The lookup API allows to query the address and other details of one or
multiple OSM objects like node, way or relation.
-## Parameters
+## Endpoint
The lookup API has the following format:
prefixed with its type, one of node(N), way(W) or relation(R). Up to 50 ids
can be queried at the same time.
-Additional optional parameters are explained below.
+!!! danger "Deprecation warning"
+ The API can also be used with the URL
+ `https://nominatim.openstreetmap.org/lookup.php`. This is now deprecated
+ and will be removed in future versions.
+
+
+## Parameters
+
+This section lists additional optional parameters.
### Output format
-* `format=[xml|json|jsonv2|geojson|geocodejson]`
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| format | one of: `xml`, `json`, `jsonv2`, `geojson`, `geocodejson` | `jsonv2` |
+
+See [Place Output Formats](Output.md) for details on each format.
+
-See [Place Output Formats](Output.md) for details on each format. (Default: xml)
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| json_callback | function name | _unset_ |
-* `json_callback=<string>`
+When given, then JSON output will be wrapped in a callback function with
+the given name. See [JSONP](https://en.wikipedia.org/wiki/JSONP) for more
+information.
-Wrap JSON output in a callback function (JSONP) i.e. `<string>(<json>)`.
Only has an effect for JSON output formats.
+
### Output details
-* `addressdetails=[0|1]`
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| addressdetails | 0 or 1 | 0 |
+
+When set to 1, include a breakdown of the address into elements.
+The exact content of the address breakdown depends on the output format.
-Include a breakdown of the address into elements. (Default: 0)
+!!! tip
+ If you are interested in a stable classification of address categories
+ (suburb, city, state, etc), have a look at the `geocodejson` format.
+ All other formats return classifications according to OSM tagging.
+ There is a much larger set of categories and they are not always consistent,
+ which makes them very hard to work with.
-* `extratags=[0|1]`
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| extratags | 0 or 1 | 0 |
-Include additional information in the result if available,
-e.g. wikipedia link, opening hours. (Default: 0)
+When set to 1, the response include any additional information in the result
+that is available in the database, e.g. wikipedia link, opening hours.
-* `namedetails=[0|1]`
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| namedetails | 0 or 1 | 0 |
-Include a list of alternative names in the results. These may include
-language variants, references, operator and brand. (Default: 0)
+When set to 1, include a full list of names for the result. These may include
+language variants, older names, references and brand.
### Language of results
-* `accept-language=<browser language string>`
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| accept-language | browser language string | content of "Accept-Language" HTTP header |
+
+Preferred language order for showing search results. This may either be
+a simple comma-separated list of language codes or have the same format
+as the ["Accept-Language" HTTP header](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Language).
+
+!!! tip
+ First-time users of Nominatim tend to be confused that they get different
+ results when using Nominatim in the browser versus in a command-line tool
+ like wget or curl. The command-line tools
+ usually don't send any Accept-Language header, prompting Nominatim
+ to show results in the local language. Browsers on the contratry always
+ send the currently chosen browser language.
-Preferred language order for showing search results, overrides the value
-specified in the "Accept-Language" HTTP header.
-Either use a standard RFC2616 accept-language string or a simple
-comma-separated list of language codes.
### Polygon output
-* `polygon_geojson=1`
-* `polygon_kml=1`
-* `polygon_svg=1`
-* `polygon_text=1`
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| polygon_geojson | 0 or 1 | 0 |
+| polygon_kml | 0 or 1 | 0 |
+| polygon_svg | 0 or 1 | 0 |
+| polygon_text | 0 or 1 | 0 |
-Output geometry of results as a GeoJSON, KML, SVG or WKT. Only one of these
-options can be used at a time. (Default: 0)
+Add the full geometry of the place to the result output. Output formats
+in GeoJSON, KML, SVG or WKT are supported. Only one of these
+options can be used at a time.
-* `polygon_threshold=0.0`
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| polygon_threshold | floating-point number | 0.0 |
-Return a simplified version of the output geometry. The parameter is the
+When one of the polygon_* outputs is chosen, return a simplified version
+of the output geometry. The parameter describes the
tolerance in degrees with which the geometry may differ from the original
-geometry. Topology is preserved in the result. (Default: 0.0)
+geometry. Topology is preserved in the geometry.
+
### Other
-* `email=<valid email address>`
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| email | valid email address | _unset_ |
If you are making large numbers of request please include an appropriate email
-address to identify your requests. See Nominatim's [Usage Policy](https://operations.osmfoundation.org/policies/nominatim/) for more details.
+address to identify your requests. See Nominatim's
+[Usage Policy](https://operations.osmfoundation.org/policies/nominatim/) for more details.
+
-* `debug=[0|1]`
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| debug | 0 or 1 | 0 |
Output assorted developer debug information. Data on internals of Nominatim's
-"Search Loop" logic, and SQL queries. The output is (rough) HTML format.
-This overrides the specified machine readable format. (Default: 0)
+"search loop" logic, and SQL queries. The output is HTML format.
+This overrides the specified machine readable format.
## Examples
projects / nominatim.git / blobdiff