Borehole · Risk register · free tier
casey/just
Free reading: not for reliance
Borehole badge for casey/just
7aed5c9 · 1,989 commits · 322 files
Issued 2026-10-03

Reads strong: 3 of 4 rated dimensions are strong, 1 is adequate and none is significant.

105 checks ran across 6 assessable dimensions. Security & Reliability Posture is adequate. 5 findings, each with evidence. One dimension cannot be assessed without an acquirer.

What the repository says about itself
An earlier reading. This is the survey of 2026-10-03 by borehole 0.7.12, which is what its verification code attests to. A newer reading of the same commit exists: read the newest.
strong adequate significant findings not assessable from a repository
Provenance disclosure does not affect any rating
0% of the code standing today was written in AI-declared commits
0% of lines still in the tree 0 of 77,499 0% of lines ever added these differ when early hand-written code has since been replaced
0% of lines added in the last 12 months (since 2025-09-26) arrived in AI-declared commits: 0/506 commits, confidence moderate. Also a floor.
0/1,987 commits declaring an agent
confidence: moderate
  • 0% of non-merge commits carry any trailer at all
  • low trailer coverage: the convention may not be in consistent use
  • no widespread author/committer date divergence
  • deep scan blamed 318 of 319 counted files
9,581 lines excluded as lockfiles, vendored or generated.
This is a lower bound. It counts what the repository declares. Undeclared AI authorship is invisible here, and a single rebase removes the trailers this rests on. Absence of a declaration is absence of disclosure, not absence of AI authorship.

Architecture & Codebase — including AI provenance

01 · strong · ratings ↑
A note that does not affect this rating
01.6

src/parser.rs is 3,439 lines, 39× this codebase's median file

adequate

The median source file here is 88 lines. 6 files exceed 1,000 lines, the largest being 3,439. 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.

A note that does not affect this rating: measured against its own codebase's median, it is below the 85th percentile of 382 surveyed projects' largest files, where this check begins to count.

Evidence
line-count src/parser.rs:1 — 3,439 lines (39× median)
line-count src/lexer.rs:1 — 2,546 lines (28× median)
line-count src/justfile.rs:1 — 1,480 lines (16× median)
line-count src/config.rs:1 — 1,325 lines (15× median)
line-count src/subcommand.rs:1 — 1,167 lines (13× median)
Respond to this finding

Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.

An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.

Engineering Process & SDLC Maturity

02 · strong · ratings ↑

No finding. 16 checks ran and none fired; the rejection log below says why each did not.

Organization & Key-Person Risk

03 · not assessable · ratings ↑

Not rated: this repository belongs to a person rather than an organisation, so a finding about one contributor would be about someone the address names; the public report does not carry those, and does not rate this dimension without them. What a person adds here.

Product & Engineering Maturity

04 · strong · ratings ↑

No finding. 19 checks ran and none fired; the rejection log below says why each did not.

Security & Reliability Posture

05 · adequate · ratings ↑
05.2

None of the standard security guard rails are configured

adequate

There is no disclosure policy, no automated dependency updates, no named code owners and no pre-commit configuration. None of these is load-bearing on its own. Their collective absence says that security posture here is whatever the current team happens to remember to do, which is not a posture that survives the team changing.

Evidence
guardrail-scan checked 5 kinds of guard rail across 322 tracked files; 0 present
Respond to this finding

Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.

An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.

05.6

1 Dockerfile runs the application as root

adequate

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.

Evidence
no-USER-instruction etc/Dockerfile — runs as root
Respond to this finding

Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.

An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.

Notes that do not affect this rating
05.27

The build runs third-party code it does not pin

adequate

7 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.

A note that does not affect this rating: notes like it are common in well-run projects.

Evidence
.github/workflows/ci.yaml .github/workflows/ci.yaml:30 — action pinned by tag
.github/workflows/ci.yaml .github/workflows/ci.yaml:55 — action pinned by tag
Respond to this finding

Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.

An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.

05.60

Relicensed: Apache-2.0 → CC0-1.0 (2017-11-30)

adequate

The root licence changed 1 time(s). Code taken under earlier terms stays under them; check which terms any fork or customer relied on.

A note that does not affect this rating: a licence change is a fact for the first screen, and only a narrowing of rights within two years of the surveyed commit costs "strong".

Evidence
9d9aaa91b LICENSE.md — Apache-2.0 from 2016-11-13
a88d785af LICENSE — CC0-1.0 from 2017-11-30
Respond to this finding

Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.

