Lokalise MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Lokalise MCP or direct API to manage projects, list localization keys, review translations, and sync files through natural language.

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Lokalise is a translation and localization management platform for multilingual apps, websites, files, keys, and content. It helps teams ship localized products faster with organized workflows, contributors, and reviews.

10 Tools

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TOOL ROUTER PLAYGROUND
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TOOLS

Supported Tools

Every Lokalise action and event your agent gets out of the box.

Create Keys

Create 1 to 500 keys in a Lokalise project or branch.

Delete Keys

Permanently delete one or more keys from a Lokalise project or branch.

List Audit Logs

List one page of team audit events in OCSF 1.

List Branches

List one page of branches for a Lokalise project.

List Keys

Search and return one cursor page of keys from a Lokalise project or branch.

List Project Languages

List one page of languages configured for a Lokalise project or, when branch_name is supplied, for a branch.

List Projects

List projects available to the connected Lokalise API token, optionally filtered by team or exact project names.

List Translations

Search and return one cursor page of translations from a Lokalise project or branch by language, review state, task, or QA issue.

Update Keys

Batch update keys and their translations, including key metadata, translation content, review flags, and custom statuses, in one Lokalise project or branch.

Update Translation

Update one translation's content and review or status flags in a Lokalise project or branch.

SETUP GUIDE

Connect Lokalise MCP Tool with your Agent

1

Install Composio

typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openai
Install the Composio SDK and your agent framework
2

Create a session with MCP enabled

typescript
import { Composio } from "@composio/core";

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["lokalise"],
  mcp: true,
});
Create a session scoped to Lokalise and read its MCP URL and headers
3

Connect your agent to the MCP server

typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";

const client = await createMCPClient({
  transport: { type: "http", url: mcp.url, headers: mcp.headers },
});

const { text } = await generateText({
  model: openai("gpt-5.6-sol"),
  tools: await client.tools(),
  prompt: "List all Lokalise projects and show their project IDs and base languages.",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
Pass the session's MCP URL and headers to your agent and run a Lokalise request
SETUP GUIDE

Connect Lokalise API Tool with your Agent

1

Install Composio

typescript
npm install @composio/core @composio/openai openai
Install the Composio SDK, the OpenAI provider, and the OpenAI SDK
2

Create a Composio session

typescript
import OpenAI from "openai";
import { Composio } from "@composio/core";
import { OpenAIResponsesProvider } from "@composio/openai";

const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();

const session = await composio.create("your-user-id", { toolkits: ["lokalise"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to Lokalise
3

Run Lokalise tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "List all Lokalise projects and show their project IDs and base languages." }],
});

while (response.output.some((o) => o.type === "function_call")) {
  const outputs = await composio.provider.handleToolCalls(session, response.output);
  response = await client.responses.create({
    model: "gpt-5.6-sol",
    tools,
    previous_response_id: response.id,
    input: outputs,
  });
}

console.log(response.output_text);
Send a request, execute the Lokalise tool calls through the session, and print the final answer

Why Use Composio?

AI Native Lokalise Integration

  • Supports both Lokalise MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable translation workflow execution
  • Rich coverage for reading, writing, and querying Lokalise projects, keys, translations, files, and contributors

Managed Auth

  • Secure API key handling so agents don't need hard-coded Lokalise credentials
  • Central place to manage, scope, and revoke Lokalise access
  • Per user and per environment credentials for safer localization automation

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve reliability over time
  • Clear schemas help agents understand Lokalise actions like listing projects, finding untranslated keys, and uploading files
  • Comprehensive execution logs so you always know what ran, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access Lokalise
  • Scoped, least privilege access to localization projects, files, keys, and translations
  • Full audit trail of agent actions to support review and compliance
FAQ

Frequently asked questions

Yes, Lokalise requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Yes. Composio is SOC 2 Type II compliant and is built to keep your Lokalise connection and credentials secure. OAuth tokens and API keys are encrypted, and sensitive customer data is protected at rest and in transit.

Composio also undergoes independent security testing and continuously monitors its systems for security threats. You can review the latest reports and policies in the Composio Trust Center.

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

Create the key in your Lokalise account settings, then paste it once on Composio's connection page. Composio stores it encrypted and uses it only for the Lokalise actions your agent runs. Nobody else in your workspace can read it, and you can revoke it inside Lokalise at any time.

When you connect a Lokalise account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Lokalise as done by you. Keep an approval step in your prompt for actions with side effects, such as sending or deleting, and have the agent draft first.

Whatever the credentials you connect allow inside Lokalise. If Lokalise lets you scope a key to specific permissions, create a scoped one so the agent can only do what you intend. You can revoke the key inside Lokalise at any time.

Yes. Composio supports multiple connected accounts for the same app, and that works in Claude, ChatGPT, or any other assistant you connect through Composio. Give each Lokalise connection a name such as work or personal, and the assistant uses the one you mention in the request. Each account keeps its own credentials and nothing is merged.

The connection stops working the moment Lokalise rejects the old key. Create a new key in Lokalise and reconnect the account from the Composio dashboard or by asking your agent to reconnect Lokalise. Nothing else changes.

Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal Lokalise use. Paid plans add higher limits and team features. Your Lokalise plan and its API limits still apply as usual.

Built-in connectors usually give one AI access to a limited set of apps. Many people use Composio because it lets their AI connect to more apps than it normally supports, or connect to multiple accounts for the same app (e.g. connect Claude to multiple Lokalise accounts).

With Composio, you connect Lokalise once and then use it across different AI assistants without setting it up separately in each one. Connect your apps to Composio once, then connect Composio to whichever AI you use, whether that's Claude, ChatGPT, Hermes, or your own custom assistant.

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