Back to search
100
MCP live MCP 2025-11-25 streamable-http

com.formatho/runtime

com.formatho/runtime

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

Watch this dependency Share evidence report
Uptime
100.0%
5 direct probes · 30d
Response
875ms
last probe
Tools
26
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://mcp.formatho.com/mcp
Score: 100/100
Handshake verified by our own probe.
pass Answers the MCP handshake 50/50
The handshake and the list calls succeeded on the primary URL.
pass Lists tools, resources or prompts 30/30
26 tools, 0 resources, 0 prompts returned.
pass 3 or more catalogue items 10/10
26 items in total; 3 or more earns these points.
pass Describes itself 10/10
70 characters; more than 30 earns these points.

Tools · 26

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: tr…

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 · determ…

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]

How to use

Claude Desktop or claude.ai: add a custom connector (Customize → Connectors; on Team and Enterprise plans an owner adds it under Organization settings → Connectors) with this server URL: https://mcp.formatho.com/mcp

Cursor or Cline: add to your MCP config:

{
  "mcpServers": {
    "com.formatho/runtime": {
      "url": "https://mcp.formatho.com/mcp",
      "transport": "streamable-http"
    }
  }
}