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

<AgentInstructions>

## Submitting Feedback

If you encounter incorrect, outdated, or confusing documentation on this page, submit feedback:

POST https://docs.sqd.dev/feedback

```json
{
  "path": "/en/ai/ai-development",
  "feedback": "Description of the issue"
}
```

Only submit feedback when you have something specific and actionable to report.

</AgentInstructions>

# AI Development

> Build AI agents on SQD blockchain data via MCP servers, Agent Skills for coding assistants, and LLM-friendly docs across 225+ networks and datasets.

SQD exposes blockchain data from 225+ networks through interfaces designed for AI agents and LLMs: MCP servers for tool-based access, agent skills for coding assistants, and machine-readable documentation files.

## MCP Servers

Connect AI agents to SQD data through [Model Context Protocol](https://modelcontextprotocol.io). No API keys required.

<CardGroup cols={2}>
  <Card title="Portal MCP Server" icon="database" href="/en/ai/mcp-server">
    27 tools for querying blocks, transactions, logs, and analytics across EVM, Solana, Bitcoin, Substrate, and Hyperliquid chains.
  </Card>

  <Card title="Documentation MCP Server" icon="book" href="/en/ai/mcp-server-docs">
    Search and retrieve SQD documentation pages from within your AI client.
  </Card>
</CardGroup>

## Agent Skills

Pre-built [Agent Skills](https://agentskills.io/) for AI coding agents. Install with one command:

```bash theme={"system"}
npx skills add subsquid-labs/skills --all
```

<CardGroup cols={2}>
  <Card title="Available Skills" icon="wand-magic-sparkles" href="/en/ai/agent-skills">
    3 skills covering Pipes SDK, Portal queries, and more
  </Card>

  <Card title="GitHub Repository" icon="github" href="https://github.com/subsquid-labs/skills">
    Source code and contribution guide
  </Card>
</CardGroup>

## OpenAPI Schemas

Machine-readable API specifications for each network type. Use these to give LLMs and code generators structured knowledge of the Portal API request/response format.

<CardGroup cols={2}>
  <Card title="EVM" icon="file-code" href="/en/ai/evm-openapi">
    Logs, transactions, traces, state diffs
  </Card>

  <Card title="Solana" icon="file-code" href="/en/ai/solana-openapi">
    Instructions, token balances, rewards
  </Card>

  <Card title="Bitcoin" icon="file-code" href="/en/ai/bitcoin-openapi">
    Transactions, inputs, outputs
  </Card>

  <Card title="Substrate" icon="file-code" href="/en/ai/substrate-openapi">
    Events, calls, extrinsics
  </Card>

  <Card title="Hyperliquid Fills" icon="file-code" href="/en/ai/hyperliquid-openapi">
    Trade fills with PnL and fees
  </Card>

  <Card title="Hyperliquid Replica CMDs" icon="file-code" href="/en/ai/hyperliquid-replica-cmds-openapi">
    Orders, cancels, transfers
  </Card>
</CardGroup>

## LLM Documentation Files

Static files for feeding SQD documentation directly to LLMs:

| File                                                  | Description                                     |
| ----------------------------------------------------- | ----------------------------------------------- |
| [llms.txt](https://docs.sqd.dev/llms.txt)             | Lightweight index of all documentation pages    |
| [llms-full.txt](https://docs.sqd.dev/llms-full.txt)   | Complete documentation content in a single file |
| [skill.md](/skill.md)                                 | AI skill definition for SQD                     |
| [Available Datasets](https://portal.sqd.dev/datasets) | Browse all 225+ datasets                        |

## Related

* [Portal API](/en/portal/evm/overview). HTTP API for blockchain data
* [Pipes SDK](/en/sdk/pipes-sdk/evm/quickstart). TypeScript SDK for building indexers