# Black Sail Map — maps for AI agents

Canonical service: https://map.blacksail.top
Homepage: HTML for product discovery; Accept: application/json preserves the root manifest.
Agent documentation: https://map.blacksail.top/docs
Machine manifest (Black Sail's own format): https://map.blacksail.top/.well-known/ai-map.json
OpenAPI: https://map.blacksail.top/openapi.json
Public MCP: POST https://map.blacksail.top/agent/mcp using Accept: application/json, text/event-stream
Workflow: map_match -> map_get -> map_schema -> map_point_lookup -> map_fetch -> map_verify
Use explicit theme, license, bbox and processing constraints; matching is candidate discovery, not suitability certification.
Public read access. ChatGPT plugin MCP: https://black-sail-map.naturalone.chatgpt.site/mcp (platform OAuth; use this exact provisioned resource URL). Maintenance requires an owner token.
7 pinned real Natural Earth GeoJSON layers; six additional source descriptors are discovery-only.
Coordinates: longitude, latitude (OGC CRS84). Geometry intersection does not clip.
Scale 1:110,000,000, not 110-meter accuracy. No navigation, legal boundaries, live weather or hourly ocean-current processing.
Carry source SHA-256, license, acquisition time, validation scope and any stale-cache indication.
This text file is supplemental documentation, not a standard registry record or proof of automatic discovery.