aio-taginfo 0.2.0

Async client for the OpenStreetMap taginfo API

A typed async client for the taginfo API, a system for finding and aggregating information about OpenStreetMap's tags, and making it browsable and searchable.

This library makes use of aiohttp for requests, and Pydantic for parsing and validating the responses.

Contents

• Rationale
• Usage
  • Example
• Endpoints

See also

• An overview of modules, classes and functions can be found in the API reference
• The version history is available in CHANGELOG.md
• The taginfo website, its API documentation, and its OSM Wiki page

Rationale

OpenStreetMap uses tags to add meaning to geographic objects. There is no fixed list of those tags. New tags can be invented and used as needed. Everybody can come up with a new tag and add it to new or existing objects. This makes OpenStreetMap enormously flexible, but sometimes also a bit hard to work with.

Whether you are contributing to OSM or using the OSM data, there are always questions like: What tags do people use for feature X? What tags can I use for feature Y so that it appears properly on the map? Is the tag Z described on the wiki actually in use and where?

Taginfo helps you by showing statistics about which tags are actually in the database, how many people use those tags, where they are used and so on. It also gets information about tags from the wiki and from other places. Taginfo tries to bring together all information about tags to help you understand how they are used and what they mean.

Taginfo has an API that lets you access the contents of its databases in several ways. The API is used internally for the web user interface and can also be used by anybody who wants to integrate taginfo data into their websites or applications.

Usage

The API is intended for the use of the OpenStreetMap community. Do not use it for other services. If you are not sure, ask on the mailing list (see below).

Always use a sensible User-agent header with enough information that we can contact you if there is a problem.

The server running the taginfo API does not have unlimited resources. Please use the API responsibly. Do not create huge amounts of requests to get the whole database or large chunks of it, instead use the database downloads provided. If you are using the API and you find it is slow, you are probably overusing it.

If you are using the taginfo API it is recommended that you join the taginfo-dev mailing list. Updates to the API will be announced there and this is also the right place for your questions.

The data available through taginfo is licenced under ODbL, the same license as the OpenStreetMap data.

OpenStreetMap® is open data, licensed under the Open Data Commons Open Database License (ODbL) by the OpenStreetMap Foundation (OSMF).

You are free to copy, distribute, transmit and adapt our data, as long as you credit OpenStreetMap and its contributors. If you alter or build upon our data, you may distribute the result only under the same licence. The full legal code explains your rights and responsibilities.

Example

Here is an example of an API request using this library:

from aio_taginfo import key_overview

# either use a temporary session…
response: Response[KeyOverview] = await key_overview(key="amenity")

# …or provide your own
async with aiohttp.ClientSession() as session:
    response: Response[KeyOverview] = await key_overview(key="amenity", session=session)

Endpoints

This library is early in development and most endpoints are still missing.

	Endpoint	Schema
	/api/4/key/chronology	multiple
	/api/4/key/combinations	paginated
✅	/api/4/key/distribution/nodes	image
	/api/4/key/distribution/ways	image
✅	/api/4/key/overview	single
✅	/api/4/key/prevalent_values	multiple
	/api/4/key/projects	paginated
✅	/api/4/key/similar	paginated
	/api/4/key/stats	multiple
	/api/4/key/values	paginated
	/api/4/key/wiki_pages	multiple
	/api/4/keys/all	paginated
	/api/4/keys/similar	paginated
	/api/4/keys/wiki_pages	paginated
	/api/4/keys/without_wiki_page	paginated
	/api/4/project/icon	image
	/api/4/project/tags	paginated
	/api/4/projects/all	paginated
	/api/4/projects/keys	paginated
	/api/4/projects/tags	paginated
	/api/4/relation/projects	paginated
	/api/4/relation/roles	paginated
	/api/4/relation/stats	multiple
	/api/4/relation/wiki_pages	multiple
	/api/4/relations/all	paginated
	/api/4/search/by_key_and_value	paginated
	/api/4/search/by_keyword	paginated
	/api/4/search/by_role	paginated
	/api/4/search/by_value	paginated
✅	/api/4/site/config/geodistribution	other
	/api/4/site/info	other
	/api/4/site/sources	other
	/api/4/tag/chronology	multiple
	/api/4/tag/combinations	paginated
	/api/4/tag/distribution/nodes	image
	/api/4/tag/distribution/ways	image
	/api/4/tag/overview	single
	/api/4/tag/projects	paginated
	/api/4/tag/stats	multiple
	/api/4/tag/wiki_pages	multiple
	/api/4/tags/list	multiple
	/api/4/tags/popular	paginated
	/api/4/unicode/characters	multiple
	/api/4/wiki/languages	multiple