# Telesign

**Canonical:** https://apis.io/providers/telesign/  
**Website:** https://www.telesign.com/  
**APIs profiled:** 5

Telesign provides a comprehensive suite of communications and security APIs enabling businesses to verify phone numbers, send SMS and voice messages, and assess fraud risk. Core offerings include SMS messaging, voice calls, multi-channel verification (OTP/MFA), phone number intelligence (PhoneID), reputation scoring, and silent verification. Telesign serves thousands of enterprises globally for account security, fraud prevention, and customer communications.

## Kin Score — 40.5 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 40.5).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 61.4 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 23.7 |
| Developer Ergonomics | 17.9 |
| Commercial Clarity | 44.7 |
| Access Clarity | 44.7 |

Regulatory layer — **Telecommunications**: 36.1 (matched via tags).

## Agent readiness — 29.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| 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 · Self-serve signup — onboarding: self-serve, pricing: free, trial: yes (confidence: high).

## APIs (5)

- **Telesign Voice API** — Send voice messages including OTPs, alerts, and notifications to phone numbers worldwide. Supports text-to-speech message delivery and call status tracking.
- **Telesign Fraud Scoring API** — Phone number reputation and fraud risk scoring
- **Telesign Messaging API** — Send and track SMS messages
- **Telesign Phone Intelligence API** — Phone number lookup and intelligence operations
- **Telesign Verification API** — Create, retrieve, and update verification processes

## Agentic access (1)

- **Telesign Agentic Access** — 7 operations · 5 acting

## Security (3)

- **Telesign Authentication** — http · 1 scheme
- **Telesign Domain Security** — TLSv1.3 · HSTS · DMARC
- **Telesign Trust Center** — SOC 2, ISO 27001, HIPAA, GDPR

## Plans (1)

- **Telesign Plans Pricing**

## Tags

Authentication, Communications, Fraud Prevention, Phone Intelligence, SMS, Verification

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