# io.github.Digital-Defiance/mcp-debugger (npm · @ai-capabilities-suite/mcp-debugger-server)

Node.js and TypeScript debugging with 25+ tools for AI agents

- Trust score: 70/100 (medium)
- Change this week: +24
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `@ai-capabilities-suite/mcp-debugger-server`: 70/100 (this document), [markdown](https://verifymcp.io/servers/digital-defiance-mcp-debugger/ai-capabilities-suite-mcp-debugger-server.md), [page](https://verifymcp.io/servers/digital-defiance-mcp-debugger/ai-capabilities-suite-mcp-debugger-server)

## Channel facts

- Registry: `npm`
- Package: `@ai-capabilities-suite/mcp-debugger-server`
- Version: `1.1.8`
- 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 2026-08-03.

- **Supply Chain Security**: 87/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (98 of 102), so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (98 of 102), so this covers what we could see, not the whole tree.
- **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 233 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 77/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 1623 tokens (~55/item across 29 items; 29 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**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add digital-defiance-mcp-debugger -- npx -y @ai-capabilities-suite/mcp-debugger-server
```

### Codex

```bash
codex mcp add digital-defiance-mcp-debugger -- npx -y @ai-capabilities-suite/mcp-debugger-server
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "digital-defiance-mcp-debugger": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@ai-capabilities-suite/mcp-debugger-server"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add digital-defiance-mcp-debugger --command npx --arg -y --arg @ai-capabilities-suite/mcp-debugger-server
```

### Hermes

```yaml
mcp_servers:
  digital-defiance-mcp-debugger:
    command: "npx"
    args: ["-y", "@ai-capabilities-suite/mcp-debugger-server"]
```

### Other

