# KatanA Markdown Linter (mcpb · katana-markdown-linter-0.20.1.mcpb)

Markdown linter, workspace-scoped stdio MCP server, and self-hosted text-only remote MCP server.

- Trust score: 51/100 (low)
- Change this week: 0
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- mcpb · `katana-markdown-linter-0.20.1.mcpb`: 51/100 (this document), [markdown](https://verifymcp.io/servers/hiroyukifuruno-kml/https-github-com-hiroyukifuruno-katana-markdown-linter-releases-download-v0-19-5.md), [page](https://verifymcp.io/servers/hiroyukifuruno-kml/https-github-com-hiroyukifuruno-katana-markdown-linter-releases-download-v0-19-5)

## Channel facts

- Registry: `mcpb`
- Package: `https://github.com/HiroyukiFuruno/katana-markdown-linter/releases/download/v0.20.1/katana-markdown-linter-0.20.1.mcpb`
- Version: `0.20.1`
- Transport: `stdio`
- SHA-256: `b148e795d695e744865e8c723e68c18c9fe29fb931eb47dc94c11330f7ba3f94`

## 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 2026-11-05.

- **Supply Chain Security**: 0/100
  - No malware scan is available for this kind of package: the supply-chain vendors we use do not cover it. This is a permanent gap in our coverage, not a finding about the package.
  - Known CVEs could not be checked: we found no dependency list to check in this bundle: either it runs a compiled binary, whose bundled manifests we do not read, or none of the package.json, requirements.txt, pyproject.toml or uv.lock files it ships for its runtime declares a dependency we can read (a requirements.txt that only points at a setup.py project, a local path, or a nested requirements file we cannot follow counts as none).
  - Install-script risk not yet assessed.
  - Dependency health could not be checked: we found no dependency list to check in this bundle: either it runs a compiled binary, whose bundled manifests we do not read, or none of the package.json, requirements.txt, pyproject.toml or uv.lock files it ships for its runtime declares a dependency we can read (a requirements.txt that only points at a setup.py project, a local path, or a nested requirements file we cannot follow counts as none).
- **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 6 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 67/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 443 tokens (~44/item across 10 items; 10 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 100/100
  - No destabilizing schema changes in the last 30 days.
- **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 10 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 11 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 KatanA Markdown Linter MCP server?

KatanA Markdown Linter ships as an MCPB bundle, a single file you download and open in an MCP host that supports MCPB bundles, such as Claude Desktop. The host reads the launch command from the bundle's own manifest, so there is no command to copy. Before opening it, check the file's SHA-256 matches the one the MCP registry declares for it, b148e795d695e744865e8c723e68c18c9fe29fb931eb47dc94c11330f7ba3f94; the commands to do that are on this page. If it does not match, do not open it.

- Download bundle: `https://github.com/HiroyukiFuruno/katana-markdown-linter/releases/download/v0.20.1/katana-markdown-linter-0.20.1.mcpb`
- SHA-256: `b148e795d695e744865e8c723e68c18c9fe29fb931eb47dc94c11330f7ba3f94`

### Verify on macOS / Linux

```bash
echo "b148e795d695e744865e8c723e68c18c9fe29fb931eb47dc94c11330f7ba3f94  katana-markdown-linter-0.20.1.mcpb" | shasum -a 256 -c
```

### Verify on Windows (PowerShell)

```powershell
(Get-FileHash -Algorithm SHA256 .\katana-markdown-linter-0.20.1.mcpb).Hash -eq "b148e795d695e744865e8c723e68c18c9fe29fb931eb47dc94c11330f7ba3f94"
```

## 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.

### 2026-11-02 (score 51, +1)

- [security regression] Provenance: unverified → fail
- [functional improvement] Maintenance: unverified → pass

### 2026-11-01 (score 50, +1)

- [security] Stability: 0.97 → pass

### 2026-10-31 (score 49, −2)

- [security regression] Provenance: fail → unverified
- [functional regression] Maintenance: pass → unverified
- [functional] Stability: pass → 0.97

### 2026-10-29 (score 51, 0)

- [security regression] Stability: pass → unverified
- [security regression] Tool safety: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional regression] Capabilities: pass → unverified
- [functional] First check of Schema quality: unverified
- [functional] Package version: 0.20.0 → 0.20.1

### 2026-10-28 (score 51, 0)

- [security regression] Stability: pass → unverified
- [security regression] Tool safety: pass → unverified
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified
- [functional] Package version: 0.19.6 → 0.20.0

### 2026-10-27 (score 51, 0)

- [functional] Package version: 0.19.5 → 0.19.6

### 2026-10-25 (score 51, +1)

- [security] Stability: 0.97 → pass

### 2026-10-23 (score 50, +1)

No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (10)

### `check_directory` (~51 tokens)

Lint Markdown files under a workspace directory.

Input parameters:

- `config_path` (string|null)
- `locale` (string|null)
- `path` (string, required)
- `respect_gitignore` (boolean|null)

Output parameters:

- `errors` (array)
- `file_count` (integer)
- `files` (array)
- `issue_count` (integer)
- `path` (string)

### `check_file` (~43 tokens)

Lint a Markdown file inside the configured workspace root.

Input parameters:

- `config_path` (string|null)
- `locale` (string|null)
- `path` (string, required)

Output parameters:

- `diagnostics` (array)
- `issue_count` (integer)
- `path` (string)

### `check_text` (~33 tokens)

Lint supplied Markdown text and return structured diagnostics.

