Transistor

Transistor is a podcast hosting and analytics platform that lets teams host unlimited shows, distribute episodes to Apple Podcasts, Spotify, and YouTube, run private (subscriber-only) podcasts, and measure downloads with advanced analytics. Transistor exposes a documented public REST API at https://api.transistor.fm/v1 that follows the JSON:API specification, is authenticated with an x-api-key header, and covers shows, episodes, analytics, private podcast subscribers, and event webhooks.

Transistor publishes 6 API contracts indexed on the APIs.io network, including Account API, Analytics API, Episodes API, and 3 more. Tagged areas include Podcasts, Podcast Hosting, Analytics, Media, and Audio.

The Transistor catalog on APIs.io includes 1 Spectral governance ruleset.

Transistor’s developer surface includes engineering blog, pricing, authentication, documentation, and 11 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

39.8/100 developing ▬ flat Agent 46/100 agent ready Front door AI 3/6 light Heartbeat 98/100 alive saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessPaid

1 published contract 1 MCP Servers

Podcasts Podcast Hosting Analytics Media Audio JSON:API

What this lets a business do 4

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Media, Creator & Social

AE-170

EpisodesShows

GET /episodes POST /episodes GET /episodes/authorize_upload PATCH /episodes/{id}

Audience Measurement & Insights Management

BC-3770

Analytics

GET /analytics/{id} GET /analytics/{id}/episodes

Developer Platform & API Ecosystem Management

BC-4270

Webhooks

POST /webhooks DELETE /webhooks/{id}

Audience & Viewer Management

BC-3750

Subscribers

POST /subscribers

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 39.8/100 · developing

Contract Quality 10.1 / 19

Developer Ergonomics 4.3 / 15

Access Clarity 6.1 / 15

Operational Transparency 2.8 / 10

Contract Governance 1.2 / 9

Discoverability 5.1 / 8

Regulatory Posture 3.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 46/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 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

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks Ask about this →
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too Ask about this →
Pagination +5 pts — share of collection GETs (an array, or one wrapped in data/items/results ...) that declare a page/limit/offset/cursor parameter, a Link header or a next/cursor field; na with no collection GETs Ask about this →

5 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Developer Ergonomics scores 28.6 — up to +14.3 composite points Ask about this →
Access Clarity scores 40.4 — up to +11.9 composite points Ask about this →
Contract Quality scores 53.8 — up to +11.6 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/transistor/apis.yml: open an issue on github.com/api-evangelist/transistor to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Podcasting 2.0 (open podcast namespace, measurement, hosting)	mixed	32.3	-	-
Raycast Store Extensions (first-party publishers + community-wrapped products)	mixed	32.3	-	-
IFTTT Services (service publishers)	mixed	32.3	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 5

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

JSON:API

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 6

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

Transistor Account API

The authenticated user account.

Transistor Analytics API

Download analytics for shows and episodes.

Transistor Episodes API

Podcast episodes, drafts, uploads, and publishing.

Transistor Shows API

Podcasts (shows) in your Transistor account.

Transistor Subscribers API

Private (subscriber-only) podcast subscribers.

Transistor Webhooks API

Event webhook subscriptions.

Open Collections 7

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Transistor Account API

OPEN COLLECTION

Transistor Account Analytics API

OPEN COLLECTION

Transistor Account Episodes API

OPEN COLLECTION

Transistor Account Shows API

OPEN COLLECTION

Transistor Account Subscribers API

OPEN COLLECTION

Transistor Account Webhooks API

OPEN COLLECTION

Transistor API

OPEN COLLECTION

Scroll for all 7

MCP Servers 1

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

Transistor MCP Server

Remote MCP server at mcp.transistor.fm over HTTP.

MCP SERVER

Transistor API pricing

Prices published by Transistor, read 2026-09-20 from transistor.fm/pricing/.

Plan	Price
Starter	$19 Includes: Unlimited podcasts, Unlimited team members, 50 Private podcast subscribers, 20K Monthly downloads, A
Professional	$49 Includes: 500 Private podcast subscribers, 100K Monthly downloads, API Access, Dynamic ads
Business	$99 Includes: 3K Private podcast subscribers, 250K Monthly downloads, API Access, Remove branding
Enterprise	$199+ Includes: More than 250,000 downloads per month or more than 3,000 private podcast subscribers — contact us

Plan details, limits and sources →

Rate limits

API request rate limit: API requests are rate-limited to 10 requests per 10 seconds
Webhooks per user account: Limited to a maximum of 50 webhooks per user account.

