# Cryo

> Use this tool when you need to analyze Ethereum blockchain data with efficient SQL-based queries, enabling you to explore and download blocks, transactions, and logs with advanced filtering and aggregation. It solves problems for blockchain researchers, data analysts, and developers by providing programmatic access to on-chain data with minimal setup complexity. The Cryo MCP Server accepts queries through a flexible API and returns analyzed data, making it ideal for use cases requiring in-depth blockchain data analysis.

Canonical page: https://skillsregistry.net/skills/z80-cryo-blockchain  
JSON: https://api.skillsregistry.net/v1/skills/z80-cryo-blockchain

## Description

Cryo MCP Server provides a powerful interface for querying Ethereum blockchain data using the Cryo extraction tool and DuckDB for efficient SQL-based analysis. Built by z80, it enables developers and researchers to download, explore, and analyze blockchain data through a flexible API that supports querying blocks, transactions, logs, and other datasets with advanced filtering and aggregation capabilities. The implementation is particularly useful for blockchain researchers, data analysts, and developers seeking programmatic access to on-chain data with minimal setup complexity.

## Trust

- **Trust score (0–1):** 0.60
- **Verification tier:** scanned
- **Last scanned:** 2026-09-01

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** finance
- **Updated:** 2026-09-01

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/z80-cryo-blockchain)
- **Repository:** <https://github.com/z80dev/cryo-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "z80-cryo-blockchain"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/z80-cryo-blockchain` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/z80-cryo-blockchain/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt