redact-secret · Report

Marketing API key

32-hex API key followed by a literal -us and a one- or two-digit data-center number; recognized only beside a same-line mailchimp keyword.

Mailchimp
Detectors: mailchimp-api-key
Run 2026-10-07
Mode published · redact-secret 0.1.0-beta.14

All providers

Dossier verdictReady
Dossier evidence levelT2 · Tool-corroborated
Dossier researched2026-09-25

redact-secret#313 (product PR #678) landed on the product main after 0.1.0-beta.6; the pinned published package predates it. Mandrill (transactional) keys are a separate product and not this family.

New pipelineAuthority

Built from the new pipeline

The new pipeline is the authority for credential qualification. These numbers are read from the qualification view derived from the official credential-eval run of the public-evidence-snapshot population. The regression and policy populations keep their own counts on the qualification pages and are not added in here.

Authority: new
Population: public-evidence-snapshot
Engine: credential-eval 0.1.0-alpha.16
Evidence: snapshot-2026.10.06.4
Run: sha256:4bec6e539482…
Recorded: 2026-10-07
Authorised for: @redact-secret/core@0.1.0-beta.14

Maintainer-reviewed (independent review pending)

598 fixtures of the 7,041 in evidence release snapshot-2026.10.06.4 carry this label. They are counted in the numbers on this page.

Passed the project’s own verification (source evidence, automated checks, recorded counter-arguments); not yet independently reviewed.

OpenRedaction default (all patterns): not measured in this run (optional)

The default (all-pattern) profile is slow and noisy for credential evaluation: personal data and resource identifiers dominate its findings, and its last official measurement took 7 minutes of scanner time on a population the credential profile scans in seconds (its methods run takes 40+ minutes), so it is a manual measurement and never blocks other scanners or core verification (#763). Its earlier results stay as history with their run identity; the credential profile is a separate scanner, never spliced with it.

Last measurement: policy-corpus@linux-x64 (configuration sha256:2451ce7bf380), public-evidence-snapshot+methods@linux-x64 (configuration sha256:d47d081ce5fb), public-evidence-snapshot@linux-x64 (configuration sha256:2451ce7bf380), regression-corpus@linux-x64 (configuration sha256:2451ce7bf380) · engine 0.1.0-alpha.5 · recorded 2026-10-05 · retained record, no longer listed by the run registry. It stays labelled with that run identity and is never combined with another profile or another run.

Open the qualification page for this pointer

OpenRedaction credential profile (33 types): not measured in an official run (local exploratory diagnostics only: see ADR)

The credential profile is the comparison profile chosen in docs/decisions/2026-10-06-choose-the-openredaction-credential-bearing-profile-as-the-comparison-scanner.md. It is optional in the official run class because no pinned engine configuration measures it yet: making it required would refuse every official view until the owner approves the one profile-only run. Its own history starts with that run; nothing of the default's is reused for it.

No earlier measurement of it is recorded. Nothing is shown in its place.

Official measurement: pending: requires owner approval (one profile-only run; see the decision).

Open the qualification page for this pointer

Every population and its qualification

Research record

From credential-evidence snapshot-2026.10.06.4 · records at 77ce761 · schema 1.8.0. It describes the research on the format, not what any scanner or the product does, and not a support status.

Review stateDraft, not reviewed
Format revision1 · current
ResearchResearched
Researched2026-09-25

3 events in the review history: 2 observed, 1 reviewed. Latest: observed on 2026-09-25 by automation, project maintainer. Project-maintained review is not independent validation. The family record at this release.

Format

Provider format research from credential-evidence snapshot-2026.10.06.4 · records at 77ce761 · schema 1.8.0.

What it looks like

Descriptive pattern: ^[0-9a-f]{32}-us[0-9]{1,2}$

Parts are shown as recorded. Evidence classes belong to the facts below; no class is assigned to a part.

