Connect-MCP

com.formatho/runtime

com.formatho/runtime · v0.3.0

Self-hosted MCP server: 26 deterministic dev, security, and EVM tools.

MCPremotelocal · ocino credentialsCryptoSecurity

Reported outcomes

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Last check

Reachable, 26 tools, protocol 2025-06-18 · checked 2026-10-17

Test & rating

A 85/100

What it does: 26 tools · 1 read, 0 write · Crypto, Security

Test call random.string: worked (1,147 ms)

How the rating is made
  • Answers without login: +30
  • Speed of first answer: +10
  • Lists tools: +10
  • Tool descriptions: +15
  • Parameter descriptions: 0
  • Read/write annotations: 0
  • Safe test call: +20
  • More than 80 tools: 0

Tested 2026-10-17. Fixed rules, no AI model. Grade A needs a successful real call.

Install

Remote URL
https://mcp.formatho.com/mcp
Package
registry:   oci
identifier: docker.io/formatho/formatho-runtime:0.3.0
transport:  stdio

Tools

26 tools listed at last check
  • json.format Validate and pretty-print JSON with a configurable indent level. [data · v1.0.0 · deterministic: true · permissions: none]
  • json.minify Validate JSON and strip all insignificant whitespace. [data · v1.0.0 · deterministic: true · permissions: none]
  • json.validate Validate JSON and report the parse error position if invalid. [data · v1.0.0 · deterministic: true · permissions: none]
  • base64.encode Base64-encode text (standard alphabet). [data · v1.0.0 · deterministic: true · permissions: none]
  • base64.decode Base64-decode to text. [data · v1.0.0 · deterministic: true · permissions: none]
  • url.encode Percent-encode text (component encoding). [network · v1.0.0 · deterministic: true · permissions: none]
  • url.decode Decode percent-encoded text. [network · v1.0.0 · deterministic: true · permissions: none]
  • slug.generate Convert text to a URL-safe kebab-case slug. [dev · v1.0.0 · deterministic: true · permissions: none]
  • hash.text Hash text with md5/sha1/sha256/sha384/sha512 (hex output). MD5/SHA1 are for compatibility checks only, not security. [security · v1.0.0 · deterministic: true · permissions: none]
  • uuid.v4 Generate random UUID v4 values. [security · v1.0.0 · deterministic: false · permissions: none]
  • random.string Generate a cryptographically random alphanumeric string. [security · v1.0.0 · deterministic: false · permissions: none]
  • jwt.decode Decode a JWT (JWS compact serialization) header and claims WITHOUT verifying the signature. Reports expiry status from the exp claim. [security · v1.0.0 · deterministic: true · permissions: none]
  • evm.keccak256 Keccak-256 (Ethereum flavor, NOT NIST SHA3-256) of arbitrary hex or text. [web3 · v1.0.0 · deterministic: true · permissions: none]
  • evm.function_selector Compute the 4-byte function selector from a canonical signature, with reverse lookup against common signatures. [web3 · v1.0.0 · deterministic: true · permissions: none]
  • evm.create2_address Compute the deterministic CREATE2 address: keccak256(0xff ‖ factory ‖ salt ‖ initCodeHash)[12:]. [web3 · v1.0.0 · deterministic: true · permissions: none]
  • evm.storage_slot Compute Solidity storage slots: simple variables, mapping values (keccak(key ‖ p)), and dynamic array elements (keccak(p) + index). [web3 · v1.0.0 · deterministic: true · permissions: none]
  • evm.decode_calldata Extract the 4-byte selector from raw calldata, match it against common signatures, and decode static (word-based) arguments: address, uint256, int256, bytes32, bool. [web3 · v1.0.0 · deterministic: true · permissions: none]
  • evm.v4_hook_permissions Uniswap v4 hook permissions: compute the 14-bit permission field from hook-call names, or decode the field from a hook address (bits live in the LOW 14 bits: address & 0x3FFF). [web3 · v1.0.0 · deterministic: true · permissions: none]
  • erc4626.math Exact EIP-4626 vault math in BigInt: convert assets to shares (round down) and shares to assets (round down), with optional virtual offsets. [defi · v1.0.0 · deterministic: true · permissions: none]
  • timestamp.convert Convert Unix seconds/milliseconds to ISO 8601 (UTC) and back. [dev · v1.0.0 · deterministic: true · permissions: none]
  • regex.test Test a regular expression against text: match result plus all capture groups. [dev · v1.0.0 · deterministic: true · permissions: none]
  • case.convert Convert an identifier between camelCase, snake_case, kebab-case, CONSTANT_CASE, and Title Case. [dev · v1.0.0 · deterministic: true · permissions: none]
  • hex.encode Encode text to hex, or decode hex (with or without 0x) to text. [data · v1.0.0 · deterministic: true · permissions: none]
  • evm.checksum_address EIP-55 checksum an Ethereum address, or verify a checksummed one. [web3 · v1.0.0 · deterministic: true · permissions: none]
  • evm.unit_convert Convert EVM amounts between wei, gwei, and ether with exact BigInt math. [web3 · v1.0.0 · deterministic: true · permissions: none]
  • formatho.registry List every registered Formatho tool with version, category, deterministic flag, permissions, and Formatho Verified status. [meta · v1.0.0 · deterministic: true · permissions: none]

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