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Get early access

the graded data exchange

Stop blocking AI agents.

Charge them per call instead. Agents will see your price and a tested quality rating, then pay you directly. Building agents? Find the data APIs worth paying for.

Which describes you?

Sellers get first access to the tollbooth. Builders get first access to rated APIs.

Browse 19 data APIs and star the ones you'd pay for
$ tollfair · live cataloguepreview
19
APIs indexed

Star the datasets you'd pay for. The most wanted get rated first.

the problem

Scraped for free, or blocked and earning nothing.

Right now most sites can only say yes to every agent, or no.

allow all200

Scraped for free

Every crawler takes the data. You pay the hosting bill and get nothing back.

block all403

Blocked, earning nothing

Safe, but you turn away the agents that would have paid to use your data.

tollfair402

Let the verified ones in

Agents see your price and a tested quality rating, then pay per call. You set the rules. Coming soon.

how it works

PREVIEW · not live yet

Ask. See the rating. Pay. Receive.

One request, one retry with payment. No sign-up, no API key, no invoice.

The full flow
  1. 01

    Ask

    Your agent calls the seller's API like any other endpoint.

  2. 02

    See price and grade

    The API replies 402 Payment Required, the HTTP code for “pay first”, with the price, rating, source and licence.

  3. 03

    Pay

    The agent retries with payment over x402, an open standard for paying over plain HTTP. No account, no invoice.

  4. 04

    Receive

    Data comes back with a receipt. No data, no charge.

  5. 05

    Seller paid

    Payment lands in the seller's own wallet or Stripe account, directly.

the grade

Credit ratings for data.

Data Quality (DQ) ratings, tested against the source on six measures. Stars can't buy one.

DQ ADQ BDQ CDQ DDQ E

Draft method. Scored 0–100, banded A to E. No ratings issued yet. Read it →

  • 01

    Provenance

    Who holds the original

  • 02

    Freshness

    Lag behind the source

  • 03

    Accuracy & validity

    Matches the source and its schema

  • 04

    Completeness

    Coverage of records and fields

  • 05

    Licence clarity

    Clear terms for reuse

  • 06

    Reliability

    Uptime, latency, errors, schema changes

the catalogue

Public and commercial data APIs. One catalogue.

19 so far. Star what you'd pay for; we rate the most wanted first.

Browse all 19
  • Company register

    Companies House · UK

    ★ Company register

    Star it, and we'll grade the most wanted first.

    Stars need a waitlist spot so one person counts once. Your email stays private; only the count is public.

    Which describes you?

    Primary source · Ungraded
    Category
    Companies
    Licence
    [OGL v3]
  • Insolvency and corporate notices

    The Gazette · UK

    ★ Insolvency and corporate notices

    Star it, and we'll grade the most wanted first.

    Stars need a waitlist spot so one person counts once. Your email stays private; only the count is public.

    Which describes you?

    Primary source · Ungraded
    Category
    Companies
    Licence
    [OGL v3]
  • Care provider register and ratings

    Care Quality Commission · UK

    ★ Care provider register and ratings

    Star it, and we'll grade the most wanted first.

    Stars need a waitlist spot so one person counts once. Your email stays private; only the count is public.

    Which describes you?

    Primary source · Ungraded
    Category
    Health and care
    Licence
    [OGL v3]
  • Financial Services Register

    Financial Conduct Authority · UK

    ★ Financial Services Register

    Star it, and we'll grade the most wanted first.

    Stars need a waitlist spot so one person counts once. Your email stays private; only the count is public.

    Which describes you?

    Primary source · Ungraded
    Category
    Finance
    Licence
    [FCA Register terms]
  • VAT registration check

    HM Revenue & Customs · UK

    ★ VAT registration check

    Star it, and we'll grade the most wanted first.

    Stars need a waitlist spot so one person counts once. Your email stays private; only the count is public.

    Which describes you?

    Primary source · Ungraded
    Category
    Finance
    Licence
    [HMRC API terms]
  • Charity register

    Charity Commission · UK

    ★ Charity register

    Star it, and we'll grade the most wanted first.

    Stars need a waitlist spot so one person counts once. Your email stays private; only the count is public.

    Which describes you?

    Primary source · Ungraded
    Category
    Companies
    Licence
    [OGL v3]

trust

We never touch the money.

When payments go live, agents pay sellers directly. We never hold the money; we check the rating and log the receipt.

AgentSeller wallet

USDC (a US-dollar stablecoin), settled only after the data comes back

Tollbooth (our code, on your server): checks the rating · logs the receipt

Rated data. Fair tolls.

Get early access. Star the datasets you'd pay for, and we rate the most wanted first.

Which describes you?