Format facts

Provider documented · mutable-property-source · current · observed 2026-09-23
Documentation for the one property varied in legacy twin fixtures (data-center suffix by example): the page states "if your API key is 0123456789abcdef0123456789abcde-us6, then the data center subdomain is us6" and that the <dc> URL prefix "corresponds to the data center for your account" — establishing a literal us<N> data-center suffix after the dash. It backs a marker twin only; the 32-byte hex body stays tool-corroborated and the positive tier is unchanged
- mailchimp.com/developer/marketing/docs/fundamentals/provider-documentation · last read 2026-09-25 · latest outcome read · supports the page states "if your API key is 0123456789abcdef0123456789abcde-us6, then the data center subdomain is us6" and that the <dc> URL prefix "corresponds to the data center for your account" — establishing a literal us<N> data-center suffix after the dash. It backs a marker twin only; the 32-byte hex body stays tool-corroborated and the positive tier is unchanged
Tool corroborated · tool-corroboration · current · observed 2026-09-23
Pinned scanner rules are consistent with the contract grammar (2 artifacts: gitleaks 8.30.1; trufflehog 3.97.4).
- gitleaks/gitleaks @ v8.30.1: config/gitleaks.tomlscanner-rule-source · last read 2026-10-04 · latest outcome read · supports gitleaks 8.30.1: gitleaks.toml
- trufflesecurity/trufflehog @ v3.97.4: pkg/detectors/mailchimp/mailchimp.goscanner-rule-source · last read 2026-09-23 · latest outcome read · supports trufflehog 3.97.4: mailchimp/mailchimp
Unresolved · dossier-research · current · observed 2026-09-25
Legacy dossier research (verdict ready, tier T2) cited 2 sources; the dossier does not attribute sources to individual properties.
- redact-secret/redact-secret @ 8b6a5fde52ecb4dfce13f09c7a947062d21483c7: docs/audits/evidence/582/README.mdproject-research-note · last read 2026-09-25 · latest outcome read · supports Final research evidence recorded by the legacy dossier
- mailchimp.com/developer/marketing/docs/fundamentals/provider-documentation · last read 2026-09-25 · latest outcome read · supports Cited by the legacy dossier research for this family
Unresolved · taxonomy-sources · current · observed 2026-09-25
The legacy taxonomy lists 1 source for this family. The taxonomy records no date; the dossier researchedAt is used as the observed-at date.
- mailchimp.com/developer/marketing/docs/fundamentals/provider-documentation · last read 2026-09-25 · latest outcome read · supports Listed as a source for this family in the legacy taxonomy

Open questions

No open question is recorded for this revision.

Benchmark dossier notes

From the provider dossier, as written. The evidence level above says how well the format is backed; a fact the dossier does not record is not shown.

Shape: 32 hex characters, a literal -us, and a one- or two-digit data center number. Provider text gives the shape only through examples: the fundamentals page shows a 31-hex-character body with -us6, while Mailchimp's own WordPress plugin shows 32 hex with -us19. Non-us data-center literals and body letters g-z are outside the benchmark claim since 2026-09-24.
Basis: T2. Every scanner rule, a 2009 staff post and 111 of 115 public code candidates use 32. Tools split on suffix digits (trufflehog 1 to 2, gitleaks exactly 2, Nosey Parker 1 to 3), on uppercase hex (gitleaks and Nosey Parker accept it, trufflehog does not; 2 of 115 candidates had A-F) and on keyword gating. The 2009 staff post advises against regex validation because keys may change.
Issuance: Mailchimp account API key page. Not attempted. The UI shows only the first four characters of a key afterwards.
Contract in core: detector-families.md (mailchimp_api_key, confidence-gated on a mailchimp keyword; the complete shape can also be read without the keyword).

In this benchmark

Fixture rows on the current run. Counts are for redact-secret in published · redact-secret 0.1.0-beta.14 mode.

Fixtures: 54
Left readable: 0
Redacted too much: 0
False alarms: 0

54 fixtures: 24 expect a redaction, 30 must stay quiet. See every row

redact-secret fixture counts by evidence level
Evidence level	Fixtures	Left readable	Too much	False alarms
T2Tool-corroborated	41	0	0	0
T3Project policy	9	0	0	0
T0Pending review	4	0	0	0

Every scanner on the same fixtures

In run order. Counts are what each scanner recorded on this family's fixtures, whichever rules it has; a scanner with no rule for the family has nothing to report on it.

Counts per scanner on this family's fixtures
Scanner	Fixtures	Left readable	Too much	False alarms
flare-redactRuntime library · 1.6.1 · Published npm package · secrets-only (pii, generic_assignment disabled) · JavaScript engineNo rule maps to it	54	22	1	0
gitleaksRepository scanner · 8.30.1 · Directory scan · default rules1 rule targets it	54	6	1	0
redact-secretProduct measured here · 0.1.0-beta.14 · Published npm package · default detectors1 detector mapped	54	0	0	0
trufflehogRepository scanner · 3.97.4 · Filesystem scan · verification disabled1 rule targets it	54	0	0	2

Benchmark dossier questions

Things the sources do not settle. They are listed so nobody reads them as settled.

Open caveat: The provider states the shape only by examples, one with a 31-character body; length 32 follows scanners and a 2009 staff regex. Hex case and data-center literals are undecided. Needs one issued key.

Looks like it, but isn't

Values the dossier records as resembling this credential without being one.

Collisions: the usNN label and the four-character key preview are public; a 32-hex body alone matches any MD5-style digest, which is why the detector is keyword-gated.

Scanner rules for this family

Mapped by hand (reviewed 2026-09-30) from each scanner's pinned rule file, never from what a scanner found on the fixtures.

Peer scanner rules that target this family
Scanner	Rule	What the rule matches
gitleaks · rules 8.30.1	`mailchimp-api-key`	mailchimp keyword + 32 hex + -us + digits
trufflehog · rules 3.97.4	`mailchimp`	32 hex + -us + 1-2 digits

No rule maps to this family in flare-redact, openredaction.

Find

Evidence level

Scanners

54 of 54 rows

Fixtures in this family

54 rows, redact-secret's outcome on each. Rows that need a look come first (0), then the rest in corpus order. Choose "Every scanner" to see each scanner's outcome for the same rows.

