Telefono website screenshot

Telefono

Telefono is a phone number intelligence and validation API platform providing real-time phone number lookup, validation, carrier information, line type detection, and number formatting services for developers. The platform helps businesses verify user phone numbers, detect fraud, improve deliverability of SMS campaigns, and enrich contact data with carrier and geographic information.

Telefono publishes 4 APIs on the APIs.io network, including Batch API, Carrier API, Format API, and 1 more. Tagged areas include Carrier Lookup, Data Enrichment, Fraud Prevention, Number Intelligence, and Number Verification.

The Telefono catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Telefono’s developer surface includes authentication, getting-started guide, signup flow, pricing, support, GitHub presence, and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub
50.3/100 developing ▼ -7.5 Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessEnterpriseSelf serve
4 APIs
Carrier LookupData EnrichmentFraud PreventionNumber IntelligenceNumber VerificationPhone LookupPhone ValidationTelecommunications

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 50.3/100 · developing
Contract Quality 16.5 / 25
Developer Ergonomics 5.2 / 20
Commercial Clarity 12.1 / 20
Operational Transparency 5.5 / 13
Governance 7.0 / 12
Discoverability 8.2 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/telefono: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 4

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

Telefono Batch API

Batch validation for multiple numbers

Telefono Carrier API

Carrier lookup endpoints

Telefono Format API

Number formatting and parsing endpoints

Telefono Validation API

Phone number validation endpoints

Open Collections 3

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Telefono Carrier Lookup API

OPEN COLLECTION

Telefono Number Formatting API

OPEN COLLECTION

Telefono Phone Validation API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Telefono Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Telefono Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Telefono Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Telefono Context

4 classes · 18 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Telefono API Rules

5 rules · 4 warnings 1 info

SPECTRAL

Telefono API Rules

11 rules · 5 errors 4 warnings 2 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Telefono Validation Result

14 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Telefono Validation Result Structure

0 properties

JSON STRUCTURE

Examples 2

Example request and response payloads for these APIs.

Telefono Carrier Lookup Example

2 fields

EXAMPLE

Telefono Validate Number Example

2 fields

EXAMPLE

Security Posture 1

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

Telefono Authentication

apiKey · 1 scheme

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Telefono Agentic Access

4 operations · 1 acting

4 operations · 1 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted
 Signup
Signup

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub
GitHub

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 Authentication
Authentication

Operate 3

Status, limits, changes, and where to get help

RateLimits
RateLimits
 StatusPage
StatusPage
 Support
Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Source (apis.yml)