An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.

Observability & Operations

06 · not assessable · ratings ↑

Not rated: only 4 of 16 checks could reach a conclusion here; the rest do not apply to this repository or could not read it. What a person adds here.

Fit with the Acquirer

07 · not assessable · ratings ↑

Not rated: structurally not assessable from a repository. What a person adds here.

Check it on the running system

3 checks against the running system follow from the findings above: what a buyer's engineer will try, how to run it first, and what to have ready. A paid survey of this repository includes them. See the tiers.

A paid survey of a public repository is also reviewed: a language model reads each finding against the code and withdraws only findings it judges the code contradicts, each listed with its reason. The review is a language model's reading of the findings against the code, and it can be wrong. It never adds a finding, never raises a band, and never removes a finding from a proven check or an advisory that affects the surveyed version.

What a person adds

The survey reads what the repository can show. The code cannot settle these questions, and on them this report states nothing. Each says where its answer lives: your own engineer, the company, or an assessor you choose can settle it. Questions marked measured open with something this repository shows.

Architecture & Codebase — including AI provenance

01 · full coverage
  1. Is the architecture right for the next three years of the product? Answer lives in: Your architects, with the product roadmap01.39
  2. Were the home-grown components reasonable choices when they were made, and are they now? Answer lives in: The team's reasoning at the time01.40

Engineering Process & SDLC Maturity

02 · high coverage
  1. Is review real or a rubber stamp? Comment depth and time to approve need the pull request history. Answer lives in: The code host's pull request data02.32
  2. Is delivery planned and measured, or heroic? Answer lives in: The issue tracker: backlog, sprint history, estimate accuracy02.38
  3. How are incidents run, reviewed and learned from? Answer lives in: Tickets, chat and postmortems02.37

Organization & Key-Person Risk

03 · partial coverage

Not rated: this repository belongs to a person rather than an organisation, so a finding about one contributor would be about someone the address names; the public report does not carry those, and does not rate this dimension without them.

  1. Which of the people who wrote this are part of the transaction, and for how long after it? Answer lives in: The deal terms03.29
  2. Who mentors whom, and would that survive a departure? Answer lives in: The team; review history only suggests candidates03.28
  3. Can the team grow, and who stands behind the top three contributors? Answer lives in: Recruiting data and the org chart03.30
  4. Is the seniority mix sound, and will pay survive your salary bands? Answer lives in: HR data03.31
  5. Is the pace sustainable? Commit times cannot say: git keeps no reliable local time. Answer lives in: Interviews and on-call history03.14
  6. Does the team want to stay after close? Answer lives in: Interviews03.32
  7. How are decisions made and disagreements resolved? Answer lives in: Time with the team03.33

Product & Engineering Maturity

04 · minimal coverage
  1. measured 501 commits landed in the last year, against 153 the year before (+227%). What drove it: new people, a deadline, or code produced faster than before? Answer lives in: The team04.11
  2. Can this team deliver the stated roadmap on the stated timeline? Answer lives in: The data room and the team's record of estimates04.32
  3. Does leadership know about the debt, and is time budgeted to repay it? Answer lives in: Budget and roadmap decisions04.31
  4. Is the engineering shape consistent with the commercial story? Answer lives in: Revenue, customer and churn data04.33

Security & Reliability Posture

05 · partial coverage
  1. What has actually broken, how often, and how badly? Answer lives in: Ticketing and chat05.41
  2. What did external testing find, and was it fixed? Answer lives in: Reports in the data room05.42
  3. What is the SOC 2, ISO 27001 or GDPR status, and where is the evidence? Answer lives in: Audit reports; policy files in the tree are not evidence05.44

Observability & Operations

06 · partial coverage

Not rated: only 4 of 16 checks could reach a conclusion here; the rest do not apply to this repository or could not read it.

  1. Are the dashboards opened, the alerts acknowledged and the pages answered? Answer lives in: Pager history and dashboard logs06.29
  2. Are the service-level objectives actually met? Answer lives in: Production metrics06.30
  3. Who carries the pager, and how often does it go off? Answer lives in: Pager exports and interviews06.31
  4. What does it cost to run, and how much headroom is there? Answer lives in: Cloud billing and capacity plans06.32

Fit with the Acquirer

07 · none coverage

Not rated: structurally not assessable from a repository.