Fixtures in Marketing API key
Fixture	Kind and evidence	redact-secret
`mailchimp-api-key-actions-env`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-client-log`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-compose-env`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-curl-bearer`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-curl-user`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-debug-request-headers`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-env`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-handoff-note`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-heroku-config`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-long-twin`mailchimp · wrong-length	Must not flagT2 · Tool-corroborated · twin	Quiet
`mailchimp-api-key-marketing-client`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-node-setconfig`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-python-requests-auth`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-settings-json`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-sha1-width-twin`mailchimp · wrong-length	Must not flagT2 · Tool-corroborated · twin	Quiet
`mailchimp-api-key-shell-export`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-single-digit-datacenter-bare`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-single-digit-datacenter-quoted`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-single-digit-datacenter-unicode-crlf`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-tfvars`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-ticket-paragraph`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-two-digit-datacenter-bare`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-two-digit-datacenter-quoted`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-two-digit-datacenter-unicode-crlf`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-userinfo-url`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-v1-apikey-query`mailchimp · documented-format-literal	Must redactT2 · Tool-corroborated	Redacted
`mailchimp-api-key-alphabet-twin`mailchimp · unsettled-evidence-input	Pending reviewT0 · Pending · twin	Unscored
`mailchimp-api-key-audience-and-campaign-public-id`mailchimp · public-identifier	Must not flagT2 · Tool-corroborated	Quiet
`mailchimp-api-key-datacenter-move-prose`mailchimp · prose-mention	Must not flagT3 · Project policy	Quiet
`mailchimp-api-key-datacenter-note-prose`mailchimp · prose-mention	Must not flagT3 · Project policy	Quiet
`mailchimp-api-key-docs-template-placeholder`mailchimp · documentation-placeholder	Must not flagT3 · Project policy	Quiet
`mailchimp-api-key-label-prose`mailchimp · benign-lookalike	Must not flagT3 · Project policy	Quiet
`mailchimp-api-key-list-and-web-id-public-id`mailchimp · public-identifier	Must not flagT2 · Tool-corroborated	Quiet
`mailchimp-api-key-list-webhook-url-public-id`mailchimp · public-identifier	Must not flagT2 · Tool-corroborated	Quiet
`mailchimp-api-key-mask`mailchimp · benign-lookalike	Must not flagT3 · Project policy	Quiet
`mailchimp-api-key-no-separator-twin`mailchimp · boundary-violation	Must not flagT2 · Tool-corroborated · twin	Quiet
`mailchimp-api-key-process-env-reference`mailchimp · templated-reference	Must not flagT3 · Project policy	Quiet
`mailchimp-api-key-public-id`mailchimp · benign-lookalike	Must not flagT2 · Tool-corroborated	Quiet
`mailchimp-api-key-reference`mailchimp · benign-lookalike	Must not flagT3 · Project policy	Quiet
`mailchimp-api-key-s3-region-key-near-miss`mailchimp · format-near-miss	Must not flagT2 · Tool-corroborated	Quiet
`mailchimp-api-key-separator-twin`mailchimp · boundary-violation	Must not flagT2 · Tool-corroborated · twin	Quiet
`mailchimp-api-key-short-twin`mailchimp · wrong-length	Must not flagT2 · Tool-corroborated · twin	Quiet
`mailchimp-api-key-single-digit-datacenter-bare-twin`mailchimp · unsettled-evidence-input	Pending reviewT0 · Pending · twin	Unscored
`mailchimp-api-key-single-digit-datacenter-quoted-twin`mailchimp · unsettled-evidence-input	Pending reviewT0 · Pending · twin	Unscored
`mailchimp-api-key-single-digit-datacenter-unicode-crlf-twin`mailchimp · unsettled-evidence-input	Pending reviewT0 · Pending · twin	Unscored
`mailchimp-api-key-subscriber-hash-encoded-value`mailchimp · benign-encoded-value	Must not flagT2 · Tool-corroborated	Quiet
`mailchimp-api-key-subscriber-hash-path-encoded-value`mailchimp · benign-encoded-value	Must not flagT2 · Tool-corroborated	Quiet
`mailchimp-api-key-suffix-removed-twin`mailchimp · prefix-near-miss	Must not flagT2 · Tool-corroborated · twin	Quiet
`mailchimp-api-key-two-digit-datacenter-bare-twin`mailchimp · wrong-length	Must not flagT2 · Tool-corroborated · twin	Quiet
`mailchimp-api-key-two-digit-datacenter-quoted-twin`mailchimp · wrong-length	Must not flagT2 · Tool-corroborated · twin	Quiet

Sources

Researched 2026-09-25.

Documentation and code

mailchimp.com/developer/marketing/docs/fundamentals/

Research log

redact-secret/redact-secret#582Research issue
redact-secret/redact-secret#697Research issue
redact-secret/redact-secret#698Research issue
redact-secret/redact-secret#699Research issue
Final evidence, pinned to a commit/redact-secret/redact-secret/blob/8b6a5fde52ecb4dfce13f09c7a947062d21483c7/docs/audits/evidence/582/README.md