redact-secret · Report
Collection access key
PMAT- followed by 26 characters; a read-only key for one collection's JSON, shared through the collection URL's access_key parameter.
Registry detector postman-collection-access-key since redact-secret#700 (#773, registry pinned at 3144bb3), authored under #259. Postman documents the credential but no shape; the 26-character uppercase alphanumeric body follows GitLab's rule (T2).
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.
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
^PMAT-[A-Z0-9]{26}$
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 2026-09-24Documentation for the one property varied in legacy twin fixtures (masked PMAT- collection access key): Postman documents the collection access key as a read-only credential for one collection's JSON (Share via API), valid for 60 days of inactivity, and renders it masked as PMAT- followed by asterisks and four trailing characters (26 in all). It states no alphabet. Twins mutate the prefix, its delimiter or the body length
- learning.postman.com/api-docs/api-reference/collection-access-keys/get-collection-access-keysprovider-documentation · last read 2026-09-25 · latest outcome read · supports Postman documents the collection access key as a read-only credential for one collection's JSON (Share via API), valid for 60 days of inactivity, and renders it masked as PMAT- followed by asterisks and four trailing characters (26 in all). It states no alphabet. Twins mutate the prefix, its delimiter or the body length
Unresolved ·
tool-corroboration· current · observed 2026-09-24Pinned scanner rules are consistent with the contract grammar (1 artifact: GitLab secret-detection-rules).
- gitlab.com/gitlab-org/security-products/secret-detection/secret-detection-rules/-/blob/e1c7e83815a7e55cc1514dd59d4e56459e39cbfb/rules/mit/postman/postman.tomlscanner-rule-source · last read 2026-09-25 · latest outcome read · supports GitLab secret-detection-rules: PostmanCollectionAccessKey
Provider documented ·
field-credential· current · observed 2026-09-24credential: read-only collection access key, 60-day inactivity expiry, shared via the collection JSON URL
- learning.postman.com/docs/developer/postman-api/authentication/provider-documentation · last read 2026-09-25 · latest outcome read · supports credential: read-only collection access key, 60-day inactivity expiry, shared via the collection JSON URL
- learning.postman.com/docs/collaborating-in-postman/sharing/provider-documentation · last read 2026-09-25 · latest outcome read · supports credential: read-only collection access key, 60-day inactivity expiry, shared via the collection JSON URL
Provider documented ·
field-prefix· current · observed 2026-09-24prefix: PMAT-
- learning.postman.com/api-docs/api-reference/collection-access-keys/get-collection-access-keysprovider-documentation · last read 2026-09-25 · latest outcome read · supports masked display
Unresolved ·
field-body-length· current · observed 2026-09-24body length: exactly 26 characters (The provider's masked display (asterisks + 4) counts to 26, which agrees but is not a statement.)
- gitlab.com/gitlab-org/security-products/secret-detection/secret-detection-rules/-/blob/e1c7e83815a7e55cc1514dd59d4e56459e39cbfb/rules/mit/postman/postman.tomlscanner-rule-source · last read 2026-09-25 · latest outcome read · supports body length: exactly 26 characters
Unresolved ·
field-body-alphabet· current · observed 2026-09-24body alphabet: [A-Z0-9] (One tool only; the product accepts lowercase too. No case twin.)
- gitlab.com/gitlab-org/security-products/secret-detection/secret-detection-rules/-/blob/e1c7e83815a7e55cc1514dd59d4e56459e39cbfb/rules/mit/postman/postman.tomlscanner-rule-source · last read 2026-09-25 · latest outcome read · supports body alphabet: [A-Z0-9]
Unresolved ·
field-ulid-body· current · observed 2026-09-24ULID body: the body may be a ULID (26 Crockford base32 characters with a timestamp prefix): every example in GitLab's rule has that shape (Not claimed. Positives use the rule's wider [A-Z0-9]{26}; no fixture asserts silence on a non-ULID body.)
- gitlab.com/gitlab-org/security-products/secret-detection/secret-detection-rules/-/blob/e1c7e83815a7e55cc1514dd59d4e56459e39cbfb/rules/mit/postman/postman.tomlscanner-rule-source · last read 2026-09-25 · latest outcome read · supports rule examples; not copied into any fixture
Unresolved ·
listed-references· current · observed 2026-09-24The legacy contract lists 3 references without stating which property each supports.
