroic?"},{"id":"02.37","kind":"H","where":"Tickets, chat and postmortems","question":"How are incidents run, reviewed and learned from?"}]},{"id":"03","band":"adequate","name":"Organization & Key-Person Risk","coverage":"partial","findings":[{"id":"03.26","band":"adequate","layer":"deterministic","title":"The bus factor fell from 4 to 1","signal":"bus_factor_trend","weight":"corroborating","evidence":[{"ref":"bus factor by year","kind":"metric","detail":"1, 3, 4, 3"}],"observed":{"by_year_newest_first":[1,3,4,3]},"dimension":"03","rationale":"Year by year, newest first, the number of people who wrote half the changes was 1, 3, 4, 3. The team narrowed to one person, which is a different risk from one that always was: the code does not say why."}],"signals_run":10,"conclusive_signals":6,"what_a_person_adds":[{"id":"03.29","kind":"H+","where":"The deal terms","measured":"757 people have committed here.","question":"Which of them are you acquiring, and which are you replacing?"},{"id":"03.28","kind":"H","where":"The team; review history only suggests candidates","question":"Who mentors whom, and would that survive a departure?"},{"id":"03.30","kind":"H","where":"Recruiting data and the org chart","question":"Can the team grow, and who stands behind the top three contributors?"},{"id":"03.31","kind":"H","where":"HR data","question":"Is the seniority mix sound, and will pay survive your salary bands?"},{"id":"03.14","kind":"H","where":"Interviews and on-call history","question":"Is the pace sustainable? Commit times cannot say: git keeps no reliable local time."},{"id":"03.32","kind":"H","where":"Interviews","question":"Does the team want to stay after close?"},{"id":"03.33","kind":"H","where":"Time with the team","question":"How are decisions made and disagreements resolved?"}]},{"id":"04","band":"adequate","name":"Product & Engineering Maturity","coverage":"minimal","findings":[{"id":"04.4","band":"adequate","layer":"deterministic","title":"Tests are falling behind the code they cover","signal":"test_growth","weight":"corroborating","evidence":[{"ref":"test-lines-per-code-line","kind":"metric","detail":"first half 842,674/2,990,042 (28.2%); second half 111,232/697,357 (16.0%)"},{"ref":"midpoint","kind":"metric","detail":"history split at 2023-06-11"}],"observed":{"history_read":"the most recent 50,000 commits (21 Jan 2020 to 30 Oct 2026)"},"dimension":"04","rationale":"In the first half of this history, 28% of lines written were test lines. In the second half that fell to 16%. The codebase is growing faster than the safety net around it, which is the shape of a system that gets more expensive to change every quarter — and the cost lands on whoever owns it next. This was read from the most recent 50,000 commits (21 Jan 2020 to 30 Oct 2026) only; older history was not read."}],"signals_run":19,"conclusive_signals":13,"what_a_person_adds":[{"id":"04.11","kind":"H+","where":"The team","measured":"265 commits landed in the last year, against 107 the year before (+148%).","question":"What drove it: new people, a deadline, or code produced faster than before?"},{"id":"04.22","kind":"H+","where":"The data room","measured":"A roadmap file is in the tree (docs/en/whats-new/roadmap.md, last changed October 2025).","question":"A file is not a plan. Does it match the roadmap in the data room, and has the team delivered the last one it wrote?"},{"id":"04.31","kind":"H","where":"Budget and roadmap decisions","question":"Does leadership know about the debt, and is time budgeted to repay it?"},{"id":"04.33","kind":"H","where":"Revenue, customer and churn data","question":"Is the engineering shape consistent with the commercial story?"}]},{"id":"05","band":"adequate","name":"Security & Reliability Posture","coverage":"partial","findings":[{"id":"05.5","band":"adequate","layer":"deterministic","title":"14 credential-shaped strings added in the history sit in tests, examples, documentation or local development settings","signal":"secrets_in_history","weight":"corroborating","context":true,"evidence":[{"kind":"metric","ref":"history","detail":"3 cited: private key block, where fakes are usual"},{"kind":"metric","ref":"history","detail":"AWS access key, where fakes are usual"},{"kind":"metric","ref":"history","detail":"GitHub token, where fakes are usual"}],"observed":{"sample_matches":14,"inert_tokens_set_aside":0},"dimension":"05","rationale":"Strings shaped like credentials appear only where fakes are usual: test fixtures, examples, documentation, placeholders and local stacks. They are almost always fakes. Ask someone to confirm that none of them works anywhere, because a real key in a development file is still a real key.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects.","locations_withheld":5},{"id":"05.6","band":"adequate","layer":"deterministic","title":"6 Dockerfiles run the application as root","signal":"container_runs_as_root","weight":"corroborating","evidence":[{"ref":"no-USER-instruction","kind":"path","path":"docker/bare/Dockerfile","detail":"runs as root"},{"ref":"no-USER-instruction","kind":"path","path":"docker/builder/Dockerfile","detail":"runs as root"},{"ref":"no-USER-instruction","kind":"path","path":"docker/client/Dockerfile","detail":"runs as root"},{"ref":"no-USER-instruction","kind":"path","path":"docker/packager/binary/Dockerfile","detail":"runs as root"}],"observed":{"rootful":6,"dockerfiles":7},"dimension":"05","rationale":"No USER instruction switches away from root, so the process runs with full privileges inside the container. It is a one-line fix and an ordinary expectation, which is why its absence is worth asking about: it usually says more about whether anyone has reviewed the deployment than about this container specifically."