MediaCaption API

A credit-billed REST API for retrieving public YouTube transcripts, with single and bulk transcript jobs, job-level webhooks, and AI transcription/translation capabilities. Backed by a public OpenAPI 3.1 contract with bearer/X-API-Key authentication.

MediaCaption API publishes 1 API on the APIs.io network: Media Caption Public API. Tagged areas include YouTube, Transcription, Captions, Subtitles, and Video.

🌐 Visit website 📡 Source on GitHub

13.0/100 emerging ▬ flat Agent 15/100 agent aware Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

1 APIs

YouTubeTranscriptionCaptionsSubtitlesVideoRESTOpenAPIWebhookSpeech-to-TextMediaDeveloper Tools

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 13.0/100 · emerging

Contract Quality 7.1 / 25

Developer Ergonomics 0.0 / 20

Access Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 5.9 / 10

Agent readiness — 15/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 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

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APIs 1

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

Media Caption Public API

REST API for fetching public YouTube transcripts synchronously and in bulk, with account/balance endpoints, job polling, and completion webhooks. Bearer API key or X-API-Key auth.

Source (apis.yml)

name: MediaCaption API
description: A credit-billed REST API for retrieving public YouTube transcripts, with single and bulk transcript jobs, job-level
  webhooks, and AI transcription/translation capabilities. Backed by a public OpenAPI 3.1 contract with bearer/X-API-Key authentication.
url: https://raw.githubusercontent.com/api-evangelist/mediacaption-api/refs/heads/main/apis.yml
created: '2026-07-18'
modified: '2026-07-18'
specificationVersion: '0.23'
tags:
- YouTube
- Transcription
- Captions
- Subtitles
- Video
- REST
- OpenAPI
- Webhook
- Speech-to-Text
- Media
- Developer Tools
tags_raw:
- youtube
- transcription
- captions
- subtitles
- video
- rest
- openapi
- webhooks
- speech-to-text
- media
- developer-tools
apis:
- name: Media Caption Public API
  description: REST API for fetching public YouTube transcripts synchronously and in bulk, with account/balance endpoints,
    job polling, and completion webhooks. Bearer API key or X-API-Key auth.
  humanURL: https://www.mediacaption.io/api
  baseURL: https://api.mediacaption.io/v1
  tags:
  - YouTube
  - Transcription
  - Captions
  - Subtitles
  - Video
  - REST
  - OpenAPI
  - Webhook
  - Speech-to-Text
  - Media
  - Developer Tools
  tags_raw:
  - youtube
  - transcription
  - captions
  - subtitles
  - video
  - rest
  - openapi
  - webhooks
  - speech-to-text
  - media
  - developer-tools
  properties:
  - type: OpenAPI
    url: https://www.mediacaption.io/docs/openapi/mediacaption.v1.yaml
  - type: Documentation
    url: https://www.mediacaption.io/docs
  - type: Documentation
    url: https://www.mediacaption.io/docs/quickstart
maintainers:
- FN: MediaCaption API
  url: https://www.mediacaption.io
generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 95
  at: '2026-07-18T18:19:45.114Z'