Borehole · Risk register · free tier
expressjs/express
Free reading: not for reliance
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9a34acf · 6,170 commits · 214 files
Issued 2026-09-24

Nothing significant. Questions worth asking about Security & Reliability Posture, Architecture & Codebase — including AI provenance.

43 checks ran across 6 assessable dimensions. None found a significant problem; 4 raised something worth a question. 5 findings, each with evidence. One dimension cannot be assessed without an acquirer.

An earlier reading. This is the survey of 2026-09-24 by borehole 0.4.0.dev1, which is what its verification code attests to. A newer reading of the same commit exists: read the newest.
Published under today's rules. The verification code attests to this reading as it was stored. This page differs from it as follows.
  • Words about people are today's: bands rather than exact shares, dates or day counts, and what the history measured rather than why.
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 3 of 26,796 0% of lines ever added these differ when early hand-written code has since been replaced
2/5,685 commits declaring an agent
confidence: moderate
  • 2% 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 212 of 214 counted files
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 · adequate · ratings ↑
01.6

lib/response.js is 1,050 lines, 14× this codebase's median file

adequate

The median source file here is 75 lines. 1 file exceed 1,000 lines, the largest being 1,050. 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.

Evidence
line-count lib/response.js:1 — 1,050 lines (14× 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 · adequate · ratings ↑
02.6

Almost no process scaffolding exists in the repository

adequate

Of five ordinary markers — CI workflows, CODEOWNERS, a pull-request template, pre-commit hooks, contribution guidance — 1 is present: CI workflows. Branch protection itself is a GitHub setting rather than a file, so this is a reading of proxies and not of the rules themselves. What it does establish is that the process is not written down anywhere a new engineer would find it.

Evidence
process-scaffolding 1 of 5 markers present across 214 tracked files
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.

Organization & Key-Person Risk

03 · adequate · ratings ↑
03.5

The contributor who wrote more than half of this has not committed here for more than three years

adequate

One person authored more than half of 5,685 commits and has not committed here for more than three years, while the repository has kept moving. The concentration figure alone would not show this. Whoever is changing this code now is not the person who wrote most of it, which is the situation an acquirer is usually told they are avoiding. The history shows only that no commits of theirs landed here, not why.

Evidence
last-commit-by-top-author last commit more than three years ago, measured to the survey
git shortlog -sn top author more than half of 5,685 commits
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.

Product & Engineering Maturity

04 · strong · ratings ↑

No finding. 6 checks ran and none fired; the rejection log below says why each did not.

Security & Reliability Posture

05 · adequate · ratings ↑
05.3

37 dependencies float, and no lockfile is committed

adequate

Dependency versions are declared as ranges and no lockfile is committed, so a build today does not necessarily produce what a build last month produced. That matters twice over in a transaction: the thing being bought cannot be reproduced exactly, and a compromised upstream release arrives without anyone choosing to take it.

Evidence
unpinned package.json — accepts ^2.0.0
unpinned package.json — body-parser ^2.3.0
unpinned package.json — content-disposition ^2.0.1
unpinned package.json — content-type ^2.0.0
unpinned package.json — cookie ^0.7.1
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.

05.10

Licence text does not match a standard licence

adequate

LICENSE exists but its text does not match any standard licence. A bespoke or hand-edited licence is not wrong, but it cannot be cleared by recognising its name: counsel has to read it, and until they do neither side knows precisely what rights transfer with the code.

Evidence
LICENSE LICENSE:1 — 24 lines, unrecognised
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 · strong · ratings ↑

No finding. 3 checks ran and none fired; the rejection log below says why each did not.

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

2 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.

Engineering Process & SDLC Maturity

02 · high coverage
  1. Incident response practice is not visible in a repository.

Organization & Key-Person Risk

03 · partial coverage
  1. Hiring pipeline, bench depth and retention are not visible in a repository.
  2. Whether the dominant contributor is part of the transaction.
  3. Seniority, levelling and who actually mentors whom.
  4. Whether the team wants to stay after the deal closes.

Product & Engineering Maturity

04 · minimal coverage
  1. Roadmap credibility requires the data room.
  2. Whether technical debt is acknowledged and funded.

Security & Reliability Posture

05 · partial coverage
  1. Incident history and failure-mode analysis are not in the repository.

Observability & Operations

06 · partial coverage
  1. Whether anyone watches the telemetry that exists.

Fit with the Acquirer

07 · none coverage

Not rated: structurally not assessable from a repository.

  1. This is primarily a JavaScript codebase. Does your engineering organisation already run JavaScript in production, or would this be the first?
  2. One contributor authored 62% of this history. Is that person part of the transaction, and for how long after it?
  3. The bulk of this system sits in test/, lib/, docs/. Which of your existing systems would each of those have to absorb or replace?
  4. Nothing in the repository says how this is deployed. Is it shipped as a library, a binary or a service, and if it runs somewhere, who owns that environment?
  5. 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?

