OpenSearch MCP Server

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exploreFieldValues

Analyze and retrieve possible values for a specific field within an OpenSearch index, with options to filter results and limit the number of returned values.

Instructions

Explore possible values for a field in an index

Input Schema

Name	Required	Description	Default
`field`	Yes	Field name to explore
`index`	Yes	Index pattern to search
`maxValues`	No	Maximum number of values to return
`query`	No	Optional query to filter documents	*

Input Schema (JSON Schema)

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": false,
  "properties": {
    "field": {
      "description": "Field name to explore",
      "type": "string"
    },
    "index": {
      "description": "Index pattern to search",
      "type": "string"
    },
    "maxValues": {
      "default": 20,
      "description": "Maximum number of values to return",
      "type": "number"
    },
    "query": {
      "default": "*",
      "description": "Optional query to filter documents",
      "type": "string"
    }
  },
  "required": [
    "index",
    "field"
  ],
  "type": "object"
}

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