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the graded data exchange

Stop blocking AI agents.

Let the verified ones in. Grade your data, set a price, get paid per call.

Which describes you?

Or browse 19 official APIs
$ tollfair · live cataloguepreview
19
APIs indexed

Star datasets to move up the line.

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 DQ rating and price, pay per call, and you set the rules.

how it works

Ask. See the rating. Pay. Receive.

One HTTP request. No accounts, no invoices.

The full flow
  1. 01

    Ask

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

  2. 02

    See price and grade

    A 402 reply carries the price, grade, source and licence.

  3. 03

    Pay

    The agent retries with an x402 payment. No account, no invoice.

  4. 04

    Receive

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

  5. 05

    Seller paid

    Settlement lands in the seller's own wallet, directly.

the grade

Data Quality (DQ) ratings.

Tested against the source on six counts.

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

Every official data API. One catalogue.

Star what you'd pay for. We grade 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.

Agents pay sellers directly over x402. We check the grade and log the call.

AgentSeller wallet

USDC, settled only after data returns

Tollfair: checks the grade · logs the receipt

Rated data. Fair tolls.

Get early access. Star the datasets you'd pay for and move up the line.

Which describes you?