# Captions

**Canonical:** https://apis.io/providers/captions/  
**Website:** https://captions.ai  
**APIs profiled:** 7

Captions is an AI video editor and generator built by Mirage, an AI research company headquartered in New York City. The consumer and enterprise apps automate the most time-consuming parts of video production — cutting scenes, adding B-roll, inserting music and sound effects, generating and styling captions, dubbing into 30+ languages, correcting eye contact, and generating entirely new videos from a text prompt or a selfie via AI Avatars, AI Actors, and AI Twins. The Mirage Video API (api.mirage.app) exposes this pipeline to developers: asynchronous AI video generation, adding stylized captions to videos, caption-template discovery, text-to-speech audio, and meta text overlays. Authentication is a simple x-api-key header, keys are minted in the Mirage platform dashboard, and long-running jobs are polled for status.

## Kin Score — 70.8 / 100 (exemplar)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 70.8).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 53.5 |
| Governance | 89.6 |
| Operational Transparency | 68.4 |
| Developer Ergonomics | 56.0 |
| Commercial Clarity | 92.1 |

## Agent readiness — 41.7 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| MCP Server | derived |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

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

## APIs (7)

- **Captions Audio API** — The Audio API from Captions — 1 operation(s) for audio.
- **Captions health API** — The health API from Captions — 1 operation(s) for health.
- **Captions internal API** — The internal API from Captions — 8 operation(s) for internal.
- **Captions Meta Text Overlays API** — The Meta Text Overlays API from Captions — 2 operation(s) for meta text overlays.
- **Captions root API** — The root API from Captions — 1 operation(s) for root.
- **Captions Video Captions API** — The Video Captions API from Captions — 3 operation(s) for video captions.
- **Captions Videos API** — The Videos API from Captions — 3 operation(s) for videos.

## MCP servers (1)

- **captions-mcp.yml**

## Agentic access (1)

- **Captions Agentic Access** — 23 operations · 11 acting · 5 human-in-the-loop

## Security (2)

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

## Plans (2)

- **Captions Plans Pricing**
- **Captions Plans**

## Tags

Company, Video, Artificial Intelligence, Video Editing, Video Generation, Captions, Subtitles, Text to Speech, AI Avatars, Content Creation, Media

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