# `io.usefulapi/census` 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/census
- JSON: https://anlyon.dev/api/v1/servers/io.usefulapi/census
- 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 2026-10-21T19:23:16.065Z

Title and description, as the publisher wrote them:

```untrusted-server-text
Census MCP by usefulapi
List reverse-ETL sources, destinations, models, syncs and runs; trigger syncs into SaaS tools.
```

Scanned 2026-10-21T19:37:24.172Z over streamable-http.

**13 tools: 1 can delete or cancel things and 12 only read.**

| Group | Class | Tools | Claude Code |
| --- | --- | --- | --- |
| Deletes or cancels | destructive | 1 | deny |
| Can't be undone | irreversible | 0 | ask |
| Changes things | write | 0 | ask |
| Only reads | read | 12 | allow |

## Findings

No check matched anything in these tool definitions.


## Deletes or cancels (1)

Removes, cancels or revokes something. Claude Code: deny.

### `census_trigger_sync`

- The name "census_trigger_sync" says "trigger": a word for a change.
- The server marks it destructive (destructiveHint: true).

Description, as the server wrote it:

```untrusted-server-text
TRIGGERS a sync run for the given sync id — this KICKS OFF a live data sync that writes records into the connected destination SaaS tool. Set force_full_sync=true to re-sync all rows instead of just changes. Census: POST /syncs/{id}/trigger.
```

## Only reads (12)

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

### `census_get_destination`

- The name "census_get_destination" says "get": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Get a single destination connection by id. Census: GET /destinations/{id}.
```

### `census_get_model`

- The name "census_get_model" says "get": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Get a single model by id, including its SQL/query. Census: GET /models/{id}.
```

### `census_get_source`

- The name "census_get_source" says "get": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Get a single source connection by id. Census: GET /sources/{id}.
```

### `census_get_sync`

- The name "census_get_sync" says "get": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Get a single sync's full configuration by id. Census: GET /syncs/{id}.
```

### `census_get_sync_run`

- The name "census_get_sync_run" says "get": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Get a single sync run by id — status, counts, errors. Census: GET /sync_runs/{id}.
```

### `census_list_destinations`

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

Description, as the server wrote it:

```untrusted-server-text
List configured destination connections (SaaS apps data is synced INTO, e.g. Salesforce, HubSpot, Marketo). Census: GET /destinations.
```

### `census_list_models`

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

Description, as the server wrote it:

```untrusted-server-text
List SQL models / datasets defined in the workspace (the queries that produce rows to sync). Census: GET /models.
```

### `census_list_segments`

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

Description, as the server wrote it:

```untrusted-server-text
List audience segments defined in the workspace. Census: GET /segments.
```

### `census_list_sources`

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

Description, as the server wrote it:

```untrusted-server-text
List configured data warehouse sources (Snowflake, BigQuery, Redshift, Databricks, etc.). Census: GET /sources.
```

### `census_list_sync_runs`

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

Description, as the server wrote it:

```untrusted-server-text
List sync run history (each run's status, records processed, timing). Filter by sync_id. Census: GET /sync_runs.
```

### `census_list_syncs`

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

Description, as the server wrote it:

```untrusted-server-text
List syncs (a sync maps a source model to a destination object and keeps them in sync). Returns id, label, status, source_attributes, destination_attributes. Census: GET /syncs.
```

### `census_list_workspaces`

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

Description, as the server wrote it:

```untrusted-server-text
List workspaces in the organization (note: usually requires an organization-level token). Census: GET /workspaces.
```

## Claude Code permissions

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

```json
{
  "permissions": {
    "allow": [
      "mcp__census__census_list_sources",
      "mcp__census__census_get_source",
      "mcp__census__census_list_destinations",
      "mcp__census__census_get_destination",
      "mcp__census__census_list_models",
      "mcp__census__census_get_model",
      "mcp__census__census_list_syncs",
      "mcp__census__census_get_sync",
      "mcp__census__census_list_sync_runs",
      "mcp__census__census_get_sync_run",
      "mcp__census__census_list_segments",
      "mcp__census__census_list_workspaces"
    ],
    "ask": [],
    "deny": [
      "mcp__census__census_trigger_sync"
    ]
  }
}
```