API for AI Agents

Give AI agents structured onchain data across 100+ EVM chains with Blockscout PRO API and MCP server for decoded transactions and metadata.

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

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 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. One key, one base URL, and a chain_id parameter to move between chains:

import requests

API_KEY = "your_blockscout_pro_key"
BASE = "https://api.blockscout.com/v2/api"
CHAIN_ID = "1"  # Ethereum mainnet — swap for any supported chain, e.g. "8453" for Base

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

def get_contract_abi(contract_address, chain_id=CHAIN_ID):
    """Retrieve ABI for a verified contract — lets agents interact with contracts."""
    resp = requests.get(BASE, params={
        "chain_id": chain_id,
        "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 and copy the setup instructions for your platform
2. For custom agents: Get a free API key at dev.blockscout.com
3. Need help? Join the Blockscout Discord — the dev team is active and responsive

→ AI Skills Portal · → PRO API Portal · → MCP Documentation