Uberduck

Uberduck is an AI voice platform whose public REST API converts text into natural-sounding speech across a catalog of voices and provider-backed models (AWS Polly, Google Cloud, Azure), lists and filters those voices, creates instant zero-shot voice clones from reference audio, and mints LiveKit tokens for real-time conversational AI voice calls. The API is HTTPS request/response with Bearer API-key authentication. It is self-serve but gated behind a paid plan - API access is a feature of the Creator plan and above. Uberduck's earlier AI music / rap-vocals API surface is no longer part of the published API; the current documented product (OpenAPI version 0.1.0) is focused on text-to-speech, voices, and conversational voice.

Uberduck publishes 4 APIs on the APIs.io network, including Conversational API, Models API, Text-to-Speech API, and 1 more. Tagged areas include AI, Text to Speech, TTS, Voice, and Voice Cloning.

Uberduck’s developer surface includes authentication, documentation, API reference, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub
37.0/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessPaidSelf serve
4 APIs
AIText to SpeechTTSVoiceVoice CloningSpeech SynthesisConversational AI

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 37.0/100 · thin
Contract Quality 15.9 / 25
Developer Ergonomics 5.2 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.1 / 13
Governance 0.0 / 12
Discoverability 7.4 / 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/uberduck: 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.

Uberduck Conversational API

Mint LiveKit tokens for real-time conversational AI voice calls.

Uberduck Models API

List available text-to-speech models by provider.

Uberduck Text-to-Speech API

Synthesize speech from text using a chosen voice and model.

Uberduck Voices API

List, filter, and clone voices.

Open Collections 1

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

Uberduck Text To Speech API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Uberduck Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Uberduck Rate Limits

6 limits

RATE LIMITS

FinOps 1

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

Uberduck Finops

FINOPS

Security Posture 2

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

Uberduck Authentication

http · 1 scheme

SECURITY

Uberduck Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Uberduck Agentic Access