```json
{
  "mcpServers": {
    "digital-defiance-mcp-debugger": {
      "command": "npx",
      "args": [
        "-y",
        "@ai-capabilities-suite/mcp-debugger-server"
      ]
    }
  }
}
```

## 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.

### 2026-08-03 (score 70, +4)

- [functional improvement] Stability: unverified → 0.27

### 2026-08-02 (score 66, +46)

- [security regression] Provenance: unverified → fail
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Install scripts: unverified → pass
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional regression] Security disclosure: fail → unverified
- [functional improvement] Schema quality: unverified → excellent
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] License: unverified → pass
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] MCP protocol: unverified → pass
- [functional] Licence: MIT

### 2026-08-01 (score 20, −1)

- [security improvement] Malware scan: unverified → pass
- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified

### 2026-07-31 (score 21, −7)

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

### 2026-07-30 (score 28, −18)

- [security regression] Malware scan: pass → unverified

### 2026-07-27 (score 46)

First indexed and scored.

## MCP tools (29)

### `debugger_start` (~92 tokens)

Start a new debug session with a Node.js process. The process will be paused at the start.

Input parameters:

- `args` (array): Command arguments (e.g., ["test.js"])
- `command` (string, required): The command to execute (e.g., "node", "npm")
- `cwd` (string): Working directory for the process
- `timeout` (number): Timeout in milliseconds (default: 30000)

### `debugger_set_breakpoint` (~86 tokens)

Set a breakpoint at a specific file and line number. Optionally provide a condition.

Input parameters:

- `condition` (string): Optional condition expression (e.g., "x > 10")
- `file` (string, required): The file path (absolute or relative)
- `line` (number, required): The line number (1-indexed)
- `sessionId` (string, required): The debug session ID

### `debugger_continue` (~35 tokens)

Resume execution of a paused debug session until the next breakpoint or program termination.

Input parameters:

- `sessionId` (string, required): The debug session ID

### `debugger_step_over` (~36 tokens)

Execute the current line and pause at the next line in the same scope.

Input parameters:

- `sessionId` (string, required): The debug session ID

### `debugger_step_into` (~36 tokens)

Execute the current line and pause at the first line inside any called function.

Input parameters:

- `sessionId` (string, required): The debug session ID

### `debugger_step_out` (~34 tokens)

Execute until the current function returns and pause at the calling location.

Input parameters:

- `sessionId` (string, required): The debug session ID

### `debugger_pause` (~32 tokens)

Pause a running debug session and return the current execution location.

Input parameters:

- `sessionId` (string, required): The debug session ID

### `debugger_remove_breakpoint` (~43 tokens)

Remove a breakpoint from the debug session.

Input parameters:

- `breakpointId` (string, required): The breakpoint ID to remove
- `sessionId` (string, required): The debug session ID

### `debugger_toggle_breakpoint` (~44 tokens)

Toggle a breakpoint between enabled and disabled states.

Input parameters:

- `breakpointId` (string, required): The breakpoint ID to toggle
- `sessionId` (string, required): The debug session ID

### `debugger_list_breakpoints` (~42 tokens)

Get all breakpoints for a debug session with their file, line, condition, and enabled state.

Input parameters:

- `sessionId` (string, required): The debug session ID

### `debugger_get_local_variables` (~39 tokens)

Get all local variables in the current scope with their names, values, and types.

Input parameters:

- `sessionId` (string, required): The debug session ID

### `debugger_get_global_variables` (~39 tokens)

Get global variables accessible from the current scope with their names, values, and types.

Input parameters:

- `sessionId` (string, required): The debug session ID

### `debugger_inspect_object` (~81 tokens)

Inspect an object by its object reference, returning properties with values. Handles nested objects and arrays up to a specified depth.

Input parameters:

- `maxDepth` (number): Maximum depth to traverse (default: 2)
- `objectId` (string, required): The object ID (from a previous inspection or evaluation)
- `sessionId` (string, required): The debug session ID

### `debugger_add_watch` (~61 tokens)

Add an expression to the watch list. The expression will be evaluated each time the process pauses.

Input parameters:

- `expression` (string, required): The expression to watch (e.g., "x", "obj.prop")
- `sessionId` (string, required): The debug session ID

### `debugger_remove_watch` (~45 tokens)

Remove an expression from the watch list.

Input parameters:

- `sessionId` (string, required): The debug session ID
- `watchId` (string, required): The watch ID (expression) to remove

### `debugger_get_watches` (~39 tokens)

Get all watched expressions with their current values. Reports value changes since the last pause.

Input parameters:

- `sessionId` (string, required): The debug session ID

### `debugger_switch_stack_frame` (~68 tokens)

Switch the execution context to a specific stack frame by index. Frame 0 is the top frame (current location).

Input parameters:

- `frameIndex` (number, required): The frame index (0 = top frame, 1 = caller, etc.)
- `sessionId` (string, required): The debug session ID

### `debugger_stop_session` (~38 tokens)

Stop a debug session, cleanup all resources, and kill the process if still running.

Input parameters:

- `sessionId` (string, required): The debug session ID

### `debugger_inspect` (~61 tokens)

Evaluate a JavaScript expression in the current execution context and return the result with type information.

Input parameters:

- `expression` (string, required): The JavaScript expression to evaluate (e.g., "x + 1")
- `sessionId` (string, required): The debug session ID

### `debugger_get_stack` (~40 tokens)

Get the current call stack with function names, file locations (absolute paths), and line numbers.

Input parameters:

- `sessionId` (string, required): The debug session ID

### `debugger_detect_hang` (~123 tokens)

Run a command and detect if it hangs or enters an infinite loop. Returns hang status, location, and stack trace if hung.

Input parameters:

- `args` (array): Command arguments (e.g., ["test.js"])
- `command` (string, required): The command to execute (e.g., "node", "npm")
- `cwd` (string): Working directory for the process
- `sampleInterval` (number): Sample interval in milliseconds for infinite loop detection (e.g., 100)
- `timeout` (number, required): Timeout in milliseconds (e.g., 5000)

### `debugger_set_logpoint` (~96 tokens)

Set a logpoint that logs a message without pausing execution. Use {variable} syntax for interpolation.

Input parameters:

- `file` (string, required): The file path (absolute or relative)
- `line` (number, required): The line number (1-indexed)
- `logMessage` (string, required): Log message template with {variable} interpolation (e.g., "Value is {x}")
- `sessionId` (string, required): The debug session ID

### `debugger_set_exception_breakpoint` (~86 tokens)

Set an exception breakpoint to pause on caught and/or uncaught exceptions.

Input parameters:

- `breakOnCaught` (boolean, required): Whether to break on caught exceptions
- `breakOnUncaught` (boolean, required): Whether to break on uncaught exceptions
- `exceptionFilter` (string): Optional regex pattern to filter exceptions by type/message
- `sessionId` (string, required): The debug session ID

### `debugger_set_function_breakpoint` (~54 tokens)

Set a function breakpoint to pause when a function with the given name is called.

Input parameters:

- `functionName` (string, required): Function name or regex pattern to match
- `sessionId` (string, required): The debug session ID

### `debugger_set_hit_count_condition` (~91 tokens)

Set a hit count condition for a breakpoint. The breakpoint will only pause when the condition is met.

Input parameters:

- `breakpointId` (string, required): The breakpoint ID
- `operator` (string, required): Hit count operator (==, >, >=, <, <=, % for modulo)
- `sessionId` (string, required): The debug session ID
- `value` (number, required): Hit count value to compare against

### `debugger_start_cpu_profile` (~39 tokens)

Start CPU profiling for a debug session. Collects CPU profile data for performance analysis.

Input parameters:

- `sessionId` (string, required): The debug session ID

### `debugger_stop_cpu_profile` (~35 tokens)

Stop CPU profiling and return the profile data with bottleneck analysis.

Input parameters:

- `sessionId` (string, required): The debug session ID

### `debugger_take_heap_snapshot` (~35 tokens)

Take a heap snapshot for memory analysis. Returns memory usage report.

Input parameters:

- `sessionId` (string, required): The debug session ID

### `debugger_get_performance_metrics` (~73 tokens)

Get performance metrics including current memory usage, performance timeline, and leak detection.

Input parameters:

- `includeLeakDetection` (boolean): Whether to run memory leak detection (takes 10 seconds)
- `includePerformanceTimeline` (boolean): Whether to include performance timeline data
- `sessionId` (string, required): The debug session ID

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/digital-defiance-mcp-debugger/ai-capabilities-suite-mcp-debugger-server#diagnostics

## Score history

- 2026-08-03: 70
- 2026-08-02: 66
- 2026-08-01: 20
- 2026-07-31: 21
- 2026-07-30: 28
- 2026-07-28: 46
- 2026-07-27: 46

## Links

- npm package: https://www.npmjs.com/package/@ai-capabilities-suite/mcp-debugger-server
- Socket report: https://socket.dev/npm/package/@ai-capabilities-suite/mcp-debugger-server
- Repository: https://github.com/Digital-Defiance/mcp-debugger-server
- Changelog RSS feed: https://verifymcp.io/servers/digital-defiance-mcp-debugger/ai-capabilities-suite-mcp-debugger-server/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/digital-defiance-mcp-debugger/ai-capabilities-suite-mcp-debugger-server/changelog.json
- HTML version of this page: https://verifymcp.io/servers/digital-defiance-mcp-debugger/ai-capabilities-suite-mcp-debugger-server