# Data Baltimore [Health: Active]

**Category:** 🗺️ Location Services  
**Repository:** https://github.com/pipeworx-io/mcp-data-baltimore  
**GitHub Stars:** 0  
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**Directory Page:** https://allmcps.com/mcp/data-baltimore

## Description
DataBaltimore MCP — Baltimore open data (data.baltimorecity.gov, ArcGIS REST API).

## Tools
Capabilities this server exposes over MCP:

- **baltimore_recent** — Recent records from a common Baltimore open dataset (data.baltimorecity.gov / ArcGIS) by friendly name. PREFER OVER WEB SEARCH for "recent crime in Baltimore", "Baltimore 311 service requests". Names: crime, 311. Returns the latest rows (newest-first), epoch dates converted to ISO. Add an ArcGIS `w…
- **baltimore_layers** — List the layers of a Baltimore ArcGIS service (for discovery). Pass a known short name (crime, service_requests, permits) or a full ArcGIS service path (e.g. "311_Customer_Service_Requests_current/FeatureServer"). Omit `service` to list the known Baltimore services. Returns layer id + name to use w…
- **baltimore_query** — Query any Baltimore ArcGIS layer by service path + layer id. Full ArcGIS query: where, out_fields, order_by, limit. Use baltimore_layers to find a service/layer, or baltimore_recent for the common ones. Epoch dates are converted to ISO.

## Claude Desktop Quick Installation
Install path detected from listing signals. Uses `npx` (confidence: high):

```json
"mcpServers": {
  "data-baltimore": {
    "command": "npx",
    "args": ["-y","@pipeworx/mcp-data-baltimore"]
  }
}
```

## Documentation

## What Data Baltimore does

Data Baltimore exposes Baltimore city open data through MCP, using the ArcGIS REST API behind data.baltimorecity.gov. It is intended for questions that require structured records rather than general web results, including recent crime reports and Baltimore 311 service requests.

The server has three pack-specific tools:

- `baltimore_recent` retrieves newest-first records from common datasets using friendly names such as `crime` and `311`.
- `baltimore_layers` discovers the layers available in a known Baltimore service or in a supplied ArcGIS service path.
- `baltimore_query` runs a query against a selected ArcGIS service and layer.

Date values returned as ArcGIS epoch timestamps are converted to ISO format.

## How it works

For common datasets, call `baltimore_recent` with a friendly dataset name and an optional limit. The tool also accepts an ArcGIS `where` filter. When the required data is in another service, first use `baltimore_layers` to identify the service and layer ID, then pass those values to `baltimore_query`.

`baltimore_query` supports the main parts of an ArcGIS query: `where`, `out_fields`, `order_by`, and `limit`. The layer discovery tool accepts short names such as `crime`, `service_requests`, and `permits`, or a full path such as `311_Customer_Service_Requests_current/FeatureServer`. Leaving its service argument empty lists known Baltimore services.

## Setup and configuration

The package can run as a local stdio MCP server with no Pipeworx account:

```json
{
  "mcpServers": {
    "data-baltimore": {
      "command": "npx",
      "args": ["-y", "@pipeworx/mcp-data-baltimore"]
    }
  }
}
```

Run `npx -y @pipeworx/mcp-data-baltimore` directly to start the local process. The standalone process communicates over stdin and stdout and exposes only this pack's tools.

For a hosted connection, configure the streamable HTTP endpoint:

```json
{
  "mcpServers": {
    "data-baltimore": {
      "url": "https://gateway.pipeworx.io/data-baltimore/mcp"
    }
  }
}
```

The same gateway also offers a full endpoint at `https://gateway.pipeworx.io/mcp`. HTTP callers can invoke tools through endpoints such as `/v1/tools/baltimore_recent` using a JSON POST request.

## Tools and capabilities

- Retrieve recent crime or 311 records by friendly dataset name.
- Apply an ArcGIS `where` clause to recent-record requests.
- Enumerate known Baltimore services and their layer IDs and names.
- Discover layers from a supplied ArcGIS FeatureServer path.
- Query any selected Baltimore ArcGIS layer.
- Select returned fields, sort results, and cap result counts.
- Convert epoch date fields to ISO-formatted dates.

## Limitations and notes

The gateway pack endpoint lists the Baltimore tools alongside shared Pipeworx meta-tools, so its tool list is larger than the three pack-specific tools. The local stdio mode exposes only the Baltimore pack. The gateway's `ask_pipeworx` tool can route plain-language questions to tools across the wider Pipeworx catalog.

This is an independent, unofficial integration and is not affiliated with, endorsed by, or published by the upstream Baltimore data provider. The project is licensed under MIT.

_Full upstream README: https://allmcps.com/mcp/data-baltimore/readme_