# mcpspan (npm · mcpspan-mcp)

Ask your agent about your MCP servers: failing tools, releases, clients, sessions.

- Trust score: 85/100 (high trust)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `api.mcpspan.com`: 37/100, [markdown](https://verifymcp.io/servers/mcpspan-mcpspan/api.md), [page](https://verifymcp.io/servers/mcpspan-mcpspan/api)
- npm · `mcpspan-mcp`: 85/100 (this document), [markdown](https://verifymcp.io/servers/mcpspan-mcpspan/mcpspan-mcp.md), [page](https://verifymcp.io/servers/mcpspan-mcpspan/mcpspan-mcp)

## Channel facts

- Registry: `npm`
- Package: `mcpspan-mcp`
- Version: `0.13.0`
- 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 2026-11-05.

- **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.
  - 0 of 3 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to mcpspan/mcpspan).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 8 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 65/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1886 tokens (~171/item across 11 items; 11 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 40/100
  - Stability observed for 12 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.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 11 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 12 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).

## Install

### How do I install the mcpspan MCP server?

mcpspan runs locally as an npm package, launched with npx -y mcpspan-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 mcpspan-mcpspan -- npx -y mcpspan-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "mcpspan-mcpspan": {
      "command": "npx",
      "args": [
        "-y",
        "mcpspan-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "mcpspan-mcpspan": {
      "command": "npx",
      "args": [
        "-y",
        "mcpspan-mcp"
      ]
    }
  }
}
```

### Codex

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

### opencode

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

### OpenClaw

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

### Hermes

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

### Netclaw