- docs.github.com/en/code-security/secret-scanning/introduction/supported-secret-scanning-patternsprovider-documentation · last read 2026-10-05 · latest outcome read · supports Listed as a reference by the legacy contract
- learning.postman.com/docs/developer/postman-api/authentication/provider-documentation · last read 2026-09-25 · latest outcome read · supports Listed as a reference by the legacy contract
- learning.postman.com/docs/collaborating-in-postman/sharing/provider-documentation · last read 2026-09-25 · latest outcome read · supports Listed as a reference by the legacy contract
Tool corroborated ·
dossier-research· current · observed 2026-09-25Legacy dossier research (verdict ready, tier T2) cited 4 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
- gitlab.com/gitlab-org/security-products/secret-detection/secret-detection-rules/-/blob/e1c7e83815a7e55cc1514dd59d4e56459e39cbfb/rules/mit/postman/postman.tomlscanner-rule-source · last read 2026-09-25 · latest outcome read · supports Cited by the legacy dossier research for this family
- learning.postman.com/docs/collaborating-in-postman/sharing/provider-documentation · last read 2026-09-25 · latest outcome read · supports Cited by the legacy dossier research for this family
- learning.postman.com/api-docs/api-reference/collection-access-keys/get-collection-access-keysprovider-documentation · last read 2026-09-25 · latest outcome read · supports Cited by the legacy dossier research for this family
Unresolved ·
taxonomy-sources· current · observed 2026-09-25The legacy taxonomy lists 1 source for this family. The taxonomy records no date; the dossier researchedAt is used as the observed-at date.
- learning.postman.com/docs/collaborating-in-postman/sharing/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
PMAT-followed by 26 characters. Postman renders a masked key with a four-character tail and a 26-character count, valid 60 days after last use, and states no alphabet.- Basis
- T2. The uppercase
[A-Z0-9]body comes from GitLab's secret detection rule alone (pinned above); the product accepts either case. GitHub's partner list haspostman_collection_keybesidepostman_api_key. - Issuance
- collection sharing in Postman, or the collection access keys API. Not attempted.
- Contract in core
- detector-families.md (
postman_collection_access_key, always redacted). #700 asked whetherPMAT-was its own family or an unsupported form; it is now a registry detector.
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
- 42
- Left readable
- 0
- Redacted too much
- 0
- False alarms
- 0
42 fixtures: 18 expect a redaction, 24 must stay quiet. See every row
| Evidence level | Fixtures | Left readable | Too much | False alarms |
|---|---|---|---|---|
| T2Tool-corroborated | 33 | 0 | 0 | 0 |
| T3Project policy | 9 | 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.
| 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 | 42 | 18 | 0 | 0 |
| gitleaksRepository scanner · 8.30.1 · Directory scan · default rulesNo rule maps to it | 42 | 4 | 0 | 0 |
| redact-secretProduct measured here · 0.1.0-beta.14 · Published npm package · default detectors1 detector mapped | 42 | 0 | 0 | 0 |
| trufflehogRepository scanner · 3.97.4 · Filesystem scan · verification disabledNo rule maps to it | 42 | 18 | 0 | 0 |
Benchmark dossier questions
Things the sources do not settle. They are listed so nobody reads them as settled.
- Open caveat
- The PMAT- prefix and 26-character count are shown masked in provider docs; the uppercase alphanumeric body comes from GitLab's rule alone. No issued key observed.
Looks like it, but isn't
Values the dossier records as resembling this credential without being one.
- Collisions
- the
access_keyquery parameter of a collection URL is where the value appears.PMAK-keys are distinct.
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.
No peer rule maps to this family
None of the reviewed peer scanners has a rule that can match a credential of this family.
