# com.formatho/runtime (remote · mcp.formatho.com)

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

- Trust score: 66/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- remote · `mcp.formatho.com`: 66/100 (this document), [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, [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

- Endpoint: `https://mcp.formatho.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.3.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, 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.

- **Endpoint Security**: 57/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 26 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **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**: 50/100
  - Stability observed for 15 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.

## Install

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

com.formatho/runtime is a hosted endpoint at https://mcp.formatho.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

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

### Cursor

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

### VS Code

```json
{
  "servers": {
    "com-formatho-runtime": {
      "type": "http",
      "url": "https://mcp.formatho.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-formatho-runtime]
url = "https://mcp.formatho.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-formatho-runtime": {
      "type": "remote",
      "url": "https://mcp.formatho.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-formatho-runtime --url 'https://mcp.formatho.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-formatho-runtime:
    url: "https://mcp.formatho.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-formatho-runtime": {
      "Transport": "http",
      "Url": "https://mcp.formatho.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-formatho-runtime -t streamable-http -u 'https://mcp.formatho.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-formatho-runtime": {
      "type": "http",
      "url": "https://mcp.formatho.com/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## 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.

### 2026-09-19 (score 66, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-16 (score 65, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-14 (score 64, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-12 (score 63, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-10 (score 62, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-08 (score 61, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-07 (score 60, 0)

- [security] The server rewrote its instructions, which are the text every model session reads
- [security] Tool “formatho.registry” rewrote its description, which is the text the model reads
- [functional] Server version: 0.2.6 → 0.3.0

### 2026-09-06 (score 60, +1)

- [functional improvement] Stability: unverified → 0.03

## 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: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-formatho-runtime/mcp#diagnostics

## Score history

- 2026-09-20: 66
- 2026-09-19: 66
- 2026-09-18: 65
- 2026-09-17: 65
- 2026-09-16: 65
- 2026-09-15: 64
- 2026-09-14: 64
- 2026-09-13: 63
- 2026-09-12: 63
- 2026-09-11: 62
- 2026-09-10: 62
- 2026-09-09: 61
- 2026-09-08: 61
- 2026-09-07: 60
- 2026-09-06: 60
- 2026-09-05: 59

## 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 hosted endpoint (https://mcp.formatho.com/mcp).

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

com.formatho/runtime scores 66 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.

### Does the com.formatho/runtime MCP server require authentication?

No. We connected to com.formatho/runtime without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### 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

- Remote endpoint: https://mcp.formatho.com/mcp
- Changelog RSS feed: https://verifymcp.io/servers/com-formatho-runtime/mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-formatho-runtime/mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-formatho-runtime/mcp