Recursiv

What is Recursiv?

Recursiv is a backend platform you access through a single SDK and API key. It gives you everything you need to build and run a complete application without managing any infrastructure.

It works for developers building in their own terminals and IDEs, and for AI agents (Claude Code, Cursor, Copilot) that build on your behalf.

What you get

Quick start

1. Get your API key

Sign up at recursiv.io, create an organization, and grab your API key from org settings.

2. Install the SDK

$
npm install @recursiv/sdk

3. Start building

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import { Recursiv } from '@recursiv/sdk';
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const r = new Recursiv(); // reads RECURSIV_API_KEY from env
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// Provision a database
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const { data: db } = await r.databases.ensure({
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  project_id: 'your-project-id',
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  name: 'main',
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});
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// Query it
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const { data: result } = await r.databases.query({
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  project_id: 'your-project-id',
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  sql: 'SELECT NOW() as time',
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});
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// Chat with an AI agent
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for await (const chunk of r.agents.chatStream('your-agent-id', {
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  message: 'Help me build a landing page',
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})) {
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  process.stdout.write(chunk.delta ?? '');
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}
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// Send an email
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await r.email.send({
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  to: 'user@example.com',
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  subject: 'Welcome',
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  html: '<h1>Welcome to the platform</h1>',
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});

Node.js >= 18. ESM only. Zero dependencies.

Choose your integration

TypeScript SDK

Full type safety, auto-retry with exponential backoff, SSE streaming, anonymous sandbox mode.

$
npm install @recursiv/sdk

SDK Reference | Quickstart

MCP (Claude Code / Claude Desktop)

Native tool integration for AI coding assistants. Your agent gets access to all platform capabilities.

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{
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  "mcpServers": {
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    "recursiv": {
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      "command": "npx",
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      "args": ["-y", "@recursiv/mcp"],
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      "env": { "RECURSIV_API_KEY": "sk_live_xxx" }
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    }
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  }
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}

MCP Setup

REST API

Standard HTTP endpoints for any language. Full OpenAPI spec available.

$
curl -X POST https://api.recursiv.io/api/v1/sandbox/try \
>
  -H 'Content-Type: application/json' \
>
  -d '{"code": "console.log(1+1)", "language": "typescript"}'

API Reference

Try without signing up

The anonymous sandbox lets you run code with zero setup:

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import { Recursiv } from '@recursiv/sdk';
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const r = new Recursiv({ anonymous: true });
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const { data } = await r.sandbox.execute({
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  code: 'console.log(1 + 1)',
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  language: 'typescript',
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});
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console.log(data.output); // "2\n"

No API key. No signup. 10 executions per day.

What do you want to build?

Pricing

Free to start with $5 in credits, no credit card required.

View pricing details

Security

• Isolated sandboxes for every agent and project
• Scoped API keys with fine-grained permissions
• Full audit trail on every action
• Cost guardrails to prevent runaway usage
• Self-hosting for full data control