OpenStreetMap Tagging Schema MCP Server

Compare two sets of OpenStreetMap tags to identify differences, additions, deletions, and modifications. Performs detailed tag-level comparison showing which tags were added, removed, or changed between two versions. Provides human-readable names for all tags and values using the OSM tagging schema. Use this for reviewing tag changes, understanding feature modifications, analyzing tag history, or validating tag transformations. Returns structured diff with localized names for better readability.

Convert OpenStreetMap tags from flat text format (key=value per line) to JSON object format. This is an INPUT CONVERTER for AI workflows - use it FIRST when you receive tags in flat text format and need to work with them as a JSON object. Handles various text formats including key=value pairs (one per line), whitespace variations, empty lines, and comments (lines starting with #). Returns a clean JSON object with all parsed tags. Essential for processing OSM data from text exports, iD editor output, or JOSM exports.

Get complete detailed information about a specific OpenStreetMap preset. Presets are feature templates that define standard tagging patterns (e.g., the 'Restaurant' preset defines amenity=restaurant and lists fields like cuisine, outdoor_seating, etc.). Returns comprehensive preset information including: display name, all required and suggested tags, supported geometry types, complete list of fields (with template expansion), field types and options, and parent/child preset relationships. Use this to understand exactly how to tag a specific feature type, learn what fields are available for a preset, or get example values for proper tagging.

Retrieve all possible values for a specific OpenStreetMap tag key, with localized human-readable names for both the key and each value. This tool searches through the OSM tagging schema (both predefined field options and preset definitions) to find every documented value that can be used with the specified key. Returns four pieces of information: the normalized key name, localized key display name, a simple array of all values, and a detailed array with localized names for each value. Use this to discover what values are available for a tag (e.g., all amenity types), learn the proper terminology for values, or build UI selection lists. Essential for understanding OSM's controlled vocabularies.

Convert OpenStreetMap tags from JSON object format to flat text format (key=value per line). This is an OUTPUT CONVERTER for AI workflows - use it LAST when you need to present tags in a human-readable text format or export them for use in other tools. Produces clean, consistent key=value format with one tag per line, sorted alphabetically by key. Use this for generating human-readable tag lists, exporting to OSM editors, or sharing tag collections. The output format is compatible with JOSM, iD editor imports, and other OSM tools that accept flat text tag format.

Search for OpenStreetMap presets by name, tags, or geometry type. Presets are predefined feature templates that define how specific types of features should be tagged (e.g., 'Restaurant' preset defines standard tags for restaurants). Supports filtering by preset name keywords, specific tag filters, and geometry type (point/line/area/relation). Returns matching presets with their names, primary tags, geometry types, and match scores. Use this to find the correct preset for a feature type, discover how to tag specific features, or explore available feature templates in OSM.

Search for OpenStreetMap tags by single keyword or pattern. Searches across tag keys, tag values, and localized names to find matching tags. Supports fuzzy matching to find tags even with slight typos or variations. Returns matching tags with their keys, values, and human-readable names. Use this to discover tags related to a topic, find the correct tag when you know part of the name, or explore available tags in a category. For tag pair filtering (e.g., amenity=restaurant), use search_presets instead. Essential for learning OSM tagging vocabulary and discovering lesser-known tags.

Analyze an OpenStreetMap tag collection and provide intelligent suggestions for improvements. Identifies the feature type from existing tags, finds the matching OSM preset, compares current tags against preset requirements, suggests missing required fields, recommends commonly used optional fields, and provides examples for suggested fields. Returns prioritized improvement suggestions with explanations and example values. Use this to enhance incomplete features, learn best practices for tagging specific feature types, or improve data quality of existing OSM data.

Validate a single OpenStreetMap tag key-value pair against the OSM tagging schema. Performs comprehensive validation including: deprecation checking (identifies deprecated tags and suggests modern replacements), schema existence validation (verifies the tag key exists in the schema), option validation (checks if the value is in predefined options for that key), and field type checking (distinguishes between strict fields and combo fields that allow custom values). Returns detailed validation results with localized names and actionable messages. Use this for educational purposes, data quality checks, or validating individual tags before bulk operations.

Validate a complete collection of OpenStreetMap tags (e.g., all tags for a feature) against the OSM tagging schema. Performs batch validation of multiple tag pairs, checks for deprecated tags across the entire collection, identifies conflicting or incompatible tags, and validates tag combinations. Returns comprehensive validation results for all tags with individual validation status, deprecation warnings, and collection-level issues. Use this to validate complete features before uploading to OSM or for data quality analysis of existing features.