  1. This is primarily a Rust codebase. Does your engineering organisation already run Rust in production, or would this be the first? 07.1
  2. The bulk of this system sits in src/, completions/, bin/. Which of your existing systems would each of those have to absorb or replace? 07.10
  3. The repository carries deployment configuration (etc/Dockerfile). Does that match your deployment and on-call model, or does it need rehosting first? 07.2
  4. What is your tolerance for the findings above remaining unaddressed for the first two quarters after close, given everything else that will compete for this team's time?
  5. Which of these systems duplicate yours, and which get retired? Answer lives in: Your architecture07.11
  6. What will integration cost, and in what order? Answer lives in: The engagement07.12
  7. Where does the team land in your organisation, and who reports to whom? Answer lives in: Your org design07.13
  8. Are there earn-outs, retention packages or contractor IP to assign? Answer lives in: Deal terms07.14
  9. Do customer contracts limit hosting, regions or vendors? Answer lives in: Customer contracts07.15

A human assessment is Borehole's own paid service, €12,000+ (total price is determined per engagement; travel billed at cost). It is not independent of this report: the same business produced both. It is a separate contract, with its own scope, terms and reliance.

Embed the badge

Tied to this commit and this date, and it fades after 90 days — an honest badge is one that expires. A repository with significant findings gets a neutral "read" badge rather than a red one: the library is where the range is visible, not someone else's README.

Borehole badge for casey/just
[![Borehole](/badge/casey/just.svg "Borehole free reading: not for reliance. See the full report.")](/r/casey/just/7aed5c9)

If you embed it: link it to the report, remove it if the report is delisted, and do not present it as a certification or an endorsement.

Was this reading useful?
Rejection log — 100 signals that ran and did not fire

Appendix: rejection log — 100 signals that ran and did not fire

Published on purpose. A signal that looked and decided not to fire has told you something, and this is the calibration data behind every threshold above.

