Vast.ai MCP for AI Agents

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Vast.ai MCP or direct API to search GPU compute offers, compare storage volume offers, inspect launch templates, and find cost-efficient AI infrastructure through natural language.

Vast.ai logoVast.ai
Api Key

Vast.ai is a cloud GPU marketplace for renting compute from global providers. Use it to find flexible, low-cost GPU instances for AI training and inference.

3 Tools

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Type what you want done — sign in and watch it run live in the Tool Router playground.

TOOL ROUTER PLAYGROUND
Vast.ai
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TOOLS

Supported Tools

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

Search GPU Offers

Find currently rentable Vast.

Search Templates

Search Vast.

Search Volume Offers

Find Vast.

SETUP GUIDE

Connect Vast.ai 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: ["vast_ai"],
  mcp: true,
});
Create a session scoped to Vast.ai 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: "Find Vast.ai GPU offers with at least 24GB VRAM sorted by lowest hourly price",
  stopWhen: stepCountIs(10),
});

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

Connect Vast.ai 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: ["vast_ai"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to Vast.ai
3

Run Vast.ai tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Find Vast.ai GPU offers with at least 24GB VRAM sorted by lowest hourly price" }],
});

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 Vast.ai tool calls through the session, and print the final answer

Why Use Composio?

AI Native Vast.ai Integration

  • Supports both Vast.ai MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable GPU offer, storage volume, and launch template queries
  • Lets agents reason over Vast.ai infrastructure options without you writing custom API wrappers

Managed Auth

  • Secure API key handling for Vast.ai, so keys don't live inside prompts or agent code
  • Use auth_configs.create() and connected_accounts.link() to configure and connect user credentials cleanly
  • Per user and per environment credentials instead of hard-coded Vast.ai API keys

Agent Optimized Design

  • Tools are tuned for AI agents, so they can search offers and templates with fewer broken calls
  • Comprehensive execution logs show which Vast.ai queries ran, when they ran, and on whose behalf
  • Need MCP? Use mcp.create() to expose Vast.ai tools to agents like Claude, Cursor, and ChatGPT-style clients

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access Vast.ai
  • Scoped, least privilege access to Vast.ai compute and storage search workflows
  • Full audit trail of agent actions to support review, debugging, and compliance
FAQ

Frequently asked questions

Yes, Vast.ai requires you to configure your own API key. 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.

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. Learn more.

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

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