None mapped
Fixtures in this family
42 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.
| Fixture | Kind and evidence | redact-secret |
|---|---|---|
postman-collection-access-key-actions-newmanpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-chat-sharepostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-ci-logpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-compose-envpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-curl-collection-jsonpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-dotenvpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-exportpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-key-shape-barepostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-key-shape-quotedpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-key-shape-unicode-crlfpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-newman-jsonpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-newman-runpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-share-configpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-share-outputpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-share-via-apipostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-twin-base-dotenvpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-twin-base-exportpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-twin-base-urlpostman · documented-format-literal | Must redactT2 · Tool-corroborated | Redacted |
postman-collection-access-key-api-key-prefix-twinpostman · prefix-near-miss | Must not flagT2 · Tool-corroborated · twin | Quiet |
postman-collection-access-key-base64-uid-encoded-valuepostman · benign-encoded-value | Must not flagT2 · Tool-corroborated | Quiet |
postman-collection-access-key-collection-uid-public-idpostman · public-identifier | Must not flagT2 · Tool-corroborated | Quiet |
postman-collection-access-key-docs-placeholder-placeholderpostman · documentation-placeholder | Must not flagT3 · Project policy | Quiet |
postman-collection-access-key-document-code-near-misspostman · format-near-miss | Must not flagT2 · Tool-corroborated | Quiet |
postman-collection-access-key-env-reference-referencepostman · templated-reference | Must not flagT3 · Project policy | Quiet |
postman-collection-access-key-key-guidance-prosepostman · prose-mention | Must not flagT3 · Project policy | Quiet |
postman-collection-access-key-label-prosepostman · benign-lookalike | Must not flagT3 · Project policy | Quiet |
postman-collection-access-key-long-body-twinpostman · wrong-length | Must not flagT2 · Tool-corroborated · twin | Quiet |
postman-collection-access-key-long-body-twin-wrong-lengthpostman · wrong-length | Must not flagT2 · Tool-corroborated · twin | Quiet |
postman-collection-access-key-lowercase-prefix-twinpostman · prefix-near-miss | Must not flagT2 · Tool-corroborated · twin | Quiet |
postman-collection-access-key-maskpostman · benign-lookalike | Must not flagT3 · Project policy | Quiet |
postman-collection-access-key-masked-key-list-placeholderpostman · documentation-placeholder | Must not flagT3 · Project policy | Quiet |
postman-collection-access-key-postman-variable-referencepostman · templated-reference | Must not flagT3 · Project policy | Quiet |
postman-collection-access-key-prefix-onlypostman · benign-lookalike | Must not flagT2 · Tool-corroborated | Quiet |
postman-collection-access-key-prefix-only-near-misspostman · format-near-miss | Must not flagT2 · Tool-corroborated | Quiet |
postman-collection-access-key-public-share-link-public-idpostman · public-identifier | Must not flagT2 · Tool-corroborated | Quiet |
postman-collection-access-key-referencepostman · benign-lookalike | Must not flagT3 · Project policy | Quiet |
postman-collection-access-key-sharing-note-prosepostman · prose-mention | Must not flagT3 · Project policy | Quiet |
postman-collection-access-key-short-bodypostman · benign-lookalike | Must not flagT2 · Tool-corroborated | Quiet |
postman-collection-access-key-short-body-twinpostman · wrong-length | Must not flagT2 · Tool-corroborated · twin | Quiet |
postman-collection-access-key-short-body-twin-wrong-lengthpostman · wrong-length | Must not flagT2 · Tool-corroborated · twin | Quiet |
postman-collection-access-key-underscore-delimiter-twinpostman · boundary-violation | Must not flagT2 · Tool-corroborated · twin | Quiet |
postman-collection-access-key-underscore-delimiter-twin-boundary-violationpostman · boundary-violation | Must not flagT2 · Tool-corroborated · twin | Quiet |
Sources
Researched 2026-09-25.
Documentation and code
- learning.postman.com/docs/collaborating-in-postman/sharing/
- learning.postman.com/api-docs/api-reference/collection-access-keys/get-collection-access-keys
- gitlab.com/gitlab-org/security-products/secret-detection/secret-detection-rules/-/blob/e1c7e83815a7e55cc1514dd59d4e56459e39cbfb/rules/mit/postman/postman.toml
Research log
- redact-secret/redact-secret#582Research issue
- redact-secret/redact-secret#700Research issue
- redact-secret/redact-secret-benchmarks#259Research issue
- Final evidence, pinned to a commit/redact-secret/redact-secret/blob/8b6a5fde52ecb4dfce13f09c7a947062d21483c7/docs/audits/evidence/582/README.md