universal-crypto-mcp-guide SKILL.md skillA
universal-crypto-mcp-guide from nirholas/three.ws is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nirholas/three.ws/universal-crypto-mcp-guide@git:20260501.87cefc9Pins git:20260501.87cefc9 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nirholas/three.ws
- Path
data/skills/development/universal-crypto-mcp-guide/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260501.87cefc9, committed May 1, 2026
- Size
- 4,262 bytes
- Repository stars
- 269
- License
- Apache-2.0
Guide to the Universal Crypto MCP server — a multi-chain MCP for AI agents to interact with any blockchain via natural language. Supports swaps, bridges, gas estimation, staking, lending, and more across Ethereum, Arbitrum, Base, Polygon, BSC, and testnets. Plugin architecture for extensibility.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Universal Crypto MCP Server Guide
The Universal Crypto MCP is a single MCP server that lets AI agents interact with any EVM blockchain through natural language. Instead of configuring separate servers for each chain, this one server handles everything.
## Supported Chains
| Chain | Chain ID | RPC | Status |
|-------|----------|-----|--------|
| Ethereum | 1 | Public/Infura/Alchemy | ✅ |
| Arbitrum One | 42161 | Public | ✅ |
| Base | 8453 | Public | ✅ |
| Polygon | 137 | Public | ✅ |
| BSC | 56 | Public | ✅ |
| Optimism | 10 | Public | ✅ |
| Avalanche | 43114 | Public | ✅ |
| Sepolia Testnet | 11155111 | Public | ✅ |
## Quick Start
```bash
npx @nirholas/universal-crypto-mcp
```
### Claude Desktop Config
```json
{
"mcpServers": {
"universal-crypto": {
"command": "npx",
"args": ["@nirholas/universal-crypto-mcp"]
}
}
}
```
## Core Tools
### Token Operations
| Tool | Description |
|------|-------------|
| `getBalance` | Get native/token balance on any chain |
| `getTokenInfo` | Token metadata (name, symbol, decimals, supply) |
| `transfer` | Transfer tokens between addresses |
| `approve` | Set token spending allowance |
### DeFi Operations
…Read the whole file at its exact version.
How to install
mdr add nirholas/three.ws/universal-crypto-mcp-guide@sha256:e98da94c2b161ef5The line at the top of this page pins the label git:20260501.87cefc9, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ghh4rvty6gfb7cmv)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on May 1, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4262 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
nirholas/three.ws · 269 stars · license Apache-2.0 · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ghh4rvty6gfb7cmv GET https://markdownregistry.com/api/v1/resolve?ref=nirholas/three.ws/universal-crypto-mcp-guide GET https://markdownregistry.com/api/v1/blob/e98da94c2b161ef5b69decdddd5015190781d753caccd7469ba535aa1e019a3f
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.