Rate-limit details →

Pricing Plans 2

Published pricing tiers and plan structures.

Transistor Plans Pricing

4 plans

PLANS

Transistor Price Estimates

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Transistor Rate Limits

2 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Transistor Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Transistor API Rules

68 rules · 63 error-severity 2 warn-severity 3 info-severity

SPECTRAL

Security Posture 4

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

Transistor Authentication

apiKey · 1 scheme

SECURITY

Transistor Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Transistor Vulnerability Disclosure

no policy recorded

SECURITY

Transistor Trust Center

SOC 2, ISO 27001

SECURITY

Agentic Access (API Evangelist recommendations) 1

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

Transistor Agentic Access

23 operations · 11 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 4

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 4

The organization behind the API

Blog

Blog

BlogRSS

BlogRSS

LinkedIn

Website

Website

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: transistor
url: https://raw.githubusercontent.com/api-evangelist/transistor/refs/heads/main/apis.yml
name: Transistor
kind: company
description: Transistor is a podcast hosting and analytics platform that lets teams host unlimited shows, distribute episodes
  to Apple Podcasts, Spotify, and YouTube, run private (subscriber-only) podcasts, and measure downloads with advanced analytics.
  Transistor exposes a documented public REST API at https://api.transistor.fm/v1 that follows the JSON:API specification,
  is authenticated with an x-api-key header, and covers shows, episodes, analytics, private podcast subscribers, and event
  webhooks.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/transistor.png
tags:
- Podcasts
- Podcast Hosting
- Analytics
- Media
- Audio
- JSON:API
tags_raw:
- Podcasting
- Podcast Hosting
- Analytics
- Media
- Audio
- JSON:API
created: '2026-07-05'
modified: '2026-10-06'
specificationVersion: '0.23'
apis:
- aid: transistor:transistor-account-api
  name: Transistor Account API
  description: The authenticated user account.
  humanURL: https://developers.transistor.fm/#Show
  baseURL: https://api.transistor.fm/v1
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/transistor-account-api-openapi.yml
  - type: Documentation
    url: https://developers.transistor.fm/
  - type: APIReference
    url: https://developers.transistor.fm/#Show
  - type: PostmanCollection
    url: collections/transistor.postman_collection.json
  - type: OpenCollection
    url: collections/transistor.opencollection.json
  - type: APIReference
    url: https://developers.transistor.fm/#Episode
  - type: APIReference
    url: https://developers.transistor.fm/#Analytics
  - type: APIReference
    url: https://developers.transistor.fm/#Subscriber
  - type: APIReference
    url: https://developers.transistor.fm/#Webhook
- aid: transistor:transistor-analytics-api
  name: Transistor Analytics API
  description: Download analytics for shows and episodes.
  humanURL: https://developers.transistor.fm/#Show
  baseURL: https://api.transistor.fm/v1
  tags:
  - Analytics
  properties:
  - type: OpenAPI
    url: openapi/transistor-analytics-api-openapi.yml
  - type: Documentation
    url: https://developers.transistor.fm/
  - type: APIReference
    url: https://developers.transistor.fm/#Show
  - type: PostmanCollection
    url: collections/transistor.postman_collection.json
  - type: OpenCollection
    url: collections/transistor.opencollection.json
  - type: APIReference
    url: https://developers.transistor.fm/#Episode
  - type: APIReference
    url: https://developers.transistor.fm/#Analytics
  - type: APIReference
    url: https://developers.transistor.fm/#Subscriber
  - type: APIReference
    url: https://developers.transistor.fm/#Webhook
- aid: transistor:transistor-episodes-api
  name: Transistor Episodes API
  description: Podcast episodes, drafts, uploads, and publishing.
  humanURL: https://developers.transistor.fm/#Show
  baseURL: https://api.transistor.fm/v1
  tags:
  - Episodes
  properties:
  - type: OpenAPI
    url: openapi/transistor-episodes-api-openapi.yml
  - type: Documentation
    url: https://developers.transistor.fm/
  - type: APIReference
    url: https://developers.transistor.fm/#Show
  - type: PostmanCollection
    url: collections/transistor.postman_collection.json
  - type: OpenCollection
    url: collections/transistor.opencollection.json
  - type: APIReference
    url: https://developers.transistor.fm/#Episode
  - type: APIReference
    url: https://developers.transistor.fm/#Analytics
  - type: APIReference
    url: https://developers.transistor.fm/#Subscriber
  - type: APIReference
    url: https://developers.transistor.fm/#Webhook
