# Podcastle

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

Podcastle is an AI audio and podcast creation platform whose developer engine, Async, exposes a low-latency Voice API for human-like text-to-speech, a browsable voice library, and instant voice cloning from a short audio sample. The API is served from https://api.async.com and authenticated with an x-api-key header plus a version header. Transcription is a Podcastle platform feature; no standalone transcription endpoint is documented in the public Voice API.

## Kin Score — 39.0 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 39.0).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 59.4 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 31.6 |
| Developer Ergonomics | 23.8 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

## 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

Freemium (free trial) · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: yes (confidence: high).

## APIs (3)

- **Podcastle Transcription** — Transcription and speech-to-text are Podcastle platform features (multi-language transcription with speaker identification) available in the product, console, and credit-based p...
- **Podcastle Text to Speech API** — Synthesize speech from text in batch, streaming, or with word timestamps.
- **Podcastle Voices API** — Browse the voice library and create instant voice clones.

## Agentic access (1)

- **Podcastle Agentic Access** — 5 operations · 5 acting

## Security (2)

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

## Plans (1)

- **Podcastle Plans Pricing**

## Tags

Artificial Intelligence, Audio, Text-to-Speech, Voice Cloning, Podcasting

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