Castmagic API

Name: Castmagic API API
Brand: Castmagic API
Availability: InStock

★ Only Publicly Available OpenAPI DocumentMediaAudio Processingbearer5 EndpointsREST

For Agents

Submit audio or video files to Castmagic for transcription and content generation, list workspaces, and manage webhook subscriptions for processing events.

Quickstart

Get started with Castmagic API in minutes using your preferred integration method.

# Add to your MCP client config (Claude Desktop, Cursor, Windsurf)
{
  "jentic": {
    "url": "https://api.jentic.com/mcp",
    "auth": "oauth"
  }
}

# Then ask your agent:
"submit an audio file to Castmagic"

# → Jentic returns the GET /events tool with parameter schema, agent executes.

Capabilities

What an agent can do with Castmagic API API.

Validate that a Castmagic API key is active before triggering downstream calls

List the Spaces available on a Castmagic account for routing new media

Create a Castmagic media object from an audio or video URL to start processing

Subscribe a webhook URL to receive notifications when Castmagic processing completes

GET STARTED

Start building with Castmagic API API

Explore with Jentic

View OpenAPI Document

Jentic publishes the only available OpenAPI document for Castmagic API, keeping it validated and agent-ready.

Jentic publishes the only available OpenAPI specification for Castmagic API, keeping it validated and agent-ready. Castmagic is a content processing platform that ingests audio and video files and produces transcripts, show notes, social posts, and other derived assets organised into workspaces called Spaces. The Zapier-style API surface lets you list available Spaces, create a new media object from a source URL, subscribe and unsubscribe webhooks for processing events, and validate that an API key is active. It is intended for piping podcast and video content into Castmagic from external recording, scheduling, or storage tools.

Use Cases

Patterns agents use Castmagic API API for, with concrete tasks.

★ Automated podcast post-production

Once a podcast episode is recorded and uploaded to cloud storage, an automation can POST the file URL to Castmagic /objects to start transcription, show note generation, and clip suggestions. The webhook subscription lets the automation know when the assets are ready to be pulled into a publishing tool.

POST to /objects with the audio file URL and the target space_id, then POST /hooks/subscribe with the callback URL that should receive the completion event.

Video content repurposing pipeline

A creator uploading a long-form video can have it forwarded to Castmagic as a media object so Castmagic produces transcript, summary, and social caption assets. The same /objects call can route output into a per-client Space, which keeps assets separated for agency workflows.

POST /objects with the video URL and the client-specific space_id obtained from GET /spaces.

Webhook-driven content publishing

Editorial systems can register a webhook with POST /hooks/subscribe so Castmagic notifies them as soon as transcripts and derivative assets are ready, rather than polling. When a project ends, DELETE /hooks/unsubscribe removes the subscription cleanly.

POST /hooks/subscribe with target_url=https://example.com/castmagic-callback and event='object.completed'.

AI agent media workflow via Jentic

An AI content agent can collect new audio recordings, push them to Castmagic, and pull back the structured assets without the developer hand-coding the Zapier-style endpoint contract. Jentic stores the bearer API key in the vault and injects it at execution time.

Search Jentic for 'submit an audio file to Castmagic', load POST /objects, and execute it with the user's audio URL and chosen Space.

Key Endpoints

5 endpoints — jentic publishes the only available openapi specification for castmagic api, keeping it validated and agent-ready.

METHOD

PATH

DESCRIPTION

GET

/validate

Validate the supplied API key

GET

/spaces

List available Spaces on the account

POST

/objects

Create a media object from an audio or video URL

POST

/hooks/subscribe

Subscribe a webhook to processing events

DELETE

/hooks/unsubscribe

Remove a webhook subscription

GET

/validate

Validate the supplied API key

GET

/spaces

List available Spaces on the account

POST

/objects

Create a media object from an audio or video URL

POST

/hooks/subscribe

Subscribe a webhook to processing events

DELETE

/hooks/unsubscribe

Remove a webhook subscription

Why though Jentic?

Three things that make agents converge on Jentic-routed access.

Credential isolation

Castmagic bearer API keys are stored encrypted in the Jentic vault (MAXsystem). Agents receive scoped access at execution time and the raw token never enters prompts, logs, or response payloads.

Intent-based discovery

Agents search by intent (e.g., 'submit an audio file to Castmagic') and Jentic returns the matching POST /objects operation along with its input schema, so the agent does not need to learn the Zapier endpoint contract.

Time to first call

Direct Castmagic integration including webhook lifecycle handling: about half a day. Through Jentic: under 30 minutes — search, load, execute.

Related APIs

Alternatives and complements available in the Jentic catalogue.

Alternative

AssemblyAI API

AssemblyAI focuses on raw transcription and audio intelligence rather than full content repurposing.

Choose AssemblyAI when you need transcripts and structured insights to feed your own pipeline; choose Castmagic when you want ready-to-publish derivative assets.

Alternative

Deepgram API

Deepgram is a streaming-first transcription provider competing on latency and accuracy.

Use Deepgram when you control the downstream content workflow yourself; use Castmagic for pre-built podcast and video repurposing.

Alternative

Rev AI API

Rev AI is a transcription-only competitor without Castmagic's content generation steps.

Pick Rev AI for plain transcription with optional human review; pick Castmagic for an opinionated content packaging output.

FAQs

Specific to using Castmagic API API through Jentic.

Why is there no official OpenAPI spec for Castmagic API?

Castmagic publishes a Zapier-targeted API but no machine-readable OpenAPI specification. Jentic generates and maintains this spec so that AI agents and developers can call Castmagic API via structured tooling. It is validated against the live API and kept up to date. Get started at https://app.jentic.com/sign-up.

What authentication does the Castmagic API use?

The Castmagic API uses HTTP bearer token authentication. You generate the API key in the Castmagic dashboard and pass it as Authorization: Bearer in every request. Through Jentic the key is held encrypted in the MAXsystem vault and never exposed to the agent.

How do I submit an audio file to Castmagic for processing?

POST a JSON body to /objects containing the source audio or video URL and the target space_id. Castmagic ingests the file asynchronously, and you can register a webhook with POST /hooks/subscribe to be notified when transcription and derivative assets are ready.

What are the rate limits for the Castmagic API?

Castmagic does not document explicit numeric rate limits in this OpenAPI spec; the Zapier-style endpoints are designed for moderate trigger volume. Avoid tight polling against /spaces or /validate, and prefer webhook subscriptions over polling for completion events.

How do I create a Castmagic media object through Jentic?

Run pip install jentic, search Jentic with the query 'submit an audio file to Castmagic', load the POST /objects schema, and execute it with the file URL and a space_id obtained from GET /spaces. Jentic handles the bearer key automatically.

Can I retrieve the generated transcript directly from this API?

No. The current spec covers media submission and webhook management but not transcript retrieval, which happens through the Castmagic web UI or via the webhook payload that fires when processing completes. Use POST /hooks/subscribe to receive the asset URLs.