# USACallerLookup

**Canonical:** https://apis.io/providers/usacallerlookup/  
**Website:** https://www.usacallerlookup.com/  
**APIs profiled:** 1

A free, read-only JSON REST API over US phone-numbering data and FTC robocall complaint records. No API key or signup required; access is throttled at 60 requests/minute per IP. Data is sourced from FTC Do Not Call complaints and the NANPA registry and dedicated to the public domain under CC0.

## Kin Score — 30.8 / 100 (thin)

Scored 2026-09-14 under rubric 0.22.0.

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 33.3 |
| Contract Governance | 4.5 |
| Operational Transparency | 26.3 |
| Developer Ergonomics | 44.6 |
| Access Clarity | 10.5 |

Regulatory layer — **Telecommunications**: 29.2 (matched via tags).

## Agent readiness — 25.2 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | na |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | na |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## APIs (1)

- **USACallerLookup Free Phone Lookup API** — No-auth, read-only REST API with three GET endpoints: reverse phone number lookup, area-code aggregates, and dataset stats. Backed by a public OpenAPI 3.1.0 contract.

## Security (2)

- **Usacallerlookup Authentication** — 0 schemes
- **Usacallerlookup Domain Security** — TLSv1.3 · DMARC

## Plans (1)

- **Usacallerlookup Plans Pricing**

## Tags

Phone Lookup, Caller ID, robocall, FTC, Telecom, Open Data, Anti-Fraud

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