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 expressjs/express
[![Borehole](/badge/expressjs/express.svg "Borehole free reading: not for reliance. See the full report.")](/r/expressjs/express/9a34acf)

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 — 38 signals that ran and did not fire

Appendix: rejection log — 38 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 — 32

SignalWhat it found
04.hotspot_concentration change is spread across the codebase rather than pooling in a few filesfiles 1,039 · top5 share 0.206
04.debt_markers debt markers are sparsemarkers 0 · per kloc 0.0 · lines read 26,341
04.dependency_sprawl direct dependency counts are unremarkable
04.test_growth test effort kept pace with code writtenlate test per code 2.228 · early test per code 0.444
04.churn_trend rework is not rising against new worklate delete per insert 0.447 · early delete per insert 0.828
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 164
06.structured_logging not a running service; structured logging is not expected of a librarybasis nothing in this repository deploys a long-running server; if it runs as one, its deployment lives elsewhere
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
03.contributor_concentration no single contributor dominates the last 24 monthsyears 17.2 · window last 24 months · authors 393
03.active_contributors more than one contributor active in the trailing yearall time 394 · active 12mo 36
03.knowledge_silos every substantial directory has been touched by more than one personauthors 394 · directories 7
03.drive_by_contributors an open contributor base, where one-commit contributors are normalauthors 394 · one off share 0.759
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 5
02.test_presence tests are present in a normal proportion to sourcetests 91 · source 141 · test ratio 0.645
02.release_cadence tags are presenttags 305
02.conventional_commits commit subjects generally carry contentsampled 5,685 · low content share 0.103
02.ci_runs_tests CI invokes a test runnerconfigs 5 · with tests 2
02.skipped_tests few tests are switched offfocused 0 · skipped 0 · test files 111
02.ci_test_gating no test run in CI is written so that it cannot failconfigs 5
02.revert_share change is rarely undoneshare 0.007 · reverts 1 · recent commits 139
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 92 · share of insertions 0.0007
01.message_uniformity commit subjects vary in wording and lengthlength stdev 17.55 · repeat share 0.161
01.revision_depth most files were revisited after they were first writtenfiles seen 1,042 · write once share 0.292
05.committed_secrets no credential-shaped strings outside test and fixture pathsnote the working tree only; the history is 05.5 · patterns 7 · files read 164
05.security_guardrails at least one standard guard rail is configured
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 7 · truncated False · added lines 76,547
05.secrets_management_pattern no environment file is committed outside tests and examplesenv files 0
05.supply_chain_pinning third-party build steps are pinned, or fewaction refs 24 · pipe to shell 0 · unpinned third party 0
05.license_vendored_unlicensed no vendored third-party code is committedcomponents 0

Could not conclude, or did not apply — 6

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

SignalWhy
04.eol_runtimeno pinned runtime version to check
02.dependency_update_cadenceno lockfile to date
01.duplicated_blockstoo few source files to look for duplication across them
05.container_runs_as_rootno Dockerfile to read
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
05.license_manifest_conflictno licence file could be identified to compare the manifest against
BOREHOLE READING NOT A CERTIFICATION JN9Q-JGBY-V3DH 2026-09-24 · 9A34ACF BOREHOLE.DEV/VERIFY

Anyone can check this report against the authoritative record — click the stamp, or enter JN9Q-JGBY-V3DH at borehole.dev/verify.

The code commits to the 43 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/expressjs/express/9a34acf.svg "Borehole free reading: not for reliance. See the full report.")](https://borehole.dev/verify/JN9QJGBYV3DH?via=badge)

Borehole reading JN9Q-JGBY-V3DH, not a certification

Quoted evidence

5 pieces of evidence on this report quote the repository directly. Four checks quote text: up to five TODO-style comments, up to four commit subjects, up to five unpinned dependency lines and one status line from the README's first screen, such as “no longer maintained”. In each case the text is the evidence, which is why it is kept by default.

This rewrites every stored reading of this repository, and every later reading, including a re-read, is stored without the quoted text. The facts we keep to re-read it still hold the lines, as the privacy notice says. The pointers stay.

This commit has been surveyed 21 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
2026-09-24 · shown borehole 0.4.0.dev1 5 adequate
20 other readings (show)
2026-10-04 borehole 0.7.13 6 strong
2026-10-03 borehole 0.7.12 6 strong
2026-10-03 borehole 0.7.11 6 strong
2026-10-02 borehole 0.7.10 6 strong
2026-10-01 borehole 0.7.9 6 strong
2026-09-30 borehole 0.7.8 6 adequate
2026-09-29 borehole 0.7.6 7 adequate
2026-09-28 borehole 0.7.5 7 adequate
2026-09-28 borehole 0.7.4 7 adequate
2026-09-27 borehole 0.7.3 7 adequate
2026-09-27 borehole 0.7.2 7 adequate
2026-09-27 borehole 0.7.1 7 adequate
2026-09-26 borehole 0.7.0 7 adequate
2026-09-26 borehole 0.6.3 6 adequate
2026-09-26 borehole 0.6.2 6 adequate
2026-09-25 borehole 0.6.1 6 adequate
2026-09-25 borehole 0.6.0 7 adequate
2026-09-24 borehole 0.4.0 7 adequate
2026-09-24 borehole 0.4.0.dev2 5 adequate
2026-09-23 borehole 0.1.0.dev0 11 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 — 6 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
0.5s read repository metadata from the GitHub API size mb: 9.7authenticated: False
2.9s cloned the repository to a temporary directory depth: full
4.6s read the git history commits: 6170tracked files: 214
12.0s ran the deterministic checks blame pass: Trueread working tree: False
12.0s recorded where this scan ran attested: Falseenvironment: cloud-run
12.0s deleting the working copy

Total 12.0s ·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 0.4.0.DEV1 DETERMINISTIC LAYER · NO MODEL CALLSREAD ON BOREHOLE'S SERVER · CLONE DELETED TAKEDOWNCONTRIBUTED TO THIS REPOSITORY? YOUR RIGHTS