```json
{
  "McpServers": {
    "mcpspan-mcpspan": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "mcpspan-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add mcpspan-mcpspan -t stdio -c npx -a -y mcpspan-mcp
```

### Other

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

### 2026-11-05 (score 85, +1)

- [functional regression] Security disclosure: fail → unverified

### 2026-11-03 (score 84, +1)

No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-01 (score 83, +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.

### 2026-10-30 (score 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-28 (score 81, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-10-27 (score 66, +1)

- [security improvement] Malware scan: unverified → pass
- [functional] Package version: 0.12.0 → 0.13.0

### 2026-10-26 (score 65, −14)

- [security regression] Malware scan: pass → unverified
- [functional improvement] Stability: unverified → 0.07
- [functional] Package version: 0.11.0 → 0.12.0

### 2026-10-25 (score 79, +26)

- [security improvement] Malware scan: unverified → pass
- [security improvement] Known CVEs: unverified → pass
- [functional improvement] Dependency health: unverified → 1.00

## MCP tools (11)

### `list_servers` (~25 tokens)

List servers

The MCP servers this mcpspan account reports on, with their names and ids.

### `get_overview` (~173 tokens)

Overview

Calls, failures, error rate, response times (median and 95th percentile) and the share of each client, for one server over a window.

Input parameters:

- `client` (string): Only calls from this client type, as list_clients names them, such as claude-code or cursor.
- `days` (integer): How many days back to look, ending now. 7 when left out. Ignored when from is given.
- `from` (string): Start of the window, as an ISO 8601 date or time. Overrides days.
- `server` (string): The MCP server to ask about, by name or id. Leave out when the account has only one.
- `to` (string): End of the window, as an ISO 8601 date or time. Now when left out.

### `list_tools` (~202 tokens)

List tools

A server's tools ranked by calls, errors, response time or name, each with its calls, errors, error rate and response times.

Input parameters:

- `client` (string): Only calls from this client type, as list_clients names them, such as claude-code or cursor.
- `days` (integer): How many days back to look, ending now. 7 when left out. Ignored when from is given.
- `from` (string): Start of the window, as an ISO 8601 date or time. Overrides days.
- `limit` (integer): How many to return. 20 when left out.
- `server` (string): The MCP server to ask about, by name or id. Leave out when the account has only one.
- `sort` (string): How to rank them. calls when left out.
- `to` (string): End of the window, as an ISO 8601 date or time. Now when left out.

### `get_tool` (~188 tokens)

Tool details

Everything recorded about one tool: why its calls failed and the commonest error messages, which arguments the server refused, its parameters, how large its answers are, when its definition changed, how often agents repeated a call, and which call came right before the ones that repeated or failed.

Input parameters:

- `days` (integer): How many days back to look, ending now. 7 when left out. Ignored when from is given.
- `from` (string): Start of the window, as an ISO 8601 date or time. Overrides days.
- `server` (string): The MCP server to ask about, by name or id. Leave out when the account has only one.
- `to` (string): End of the window, as an ISO 8601 date or time. Now when left out.
- `tool` (string, required): The tool's name, as list_tools gives it.

### `list_errors` (~222 tokens)

List failed calls

The most recent failed calls, newest first: which tool, which client, when, what kind of failure (a handler that threw, a tool that answered with an error, refused arguments, an unknown tool) and the error message when the server records them.

Input parameters:

- `client` (string): Only calls from this client type, as list_clients names them, such as claude-code or cursor.
- `days` (integer): How many days back to look, ending now. 7 when left out. Ignored when from is given.
- `from` (string): Start of the window, as an ISO 8601 date or time. Overrides days.
- `limit` (integer): How many to return. 20 when left out.
- `server` (string): The MCP server to ask about, by name or id. Leave out when the account has only one.
- `to` (string): End of the window, as an ISO 8601 date or time. Now when left out.
- `tool` (string): Only failures of this tool.

### `list_unknown_tools` (~148 tokens)

List unknown tools

Tools that agents asked for but the server does not have: how often, which clients, the closest tool the server does have, and what the agent did next.

Input parameters:

- `days` (integer): How many days back to look, ending now. 7 when left out. Ignored when from is given.
- `from` (string): Start of the window, as an ISO 8601 date or time. Overrides days.
- `server` (string): The MCP server to ask about, by name or id. Leave out when the account has only one.
- `to` (string): End of the window, as an ISO 8601 date or time. Now when left out.

### `list_clients` (~147 tokens)

List clients

The clients that called the server (Claude, Claude Code, Cursor, VS Code, ChatGPT and others), each with its calls, error rate and response times.

Input parameters:

- `days` (integer): How many days back to look, ending now. 7 when left out. Ignored when from is given.
- `from` (string): Start of the window, as an ISO 8601 date or time. Overrides days.
- `server` (string): The MCP server to ask about, by name or id. Leave out when the account has only one.
- `to` (string): End of the window, as an ISO 8601 date or time. Now when left out.

### `compare_versions` (~178 tokens)

Compare versions

The server's versions in the window, newest first, each with when it was first seen, its calls, error rate and response times: how a release compares with the one before.

Input parameters:

- `client` (string): Only calls from this client type, as list_clients names them, such as claude-code or cursor.
- `days` (integer): How many days back to look, ending now. 7 when left out. Ignored when from is given.
- `from` (string): Start of the window, as an ISO 8601 date or time. Overrides days.
- `server` (string): The MCP server to ask about, by name or id. Leave out when the account has only one.
- `to` (string): End of the window, as an ISO 8601 date or time. Now when left out.

### `get_tool_listing` (~188 tokens)

What agents are shown

Every tool as agents were shown it when they listed the tools: in how many sessions, how many of those called it, and how large its definition is. Finds tools agents see but never use, and definitions that cost context.

Input parameters:

- `client` (string): Only calls from this client type, as list_clients names them, such as claude-code or cursor.
- `days` (integer): How many days back to look, ending now. 7 when left out. Ignored when from is given.
- `from` (string): Start of the window, as an ISO 8601 date or time. Overrides days.
- `server` (string): The MCP server to ask about, by name or id. Leave out when the account has only one.
- `to` (string): End of the window, as an ISO 8601 date or time. Now when left out.

### `list_sessions` (~215 tokens)

List sessions

Recent sessions (one connection each), newest first, with their calls, failures, tools used and calls an agent repeated with the same arguments.

Input parameters:

- `client` (string): Only calls from this client type, as list_clients names them, such as claude-code or cursor.
- `days` (integer): How many days back to look, ending now. 7 when left out. Ignored when from is given.
- `from` (string): Start of the window, as an ISO 8601 date or time. Overrides days.
- `limit` (integer): How many to return. 20 when left out.
- `server` (string): The MCP server to ask about, by name or id. Leave out when the account has only one.
- `to` (string): End of the window, as an ISO 8601 date or time. Now when left out.
- `tool` (string): Only sessions that called this tool.
- `with` (string): Only sessions with failures, or with repeated calls.

### `get_session` (~153 tokens)

Session

One session's calls in the order the agent made them, with each call's outcome and error.

Input parameters:

- `days` (integer): How many days back to look, ending now. 7 when left out. Ignored when from is given.
- `from` (string): Start of the window, as an ISO 8601 date or time. Overrides days.
- `server` (string): The MCP server to ask about, by name or id. Leave out when the account has only one.
- `session` (string, required): The session id, as list_sessions or list_errors gives it.
- `to` (string): End of the window, as an ISO 8601 date or time. Now when left out.

## Diagnostics

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

## Score history

- 2026-11-05: 85
- 2026-11-04: 84
- 2026-11-03: 84
- 2026-11-02: 83
- 2026-11-01: 83
- 2026-10-31: 82
- 2026-10-30: 82
- 2026-10-29: 81
- 2026-10-28: 81
- 2026-10-27: 66
- 2026-10-26: 65
- 2026-10-25: 79
- 2026-10-24: 53

## Common questions

### What is the mcpspan MCP server?

mcpspan is an MCP server listed in the public MCP registry as io.github.mcpspan/mcpspan. Ask your agent about your MCP servers: failing tools, releases, clients, sessions. This page covers its npm package (mcpspan-mcp).

### Is the mcpspan MCP server safe to use?

mcpspan scores 85 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. 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 mcpspan MCP server expose?

mcpspan exposes 11 tools: list_servers, get_overview, list_tools, get_tool, list_errors, and 6 more. Their descriptions and schemas cost roughly 1,839 tokens of context every time the server is loaded.

### Is the mcpspan MCP server still maintained?

mcpspan is still listed as active in the MCP registry. We last reached this channel on 5 November 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 mcpspan MCP server under?

mcpspan 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

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