How do I get access to the Letterboxd API?

Access is granted by request only. You must email api@letterboxd.com with your project details and your app title as the subject line.

Do I need to manage my own API keys?

Vinkius manages the credentials and hosting for you. You connect once and the MCP stays running.

Can my agent see private user data?

No. The agent can only access public profiles and diaries. Accessing specific member capabilities requires the appropriate member scope to be granted to your API key.

What kind of film data is available?

You can get cast and crew lists, runtimes, weighted average ratings, and detailed rating histograms.

Is this compatible with Cursor or Claude?

Yes, this MCP works with any MCP-compatible client including Claude, Cursor, and Windsurf.

How do I get an API key?

Letterboxd API access is granted by request only: email api@letterboxd.com describing your intended use (subject = your app/project title). Approved apps receive an API key + API secret. There is no self-service registration.

How does the request signing work?

Every request adds apikey, nonce (unique UUID) and timestamp (unix seconds) params. The signature is the lower-case hex HMAC-SHA256 of the salted bytestring METHOD \0 fully-qualified URL \0 JSON body, using your API secret. appended as the final signature query parameter. Form-encoded POSTs (like /auth/token) put the signature in the Authorization header instead.

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Connect Letterboxd to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Bring the world's largest cinephile database to your AI agent.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

Waiting for input…

Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 6 capabilities

We ship only the actions that matter.

Capability set01 / 02

01-03

3 capabilities in this set.

Part of 6 available through Letterboxd.

01
Get film statistics
This capability pulls social analytics for a specific film. It returns the weighted average rating, the rating histogram from 0.5 to 5.0 stars, and counts for fans, watches, and lists.
02
Get film details
This capability retrieves full metadata for a film using its Letterboxd ID. You get access to the cast, crew, runtimes, and rating statistics.
03
Search films
This capability searches the Letterboxd database by film name or release year. It returns film LIDs and supports various sorting options like rating or release date.

Capability set02 / 02

04-06

3 capabilities in this set.

Part of 6 available through Letterboxd.

04
Search members
This capability finds Letterboxd users by their username. It provides the member IDs needed to access profiles or diaries.
05
Get member profile
This capability fetches a user's public profile. It includes their name, avatar, bio, and stats like total films watched and lists created.
06
Get member diary
This capability accesses a member's recent film logs. It shows the dates they watched films, their ratings, and whether they were re-watches.

Real work

What teams actually run

Film Recommendation Engines

Your agent uses film stats and user watch history to suggest what to watch next.

Trend Analysis

Analyze how certain genres or directors perform based on weighted ratings and fan counts.

Personalized Film Diaries

An agent can summarize a user's recent viewing habits by reading their diary.

Comparative Film Studies

Compare the reception of two films by looking at their specific rating spreads.

One connector, every AI

Letterboxd works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put Letterboxd to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

945ms average. Fast in production.

Letterboxd is checked daily against the live service.

Daily averagePeak 1228ms

Oct 3Today

Fastest day: 793ms
Slowest day: 1228ms
14-day trend: Slowing+5%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 6 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Letterboxd, so you can see the experience inside your AI.

It does not authenticate your account with Letterboxd. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Letterboxd Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_qA1kN4kUSQ9o6ZmpsSsRrM27qNucAQ2GUSPcwOO0/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — Letterboxd capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "letterboxd-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_qA1kN4kUSQ9o6ZmpsSsRrM27qNucAQ2GUSPcwOO0/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up Letterboxd in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Letterboxd owners hand off.

This MCP is built for anyone needing real-time social film data for their AI-driven applications.

01
Data Analysts
They use the rating histograms and watch counts to study film trends.
02
App Developers
They integrate Letterboxd data into watchlist or recommendation capabilities.
03
AI Agent Users
They use the capability to turn their AI client into a knowledgeable film critic.

FAQ

Questions Letterboxd owners ask.

01
How do I get access to the Letterboxd API?
Access is granted by request only. You must email api@letterboxd.com with your project details and your app title as the subject line.
02
Do I need to manage my own API keys?
Vinkius manages the credentials and hosting for you. You connect once and the MCP stays running.
03
Can my agent see private user data?
No. The agent can only access public profiles and diaries. Accessing specific member capabilities requires the appropriate member scope to be granted to your API key.
04
What kind of film data is available?
You can get cast and crew lists, runtimes, weighted average ratings, and detailed rating histograms.
05
Is this compatible with Cursor or Claude?
Yes, this MCP works with any MCP-compatible client including Claude, Cursor, and Windsurf.
06
How do I get an API key?
Letterboxd API access is granted by request only: email api@letterboxd.com describing your intended use (subject = your app/project title). Approved apps receive an API key + API secret. There is no self-service registration.
07
How does the request signing work?
Every request adds apikey, nonce (unique UUID) and timestamp (unix seconds) params. The signature is the lower-case hex HMAC-SHA256 of the salted bytestring METHOD \0 fully-qualified URL \0 JSON body, using your API secret. appended as the final signature query parameter. Form-encoded POSTs (like /auth/token) put the signature in the Authorization header instead.

Explore

More in Data Analytics

Connect Letterboxd to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-03

Get film statistics

Get film details

Search films

04-06

Search members

Get member profile

Get member diary

What teams actually run

Film Recommendation Engines

Trend Analysis

Personalized Film Diaries

Comparative Film Studies

Building your own app? The connector is yours to use.

Letterboxd Connector

Claude Desktop

Data Analysts

App Developers

AI Agent Users

How do I get access to the Letterboxd API?

Do I need to manage my own API keys?

Can my agent see private user data?

What kind of film data is available?

Is this compatible with Cursor or Claude?

How do I get an API key?

How does the request signing work?

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