What happened?
Running the root check against https://docs.datadoghq.com reports llms.txt coverage of approximately 7,465 / 24,364 pages.
Datadog's default English documentation is unprefixed. Translations use these prefixes:
/fr/**/ja/**/ko/**/es/**
The sitemap contains approximately 11,061 localized URLs out of 26,513 total URLs (41.7%).
detectLocalePosition() only recognizes multiple locale codes when they collectively cover more than 50% of the URLs. Because Datadog's translated pages are below that threshold, locale detection returns null and the translated pages remain in the llms-txt-coverage denominator.
The single-locale structural-duplication fallback does not apply because Datadog has four detected locale codes.
Product-scoped checks such as https://docs.datadoghq.com/infrastructure pass because base-path scoping naturally removes the locale-prefixed copies.
Public result: https://buildwithfern.com/agent-score/company/datadog-infrastructure-and-application-monitoring#checks
What did you expect?
The coverage check should recognize the unprefixed pages as the default locale and exclude recognized locale-prefixed translations from the coverage denominator, even when translations comprise less than 50% of the sitemap.
Alternatively, an explicitly configured preferred/default locale should be honored by llms-txt-coverage.
How to reproduce
Using afdocs v0.18.7:
npx afdocs@0.18.7 check https://docs.datadoghq.com \
--format json \
--score
Environment
- afdocs version: v0.18.7
- Node.js version: 24.x
- OS: macOS Tahoe 26.5.1
Additional context
What happened?
Running the root check against https://docs.datadoghq.com reports llms.txt coverage of approximately 7,465 / 24,364 pages.
Datadog's default English documentation is unprefixed. Translations use these prefixes:
/fr/**/ja/**/ko/**/es/**The sitemap contains approximately 11,061 localized URLs out of 26,513 total URLs (41.7%).
detectLocalePosition() only recognizes multiple locale codes when they collectively cover more than 50% of the URLs. Because Datadog's translated pages are below that threshold, locale detection returns
nulland the translated pages remain in thellms-txt-coveragedenominator.The single-locale structural-duplication fallback does not apply because Datadog has four detected locale codes.
Product-scoped checks such as https://docs.datadoghq.com/infrastructure pass because base-path scoping naturally removes the locale-prefixed copies.
Public result: https://buildwithfern.com/agent-score/company/datadog-infrastructure-and-application-monitoring#checks
What did you expect?
The coverage check should recognize the unprefixed pages as the default locale and exclude recognized locale-prefixed translations from the coverage denominator, even when translations comprise less than 50% of the sitemap.
Alternatively, an explicitly configured preferred/default locale should be honored by
llms-txt-coverage.How to reproduce
Using afdocs v0.18.7:
Environment
Additional context