},{"id":"05.27","band":"adequate","layer":"deterministic","title":"The build runs third-party code it does not pin","signal":"supply_chain_pinning","weight":"corroborating","context":true,"evidence":[{"ref":".github/workflows/compatibility_test.yml","kind":"path","path":".github/workflows/compatibility_test.yml","detail":"action pinned by tag","line_end":186,"line_start":186},{"ref":".github/workflows/manual_trigger_build.yml","kind":"path","path":".github/workflows/manual_trigger_build.yml","detail":"action pinned by tag","line_end":497,"line_start":497}],"observed":{"action_refs":106,"pipe_to_shell":0,"unpinned_third_party":5},"dimension":"05","rationale":"5 third-party CI actions are referenced by a tag or branch rather than a commit, so they run whatever that tag points to on the day. Tags have been moved to malicious commits in real supply-chain attacks, and a piped script is whatever the server returns that minute. Pinning to a commit is the fix, and it is small.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects."},{"id":"05.9","band":"adequate","layer":"deterministic","title":"20 vendored components with no licence","signal":"license_vendored_unlicensed","weight":"corroborating","context":true,"evidence":[{"ref":"docs/en/interfaces/third-party/client-libraries.md","kind":"path","path":"docs/en/interfaces/third-party/client-libraries.md","detail":"1 tracked files, no licence file"},{"ref":"docs/en/interfaces/third-party/gui.md","kind":"path","path":"docs/en/interfaces/third-party/gui.md","detail":"1 tracked files, no licence file"},{"ref":"docs/en/interfaces/third-party/index.md","kind":"path","path":"docs/en/interfaces/third-party/index.md","detail":"1 tracked files, no licence file"},{"ref":"docs/en/interfaces/third-party/integrations.md","kind":"path","path":"docs/en/interfaces/third-party/integrations.md","detail":"1 tracked files, no licence file"},{"ref":"docs/en/interfaces/third-party/proxy.md","kind":"path","path":"docs/en/interfaces/third-party/proxy.md","detail":"1 tracked files, no licence file"},{"ref":"docs/ja/interfaces/third-party/client-libraries.md","kind":"path","path":"docs/ja/interfaces/third-party/client-libraries.md","detail":"1 tracked files, no licence file"}],"observed":{"unlicensed":["docs/en/interfaces/third-party/client-libraries.md","docs/en/interfaces/third-party/gui.md","docs/en/interfaces/third-party/index.md","docs/en/interfaces/third-party/integrations.md","docs/en/interfaces/third-party/proxy.md","docs/ja/interfaces/third-party/client-libraries.md","docs/ja/interfaces/third-party/gui.md","docs/ja/interfaces/third-party/index.md","docs/ja/interfaces/third-party/integrations.md","docs/ja/interfaces/third-party/proxy.md","docs/ru/interfaces/third-party/client-libraries.md","docs/ru/interfaces/third-party/gui.md","docs/ru/interfaces/third-party/index.md","docs/ru/interfaces/third-party/integrations.md","docs/ru/interfaces/third-party/proxy.md","docs/zh/interfaces/third-party/client-libraries.md","docs/zh/interfaces/third-party/gui.md","docs/zh/interfaces/third-party/index.md","docs/zh/interfaces/third-party/integrations.md","docs/zh/interfaces/third-party/proxy.md"],"total_components":20,"stated_in_headers_or_notices":0},"dimension":"05","rationale":"Third-party code is committed into this repository without any statement of the terms it arrived under. Unknown terms are harder to deal with than inconvenient ones: an awkward licence can be complied with, an absent one cannot. Each of these needs its origin established before the code changes hands.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"05.65","band":"adequate","layer":"deterministic","title":"1 advisory against this project in the last 24 months, 1 high or critical","signal":"advisory_record","weight":"corroborating","context":true,"evidence":[{"ref":"CVE-2026-4746","kind":"advisory","detail":"2026-03-24: CVE-2026-4746 (critical): Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src‎ modules). This vulnerability is associated with program files inflate.C.\n\nThi"}],"observed":{"newest":"2026-03-24","critical":1,"affecting":0,"could_not_tell":0,"last_24_months":1,"sources_failed":[],"known_exploited":0,"high_or_critical":1,"record_incomplete":["NVD: 28 records name proton with nothing tying them to this repository (CVE-2016-2166, CVE-2016-4467, CVE-2018-17187, …)"]},"dimension":"05","rationale":"The newest was published on 2026-03-24. A project that publishes advisories is telling its users about its fixes, and the count and pace say how much security work it carries. None of them affects the surveyed version. The record is incomplete: NVD: 28 records name proton with nothing tying them to this repository (CVE-2016-2166, CVE-2016-4467, CVE-2018-17187, …).","context_why":"A note that does not affect this rating: it describes the project's advisory record, and no advisory in it is known to affect the surveyed commit."