5 operations · 3 acting

5 operations · 3 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: uberduck
url: https://raw.githubusercontent.com/api-evangelist/uberduck/refs/heads/main/apis.yml
name: Uberduck
kind: company
description: Uberduck is an AI voice platform whose public REST API converts text into natural-sounding speech across a catalog
  of voices and provider-backed models (AWS Polly, Google Cloud, Azure), lists and filters those voices, creates instant zero-shot
  voice clones from reference audio, and mints LiveKit tokens for real-time conversational AI voice calls. The API is HTTPS
  request/response with Bearer API-key authentication. It is self-serve but gated behind a paid plan - API access is a feature
  of the Creator plan and above. Uberduck's earlier AI music / rap-vocals API surface is no longer part of the published API;
  the current documented product (OpenAPI version 0.1.0) is focused on text-to-speech, voices, and conversational voice.
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/uberduck.png
tags:
- AI
- Text to Speech
- TTS
- Voice
- Voice Cloning
- Speech Synthesis
- Conversational AI
created: '2026-07-11'
modified: '2026-07-11'
specificationVersion: '0.19'
apis:
- aid: uberduck:uberduck-conversational-api
  name: Uberduck Conversational API
  description: Mint LiveKit tokens for real-time conversational AI voice calls.
  humanURL: https://docs.uberduck.ai/api-reference/text-to-speech-v-1-text-to-speech-post
  baseURL: https://api.uberduck.ai/v1
  tags:
  - Conversational
  properties:
  - type: OpenAPI
    url: openapi/uberduck-conversational-api-openapi.yml
  - type: Documentation
    url: https://docs.uberduck.ai/guides/text-to-speech
  - type: APIReference
    url: https://docs.uberduck.ai/api-reference/text-to-speech-v-1-text-to-speech-post
  - type: PostmanCollection
    url: collections/uberduck.postman_collection.json
  - type: OpenCollection
    url: collections/uberduck.opencollection.json
  - type: Documentation
    url: https://docs.uberduck.ai/guides/voice-selection
  - type: APIReference
    url: https://docs.uberduck.ai/api-reference/endpoints/models
  - type: APIReference
    url: https://docs.uberduck.ai/api-reference/uberduck-text-to-speech-api
- aid: uberduck:uberduck-models-api
  name: Uberduck Models API
  description: List available text-to-speech models by provider.
  humanURL: https://docs.uberduck.ai/api-reference/text-to-speech-v-1-text-to-speech-post
  baseURL: https://api.uberduck.ai/v1
  tags:
  - Models
  properties:
  - type: OpenAPI
    url: openapi/uberduck-models-api-openapi.yml
  - type: Documentation
    url: https://docs.uberduck.ai/guides/text-to-speech
  - type: APIReference
    url: https://docs.uberduck.ai/api-reference/text-to-speech-v-1-text-to-speech-post
  - type: PostmanCollection
    url: collections/uberduck.postman_collection.json
  - type: OpenCollection
    url: collections/uberduck.opencollection.json
  - type: Documentation
    url: https://docs.uberduck.ai/guides/voice-selection
  - type: APIReference
    url: https://docs.uberduck.ai/api-reference/endpoints/models
  - type: APIReference
    url: https://docs.uberduck.ai/api-reference/uberduck-text-to-speech-api
- aid: uberduck:uberduck-text-to-speech-api
  name: Uberduck Text-to-Speech API
  description: Synthesize speech from text using a chosen voice and model.
  humanURL: https://docs.uberduck.ai/api-reference/text-to-speech-v-1-text-to-speech-post
  baseURL: https://api.uberduck.ai/v1
  tags:
  - Text-to-Speech
  properties:
  - type: OpenAPI
    url: openapi/uberduck-text-to-speech-api-openapi.yml
  - type: Documentation
    url: https://docs.uberduck.ai/guides/text-to-speech
  - type: APIReference
    url: https://docs.uberduck.ai/api-reference/text-to-speech-v-1-text-to-speech-post
  - type: PostmanCollection
    url: collections/uberduck.postman_collection.json
  - type: OpenCollection
    url: collections/uberduck.opencollection.json
  - type: Documentation
    url: https://docs.uberduck.ai/guides/voice-selection
  - type: APIReference
    url: https://docs.uberduck.ai/api-reference/endpoints/models
  - type: APIReference
    url: https://docs.uberduck.ai/api-reference/uberduck-text-to-speech-api
- aid: uberduck:uberduck-voices-api
  name: Uberduck Voices API
  description: List, filter, and clone voices.
  humanURL: https://docs.uberduck.ai/api-reference/text-to-speech-v-1-text-to-speech-post
  baseURL: https://api.uberduck.ai/v1
  tags:
  - Voices
  properties:
  - type: OpenAPI
    url: openapi/uberduck-voices-api-openapi.yml
  - type: Documentation
    url: https://docs.uberduck.ai/guides/text-to-speech
  - type: APIReference
    url: https://docs.uberduck.ai/api-reference/text-to-speech-v-1-text-to-speech-post
  - type: PostmanCollection
    url: collections/uberduck.postman_collection.json
  - type: OpenCollection
    url: collections/uberduck.opencollection.json
  - type: Documentation
    url: https://docs.uberduck.ai/guides/voice-selection
  - type: APIReference
    url: https://docs.uberduck.ai/api-reference/endpoints/models
  - type: APIReference
    url: https://docs.uberduck.ai/api-reference/uberduck-text-to-speech-api
common:
- type: AgenticAccess
  url: agentic-access/uberduck-agentic-access.yml
- type: DomainSecurity
  url: security/uberduck-domain-security.yml
- type: Authentication
  url: authentication/uberduck-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/uberduck-ai
- type: Website
  url: https://uberduck.ai
- type: Documentation
  url: https://docs.uberduck.ai
- type: APIReference
  url: https://api.uberduck.ai/docs
- type: Plans
  url: plans/uberduck-plans-pricing.yml
- type: RateLimits
  url: rate-limits/uberduck-rate-limits.yml
- type: FinOps
  url: finops/uberduck-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com