OSM Tag Overview: Usage of key=value (Taginfo)

osmtaginfo/tag-overview

Overview of one OpenStreetMap tag, a key and value pair such as amenity=cafe: how many OSM objects carry it in total and as nodes, ways and relations, which languages have a wiki page, how many projects use it and its wiki description by language. A pair nobody uses returns zero counts. Statistics are rebuilt from the OSM database about once a day. Data from OpenStreetMap contributors (ODbL), via OSM Taginfo; served by Eden Engine; not an official OpenStreetMap product.

activeper callv1

Price

$0.0026 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $0.50.

Data source

OpenStreetMap

Data © OpenStreetMap contributors, available under the Open Database Licence (ODbL); statistics from OSM Taginfo (taginfo.openstreetmap.org). See openstreetmap.org/copyright. Served by Eden Engine; not an official OpenStreetMap product.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

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agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "osmtaginfo/tag-overview" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "osmtaginfo/tag-overview" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "osmtaginfo/tag-overview", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "osmtaginfo/tag-overview", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

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Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0026

Updated: Oct 24, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "key",
    "value"
  ],
  "properties": {
    "key": {
      "type": "string",
      "maxLength": 100,
      "minLength": 1,
      "description": "OSM tag key, for example 'amenity', 'highway' or 'cuisine'."
    },
    "value": {
      "type": "string",
      "maxLength": 255,
      "minLength": 1,
      "description": "OSM tag value, for example 'cafe' or 'bakery'."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "data"
  ],
  "properties": {
    "url": {
      "type": "string",
      "description": "The upstream request URL."
    },
    "data": {
      "type": "object",
      "required": [
        "key",
        "value",
        "counts"
      ],
      "properties": {
        "key": {
          "type": "string"
        },
        "value": {
          "type": "string"
        },
        "counts": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "type": {
                "type": "string"
              },
              "count": {
                "type": "integer"
              },
              "values": {
                "type": "integer",
                "description": "Number of distinct values (key overview only)."
              },
              "count_fraction": {
                "type": "number"
              }
            },
            "additionalProperties": true
          },
          "description": "Usage counts split by object type: all, nodes, ways and relations."
        },
        "has_map": {
          "type": "boolean"
        },
        "projects": {
          "type": "integer"
        },
        "wiki_pages": {
          "type": "array",
          "items": {
            "type": "object",
            "additionalProperties": true
          },
          "description": "Languages with a wiki page for the tag."
        },
        "description": {
          "type": "object",
          "description": "Wiki description by language code.",
          "additionalProperties": true
        }
      },
      "additionalProperties": true
    },
    "total": {
      "type": "integer",
      "description": "Total number of results."
    },
    "data_until": {
      "type": "string",
      "description": "UTC time of the newest OSM change included in the statistics."
    }
  },
  "additionalProperties": true
}