AI Native Linq Integration
- Supports both Linq MCP and direct API based integrations
- Structured, LLM-friendly schemas for sending messages and managing conversations
- Rich coverage for SMS, RCS, iMessage, attachments, payments, and webhooks
- UseBuild
- DEVELOPERS
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.SIGN UP
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.LOG IN
Linq MCP server for AI agents and assistants
Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Linq MCP or direct API to send messages, manage conversations, share attachments, and handle phone numbers through natural language.
Api Key
Linq is a communications API for sending and managing iMessage, RCS, and SMS conversations. It also supports attachments, phone numbers, payments, and webhooks in one platform.
68 Tools
Try Linq now
Type what you want done — sign in and watch it run live in the Tool Router playground.
TOOL ROUTER PLAYGROUND
Linq
Enter ↵
Try asking
TOOLS
Supported Tools
Every Linq action and event your agent gets out of the box.
SETUP GUIDE
Connect Linq MCP Tool with your Agent
1
Install Composio
typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openaiInstall 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: ["linq"],
mcp: true,
});Create a session scoped to Linq 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: "Send an SMS to +14155550123 saying the appointment is confirmed for tomorrow at 10 AM",
stopWhen: stepCountIs(10),
});
console.log(text);
await client.close();Pass the session's MCP URL and headers to your agent and run a Linq request
SETUP GUIDE
Connect Linq API Tool with your Agent
1
Install Composio
typescript
npm install @composio/core @composio/openai openaiInstall 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: ["linq"] });
const tools = await session.tools();Initialize Composio with the OpenAI Responses provider and create a session scoped to Linq
3
Run Linq tools with your agent
typescript
let response = await client.responses.create({
model: "gpt-5.6-sol",
tools,
input: [{ role: "user", content: "Send an SMS to +14155550123 saying the appointment is confirmed for tomorrow at 10 AM" }],
});
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 Linq tool calls through the session, and print the final answer
Why Use Composio?
Secure API Key Auth
- Connect Linq with securely stored API key credentials
- Keep authentication details out of prompts, source code, and agent responses
- Manage Linq access per user and environment
Agent Optimized Design
- Tools are tuned using real error and success rates to improve reliability over time
- Clear schemas help agents choose the right Linq action for each request
- Comprehensive execution logs show what ran, when, and on whose behalf
Enterprise Grade Security
- Fine-grained RBAC lets you control which agents and users can access Linq
- Scoped, least-privilege access helps protect messaging and payment operations
- Full audit trails support review and compliance
FRAMEWORKS
Use Linq with any AI Agent Framework
Choose a Framework you want to connect Linq with
Rolling this out across your team?
Give your team centralized access control across every framework with Composio’s MCP Gateway.
EXPLORE MCP GATEWAYMORE TOOLKITS
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Slack
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Slack is a channel-based messaging platform for teams and organizations. It helps people collaborate in real time, share files, and connect all their tools in one place.
Gong
BasicOauth2
Gong is a platform for video meetings, call recording, and team collaboration. It helps teams capture conversations, analyze calls, and turn insights into action.
FAQ
Frequently asked questions
Yes, Linq 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 Linq 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 Linq account settings, then paste it once on Composio's connection page. Composio stores it encrypted and uses it only for the Linq actions your agent runs. Nobody else in your workspace can read it, and you can revoke it inside Linq at any time.
When you connect a Linq account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Linq 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 Linq. If Linq 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 Linq 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 Linq 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 Linq rejects the old key. Create a new key in Linq and reconnect the account from the Composio dashboard or by asking your agent to reconnect Linq. Nothing else changes.
Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal Linq use. Paid plans add higher limits and team features. Your Linq 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 Linq accounts).
With Composio, you connect Linq 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.
Start with Linq.It takes 30 seconds.
Managed auth, hosted MCP servers, and every Linq tool your agent needs.Free to start.
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.Start building