Looked, and found nothing — 58

SignalWhat it found
04.hotspot_concentration change is spread across the codebase rather than pooling in a few filesfiles 490 · top5 share 0.189
04.debt_markers debt markers are sparsemarkers 1 · per kloc 0.01 · lines read 75,760
04.churn_trend rework is not rising against new worklate delete per insert 0.619 · early delete per insert 0.6
04.fixes_with_tests fixes usually come with a testfixes 49 · share 0.327 · with tests 16
04.compat_layers little code is kept for the old wayshare 0.0 · code files 160 · compat files 0
06.telemetry_presence this repository does not deploy a running service, so instrumentation is not expected of itbasis nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere · files read 303
06.healthcheck_presence not a running service, so a health endpoint is not expectedbasis nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere
06.usage_reporting_default the product's code names no reporting hostsettings on 0 · settings off 0
06.migrate_on_start migrations do not run at container start
03.active_contributors withheld: this check's result would describe one person
03.knowledge_silos withheld: this check's result would describe one person
03.drive_by_contributors withheld: this check's result would describe one person
03.contributor_attrition withheld: this check's result would describe one person
03.critical_path_ownership withheld: this check's result would describe one person
03.second_contributor_attrition withheld: this check's result would describe one person
03.bus_factor_trend withheld: this check's result would describe one person
02.merge_discipline a meaningful share of recent change carries evidence of reviewmerges 0 · window last 24 months · with tracked 0
02.ci_presence CI configuration is present in the working treecount 3
02.test_presence tests are present in a normal proportion to sourcetests 153 · source 276 · test ratio 0.554
02.release_cadence tags are presenttags 181
02.conventional_commits commit subjects generally carry contentsampled 1,987 · low content share 0.006
02.branch_protection_hints process scaffolding is present in the repository
02.ci_runs_tests CI invokes a test runnerconfigs 3 · with tests 1
02.skipped_tests few tests are switched offfocused 0 · skipped 19 · test files 116
02.ci_test_gating no test run in CI is written so that it cannot failconfigs 3
02.revert_share change is rarely undoneshare 0.0 · reverts 0 · recent commits 654
02.dependency_update_cadence dependencies move with the codelockfiles 1 · commits since 8 · days since lockfile changed 4
02.flaky_test_markers tests are not retried until they passtest retries 0 · suite retries 0
02.lint_in_build a linter or formatter runs in the buildwired 1 · ci configs 3 · product files 160
02.commit_size changes arrive in reviewable sizesshare 0.009 · commits 573 · over 2000 lines 5
01.burst_import no commit run met both the rate and the net-addition thresholdgap seconds 180 · min add ratio 3.0 · min net added 2,000
01.initial_dump first commit is not a disproportionate share of the codebaseinsertions 97 · share of insertions 0.0006
01.message_uniformity commit subjects vary in wording and lengthlength stdev 14.7 · repeat share 0.025
01.revision_depth most files were revisited after they were first writtenfiles seen 186 · write once share 0.134
01.duplicated_blocks little shipping code is repeated verbatim across filesshare 0.0008 · product files 160 · distinct blocks 19,111
01.build_reproducibility every base image names a versionfloating 0 · from lines 1
01.unfinished_migration no language migration is stalled halfway
01.weights_in_git no model weights are committedfiles 0
05.committed_secrets no credential-shaped strings outside test and fixture pathsnote the working tree only; the history is 05.5 · patterns 8 · files read 303
05.license_present a licence file is presentfound True
05.secrets_in_history no credential-shaped string was ever added outside test and fixture pathspatterns 8 · truncated False · added lines 156,171
05.secrets_management_pattern no environment file is committed outside tests and examplesenv files 0
05.known_vulnerabilities no locked dependency has a published advisoryadvisories 0 · dependencies 157 · high or critical 0
05.privileged_workloads no workload runs privileged or in the host's namespacessites 0 · behind a setting or built here 0
05.credentials_in_deploy_config deployment configuration references secrets, never holds themfiles 0 · sites 0
05.signing_material no signing keystore or profile is committedfiles 0
05.license_manifest_conflict manifest and licence file agree on CC0-1.0license CC0-1.0
05.license_vendored_unlicensed no vendored third-party code is committedcomponents 0
05.license_grant_unclear the licence is recognisable as CC0-1.0class public-domain · license CC0-1.0
05.committed_native_libraries no widely used compiled library is committed to the productlibraries 0
04.dependency_churn few dependencies were added and dropped within 60 daysdependencies seen 95 · added in two years 19 · removed within 60 days 0
04.ci_platforms_dropped no platform was dropped from CI in the last two years
04.repository_status the README's first screen states no end, move or freezestatements 0
02.development_elsewhere nothing says development happens elsewhereno pr statements 0 · mirror statements 0 · replayed commit share 0.0
05.paid_edition no directory carries a separate paid-edition licencedirectories 0
04.releases_stopped releases keep pace with developmentmedian gap days 8.0 · days since last tag 54 · commits last 90 days 160
04.release_branch the newest release was cut from the branch surveyedelsewhere 15 · on branch 166 · tags in window 181
03.single_maintainer withheld: this check's result would describe one person

Could not conclude, or did not apply — 42

Not a clean result. Each says why it could not answer here.

SignalWhy
04.dependency_sprawlno recognised dependency manifest found
04.test_growthRust keeps unit tests inside the files they test, which a count by file name cannot see
04.eol_runtimeno pinned runtime version to check
04.fix_share_trendfewer than six busy quarters to compare
04.schema_churnno schema migrations to read
04.dependency_redundancyno JavaScript manifest to read
06.structured_loggingnot assessed for Rust, the language the product is written in: this check's patterns read other languages only
06.telemetry_depthnot expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere
06.print_loggingnot expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere
06.correlation_idsnot expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere
06.error_reportingnot expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere
06.alert_rulesnot expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere
06.deployed_image_floatsnot expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere
06.probes_identicalno Kubernetes probes
06.single_replicano Kubernetes deployments
06.environment_branchingnot expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere
06.release_markersnot expected of it: nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere
06.feature_flagsno feature-flag service; flags may live elsewhere
03.joiners_and_leaverswithheld: this check's result would describe one person
02.long_lived_branchestoo few merges to judge (squash and rebase leave none)
01.swallowed_errorsnot assessed for Rust, the language the product is written in: this check's patterns read other languages only
01.notebook_outputsnot a data or machine-learning repository
05.dependency_pinningno manifest whose pinning can be read without a lockfile
05.outbound_timeoutsnot a running service
05.migration_reversibilitytoo few migrations to judge
05.sql_from_stringsnot a running service; a library that builds SQL is doing its job
05.shell_from_stringsnot assessed for Rust, the language the product is written in: this check's patterns read other languages only
05.unsafe_deserializationnot assessed for Rust, the language the product is written in: this check's patterns read other languages only
05.tls_verification_offnot assessed for Rust, the language the product is written in: this check's patterns read other languages only
05.resource_limitsno Kubernetes workload manifests
05.public_env_secretnot a frontend
05.unsafe_htmlnot a frontend
05.source_maps_shippednot a frontend
05.cleartext_trafficnot a mobile app
05.dataset_provenancenot a data or machine-learning repository
05.license_copyleft_inheritedno third-party code is committed to this repository, so the licences it depends on are resolved at build time and are not readable here
04.flags_accumulatingfew or no feature flags in the history
04.api_versions_coexistingnot a running service
04.deprecations_lingeringfew deprecations have outlived two years
05.project_advisoriesrecord incomplete: no advisory found in the sources that answered; OSV crates.io just (an empty record for a package published here) did not; NVD: 372 records name just with nothing tying them to this repository (CVE-2007-3189, CVE-2007-3190, CVE-2007-3191, …)
05.advisory_recordrecord incomplete: no advisory against the project in the last 24 months; OSV crates.io just (an empty record for a package published here) did not answer; NVD: 372 records name just with nothing tying them to this repository (CVE-2007-3189, CVE-2007-3190, CVE-2007-3191, …)
05.project_exploitedno affecting advisory is on CISA's Known Exploited list
BOREHOLE READING NOT A CERTIFICATION P1V9-28NS-0HG7 2026-10-03 · 7AED5C9 BOREHOLE.DEV/VERIFY

