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Onchain superpowers
for AI agents

One expression queries 3 chains and thousands of contracts, auto-batches calls, and returns typed results in under 50ms. Give any AI agent the power to reason about blockchain state.

Get your API keyExplore the API

Free to start — no credit card

AI Agent
What's the total supply of USDC on Ethereum?
evmquery
// usdc.totalSupply()

{
  "result": {
    "value": "26000000000000",
    "type": "uint256"
  },
  "meta": {
    "block_number": "19542187",
    "total_calls": 1
  }
}
Supported chains
Ethereum
Base
BNB Smart Chain

LLMs can browse the web, read docs, and write code — but they're blind to the blockchain.

Without evmquery

> What's USDC total supply?

✗ I can't access blockchain
  data or decode contracts.

With evmquery

> What's USDC total supply?

✓ 26,000,000,000 USDC
  ABI auto-resolved · 48ms

250K+

API calls served

3

Chains supported

<50ms

Median latency

Get started in minutes

Choose how you want to connect.

// claude_desktop_config.json
{
  "mcpServers": {
    "evmquery": {
      "command": "npx",
      "args": ["@evmquery/mcp-server"],
      "env": {
        "EVMQUERY_API_KEY": "your-api-key"
      }
    }
  }
}

Frequently asked questions

Ethereum, Base, and BNB Smart Chain today. We’re actively adding more EVM-compatible chains — join the Discord or follow us on X to get notified when new chains go live.

Yes. We’re currently in public beta. The free plan includes approximately 10,000 queries per month — plenty for development and early production use. No credit card required to get started.

The free plan includes approximately 10,000 queries per month. All plans include auto-batching, so a single expression that touches multiple contracts counts as one API call. Paid plans with higher limits are coming soon.

Median response time is under 50ms for single-contract calls. Multi-contract expressions with auto-batching typically resolve in under 200ms. We cache ABI lookups so repeated queries are even faster.

API keys are scoped to your account and transmitted over HTTPS only. For MCP server usage, keys are stored in your local configuration file and never leave your machine. You can rotate keys at any time from the dashboard.

No. evmquery auto-resolves ABIs for verified contracts. For unverified contracts, you can supply an ABI in the schema field of your query.

Give your AI agents onchain superpowers.

Free tier included. No credit card. Set up in under a minute.

Get your API keyExplore the API