Summary
This server gives Claude cryptographic and encoding operations through five tools: hash (MD5, SHA family, HMAC), encode_decode (Base64, URL, HTML entities, hex, binary with auto-detection), generate_id (UUID v4, nanoid, ULID, CUID), password (generation with configurable charsets and strength checking with entropy calculation), and jwt (decode, expiry checks, unsigned token creation). It's built entirely on Node.js crypto without external dependencies. Reach for this when you need Claude to hash API signatures, decode tokens during debugging sessions, generate test identifiers, or analyze password strength. Everything runs locally through stdio transport, so no data leaves your machine.
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →
Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Tools
Public tool metadata for what this MCP can expose to an agent.
4 tools
get_spreadReal-time price spread between Binance and OKX. Returns gross%, net% after fees, best route, and profitability verdict.2 params
Real-time price spread between Binance and OKX. Returns gross%, net% after fees, best route, and profitability verdict.
Parameters* required
symbolstringCrypto symbol: BTC, ETH, SOL, etc.
taker_feenumberTaker fee per side as decimal. Default 0.001
get_funding_rateCurrent perpetual funding rates on Binance and OKX. Returns 8h rate, annualized yield, next settlement time.1 params
Current perpetual funding rates on Binance and OKX. Returns 8h rate, annualized yield, next settlement time.
Parameters* required
symbolstringCrypto symbol: BTC, ETH, SOL, etc.
get_cash_carryCash & Carry arbitrage yield calculator. Buy spot + short perp = near-zero market risk + funding income.2 params
Cash & Carry arbitrage yield calculator. Buy spot + short perp = near-zero market risk + funding income.
Parameters* required
capital_usdtnumberOptional: capital in USDT to estimate profit.
symbolstringCrypto symbol: BTC, ETH, SOL, etc.
get_exchange_statusLive operational status of Binance and OKX. Use when user reports failed orders or unexpected errors.
Live operational status of Binance and OKX. Use when user reports failed orders or unexpected errors.
No parameter schema in public metadata yet.
mcp-crypto-tools
Cryptography and encoding tools for AI agents, served via the Model Context Protocol (MCP).
Tools
hash
Hash text using MD5, SHA-1, SHA-256, SHA-512, or HMAC. Compare two hash values. Compute all algorithms at once.
Actions: hash, hmac, compare, hash_all
encode_decode
Encode and decode text using Base64, URL encoding, HTML entities, hex, or binary. Auto-detect encoding format.
Actions: base64_encode, base64_decode, url_encode, url_decode, html_encode, html_decode, hex_encode, hex_decode, binary_encode, binary_decode, detect
generate_id
Generate unique identifiers: UUID v4, nanoid, ULID, CUID, or random strings with configurable length and charset.
Types: uuid, nanoid, ulid, cuid, random
password
Generate secure passwords with configurable character sets, length, and count. Check password strength with entropy calculation and crack time estimation.
Actions: generate, check_strength
jwt
Decode JWT tokens to inspect header and payload, check expiry status, or create unsigned JWTs for testing.
Actions: decode, check_expiry, create_unsigned
Setup
npm install
npm run build
MCP Configuration
Add to your MCP client configuration:
{
"mcpServers": {
"crypto-tools": {
"command": "node",
"args": ["D:/products/mcp-servers/mcp-crypto-tools/dist/index.js"]
}
}
}
Dependencies
@modelcontextprotocol/sdk- MCP server framework- Node.js built-in
cryptomodule - all cryptographic operations
No external crypto libraries required.
License
MIT
Featured
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Categories
Registryactive
Package@rog0x/mcp-crypto-tools
TransportSTDIO
UpdatedMar 22, 2026
