wqp_list_characteristics
Pack: water-quality-portal · Endpoint: https://gateway.pipeworx.io/water-quality-portal/mcp
No MCP client? Call it directly: GET https://gateway.pipeworx.io/v1/tools/wqp_list_characteristics for the schema, then POST the same URL with its arguments for the data.
Look up the exact controlled-vocabulary spelling the Water Quality Portal expects for an analyte, site type, organization, state or county code. Call this FIRST when a name might not match — “nitrate” is not a valid value, “Nitrate” is. Sourced from the USGS/EPA Water Quality Portal code service.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
domain | string | no | Which vocabulary: “characteristicname” (default), “characteristictype”, “sitetype”, “samplemedia”, “statecode”, “countycode”, “organization”, “providers” |
text | string | no | Substring to match, e.g. “nitr”, “lead”, “Stream” |
limit | number | no | Max codes to return (default 50, max 500) |
Example call
Arguments
{
"domain": "characteristicname",
"text": "nitr",
"limit": 10
}curl
curl -X POST https://gateway.pipeworx.io/water-quality-portal/mcp \
-H 'Content-Type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"wqp_list_characteristics","arguments":{"domain":"characteristicname","text":"nitr","limit":10}}}'TypeScript (@pipeworx/sdk)
import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();
const result = await pipeworx.call('wqp_list_characteristics', {
"domain": "characteristicname",
"text": "nitr",
"limit": 10
});Connect
Add this to your MCP client config, or use one-click install buttons:
{
"mcpServers": {
"water-quality-portal": {
"url": "https://gateway.pipeworx.io/water-quality-portal/mcp"
}
}
}See Getting Started for client-specific install steps.