apis.yml Raw ↑ 
name: Telefono
description: Telefono is a phone number intelligence and validation API platform providing real-time phone number lookup,
  validation, carrier information, line type detection, and number formatting services for developers. The platform helps
  businesses verify user phone numbers, detect fraud, improve deliverability of SMS campaigns, and enrich contact data with
  carrier and geographic information.
accessModel:
  pricing: enterprise
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Enterprise · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://www.telefono.com/logo.png
url: https://www.telefono.com
type: Index
tags:
- Carrier Lookup
- Data Enrichment
- Fraud Prevention
- Number Intelligence
- Number Verification
- Phone Lookup
- Phone Validation
- Telecommunications
created: '2024-01-15'
modified: '2026-05-19'
specificationVersion: '0.18'
apis:
- aid: telefono:telefono-batch-api
  name: Telefono Batch API
  description: Batch validation for multiple numbers
  humanURL: https://developers.telefono.com/validation
  baseURL: https://api.telefono.com/v1/validate
  tags:
  - Batch
  properties:
  - type: OpenAPI
    url: openapi/telefono-batch-api-openapi.yml
  - type: Documentation
    url: https://developers.telefono.com/validation
  - type: Authentication
    url: https://developers.telefono.com/authentication
  - type: GettingStarted
    url: https://developers.telefono.com/getting-started
  - type: Pricing
    url: https://www.telefono.com/pricing
  - type: RateLimits
    url: https://developers.telefono.com/rate-limits
  - type: Documentation
    url: https://developers.telefono.com/carrier
  - type: Pricing
    url: https://www.telefono.com/pricing/carrier
  - type: Documentation
    url: https://developers.telefono.com/format
- aid: telefono:telefono-carrier-api
  name: Telefono Carrier API
  description: Carrier lookup endpoints
  humanURL: https://developers.telefono.com/validation
  baseURL: https://api.telefono.com/v1/validate
  tags:
  - Carrier
  properties:
  - type: OpenAPI
    url: openapi/telefono-carrier-api-openapi.yml
  - type: Documentation
    url: https://developers.telefono.com/validation
  - type: Authentication
    url: https://developers.telefono.com/authentication
  - type: GettingStarted
    url: https://developers.telefono.com/getting-started
  - type: Pricing
    url: https://www.telefono.com/pricing
  - type: RateLimits
    url: https://developers.telefono.com/rate-limits
  - type: Documentation
    url: https://developers.telefono.com/carrier
  - type: Pricing
    url: https://www.telefono.com/pricing/carrier
  - type: Documentation
    url: https://developers.telefono.com/format
- aid: telefono:telefono-format-api
  name: Telefono Format API
  description: Number formatting and parsing endpoints
  humanURL: https://developers.telefono.com/validation
  baseURL: https://api.telefono.com/v1/validate
  tags:
  - Format
  properties:
  - type: OpenAPI
    url: openapi/telefono-format-api-openapi.yml
  - type: Documentation
    url: https://developers.telefono.com/validation
  - type: Authentication
    url: https://developers.telefono.com/authentication
  - type: GettingStarted
    url: https://developers.telefono.com/getting-started
  - type: Pricing
    url: https://www.telefono.com/pricing
  - type: RateLimits
    url: https://developers.telefono.com/rate-limits
  - type: Documentation
    url: https://developers.telefono.com/carrier
  - type: Pricing
    url: https://www.telefono.com/pricing/carrier
  - type: Documentation
    url: https://developers.telefono.com/format
- aid: telefono:telefono-validation-api
  name: Telefono Validation API
  description: Phone number validation endpoints
  humanURL: https://developers.telefono.com/validation
  baseURL: https://api.telefono.com/v1/validate
  tags:
  - Validation
  properties:
  - type: OpenAPI
    url: openapi/telefono-validation-api-openapi.yml
  - type: Documentation
    url: https://developers.telefono.com/validation
  - type: Authentication
    url: https://developers.telefono.com/authentication
  - type: GettingStarted
    url: https://developers.telefono.com/getting-started
  - type: Pricing
    url: https://www.telefono.com/pricing
  - type: RateLimits
    url: https://developers.telefono.com/rate-limits
  - type: Documentation
    url: https://developers.telefono.com/carrier
  - type: Pricing
    url: https://www.telefono.com/pricing/carrier
  - type: Documentation
    url: https://developers.telefono.com/format
common:
- type: AgenticAccess
  url: agentic-access/telefono-agentic-access.yml
- type: Authentication
  url: authentication/telefono-authentication.yml
- type: Authentication
  url: https://developers.telefono.com/authentication
- type: GettingStarted
  url: https://developers.telefono.com/getting-started
- type: RateLimits
  url: https://developers.telefono.com/rate-limits
- type: Signup
  url: https://www.telefono.com/signup
- type: Pricing
  url: https://www.telefono.com/pricing
- type: TermsOfService
  url: https://www.telefono.com/terms
- type: PrivacyPolicy
  url: https://www.telefono.com/privacy
- type: StatusPage
  url: https://status.telefono.com
- type: Support
  url: https://www.telefono.com/support
- type: GitHub
  url: https://github.com/telefono-api
maintainers:
- name: Telefono Team
  email: api@telefono.com