# com.formatho/runtime (oci · docker.io/formatho/formatho-runtime:0.3.0)

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

- Trust score: 32/100 (low)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- remote · `mcp.formatho.com`: 66/100, [markdown](https://verifymcp.io/servers/com-formatho-runtime/mcp.md), [page](https://verifymcp.io/servers/com-formatho-runtime/mcp)
- oci · `docker.io/formatho/formatho-runtime:0.3.0`: 32/100 (this document), [markdown](https://verifymcp.io/servers/com-formatho-runtime/docker-io-formatho-formatho-runtime-0-3-0.md), [page](https://verifymcp.io/servers/com-formatho-runtime/docker-io-formatho-formatho-runtime-0-3-0)

## Channel facts

- Registry: `oci`
- Package: `docker.io/formatho/formatho-runtime:0.3.0`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-20.

- **Supply Chain Security**: 0/100
  - Malware scan not yet available for this package.
  - Known CVEs could not be checked: this artifact ships no SBOM, so there is no dependency list to read. Publishing one would let us assess it.
  - Install-script risk not yet assessed.
  - Dependency health could not be checked: this artifact ships no SBOM, so there is no dependency list to read. Publishing one would let us assess it.
- **Provenance & Transparency**: 6/100
  - Repository check failed: no source repository is declared.
  - Provenance check failed: no build-provenance attestation is published.
  - License check failed: no license is declared.
  - Actively maintained (last published 13 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 62/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 1590 tokens (~61/item across 26 items; 26 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 26 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 27 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the com.formatho/runtime MCP server?

com.formatho/runtime runs locally as a container image, launched with docker run --rm -i docker.io/formatho/formatho-runtime:0.3.0. Ready-made configuration for Claude, Cursor, VS Code, Codex and 3 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add com-formatho-runtime -- docker run --rm -i docker.io/formatho/formatho-runtime:0.3.0
```

### Cursor

```json
{
  "mcpServers": {
    "com-formatho-runtime": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "-i",
        "docker.io/formatho/formatho-runtime:0.3.0"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-formatho-runtime": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "-i",
        "docker.io/formatho/formatho-runtime:0.3.0"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add com-formatho-runtime -- docker run --rm -i docker.io/formatho/formatho-runtime:0.3.0
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-formatho-runtime": {
      "type": "local",
      "command": [
        "docker",
        "run",
        "--rm",
        "-i",
        "docker.io/formatho/formatho-runtime:0.3.0"
      ],
      "enabled": true
    }
  }
}
```

### Hermes

```yaml
mcp_servers:
  com-formatho-runtime:
    command: "docker"
    args: ["run", "--rm", "-i", "docker.io/formatho/formatho-runtime:0.3.0"]
```

### Netclaw

```json
{
  "McpServers": {
    "com-formatho-runtime": {
      "Transport": "stdio",
      "Command": "docker",
      "Arguments": [
        "run",
        "--rm",
        "-i",
        "docker.io/formatho/formatho-runtime:0.3.0"
      ]
    }
  }
}
```

### Other

```json
{
  "mcpServers": {
    "com-formatho-runtime": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "-i",
        "docker.io/formatho/formatho-runtime:0.3.0"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-20 (score 32, +4)

- [functional improvement] Stability: unverified → 0.27

### 2026-09-12 (score 28)

First indexed and scored.

## MCP tools (26)

### `json.format` (~51 tokens)

Validate and pretty-print JSON with a configurable indent level. [data · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `indent` (integer)
- `json` (string, required)

### `json.minify` (~42 tokens)

Validate JSON and strip all insignificant whitespace. [data · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `json` (string, required)

### `json.validate` (~44 tokens)

Validate JSON and report the parse error position if invalid. [data · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `json` (string, required)

### `base64.encode` (~43 tokens)

Base64-encode text (standard alphabet). [data · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `text` (string, required)

### `base64.decode` (~42 tokens)

Base64-decode to text. [data · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `base64` (string, required)

### `url.encode` (~41 tokens)

Percent-encode text (component encoding). [network · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `text` (string, required)

### `url.decode` (~39 tokens)

Decode percent-encoded text. [network · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `text` (string, required)

### `slug.generate` (~44 tokens)

Convert text to a URL-safe kebab-case slug. [dev · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `text` (string, required)

### `hash.text` (~75 tokens)

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]

Input parameters:

- `algorithm` (string)
- `text` (string, required)

### `uuid.v4` (~41 tokens)

Generate random UUID v4 values. [security · v1.0.0 · deterministic: false · permissions: none]

Input parameters:

- `count` (integer)

