Rates and Limits

A free, keyless open-data publisher exposing US federal and state tax, payroll, benefits, and wage figures as JSON. Every figure ships bundled with provenance: the exact quoted sentence from the governing government document, byte offsets, sha256-stamped source snapshots, and last-verified dates.

Rates and Limits publishes 1 API on the APIs.io network. Tagged areas include Tax, Payroll, Benefits, IRS, and minimum-wage.

🌐 Visit website 📡 Source on GitHub
18.3/100 emerging ▬ flat Agent 5/100 human only Front door AI 1/6 silent Full breakdown ↓
scored 2026-10-04 · rubric v0.23.0
1 API 1 MCP Servers
TaxPayrollBenefitsIRSminimum-wageOpen DataGovernmentComplianceFintechHuman ResourcesReference DataJSONllms-txt

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-04 · rubric v0.23.0
Composite quality — 18.3/100 · emerging
Contract Quality 0.0 / 21
Developer Ergonomics 5.7 / 17
Access Clarity 3.6 / 17
Operational Transparency 0.0 / 11
Contract Governance 0.0 / 10
Discoverability 5.5 / 9
Regulatory Posture 2.9 / 15
Agent readiness — 5/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Regulatory Posture applies to this provider. Its tags matched the Government & Public Sector regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/rates-and-limits: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Rates and Limits JSON API

Keyless, unauthenticated REST-style JSON API serving US tax, payroll, benefits, and wage figures with bundled provenance. Includes a self-describing catalog (index.json) and a b...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Rates and Limits MCP Server

No official MCP server exists. This is a DERIVED candidate tool list mapped from the five documented, keyless JSON endpoints, offered as a shape a server could take. No endpoint...

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Rates And Limits Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Rates And Limits Rate Limits

0 limits

RATE LIMITS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Rates And Limits Authentication

0 schemes

SECURITY

Rates And Limits Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
name: Rates and Limits
description: 'A free, keyless open-data publisher exposing US federal and state tax, payroll, benefits, and wage figures as
  JSON. Every figure ships bundled with provenance: the exact quoted sentence from the governing government document, byte
  offsets, sha256-stamped source snapshots, and last-verified dates.'
url: https://raw.githubusercontent.com/api-evangelist/rates-and-limits/refs/heads/main/apis.yml
created: '2026-09-14'
modified: '2026-09-14'
specificationVersion: '0.21'
x-enrichment:
  date: '2026-09-14'
  status: enriched
  artifacts_added: 11
  pass: local-v3
tags:
- Tax
- Payroll
- Benefits
- IRS
- minimum-wage
- Open Data
- Government
- Compliance
- Fintech
- Human Resources
- Reference Data
- JSON
- llms-txt
tags_raw:
- tax
- payroll
- benefits
- irs
- minimum-wage
- open-data
- government
- compliance
- fintech
- hr
- reference-data
- json
- llms-txt
apis:
- name: Rates and Limits JSON API
  description: Keyless, unauthenticated REST-style JSON API serving US tax, payroll, benefits, and wage figures with bundled
    provenance. Includes a self-describing catalog (index.json) and a bulk current-figures endpoint (latest.json).
  humanURL: https://ratesandlimits.com/api/
  baseURL: https://ratesandlimits.com/api/v1/
  tags:
  - Tax
  - Payroll
  - Benefits
  - IRS
  - minimum-wage
  - Open Data
  - Government
  - Compliance
  - Fintech
  - Human Resources
  - Reference Data
  - JSON
  - llms-txt
  tags_raw:
  - tax
  - payroll
  - benefits
  - irs
  - minimum-wage
  - open-data
  - government
  - compliance
  - fintech
  - hr
  - reference-data
  - json
  - llms-txt
  properties:
  - type: Documentation
    url: https://ratesandlimits.com/api/
  - type: APIReference
    url: https://ratesandlimits.com/api/
  - type: LLMsTxt
    url: https://ratesandlimits.com/llms.txt
  - type: TermsOfService
    url: https://ratesandlimits.com/terms
  - type: PrivacyPolicy
    url: https://ratesandlimits.com/privacy
  - type: Support
    url: https://ratesandlimits.com/contact
  - type: Authentication
    url: authentication/rates-and-limits-authentication.yml
  - type: Conventions
    url: conventions/rates-and-limits-conventions.yml
  - type: RateLimits
    url: rate-limits/rates-and-limits-rate-limits.yml
  - type: Plans
    url: plans/rates-and-limits-plans-pricing.yml
  - type: Components
    url: components/rates-and-limits-components.yml
  - type: DataModel
    url: data-model/rates-and-limits-data-model.yml
  - type: Lifecycle
    url: lifecycle/rates-and-limits-lifecycle.yml
  - type: MCPServer
    url: mcp/rates-and-limits-mcp.yml
maintainers:
- FN: Rates and Limits
  url: https://ratesandlimits.com/
generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 95
  at: '2026-09-14T05:41:52.039Z'
common:
- type: Website
  url: https://ratesandlimits.com/
- type: DomainSecurity
  url: security/rates-and-limits-domain-security.yml

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