Input parameters:

- `content` (string, required)
- `locale` (string|null)

Output parameters:

- `diagnostics` (array)
- `issue_count` (integer)

### `config_validate` (~17 tokens)

Validate a markdownlint-compatible JSON config object.

Output parameters:

- `error_count` (integer)
- `errors` (array)
- `valid` (boolean)

### `fix_file_apply` (~53 tokens)

Apply safe fixes to a workspace file only when apply is true.

Input parameters:

- `apply` (boolean, required)
- `config_path` (string|null)
- `locale` (string|null)
- `path` (string, required)

Output parameters:

- `applied_fixes` (integer)
- `changed` (boolean)
- `path` (string)
- `remaining_diagnostics` (array)
- `remaining_issue_count` (integer)

### `fix_file_preview` (~48 tokens)

Preview safe fixes for a workspace file and return a text diff without writing.

Input parameters:

- `config_path` (string|null)
- `locale` (string|null)
- `path` (string, required)

Output parameters:

- `applied_fixes` (integer)
- `changed` (boolean)
- `diff` (string)
- `path` (string)
- `remaining_diagnostics` (array)
- `remaining_issue_count` (integer)

### `fix_text` (~38 tokens)

Apply safe Markdown fixes to supplied text and return fixed content without writing files.

Input parameters:

- `content` (string, required)
- `locale` (string|null)

Output parameters:

- `applied_fixes` (integer)
- `content` (string)
- `remaining_diagnostics` (array)
- `remaining_issue_count` (integer)

### `rule_doc_get` (~37 tokens)

Get full Markdown documentation for a rule, supporting multiple locales.

Input parameters:

- `locale` (string|null)
- `rule_id` (string, required)

Output parameters:

- `content` (string)
- `locale` (string)
- `rule_id` (string)

### `rule_get` (~35 tokens)

Get metadata for a single markdownlint-compatible rule ID.

Input parameters:

- `locale` (string|null)
- `rule_id` (string, required)

Output parameters:

- `description` (string)
- `docs_url` (string)
- `english_description` (string)
- `fixable` (boolean)
- `id` (string)
- `implemented_check` (boolean)
- `lifecycle` (string)
- `locale` (string)
- `name` (string)

### `rule_list` (~27 tokens)

List markdownlint-compatible rule metadata known to kml.

Input parameters:

- `locale` (string|null)

Output parameters:

- `count` (integer)
- `locale` (string)
- `rules` (array)

## Diagnostics

Captured diagnostic sections: Provenance. The full working is on the page: https://verifymcp.io/servers/hiroyukifuruno-kml/https-github-com-hiroyukifuruno-katana-markdown-linter-releases-download-v0-19-5#diagnostics

## Score history

- 2026-11-05: 51
- 2026-11-04: 51
- 2026-11-03: 51
- 2026-11-02: 51
- 2026-11-01: 50
- 2026-10-31: 49
- 2026-10-30: 51
- 2026-10-29: 51
- 2026-10-28: 51
- 2026-10-27: 51
- 2026-10-26: 51
- 2026-10-25: 51
- 2026-10-24: 50
- 2026-10-23: 50
- 2026-10-22: 49
- 2026-10-21: 49
- 2026-10-20: 48
- 2026-10-19: 48
- 2026-10-18: 48
- 2026-10-17: 47
- 2026-10-16: 47
- 2026-10-15: 46
- 2026-10-14: 46
- 2026-10-13: 45
- 2026-10-12: 45
- 2026-10-10: 44
- 2026-10-07: 42
- 2026-10-04: 41
- 2026-10-03: 41
- 2026-10-02: 37

## Common questions

### What is the KatanA Markdown Linter MCP server?

KatanA Markdown Linter is an MCP server listed in the public MCP registry as io.github.HiroyukiFuruno/kml. Markdown linter, workspace-scoped stdio MCP server, and self-hosted text-only remote MCP server. This page covers its MCPB bundle (https://github.com/HiroyukiFuruno/katana-markdown-linter/releases/download/v0.20.1/katana-markdown-linter-0.20.1.mcpb).

### Is the KatanA Markdown Linter MCP server safe to use?

KatanA Markdown Linter scores 51 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 KatanA Markdown Linter MCP server expose?

KatanA Markdown Linter exposes 10 tools: check_directory, check_file, check_text, config_validate, fix_file_apply, and 5 more. Their descriptions and schemas cost roughly 382 tokens of context every time the server is loaded.

### What licence is the KatanA Markdown Linter MCP server under?

KatanA Markdown Linter 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

- Repository: https://github.com/HiroyukiFuruno/katana-markdown-linter
- Website: https://github.com/HiroyukiFuruno/katana-markdown-linter/blob/main/docs/mcp-server.md
- Changelog RSS feed: https://verifymcp.io/servers/hiroyukifuruno-kml/https-github-com-hiroyukifuruno-katana-markdown-linter-releases-download-v0-19-5.xml
- Changelog JSON feed: https://verifymcp.io/servers/hiroyukifuruno-kml/https-github-com-hiroyukifuruno-katana-markdown-linter-releases-download-v0-19-5.json
- HTML version of this page: https://verifymcp.io/servers/hiroyukifuruno-kml/https-github-com-hiroyukifuruno-katana-markdown-linter-releases-download-v0-19-5