### `random.string` (~42 tokens)

Generate a cryptographically random alphanumeric string. [security · v1.0.0 · deterministic: false · permissions: none]

Input parameters:

- `length` (integer)

### `jwt.decode` (~58 tokens)

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]

Input parameters:

- `token` (string, required)

### `evm.keccak256` (~66 tokens)

Keccak-256 (Ethereum flavor, NOT NIST SHA3-256) of arbitrary hex or text. [web3 · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `data` (string, required)
- `encoding` (string)

### `evm.function_selector` (~62 tokens)

Compute the 4-byte function selector from a canonical signature, with reverse lookup against common signatures. [web3 · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `selector` (string)
- `signature` (string)

### `evm.create2_address` (~80 tokens)

Compute the deterministic CREATE2 address: keccak256(0xff ‖ factory ‖ salt ‖ initCodeHash)[12:]. [web3 · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `factory` (string, required)
- `initCodeHash` (string, required)
- `salt` (string, required)

### `evm.storage_slot` (~90 tokens)

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]

Input parameters:

- `arrayIndex` (integer)
- `baseSlot` (integer, required)
- `keyHex` (string)
- `kind` (string)

### `evm.decode_calldata` (~75 tokens)

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]

Input parameters:

- `calldata` (string, required)

### `evm.v4_hook_permissions` (~90 tokens)

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]

Input parameters:

- `address` (string)
- `calls` (array)

### `erc4626.math` (~109 tokens)

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]

Input parameters:

- `amount` (string, required)
- `direction` (string)
- `totalAssets` (string, required)
- `totalSupply` (string, required)
- `virtualAssets` (string)
- `virtualShares` (string)

### `timestamp.convert` (~58 tokens)

Convert Unix seconds/milliseconds to ISO 8601 (UTC) and back. [dev · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `iso` (string)
- `value` (string|number)

### `regex.test` (~61 tokens)

Test a regular expression against text: match result plus all capture groups. [dev · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `flags` (string)
- `pattern` (string, required)
- `text` (string, required)

### `case.convert` (~61 tokens)

Convert an identifier between camelCase, snake_case, kebab-case, CONSTANT_CASE, and Title Case. [dev · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `text` (string, required)
- `to` (string)

### `hex.encode` (~59 tokens)

Encode text to hex, or decode hex (with or without 0x) to text. [data · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `hex` (string)
- `text` (string)

### `evm.checksum_address` (~53 tokens)

EIP-55 checksum an Ethereum address, or verify a checksummed one. [web3 · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `address` (string, required)

### `evm.unit_convert` (~68 tokens)

Convert EVM amounts between wei, gwei, and ether with exact BigInt math. [web3 · v1.0.0 · deterministic: true · permissions: none]

Input parameters:

- `from` (string)
- `to` (string)
- `value` (string, required)

### `formatho.registry` (~49 tokens)

List every registered Formatho tool with version, category, deterministic flag, permissions, and Formatho Verified status. [meta · v1.0.0 · deterministic: true · permissions: none]

## Diagnostics

Captured diagnostic sections: Provenance. The full working is on the page: https://verifymcp.io/servers/com-formatho-runtime/docker-io-formatho-formatho-runtime-0-3-0#diagnostics

## Score history

- 2026-09-20: 32
- 2026-09-19: 28
- 2026-09-18: 28
- 2026-09-17: 28
- 2026-09-16: 28
- 2026-09-15: 28
- 2026-09-14: 28
- 2026-09-13: 28
- 2026-09-12: 28

## Common questions

### What is the com.formatho/runtime MCP server?

com.formatho/runtime is an MCP server listed in the public MCP registry as com.formatho/runtime. Self-hosted MCP server: 26 deterministic dev, security, and EVM tools. This page covers its container image (docker.io/formatho/formatho-runtime:0.3.0).

### Is the com.formatho/runtime MCP server safe to use?

com.formatho/runtime scores 32 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the com.formatho/runtime MCP server expose?

com.formatho/runtime exposes 26 tools: json.format, json.minify, json.validate, base64.encode, base64.decode, and 21 more. Their descriptions and schemas cost roughly 1,543 tokens of context every time the server is loaded.

### Is the com.formatho/runtime MCP server still maintained?

com.formatho/runtime is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Changelog RSS feed: https://verifymcp.io/servers/com-formatho-runtime/docker-io-formatho-formatho-runtime-0-3-0.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-formatho-runtime/docker-io-formatho-formatho-runtime-0-3-0.json
- HTML version of this page: https://verifymcp.io/servers/com-formatho-runtime/docker-io-formatho-formatho-runtime-0-3-0