Anyone can check this report against the authoritative record — click the stamp, or enter P1V9-28NS-0HG7 at borehole.dev/verify.

The code commits to the 105 checks this run performed, the bands they produced, and the commit they were read at. It does not cover checks written since.

Put the mark in your README

The image is wrapped in a link to the verification page, so a reader can check it rather than take it on trust. If you embed it: link it to the report, remove it if the report is delisted, and do not present it as a certification or an endorsement.

[![Borehole reading, not a certification](https://borehole.dev/badge/casey/just/7aed5c9.svg "Borehole free reading: not for reliance. See the full report.")](https://borehole.dev/verify/P1V928NS0HG7?via=badge)

Borehole reading P1V9-28NS-0HG7, not a certification

This commit has been surveyed 9 times

A survey is a reading by a particular version of the assessor. Older readings are kept rather than replaced, because a verification mark attests to the survey it was issued for — overwriting one would make every code already in circulation read as tampered.

ReadAssessorFindingsBand
2026-10-03 · shown borehole 0.7.12 5 strong
8 other readings (show)
2026-10-04 borehole 0.7.13 5 strong
2026-10-03 borehole 0.7.11 5 strong
2026-10-02 borehole 0.7.10 5 strong
2026-10-01 borehole 0.7.9 5 adequate
2026-09-30 borehole 0.7.8 5 adequate
2026-09-29 borehole 0.7.6 5 adequate
2026-09-28 borehole 0.7.5 5 adequate
2026-09-28 borehole 0.7.4 5 adequate

Where this scan ran

This scan ran on ordinary cloud infrastructure (cloud-run), not in a hardware-isolated confidential VM. Nothing about it is attested by Google.

What an attested survey proves, and what it does not.

What this scan did with the repository — 8 steps

Written by the steps themselves as they ran, not described afterwards. A hand-written account of a data flow drifts the first time somebody changes the flow and not the account.

AtStepDetail
0.0s read repository metadata from the GitHub API authenticated: False
5.0s cloned the repository to a temporary directory depth: full
7.1s read the git history commits: 1989tracked files: 322
35.2s ran the deterministic checks blame pass: Trueread working tree: False
35.2s withheld findings about one contributor: the owner is a person withheld: 1owner kind: person
35.2s recorded where this scan ran attested: Falseenvironment: cloud-run
41.1s kept the facts, never the source, for re-reading under new checks
41.1s deleting the working copy

Total 41.1s ·source content sent off this machine: none · calls to a language model: 0 · the clone was deleted when the survey ended

An automated reading of a repository's code and its history up to one commit, with public advisory records. It may be wrong, it is not legal, financial, investment or security advice, and it does not replace diligence by a qualified person. It is provided for information: nobody may rely on it (Borehole's terms, section 3).

BOREHOLE 0.7.12 DETERMINISTIC LAYER · NO MODEL CALLSREAD ON BOREHOLE'S SERVER · CLONE DELETED TAKEDOWNCONTRIBUTED TO THIS REPOSITORY? YOUR RIGHTS