# io.github.0xmortuex/mort-mcp (pypi · mort-mcp)

Write, type-check and run Mort code, with language spec and stdlib lookup.

- Trust score: 67/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-17

## Components

- pypi · `mort-mcp`: 67/100 (this document), [markdown](https://verifymcp.io/servers/0xmortuex-mort-mcp/mort-mcp.md), [page](https://verifymcp.io/servers/0xmortuex-mort-mcp/mort-mcp)

## Channel facts

- Registry: `pypi`
- Package: `mort-mcp`
- Version: `0.1.0`
- 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 2026-10-17.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs hatchling.build at install time, a recognised build step with no custom scripting around it.
  - 1 of 28 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 5 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 69/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 707 tokens (~88/item across 8 items; 8 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 8 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 9 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (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 io.github.0xmortuex/mort-mcp server?

io.github.0xmortuex/mort-mcp runs locally as a PyPI package, launched with uvx mort-mcp. 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 0xmortuex-mort-mcp -- uvx mort-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "0xmortuex-mort-mcp": {
      "command": "uvx",
      "args": [
        "mort-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "0xmortuex-mort-mcp": {
      "command": "uvx",
      "args": [
        "mort-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add 0xmortuex-mort-mcp -- uvx mort-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "0xmortuex-mort-mcp": {
      "type": "local",
      "command": [
        "uvx",
        "mort-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add 0xmortuex-mort-mcp --command uvx --arg mort-mcp
```

### Hermes

```yaml
mcp_servers:
  0xmortuex-mort-mcp:
    command: "uvx"
    args: ["mort-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "0xmortuex-mort-mcp": {
      "Transport": "stdio",
      "Command": "uvx",
      "Arguments": [
        "mort-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add 0xmortuex-mort-mcp -t stdio -c uvx -a mort-mcp
```

### Other

```json
{
  "mcpServers": {
    "0xmortuex-mort-mcp": {
      "command": "uvx",
      "args": [
        "mort-mcp"
      ]
    }
  }
}
```

## 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.

### 2026-10-16 (score 67, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-10-15 (score 52, −15)

- [security regression] Malware scan: pass → unverified

### 2026-10-14 (score 67, +43)

- [security improvement] Injection markers: unverified → pass
- [security improvement] Malware scan: unverified → pass
- [security] First check of Judged manipulation: pass
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] MCP protocol: unverified → pass
- [functional] First check of Tool coverage: 0
- [functional] First check of Schema quality: fail
- [functional] First check of Destructive annotations: pass
- [functional] First check of Schema quality: pass
- [functional] First check of Schema quality: good
- [functional] First check of Tool coverage: 100

### 2026-10-12 (score 24)

First indexed and scored.

## MCP tools (8)

### `mort_version` (~22 tokens)

Report the Mort compiler version, language version and where it was found.

Output parameters:

- `result` (string)

### `mort_check` (~91 tokens)

Type-check Mort code without building it (fast; needs no C compiler).

Pass `source` (a whole program as text) and/or `files` (paths to .mx
files compiled together as one program). Returns OK or the compiler's
diagnostics with file:line:column and the offending source line.

Input parameters:

- `files`
- `source`
- `warn_unused` (boolean)

Output parameters:

- `result` (string)

### `mort_run` (~118 tokens)

Compile Mort code to a native binary and run it, capturing its output.

Needs a C compiler (cc/gcc/clang, or `pip install ziglang`). `stdin` is
fed to the program, `args` are its command-line arguments, and it is
killed after timeout_s. Reports compile errors the same way mort_check does.

Input parameters:

- `args`
- `files`
- `opt_level` (string)
- `source`
- `stdin` (string)
- `timeout_s` (number)

Output parameters:

- `result` (string)

### `mort_emit_c` (~79 tokens)

Show the C that Mort generates for a program (useful to see what a
construct compiles to, or to debug codegen). freestanding=True emits
bare-metal C (no libc, no main) as used for the MORT OS kernel.

Input parameters:

- `files`
- `freestanding` (boolean)
- `source`

Output parameters:

- `result` (string)

### `mort_format` (~34 tokens)

Format Mort source with the official formatter (`mortc fmt`) and
return the formatted text.

Input parameters:

- `source` (string, required)

Output parameters:

- `result` (string)

### `mort_std` (~68 tokens)

Look up the standard library.

With no module: list every std module. With a module (e.g. "strings" or
"std.vec"): its public functions, structs and enums with exact
signatures and doc comments, read from the installed compiler's source.

Input parameters:

- `module`

Output parameters:

- `result` (string)

### `mort_docs` (~77 tokens)

Search the Mort language specification and reference docs.

Returns the best-matching sections, e.g. query="resource struct cleanup",
"integer overflow", "slices", "error propagation ?". Requires MORT_HOME
(a Mort checkout) since pip installs don't ship the docs.

Input parameters:

- `limit` (integer)
- `query` (string, required)

Output parameters:

- `result` (string)

### `mort_examples` (~46 tokens)

List the compiler's bundled example programs, or show one by name.
Examples are known-good Mort - a fast way to learn idioms. Needs MORT_HOME.

Input parameters:

- `name`

Output parameters:

- `result` (string)

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/0xmortuex-mort-mcp/mort-mcp#diagnostics

## Score history

- 2026-10-17: 67
- 2026-10-16: 67
- 2026-10-15: 52
- 2026-10-14: 67
- 2026-10-13: 24
- 2026-10-12: 24

## Common questions

### What is the io.github.0xmortuex/mort-mcp server?

io.github.0xmortuex/mort-mcp is listed in the public MCP registry as io.github.0xmortuex/mort-mcp. Write, type-check and run Mort code, with language spec and stdlib lookup. This page covers its PyPI package (mort-mcp).

### Is the io.github.0xmortuex/mort-mcp server safe to use?

io.github.0xmortuex/mort-mcp scores 67 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 17 October 2026. 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 io.github.0xmortuex/mort-mcp server expose?

io.github.0xmortuex/mort-mcp exposes 8 tools: mort_version, mort_check, mort_run, mort_emit_c, mort_format, and 3 more. Their descriptions and schemas cost roughly 535 tokens of context every time the server is loaded.

### Is the io.github.0xmortuex/mort-mcp server still maintained?

io.github.0xmortuex/mort-mcp is still listed as active in the MCP registry. We last reached this channel on 17 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the io.github.0xmortuex/mort-mcp server under?

io.github.0xmortuex/mort-mcp declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- PyPI project: https://pypi.org/project/mort-mcp/
- Socket report: https://socket.dev/pypi/package/mort-mcp
- Repository: https://github.com/0xmortuex/mort-mcp
- Changelog RSS feed: https://verifymcp.io/servers/0xmortuex-mort-mcp/mort-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/0xmortuex-mort-mcp/mort-mcp.json
- HTML version of this page: https://verifymcp.io/servers/0xmortuex-mort-mcp/mort-mcp