# IRS

**Canonical:** https://apis.io/providers/irs/  
**Website:** https://www.irs.gov/  
**APIs profiled:** 5

The US Internal Revenue Service (IRS) provides REST APIs and Application-to-Application (A2A) interfaces for tax information access, identity verification, income verification, information return filing, and taxpayer account data. Authorized applications can integrate with IRS e-Services for TIN matching, the Transcript Delivery System (TDS), the Income Verification Express Service (IVES), the Information Return Intake System (IRIS) for 1099 series filings, and the Modernized e-File (MeF) system for electronic tax return submission. Access requires enrollment in IRS e-Services and obtaining an API client ID.

## Kin Score — 23.0 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 23.0).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 36.8 |
| Developer Ergonomics | 33.3 |
| Commercial Clarity | 28.9 |
| Access Clarity | 28.9 |

Regulatory layer — **Government & Public Sector**: 11.1 (matched via tags).

## Agent readiness — 3.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Free — onboarding: unknown, pricing: free, trial: no (confidence: medium).

## APIs (5)

- **IRS TIN Matching API** — Allows payers to submit Taxpayer Identification Number (TIN) and name combinations to be matched against IRS records before filing information returns. Supports interactive matc...
- **IRS Income Verification Express Service (IVES) API** — Application-to-Application (A2A) API allowing authorized participants such as lenders, banks, credit unions, and financial institutions to request IRS tax transcripts for income...
- **IRS Information Return Intake System (IRIS) API** — Application-to-Application (A2A) API for electronic filing of 1099 series information returns directly with the IRS. Supports high-volume automated submission by software develo...
- **IRS Modernized e-File (MeF) API** — Application-to-Application (A2A) system enabling authorized software developers and transmitters to electronically submit tax returns directly to the IRS. Supports individual an...
- **IRS Transcript Delivery System (TDS) API** — e-Services API allowing authorized tax professionals and institutions to retrieve tax transcripts programmatically. Part of the IRS e-Services suite alongside TIN Matching and t...

## Security (1)

- **Irs Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Plans (1)

- **Irs Plans Pricing**

## Tags

IRS, Tax, Federal-Government, TIN Matching, Income Verification, Information Returns, E-File, Identity Verification, Taxpayer

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/irs/). Scores are computed from the provider's own public artifacts under a published rubric.