# io.github.calllint/calllint (npm · calllint-mcp)

Static preflight safety gate for MCP servers — scan configs before you run them. Never executes.

- Trust score: 79/100 (medium)
- Change this week: −13
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-04

## Components

- npm · `calllint-mcp`: 79/100 (this document), [markdown](https://verifymcp.io/servers/calllint-calllint/calllint-mcp.md), [page](https://verifymcp.io/servers/calllint-calllint/calllint-mcp)

## Channel facts

- Registry: `npm`
- Package: `calllint-mcp`
- Version: `0.2.0`
- 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 2026-08-04.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to calllint/calllint).
  - Clear OSI-approved license (Apache-2.0).
  - Actively maintained (last published 21 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 71/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 481 tokens (~80/item across 6 items; 6 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**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 20/100
  - Spec-recency check failed: implements MCP spec 2024-11-05; the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add calllint-calllint -- npx -y calllint-mcp
```

### Codex

```bash
codex mcp add calllint-calllint -- npx -y calllint-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "calllint-calllint": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "calllint-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add calllint-calllint --command npx --arg -y --arg calllint-mcp
```

### Hermes

```yaml
mcp_servers:
  calllint-calllint:
    command: "npx"
    args: ["-y", "calllint-mcp"]
```

### Other

```json
{
  "mcpServers": {
    "calllint-calllint": {
      "command": "npx",
      "args": [
        "-y",
        "calllint-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.

### 2026-08-04 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-02 (score 78, +18)

- [security improvement] Malware scan: unverified → pass
- [functional improvement] Stability: unverified → 0.20

### 2026-08-01 (score 60, −14)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-31 (score 74, −18)

- [security regression] Malware scan: pass → unverified

### 2026-07-27 (score 92, +33)

- [functional improvement] Tool coverage: unverified → 100
- [functional] First check of Schema quality: fail
- [functional] First check of Tool coverage: 100
- [functional] First check of Schema quality: good
- [functional] First check of Schema quality: pass

### 2026-07-26 (score 59)

First indexed and scored.

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

## MCP tools (6)

### `scan_mcp_config_path` (~50 tokens)

Scan an MCP config file on disk and return the full ScanReport (verdict + evidence). Static; never executes the server.

Input parameters:

- `path` (string, required): Path to the MCP config file.

### `scan_mcp_config_json` (~70 tokens)

Scan MCP config JSON text and return compact decisions (one per server: verdict, fingerprint hash, reason codes). Static; never executes the server.

Input parameters:

- `json` (string, required): Raw MCP config JSON.
- `surface` (string): Optional surface label (e.g. .cursor/mcp.json).

### `verify_baseline` (~95 tokens)

Compare a fresh scan of MCP config JSON against a recorded baseline and report drift / rug-pull signals. Static; never executes the server.

Input parameters:

- `baseline` (string): Optional baseline JSON (calllint.baseline.v0). If omitted, a baseline is built from `json` and returned for first-time approval.
- `json` (string, required): Current MCP config JSON to verify.
- `surface` (string): Optional surface label.

### `explain_finding` (~66 tokens)

Return the full evidence-backed explanation for the servers in an MCP config JSON (why each verdict was reached).

Input parameters:

- `json` (string, required): MCP config JSON.
- `server` (string): Optional server name to explain (default: all).
- `surface` (string): Optional surface label.

### `generate_agent_rule` (~79 tokens)

Generate the CallLint agent-safety rule text for a host (e.g. claude, cursor, copilot, agents). Paste into the host's rules file.

Input parameters:

- `host` (string, required): Target host. One of: claude, agents, cursor, copilot, codex, gemini, windsurf, cline, command.

### `generate_ci_gate_snippet` (~76 tokens)

Generate a GitHub Actions workflow (.github/workflows/calllint.yml) that gates a repo on its agent-tool surface. mode=drift fails on approved-state drift; mode=scan-all is report-only.

Input parameters:

- `mode` (string): CI gate mode. One of: drift, scan-all. Default: drift.

## Diagnostics

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

## Score history

- 2026-08-04: 79
- 2026-08-03: 78
- 2026-08-02: 78
- 2026-08-01: 60
- 2026-07-31: 74
- 2026-07-29: 92
- 2026-07-28: 92
- 2026-07-27: 92
- 2026-07-26: 59

## Links

- npm package: https://www.npmjs.com/package/calllint-mcp
- Socket report: https://socket.dev/npm/package/calllint-mcp
- Repository: https://github.com/calllint/calllint
- Website: https://calllint.com/
- Changelog RSS feed: https://verifymcp.io/servers/calllint-calllint/calllint-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/calllint-calllint/calllint-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/calllint-calllint/calllint-mcp