}],"signals_run":34,"conclusive_signals":19,"what_a_person_adds":[{"id":"05.43","kind":"H+","where":"The security owner","measured":"No threat model is in the tree of what looks like a running service.","question":"Does one exist elsewhere, and who owns it?"},{"id":"05.41","kind":"H","where":"Ticketing and chat","question":"What has actually broken, how often, and how badly?"},{"id":"05.42","kind":"H","where":"Reports in the data room","question":"What did external testing find, and was it fixed?"},{"id":"05.44","kind":"H","where":"Audit reports; policy files in the tree are not evidence","question":"What is the SOC 2, ISO 27001 or GDPR status, and where is the evidence?"}]},{"id":"06","band":"adequate","name":"Observability & Operations","coverage":"partial","findings":[{"id":"06.2","band":"adequate","layer":"deterministic","title":"No structured logging library is in use","signal":"structured_logging","weight":"corroborating","evidence":[{"ref":"logging-scan","kind":"metric","detail":"C source is not searched: C programs log through printf-style calls unless they take a library, and none of the 10 searched for is referenced"}],"observed":{},"dimension":"06","rationale":"Nothing references a structured logging library. Logs that are written to be read by a person are not searchable by a machine, which means incident response here is proportional to how well someone remembers the codebase rather than to what the tooling can find."},{"id":"06.9","band":"adequate","layer":"deterministic","title":"No error reporter is wired in","signal":"error_reporting","weight":"corroborating","context":true,"evidence":[{"ref":"error reporting","kind":"metric","detail":"no error reporter initialised"}],"observed":{"installed":[],"initialised":0,"config_files":0},"dimension":"06","rationale":"Nothing in the service initialises an error reporter (Sentry, Rollbar, Bugsnag, Honeybadger or an APM agent). An exception in production reaches a person only if someone is reading the logs, which usually means a customer reports it first.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects."},{"id":"06.18","band":"adequate","layer":"deterministic","title":"2 of 2 deployed images carry no version, or `latest`","signal":"deployed_image_floats","weight":"corroborating","context":true,"evidence":[{"ref":"docker/compose/docker-compose.yml","kind":"path","path":"docker/compose/docker-compose.yml","detail":"image without a version","line_end":5,"line_start":5},{"ref":"docker/compose/docker-compose.yml","kind":"path","path":"docker/compose/docker-compose.yml","detail":"image without a version","line_end":34,"line_start":34}],"observed":{"images":2,"floating":2},"dimension":"06","rationale":"2 images in the deployment configuration are named without a version or as `latest`. A redeploy can change the software without a commit, a rollback has nothing to roll back to, and nobody can say from the repository what is running.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."}],"signals_run":16,"conclusive_signals":8,"what_a_person_adds":[{"id":"06.19","kind":"H+","where":"The operations team","measured":"Nothing in the tree backs up or restores data.","question":"How is data backed up, and has a restore ever been rehearsed?"},{"id":"06.10","kind":"H+","where":"The alerting tool and the on-call rota","measured":"No alert rule is defined in the repository.","question":"Where are alerts defined, who receives them, and when did one last fire?"},{"id":"06.29","kind":"H","where":"Pager history and dashboard logs","question":"Are the dashboards opened, the alerts acknowledged and the pages answered?"},{"id":"06.30","kind":"H","where":"Production metrics","question":"Are the service-level objectives actually met?"},{"id":"06.31","kind":"H","where":"Pager exports and interviews","question":"Who carries the pager, and how often does it go off?"},{"id":"06.32","kind":"H","where":"Cloud billing and capacity plans","question":"What does it cost to run, and how much headroom is there?"}]},{"id":"07","band":"not assessable","name":"Fit with the Acquirer","coverage":"none","findings":[],"signals_run":0,"conclusive_signals":0,"what_a_person_adds":[{"id":"07.1","kind":"H+","question":"This is primarily a C codebase, with C++ alongside (46% of source files). Does your engineering organisation already run C in production, or would this be the first?"},{"id":"07.10","kind":"H+","question":"The bulk of this system sits in src/, contrib/, programs/. Which of your existing systems would each of those have to absorb or replace?"},{"id":"07.9","kind":"H+","question":"54% of lines added in the last 12 months (1% of lines added in the most recent 50,000 commits (21 Jan 2020 to 30 Oct 2026)) came through AI-declared commits. Does your organisation have a policy on inheriting and maintaining that code, and does your engineering team's tooling match how it was produced?"},{"id":"07.2","kind":"H+","question":"The repository carries deployment configuration (docker/bare/Dockerfile and 9 more). 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