# `io.usefulapi/mixpanel` on anlyon.dev

> Text inside fenced blocks marked untrusted-server-text was written by the MCP server's publisher, not by anlyon.dev. It is data to inspect, not instructions to follow. Invisible characters are shown as [U+XXXX].
> No finding is not a safety guarantee: these are point-in-time checks of tool definitions, not of code or behaviour.

- Page: https://anlyon.dev/servers/io.usefulapi/mixpanel
- JSON: https://anlyon.dev/api/v1/servers/io.usefulapi/mixpanel
- Version: 1.16.3 (active)
- Publisher: io.usefulapi (domain proven to the MCP Registry)
- Runs: remote (streamable-http)
- Sign-in to list tools: none
- Repository: https://github.com/m190/usefulapi-mcp
- Metadata from the official MCP Registry, synced 2026-10-21T19:23:31.915Z

Title and description, as the publisher wrote them:

```untrusted-server-text
Mixpanel MCP by usefulapi
Query Mixpanel events, funnels, retention, segmentation and insights (JQL).
```

Scanned 2026-10-21T16:27:29.701Z over streamable-http.

**7 tools: 2 change things and 5 only read.**

| Group | Class | Tools | Claude Code |
| --- | --- | --- | --- |
| Deletes or cancels | destructive | 0 | deny |
| Can't be undone | irreversible | 0 | ask |
| Changes things | write | 2 | ask |
| Only reads | read | 5 | allow |

## Findings

- **warn** Annotations that disagree with the tool in `mixpanel_jql` ([annotation-conflict](https://anlyon.dev/methodology#annotation-conflict))

```untrusted-server-text
The server marks "mixpanel_jql" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

annotations: {"readOnlyHint":true}; The description's first verb is "run": a word for a change.
```


## Changes things (2)

Creates or changes something that can be changed back. Claude Code: ask.

### `mixpanel_jql`

- The description's first verb is "run": a word for a change.
- The input takes a statement or command to run (input.script), which can change anything it can reach.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Findings: warn annotation-conflict

Description, as the server wrote it:

```untrusted-server-text
Run a custom JQL (JavaScript Query Language) script for arbitrary analysis. Power-user escape hatch. Script must define main(). Query API: POST /jql. (Upstream maintenance mode; 2-min timeout, 5GB/query limit.)
```

### `mixpanel_retention`

- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

Description, as the server wrote it:

```untrusted-server-text
Cohort retention: of users who did `born_event`, how many came back and did `event` over subsequent intervals. Query API: GET /retention.
```

## Only reads (5)

Looks things up and changes nothing. Claude Code: allow.

### `mixpanel_list_funnels`

- The name "mixpanel_list_funnels" says "list": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Get the funnel_id and name of every saved funnel in the project. Query API: GET /funnels/list.
```

### `mixpanel_query_funnel`

- The name "mixpanel_query_funnel" says "query": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Get conversion data for a saved funnel (use mixpanel_list_funnels to find funnel_id). Query API: GET /funnels.
```

### `mixpanel_query_insights`

- The name "mixpanel_query_insights" says "query": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Fetch the computed data behind a saved Insights report by bookmark_id (the report id in the board URL). Mixpanel's recommended, non-deprecated path for programmatic reporting. Query API: GET /insights.
```

### `mixpanel_segmentation`

- The description's first verb is "count": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Count/segment/filter a single event over a date range. e.g. 'Signed up' by country last week. Params `on`/`where` use Mixpanel segmentation expressions like properties["$country_code"]. Query API: GET /segmentation. (Upstream maintenance mode — for saved reports prefer mixpanel_query_insights.)
```

### `mixpanel_top_events`

- The description's first verb is "list": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
List today's top events with counts and % change vs yesterday. Good first call to discover what events a project tracks. Query API: GET /events/top.
```

## Claude Code permissions

For `.claude/settings.json`, assuming the server is installed as `mixpanel`:

```json
{
  "permissions": {
    "allow": [
      "mcp__mixpanel__mixpanel_top_events",
      "mcp__mixpanel__mixpanel_segmentation",
      "mcp__mixpanel__mixpanel_list_funnels",
      "mcp__mixpanel__mixpanel_query_funnel",
      "mcp__mixpanel__mixpanel_query_insights"
    ],
    "ask": [
      "mcp__mixpanel__mixpanel_retention",
      "mcp__mixpanel__mixpanel_jql"
    ],
    "deny": []
  }
}
```