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

# API for AI Agents

# Onchain Data via Blockscout PRO API & MCP

> Give your AI agents access to structured blockchain data across 100+ EVM chains. No custom integration required.

## Why AI Agents Need Blockscout

AI agents operating onchain need reliable, structured data — not raw RPC responses they have to parse and interpret. Blockscout PRO API provides decoded transaction data, token metadata, contract context, and enriched address information in a format agents can work with immediately.

The Blockscout MCP (Model Context Protocol) server takes this further by providing a standardized interface that LLM-based agents can use natively, with multichain support built in.

## Two Integration Paths

### Path 1: MCP Server (for LLM agents)

The Blockscout MCP server gives AI assistants and coding agents direct access to onchain data through a standardized tool interface.

[→ Blockscout MCP Info](/devs/mcp-server)

**Supported platforms:**

* Claude Desktop
* Claude Code
* OpenAI Codex
* Google Gemini
* Any MCP-compatible agent framework

**Setup is copy-paste.** Visit the [Blockscout AI Skills Portal](https://www.blockscout.com/agents) for platform-specific instructions.

**Capabilities include:**

* Query address balances and transaction history across chains
* Inspect smart contract source code and ABIs
* Look up token metadata and transfers
* Analyze transaction details with decoded input data
* Retrieve block information and chain statistics

Multichain support is automatic, agents specify a `chain_id` parameter and the MCP server routes to the correct Blockscout instance.

### Path 2: REST API (for custom agent backends)

For agents with custom backends or automation pipelines, the PRO API provides direct HTTP access to the same data:

```python theme={null}
import requests

API_KEY = "your_blockscout_pro_key"
BASE = "https://eth.blockscout.com/api"

def get_address_activity(address, chain_base=BASE):
    """Get recent transactions for an address — useful for agent monitoring."""
    resp = requests.get(f"{chain_base}", params={
        "module": "account",
        "action": "txlist",
        "address": address,
        "sort": "desc",
        "apikey": API_KEY
    })
    return resp.json()["result"]

def get_contract_abi(contract_address, chain_base=BASE):
    """Retrieve ABI for a verified contract — lets agents interact with contracts."""
    resp = requests.get(f"{chain_base}", params={
        "module": "contract",
        "action": "getabi",
        "address": contract_address,
        "apikey": API_KEY
    })
    return resp.json()["result"]
```

## Agent Use Cases

**Monitoring & Alerting** — Agents that watch wallet activity, contract events, or token flows and trigger actions based on onchain conditions.

**Portfolio & Wallet Agents** — Conversational agents that report balances, transaction history, and token holdings across multiple chains.

**Contract Analysis** — Agents that inspect verified source code, read contract state, and explain contract behavior to users.

**Onchain Research** — Agents that investigate addresses, trace transaction flows, and compile cross-chain activity reports.

**DeFi Automation** — Agents that monitor liquidity positions, track gas costs, and execute strategies based on real-time chain data.

## Pricing for Agent Workloads

Agents tend to make high-frequency API calls. Blockscout's credit-based pricing is designed for this pattern — you pay for actual usage, not a fixed call count.

| Tier              | RPS    | Monthly Credits | Best For                      |
| ----------------- | ------ | --------------- | ----------------------------- |
| Free              | 5      | 100K/day        | Development & testing         |
| Builder (\$49/mo) | 15     | 100M            | Single-agent production       |
| Pro (\$199/mo)    | 30     | 500M            | Multi-agent or high-frequency |
| Enterprise        | Custom | Custom          | Fleet deployments             |

## Get Started

1. **For MCP agents:** Visit [blockscout.com/agents](https://www.blockscout.com/agents) and copy the setup instructions for your platform
2. **For custom agents:** Get a free API key at [dev.blockscout.com](https://dev.blockscout.com)
3. **Need help?** Join the [Blockscout Discord](https://discord.gg/blockscout) — the dev team is active and responsive

**→ [AI Skills Portal](https://www.blockscout.com/agents)** · **→ [PRO API Portal](https://dev.blockscout.com)** · **→ [MCP Documentation](https://docs.blockscout.com/devs/mcp-server)**