- aid: transistor:transistor-shows-api
  name: Transistor Shows API
  description: Podcasts (shows) in your Transistor account.
  humanURL: https://developers.transistor.fm/#Show
  baseURL: https://api.transistor.fm/v1
  tags:
  - Shows
  properties:
  - type: OpenAPI
    url: openapi/transistor-shows-api-openapi.yml
  - type: Documentation
    url: https://developers.transistor.fm/
  - type: APIReference
    url: https://developers.transistor.fm/#Show
  - type: PostmanCollection
    url: collections/transistor.postman_collection.json
  - type: OpenCollection
    url: collections/transistor.opencollection.json
  - type: APIReference
    url: https://developers.transistor.fm/#Episode
  - type: APIReference
    url: https://developers.transistor.fm/#Analytics
  - type: APIReference
    url: https://developers.transistor.fm/#Subscriber
  - type: APIReference
    url: https://developers.transistor.fm/#Webhook
- aid: transistor:transistor-subscribers-api
  name: Transistor Subscribers API
  description: Private (subscriber-only) podcast subscribers.
  humanURL: https://developers.transistor.fm/#Show
  baseURL: https://api.transistor.fm/v1
  tags:
  - Subscribers
  properties:
  - type: OpenAPI
    url: openapi/transistor-subscribers-api-openapi.yml
  - type: Documentation
    url: https://developers.transistor.fm/
  - type: APIReference
    url: https://developers.transistor.fm/#Show
  - type: PostmanCollection
    url: collections/transistor.postman_collection.json
  - type: OpenCollection
    url: collections/transistor.opencollection.json
  - type: APIReference
    url: https://developers.transistor.fm/#Episode
  - type: APIReference
    url: https://developers.transistor.fm/#Analytics
  - type: APIReference
    url: https://developers.transistor.fm/#Subscriber
  - type: APIReference
    url: https://developers.transistor.fm/#Webhook
- aid: transistor:transistor-webhooks-api
  name: Transistor Webhooks API
  description: Event webhook subscriptions.
  humanURL: https://developers.transistor.fm/#Show
  baseURL: https://api.transistor.fm/v1
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/transistor-webhooks-api-openapi.yml
  - type: Documentation
    url: https://developers.transistor.fm/
  - type: APIReference
    url: https://developers.transistor.fm/#Show
  - type: PostmanCollection
    url: collections/transistor.postman_collection.json
  - type: OpenCollection
    url: collections/transistor.opencollection.json
  - type: APIReference
    url: https://developers.transistor.fm/#Episode
  - type: APIReference
    url: https://developers.transistor.fm/#Analytics
  - type: APIReference
    url: https://developers.transistor.fm/#Subscriber
  - type: APIReference
    url: https://developers.transistor.fm/#Webhook
common:
- url: https://transistor.fm/blog/
  type: Blog
- url: https://transistor.fm/blog/feed/
  type: BlogRSS
- type: Pricing
  url: https://transistor.fm/pricing/
- type: CapabilityMap
  url: capabilities/transistor-capability-edges.yml
  name: Transistor Business Capability Map
- type: AgenticAccess
  url: agentic-access/transistor-agentic-access.yml
- type: TrustCenter
  url: security/transistor-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/transistor-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/transistor-domain-security.yml
- type: Authentication
  url: authentication/transistor-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/transistorfm
- type: Website
  url: https://transistor.fm
- type: Documentation
  url: https://developers.transistor.fm/
- type: Plans
  url: plans/transistor-plans-pricing.yml
- type: RateLimits
  url: rate-limits/transistor-rate-limits.yml
- type: FinOps
  url: finops/transistor-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Transistor API — frequently asked questions

Does Transistor have an API?

Yes. APIs.io lists 6 APIs from Transistor, including Transistor Account API, Transistor Analytics API and Transistor Episodes API, and 3 more.

Is there an OpenAPI specification for the Transistor API?

Yes. APIs.io indexes 6 OpenAPI specifications for Transistor, each linked for download from this page.

How do I authenticate with the Transistor API?

Transistor documents its authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Transistor Authentication.

How much does the Transistor API cost?

Transistor publishes its prices; its Starter plan is $19 as of 2026-09-20. APIs.io lists 4 pricing plans for Transistor, with each plan's price, limits and inclusions under Pricing on this page.

Does Transistor have an MCP server?

Yes. APIs.io lists 1 MCP server for Transistor: Remote MCP server at mcp.transistor.fm over HTTP.

Is the Transistor API ready for AI agents?

Transistor has a Kin Score of 39.8 out of 100 (developing) and an Agent Readiness score of 45.6 (agent-ready), scored by API Evangelist on 2026-11-13.

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