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Ground Elevation at a Longitude and Latitude (IGN Géoplateforme)

geopf/elevation-point

Ground elevation, in metres, at one longitude and latitude, from the Géoplateforme (IGN) altimetry service and its ign_rge_alti_wld resource. Returns the point echoed back with its elevation `z` (-99999 means no elevation data at that point, for example outside the coverage) and an `acc` text describing the accuracy source. Longitude and latitude are decimal degrees (WGS 84). Data from the Géoplateforme, Licence Ouverte 2.0 (Etalab), or the dataset's own licence where it states one, passed through unmodified and served by Eden Engine; not an official IGN 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 $5.

Data source

IGN Géoplateforme

Source: IGN / Géoplateforme (cartes.gouv.fr), Licence Ouverte 2.0 (Etalab); where a dataset states another licence, that licence applies. Served by Eden Engine; not an official IGN 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.

Connect once and your AI can find and run this tool, and any other it needs.

Install itCreate an account
agent
// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "geopf/elevation-point" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "geopf/elevation-point" })

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

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

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Pricing

Every charge this tool can incur.

ChargePrice
Per call
$0.0026
Updated
Oct 20, 2026

Input and output schemas

Input schema
input_schema.json
{
  "type": "object",
  "required": [
    "lon",
    "lat"
  ],
  "properties": {
    "lat": {
      "type": "number",
      "maximum": 90,
      "minimum": -90,
      "description": "Latitude in decimal degrees, -90 to 90, for example 48.85 for Paris."
    },
    "lon": {
      "type": "number",
      "maximum": 180,
      "minimum": -180,
      "description": "Longitude in decimal degrees, -180 to 180, for example 2.35 for Paris."
    }
  },
  "additionalProperties": false
}
Output schema
output_schema.json
{
  "type": "object",
  "required": [
    "elevations"
  ],
  "properties": {
    "elevations": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "z": {
            "type": "number",
            "description": "Ground elevation in metres. -99999 is the service's no-data value (a point outside the coverage)."
          },
          "acc": {
            "type": "string",
            "description": "Accuracy note as the service words it, in French: 'Variable suivant la source de mesure' means it varies with the measurement source."
          },
          "lat": {
            "type": "number",
            "description": "Latitude of the point, as sent."
          },
          "lon": {
            "type": "number",
            "description": "Longitude of the point, as sent."
          }
        },
        "additionalProperties": true
      }
    }
  },
  "description": "The altimetry response: one entry per requested point (here always one).",
  "additionalProperties": true
}