Hedra website screenshot

Hedra

Hedra is a generative-media AI lab and creative platform that lets you produce image, video, and audio content through a web studio and a developer API. Its proprietary Character-3 model powers expressive talking-head and character video, and the platform brokers access to leading partner models (Veo, Kling, Grok, Nano Banana Pro, Flux, Sana) behind one credit-based account. The Hedra Web API exposes a small, uniform surface — list models and voices, upload assets, submit generations (image, video, avatar, text-to-speech, voice clone, upscale, video-to-video), poll generation status, and check billing credits — authenticated with an X-API-Key header. Hedra ships first-party Python, Node/TypeScript, and Rust CLI clients. Backed by a16z.

Hedra publishes 1 API on the APIs.io network: Public API. Tagged areas include Company, Artificial Intelligence, Generative AI, Video Generation, and Image Generation.

The Hedra catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Hedra’s developer surface includes documentation, API reference, getting-started guide, pricing, signup flow, support, engineering blog, and 25 more developer resources.

🌐 Visit website 📡 Source on GitHub
51.2/100 developing ▬ flat Agent 44/100 agent ready Full breakdown ↓
scored 2026-08-10 · rubric v0.9.1
AccessSelf serve
1 APIs 1 MCP Servers
CompanyArtificial IntelligenceGenerative AIVideo GenerationImage GenerationAudio GenerationText to SpeechAvatarsMediaMachine Learning

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-10 · rubric v0.9.1
Composite quality — 51.2/100 · developing
Contract Quality 15.7 / 25
Developer Ergonomics 13.8 / 20
Commercial Clarity 8.9 / 20
Operational Transparency 3.8 / 13
Governance 1.4 / 12
Discoverability 7.6 / 10
Agent readiness — 44/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 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/hedra: 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 1

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

Hedra Public API

Public endpoints are available to API users.

Arazzo Workflows 5

Multi-step API workflows described with the Arazzo specification.

_Index

ARAZZO

Hedra — Generate text-to-speech audio

Pick a voice, submit a text-to-speech generation, and poll for the audio.

ARAZZO

Hedra — Generate an avatar (talking-head) video

Upload an image and an audio track, submit an avatar video generation, and poll for the result.

ARAZZO

Hedra — Generate an image from a text prompt

Submit an image generation and poll until the image is ready.

ARAZZO

Hedra — Generate a video from a start image

Upload a start keyframe image, submit a video generation, and poll for the result.

ARAZZO

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

hedra-mcp.yml

MCP SERVER

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Hedra Webhooks

ASYNCAPI

Security Posture 2

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

Hedra Authentication

apiKey · 1 scheme

SECURITY

Hedra Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Hedra Agentic Access

9 operations · 3 acting

9 operations · 3 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Login
Login

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 MCPServer
MCPServer
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill

Design & Contract 10

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 ErrorCatalog
ErrorCatalog
 Conventions
Conventions
 DataModel
DataModel
 Lifecycle
Lifecycle
 Webhooks
Webhooks
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo

Scroll for all 10

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs
 CLI
CLI

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 1

The organization behind the API

Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: hedra
name: Hedra
description: Hedra is a generative-media AI lab and creative platform that lets you produce image, video, and audio content
  through a web studio and a developer API. Its proprietary Character-3 model powers expressive talking-head and character
  video, and the platform brokers access to leading partner models (Veo, Kling, Grok, Nano Banana Pro, Flux, Sana) behind
  one credit-based account. The Hedra Web API exposes a small, uniform surface — list models and voices, upload assets, submit
  generations (image, video, avatar, text-to-speech, voice clone, upscale, video-to-video), poll generation status, and check
  billing credits — authenticated with an X-API-Key header. Hedra ships first-party Python, Node/TypeScript, and Rust CLI
  clients. Backed by a16z.
url: https://raw.githubusercontent.com/api-evangelist/hedra/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: enriched
x-tier-reason: has-public-api
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
image: https://www.hedra.com/assets/logo/light.svg
tags:
- Company
- Artificial Intelligence
- Generative AI
- Video Generation
- Image Generation
- Audio Generation
- Text to Speech
- Avatars
- Media
- Machine Learning
apis:
- aid: hedra:hedra-public-api
  name: Hedra Public API
  description: Public endpoints are available to API users.
  humanURL: https://www.hedra.com/docs
  baseURL: https://api.hedra.com/web-app
  tags:
  - Public
  properties:
  - type: OpenAPI
    url: openapi/hedra-public-api-openapi.yml
  - type: Documentation
    url: https://www.hedra.com/docs
  - type: APIReference
    url: https://www.hedra.com/docs
  - type: Quickstart
    url: https://www.hedra.com/docs/pages/developer/getting_started/quickstart
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DeveloperPortal
  url: https://www.hedra.com/docs
- type: Documentation
  url: https://www.hedra.com/docs
- type: APIReference
  url: https://www.hedra.com/docs
- type: GettingStarted
  url: https://www.hedra.com/docs/pages/developer/getting_started/quickstart
- type: Pricing
  url: https://www.hedra.com/pricing
- type: SignUp
  url: https://www.hedra.com/auth/start?flow=signup
- type: Login
  url: https://www.hedra.com/auth/start?flow=login
- type: TermsOfService
  url: https://www.hedra.com/terms
- type: PrivacyPolicy
  url: https://www.hedra.com/privacy
- type: Support
  url: https://www.hedra.com/support
- type: Blog
  url: https://www.hedra.com/blog
- type: GitHubOrganization
  url: https://github.com/hedra-labs
- type: StatusPage
  url: https://status.hedra.com/
- type: AgenticAccess
  url: agentic-access/hedra-agentic-access.yml
- type: Authentication
  url: authentication/hedra-authentication.yml
- type: Packages
  url: packages/hedra-packages.yml
- type: SDKs
  url: packages/hedra-packages.yml
- type: CLI
  url: cli/hedra-cli.yml
- type: MCPServer
  url: mcp/hedra-mcp.yml
- type: LLMsTxt
  url: llms/hedra-llms.txt
- type: Conformance
  url: conformance/hedra-conformance.yml
- type: ErrorCatalog
  url: errors/hedra-error-codes.yml
- type: Conventions
  url: conventions/hedra-conventions.yml
- type: DataModel
  url: data-model/hedra-data-model.yml
- type: Lifecycle
  url: lifecycle/hedra-lifecycle.yml
- type: DomainSecurity
  url: security/hedra-domain-security.yml
- type: Webhooks
  url: asyncapi/hedra-webhooks.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Arazzo
  name: Generate an image
  url: arazzo/hedra-generate-image.yml
- type: Arazzo
  name: Generate a video from an image
  url: arazzo/hedra-generate-video.yml
- type: Arazzo
  name: Generate an avatar video
  url: arazzo/hedra-generate-avatar-video.yml
- type: Arazzo
  name: Generate text-to-speech audio
  url: arazzo/hedra-generate-audio.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence