# Crypto APIs Prepare Transactions

> Use this tool when you need to construct unsigned transactions for various blockchain networks, handling complex tasks like input selection and fee estimation. It solves problems related to transaction preparation on multiple chains, including EVM-compatible and UTXO-based networks. The tool takes in parameters like transaction details and API key, and outputs a structured unsigned transaction, ideal for use cases requiring automated transaction preparation across different blockchain platforms.

Canonical page: https://skillsregistry.net/skills/cryptoapis-prepare-transactions  
JSON: https://api.skillsregistry.net/v1/skills/cryptoapis-prepare-transactions

## Description

Constructs unsigned transactions for multiple blockchain networks, handling input selection, fee estimation, and transaction structure. Supports EVM-compatible chains, UTXO-based networks, and other blockchains. Part of the Crypto APIs suite, requiring a Crypto APIs API key for access.

## Trust

- **Trust score (0–1):** 0.65
- **Verification tier:** scanned
- **Last scanned:** 2026-09-02

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** finance
- **Updated:** 2026-09-02

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/cryptoapis-prepare-transactions)
- **Repository:** <https://github.com/cryptoapis-io/cryptoapis-mcp-prepare-transactions>

## 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": "cryptoapis-prepare-transactions"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/cryptoapis-prepare-transactions` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/cryptoapis-prepare-transactions/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