Transistor MCP Server

This MCP server provides tools to interact with the Transistor.fm API, allowing you to manage podcasts, episodes, and view analytics.

Configuration

Add the server to your MCP settings configuration file with your Transistor API key:

{
  "mcpServers": {
    "transistor": {
      "command": "node",
      "args": ["path/to/Transistor-MCP/build/index.js"],
      "env": {
        "TRANSISTOR_API_KEY": "your-api-key-here"
      }
    }
  }
}

Available Tools

get_authenticated_user

Get details of the authenticated user account.

{
  // No parameters needed
}

authorize_upload

Get a pre-signed URL for uploading an audio file. Use this before creating an episode with a local audio file.

{
  "filename": string  // Required: Name of the audio file to upload
}

Response includes:

upload_url: Pre-signed S3 URL for uploading the file
content_type: Content type to use when uploading (e.g., "audio/mpeg")
expires_in: Time in seconds until the upload URL expires
audio_url: Final URL to use when creating the episode

list_shows

List all shows in your Transistor.fm account, ordered by updated date (newest first). Returns a paginated list with 10 items per page.

{
  "page": number,     // Optional, defaults to 0 (first page)
  "per": number,      // Optional, defaults to 10 items per page
  "private": boolean, // Optional: filter for private shows
  "query": string     // Optional: search query
}

Note: All parameters are optional. Calling this endpoint without parameters will return the first page of shows.

list_episodes

List episodes for a specific show.

{
  "show_id": string,  // Required
  "page": number,     // Optional, defaults to 0
  "per": number,      // Optional, defaults to 10
  "query": string,    // Optional: search query
  "status": string,   // Optional: "published", "draft", or "scheduled"
  "order": string     // Optional: "desc" (newest first) or "asc" (oldest first), defaults to "desc"
}

get_episode

Get detailed information about a specific episode.

{
  "episode_id": string,           // Required
  "include": string[],           // Optional: array of related resources to include
  "fields": {                    // Optional: sparse fieldsets
    "episode": string[],         // Fields to include for episode
    "show": string[]            // Fields to include for show
  }
}

get_analytics

Get analytics for a show or specific episode. Defaults to the last 14 days if no dates are provided.

{
  "show_id": string,            // Required
  "episode_id": string,         // Optional: include for episode-specific analytics
  "start_date": string,         // Optional: format "dd-mm-yyyy", required if end_date is provided
  "end_date": string           // Optional: format "dd-mm-yyyy", required if start_date is provided
}

create_episode

Create a new episode.

{
  "show_id": string,               // Required
  "title": string,                 // Required
  "audio_url": string,             // Required
  "summary": string,               // Optional
  "description": string,           // Optional: may contain HTML
  "transcript_text": string,       // Optional: full episode transcript
  "author": string,               // Optional
  "explicit": boolean,            // Optional
  "image_url": string,            // Optional: episode artwork
  "keywords": string,             // Optional: comma-separated list
  "number": number,               // Optional: episode number
  "season_number": number,        // Optional
  "type": string,                // Optional: "full", "trailer", or "bonus"
  "alternate_url": string,       // Optional: override share_url
  "video_url": string,           // Optional: YouTube URL
  "email_notifications": boolean, // Optional: override show setting
  "increment_number": boolean     // Optional: auto-set next episode number
}

update_episode

Update an existing episode.

{
  "episode_id": string,           // Required
  "title": string,               // Optional
  "summary": string,             // Optional
  "description": string,         // Optional: may contain HTML
  "transcript_text": string,     // Optional: full episode transcript
  "author": string,             // Optional
  "explicit": boolean,          // Optional
  "image_url": string,          // Optional: episode artwork
  "keywords": string,           // Optional: comma-separated list
  "number": number,             // Optional: episode number
  "season_number": number,      // Optional
  "type": string,              // Optional: "full", "trailer", or "bonus"
  "alternate_url": string,     // Optional: override share_url
  "video_url": string,         // Optional: YouTube URL
  "email_notifications": boolean // Optional: override show setting
}

get_all_episode_analytics

Get analytics for all episodes of a show. Defaults to the last 7 days if no dates are provided.

{
  "show_id": string,            // Required
  "start_date": string,         // Optional: format "dd-mm-yyyy", required if end_date is provided
  "end_date": string           // Optional: format "dd-mm-yyyy", required if start_date is provided
}

list_webhooks

List all webhooks for a show.

{
  "show_id": string            // Required
}

Subscribe to a webhook for a show.

{
  "event_name": string,        // Required: e.g., "episode_created"
  "show_id": string,          // Required
  "url": string              // Required: URL to receive webhook events
}

unsubscribe_webhook

Unsubscribe from a webhook.

{
  "webhook_id": string        // Required
}

Important Notes

API requests are rate-limited to 10 requests per 10 seconds
Dates must be in "dd-mm-yyyy" format
Page numbers start at 0
All endpoints support:
- Sparse fieldsets: Specify which fields to return using fields[resource_type][]
- Including related resources: Use include[] to fetch related resources in a single request
Include arrays use the format ["resource_name"]
Fields objects specify which fields to return for each resource type
All tools return data in JSONAPI format with proper relationships and metadata

Example Usage

List shows:

// List first page of shows (default behavior)
const result = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "list_shows",
  arguments: {}
});

// List shows with pagination and filtering
const resultWithParams = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "list_shows",
  arguments: {
    page: 1,
    per: 20,
    private: true,
    query: "podcast"
  }
});

Get episode details:

const result = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "get_episode",
  arguments: {
    episode_id: "123456",
    include: ["show"],
    fields: {
      episode: ["title", "summary", "description"],
      show: ["title"]
    }
  }
});

Get show analytics:

// Get analytics for the last 14 days (default behavior)
const result = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "get_analytics",
  arguments: {
    show_id: "123456"
  }
});

// Get analytics for a specific date range
const resultWithDates = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "get_analytics",
  arguments: {
    show_id: "123456",
    start_date: "01-01-2024",
    end_date: "31-01-2024"
  }
});

// Get analytics for a specific episode
const episodeAnalytics = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "get_analytics",
  arguments: {
    show_id: "123456",
    episode_id: "789012",
    start_date: "01-01-2024",
    end_date: "31-01-2024"
  }
});

Update episode:

const result = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "update_episode",
  arguments: {
    episode_id: "123456",
    title: "Updated Episode Title",
    summary: "New episode summary",
    description: "New detailed description",
    season_number: 2,
    episode_number: 5
  }
});

Get all episode analytics:

// Get analytics for all episodes for the last 7 days (default behavior)
const result = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "get_all_episode_analytics",
  arguments: {
    show_id: "123456"
  }
});

// Get analytics for all episodes for a specific date range
const resultWithDates = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "get_all_episode_analytics",
  arguments: {
    show_id: "123456",
    start_date: "01-01-2024",
    end_date: "31-01-2024"
  }
});

Manage webhooks:

// List webhooks
const webhooks = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "list_webhooks",
  arguments: {
    show_id: "123456"
  }
});

// Subscribe to webhook
const subscription = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "subscribe_webhook",
  arguments: {
    event_name: "episode_created",
    show_id: "123456",
    url: "https://your-webhook-endpoint.com/hook"
  }
});

// Unsubscribe from webhook
const unsubscribe = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "unsubscribe_webhook",
  arguments: {
    webhook_id: "webhook123"
  }
});

Development Notes

The server has been thoroughly tested with the following improvements:

Fixed pagination format to use pagination[page] instead of page for proper JSONAPI compliance
Corrected analytics endpoint URL from /v1/analytics/shows/{id} to /v1/analytics/{id}
Verified proper handling of sparse fieldsets and included resources
Confirmed working analytics for both shows and individual episodes

Not Yet Implemented

The following Transistor API features are not yet implemented:

Private Episodes functionality (subscribers management)
- GET /v1/subscribers
- GET /v1/subscribers/:id
- POST /v1/subscribers
- POST /v1/subscribers/batch
- PATCH /v1/subscribers/:id
- DELETE /v1/subscribers
- DELETE /v1/subscribers/:id

Example Usage (continued)

Get authenticated user:

const result = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "get_authenticated_user",
  arguments: {}
});

Authorize audio file upload:

// First, get a pre-signed upload URL
const auth = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "authorize_upload",
  arguments: {
    filename: "my-episode.mp3"
  }
});

// Then use the returned upload_url to upload your file via PUT request
// Finally, use the returned audio_url when creating your episode:
const episode = await use_mcp_tool({
  server_name: "transistor",
  tool_name: "create_episode",
  arguments: {
    show_id: "123456",
    title: "My New Episode",
    audio_url: auth.data.attributes.audio_url
  }
});