> ## Documentation Index
> Fetch the complete documentation index at: https://docs.memoclaw.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Memory-as-a-Service API for AI agents. Store and recall memories using semantic vector search.

AI agents lose context between sessions. Local memory files require manual grep, break under context compression, and are locked to a single device.

**MemoClaw** is a hosted API where agents store memories and retrieve them by semantic similarity. Always available, cross-device, backed by PostgreSQL + pgvector.

<Tip>
  **Using OpenClaw?** Install [memoclaw-hooks](/openclaw-hooks) and your agent gets persistent cloud memory automatically — recalls on session start, stores on session end, consolidates in the background. Three commands, zero code.
</Tip>

## How it works

<CardGroup cols={3}>
  <Card title="Store" icon="database">
    Agent sends a memory with content, metadata, and importance. We generate embeddings and store it.
  </Card>

  <Card title="Recall" icon="magnifying-glass">
    Query by meaning, not keywords. Results ranked by semantic similarity and importance.
  </Card>

  <Card title="Pay" icon="wallet">
    No API keys. No accounts. x402 payment = authentication. Wallet address = identity.
  </Card>
</CardGroup>

## What makes MemoClaw different

<Info>
  No API keys, no user accounts, no registration. Your EVM wallet address **IS** your identity.
  Every wallet gets **100 free API calls** — no payment setup needed.
  After that, pay per request with USDC on Base via the [x402 protocol](https://x402.org).
</Info>

<CardGroup cols={2}>
  <Card title="OpenClaw Hooks" icon="plug" href="/openclaw-hooks">
    Automatic memory for OpenClaw agents. Install, restart, done.
  </Card>

  <Card title="Quickstart" icon="rocket" href="/get-started/quickstart">
    Install → init → store → recall in under 2 minutes.
  </Card>

  <Card title="Authentication" icon="lock" href="/get-started/authentication">
    How x402 payment-as-identity works.
  </Card>

  <Card title="API Reference" icon="code" href="/api-reference/overview">
    Explore all available endpoints.
  </Card>

  <Card title="MCP Integration" icon="server" href="/mcp-integration">
    Use MemoClaw with Claude Desktop, Cursor, or any MCP client.
  </Card>

  <Card title="Pricing" icon="tag" href="/reference/pricing">
    Per-request pricing details.
  </Card>
</CardGroup>