# Listnr

**Canonical:** https://apis.io/providers/listnr/  
**Website:** https://listnr.ai  
**APIs profiled:** 3

Listnr AI is a text-to-speech and AI voice platform offering 1,000+ ultra-realistic voices across 142+ languages and accents, used for voiceovers, podcasts, and text-to-video. Beyond the web app, Listnr exposes a documented public Text-to-Speech API (base https://bff.listnr.tech/api/tts/v1) that converts SSML text or article URLs into MP3/WAV audio synchronously or asynchronously, lists available voices, and reports async job status. API keys are generated from the Listnr dashboard at voices.listnr.tech and passed via an x-listnr-token header.

## Kin Score — 39.5 / 100 (developing)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 39.5).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 56.5 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 34.2 |
| Developer Ergonomics | 21.4 |
| Commercial Clarity | 46.1 |
| Access Clarity | 46.1 |

## Agent readiness — 19.8 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| 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 |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (3)

- **Listnr Jobs API** — Poll the status of asynchronous conversion jobs.
- **Listnr Text-to-Speech API** — Convert SSML text or an article URL into audio.
- **Listnr Voices API** — List the AI voices available on Listnr.

## Agentic access (1)

- **Listnr Agentic Access** — 6 operations · 4 acting

## Security (2)

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

## Plans (1)

- **Listnr Plans Pricing**

## Tags

Artificial Intelligence, Text-to-Speech, TTS, Voice, Speech Synthesis, Audio, Voiceover

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