# Abstract API Phone Validation

**Canonical:** https://apis.io/providers/abstractapi-phone/  
**Website:** https://www.abstractapi.com  
**APIs profiled:** 1

Abstract API's Phone Number Validation & Verification API validates and verifies a phone number in a single REST request. Given a number (ideally in E.164 format) it returns whether the number is valid, its local and international formats, the country, the registered location, the line type (mobile, landline, VoIP, and more), and the carrier - useful for form validation, lead scoring, fraud prevention, and cleaning phone data. The endpoint is a single authenticated GET call with the API key passed as a query parameter, and Abstract offers a free tier alongside paid plans. Phone Validation is one product in the broader Abstract API suite, which also includes email validation, IP geolocation, company enrichment, and other data APIs; each product has its own host and its own API key.

## Kin Score — 34.3 / 100 (thin)

Scored 2026-08-24 under rubric 0.13.0. Trend: flat (-0.4 from 34.7).

| Facet | Score |
|---|---|
| Discoverability | 68.5 |
| Contract Quality | 56.5 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 23.7 |
| Developer Ergonomics | 21.4 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

Regulatory layer — **Telecommunications**: 16.7 (matched via tags).

## Agent readiness — 35.4 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | na |
| Error Semantics | verified |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| 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 |

## Access

Freemium · Open access — onboarding: open, pricing: freemium, trial: no (confidence: high).

## APIs (1)

- **Abstract API Phone Validation Phone Validation API** — Validate and verify a phone number and return carrier, line type, and location.

## Agentic access (1)

- **Abstractapi Phone Agentic Access** — 1 operation

## Security (2)

- **Abstractapi Phone Authentication** — apiKey · 1 scheme
- **Abstractapi Phone Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Abstractapi Phone Plans Pricing**

## Tags

Number Verification, Phone Validation, Phone Number, Phone Number Lookup, Verification, Carrier Lookup, Line Type, Data Validation

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