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Usaref

Serves US government reference data over an API, with each value linked to its official source and effective date.

From $10 onceActively maintained

Developer toolsFor developersUsage-based pricing
usaref.dev ↗
Open usaref.devAlternativesSet it up for my teamIs Usaref yours? Claim the card →
At a glanceswept Oct 14, 2026

≈ 4visits/mo

Little sign of use · estimate, read Oct 14, 2026

For
developers and AI agents needing cited North American government rates and figures via API
Price
From $10 oncepricing page, read Oct 20, 2026
Activity
Actively maintainedsite updated 7 days ago
Runs as
API
Used for
  • look up current policy rate and inflation for a country
  • validate tax ID and VAT number formats offline
  • calculate VAT net and gross amounts
read off usaref.dev on Oct 20, 2026
Worth knowingcomputed from what we read · each with its source
Pricingpricing page, read Oct 20, 2026

From $10 once

pricing page

The companyeach fact with its source · read Oct 20, 2026
  • Domain since2026domain registered
  • HeadquartersBellville, South Africaper their About page
How a program reaches itfound, not claimed · read Oct 20, 2026
  • MCP serverdev.usaref/reference-dataverified in the MCP registry
  • Stateanswers, 32 toolschecked 2026-10-20
  • Address to connectusaref.dev/mcp
  • OpenAPI spec43 pathsthe spec ↗
  • Status pagelinked from the homepageusaref.dev/status ↗

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Developer toolsby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

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Questions this page answers
  • What is Usaref?

    Serves US government reference data over an API, with each value linked to its official source and effective date. It is listed in the Atlas under Developer tools.

  • Who is Usaref for?

    developers and AI agents needing cited North American government rates and figures via API

  • How much does Usaref cost?

    Paid plans start at $10 once, per Usaref's pricing page on 2026-10-20.

  • Do people use Usaref?

    Little sign of use: ≈ 4 visits/mo · estimate, 2026-10.

  • Is Usaref still maintained?

    Actively maintained: site updated 7 days ago.

  • How do I cancel Usaref?

    In its own words (terms of service, 2026-10-20): “You can cancel at any time, with effect from the end of the month you have paid for, and the key stops when a renewal is not paid.”

  • What are alternatives to Usaref?

    In Developer tools, by use: GreenCalculus, Tabstack, ctxd, APIVerve, LinkList, Microsoft.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk