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com.formatho/runtime

com.formatho/runtime · v0.3.0

Measured by MCP Station

Description written by the publisher, not verified

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

Connect

claude mcp add --transport http runtime https://mcp.formatho.com/mcp

{
  "mcpServers": {
    "runtime": {
      "url": "https://mcp.formatho.com/mcp"
    }
  }
}

Tools as reported by the server

• 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]

JSON · Text for agents · Registry updated 2026-09-12