# Tollfair

> Tollfair is a graded data exchange for AI agents. We index official and commercial data APIs, let builders star the ones they'd pay for, and will grade each dataset on six tested dimensions. Sellers add a tollbooth; agents see the grade and pay per call over x402. Tollfair never holds funds.

Status: waitlist and catalogue are live. DQ ratings, payments and the tollbooth are not live yet. Every listing is currently ungraded.

## Key pages

- [Catalogue](https://www.tollfair.com/data.md): every listed API with status, source, licence and stars
- [How it works](https://www.tollfair.com/how-it-works.md): the toll, the grade and x402
- [Grading method (draft)](https://www.tollfair.com/method.md): six dimensions and the grade scale
- [List your data](https://www.tollfair.com/list.md): submit an API to the catalogue

## Machine-readable

- [catalog.json](https://www.tollfair.com/catalog.json): the full catalogue as JSON, filterable with ?country=, ?category=, ?status=, ?source=
- [openapi.json](https://www.tollfair.com/openapi.json): OpenAPI description of the catalogue feed
- [llms-full.txt](https://www.tollfair.com/llms-full.txt): catalogue and docs in one file
- Any page + `.md` returns markdown, or send `Accept: text/markdown`

## Catalogue

- [Company register](https://www.tollfair.com/data/companies-house/company-register.md): Companies House · Primary source · Ungraded · OGL v3 · ★ 1
- [Insolvency and corporate notices](https://www.tollfair.com/data/the-gazette/insolvency-notices.md): The Gazette · Primary source · Ungraded · OGL v3 · ★ 0
- [Care provider register and ratings](https://www.tollfair.com/data/cqc/care-provider-ratings.md): Care Quality Commission · Primary source · Ungraded · OGL v3 · ★ 0
- [Financial Services Register](https://www.tollfair.com/data/fca/financial-services-register.md): Financial Conduct Authority · Primary source · Ungraded · FCA Register terms · ★ 0
- [VAT registration check](https://www.tollfair.com/data/hmrc/vat-registration-check.md): HM Revenue & Customs · Primary source · Ungraded · HMRC API terms · ★ 0
- [Charity register](https://www.tollfair.com/data/charity-commission/charity-register.md): Charity Commission · Primary source · Ungraded · OGL v3 · ★ 0
- [Price paid data](https://www.tollfair.com/data/hm-land-registry/price-paid-data.md): HM Land Registry · Primary source · Ungraded · OGL v3 · ★ 0
- [Food hygiene ratings](https://www.tollfair.com/data/food-standards-agency/food-hygiene-ratings.md): Food Standards Agency · Primary source · Ungraded · OGL v3 · ★ 0
- [Crime and outcomes](https://www.tollfair.com/data/data-police-uk/crime-and-outcomes.md): data.police.uk · Primary source · Ungraded · OGL v3 · ★ 0
- [Flood monitoring](https://www.tollfair.com/data/environment-agency/flood-monitoring.md): Environment Agency · Primary source · Ungraded · OGL v3 · ★ 0
- [Economic statistics](https://www.tollfair.com/data/ons/economic-statistics.md): Office for National Statistics · Primary source · Ungraded · OGL v3 · ★ 0
- [Organisation data](https://www.tollfair.com/data/nhs-ods/organisation-data.md): NHS Organisation Data Service · Primary source · Ungraded · OGL v3 · ★ 0
- [Vehicle enquiry](https://www.tollfair.com/data/dvla/vehicle-enquiry.md): DVLA · Primary source · Ungraded · DVLA API terms · ★ 0
- [Transport for London unified API](https://www.tollfair.com/data/tfl/unified-api.md): Transport for London · Primary source · Ungraded · TfL open data terms · ★ 0
- [World development indicators](https://www.tollfair.com/data/world-bank/world-development-indicators.md): World Bank · Primary source · Ungraded · CC BY 4.0 · ★ 0
- [Research works](https://www.tollfair.com/data/openalex/research-works.md): OpenAlex · Aggregate · Ungraded · CC0 · ★ 0
- [UK company insolvency notices](https://www.tollfair.com/data/liqui/uk-insolvency-notices.md): LIQUI · Claimed · Ungraded · Commercial · terms on request · ★ 0
- [England care home ratings](https://www.tollfair.com/data/homesplace/england-care-home-ratings.md): Homesplace · Claimed · Ungraded · Commercial · terms on request · ★ 0
- [African university research outputs](https://www.tollfair.com/data/maratto/african-university-research.md): MARATTO · Claimed · Ungraded · Commercial · terms on request · ★ 0