# Block402 (block402.xyz)

Reads Ethereum and Bitcoin mainnet balances, blocks, transactions and contract state over a pay-per-request JSON-RPC API.

- Atlas card: https://inite.ai/en/atlas/block402.xyz
- Site: https://block402.xyz
- For: AI agents and developers needing pay-per-request Ethereum and Bitcoin mainnet blockchain data
- Categories: legal
- Use 0/100 · alive 100/100

## Used for

- check wallet balances and block heights
- look up transaction receipts and blocks
- run bounded smart contract calls

## Price

- usage, no free plan (read 2026-10-26 on https://block402.xyz/#pricing)

## For developers

- OpenAPI: https://block402.xyz/openapi.json (1 paths)
- API docs: https://block402.xyz/docs/api.md
- MCP server: xyz.block402/block402 (namespace; open on 2026-10-26, 7 tools)
- Read 2026-10-26

## MCP server, measured daily

Server: https://api.block402.xyz/mcp, checked every day since 2026-10-27 (1 checks).

- Answered: measuring, 1 daily checks so far
- Median first answer: 310 ms
- Sign-in: none
- Context its tool definitions take: about 1306 tokens (7 tools)
- Tool definitions: B, 83/100
- Failing "params_described": 7 of 7 tools
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-26

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Source: INITE Atlas, https://inite.ai/en/atlas/block402.xyz. JSON: https://inite.ai/api/atlas/block402.xyz. MCP: https://inite.ai/api/mcp (atlas_lookup).