Ground Elevation at Several Points in France (IGN Géoplateforme)

geopf/elevation-points

Ground elevation, in metres, at up to 20 longitude and latitude pairs in one call, from the Géoplateforme (IGN) altimetry service and its ign_rge_alti_wld resource. Longitudes and latitudes are pipe-separated lists of the same length (WGS 84 decimal degrees). Returns one entry per point, in order, with its elevation `z` (-99999 means no elevation data at that point) and an `acc` accuracy text. 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.

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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: "geopf/elevation-points" })

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

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "geopf/elevation-points", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "geopf/elevation-points", 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 20, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "lon",
    "lat"
  ],
  "properties": {
    "lat": {
      "type": "string",
      "pattern": "^-?[0-9]+(\\.[0-9]+)?(\\|-?[0-9]+(\\.[0-9]+)?){0,19}$",
      "description": "Up to 20 latitudes in decimal degrees separated by a pipe, for example 48.85|48.86|45.83. Same count as lon, paired by position."
    },
    "lon": {
      "type": "string",
      "pattern": "^-?[0-9]+(\\.[0-9]+)?(\\|-?[0-9]+(\\.[0-9]+)?){0,19}$",
      "description": "Up to 20 longitudes in decimal degrees separated by a pipe, for example 2.35|2.36|6.87. Same count as lat."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "results"
  ],
  "properties": {
    "results": {
      "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."
          },
          "lat": {
            "type": "number",
            "description": "Latitude of the point, as sent."
          },
          "lon": {
            "type": "number",
            "description": "Longitude of the point, as sent."
          }
        },
        "additionalProperties": true
      },
      "description": "One entry per requested point, in the order sent."
    }
  },
  "description": "One elevation per requested point, in order.",
  "additionalProperties": true
}