Mapstage Agent Skill

MapStage

Use this skill when building or tuning a MapStage scene: map/globe projection, satellite, hypsometric relief, Mapterhorn terrain, region isolate, CSS color grade, and JSON export.

When to use

• Need a live MapStage tuner (map vs globe, satellite vs relief, isolate).
• Need to lock paint / CSS / camera, then export JSON into another host.
• Need tiered settlements (capital / large / medium / small / pass / station / ordos).

Do not use the tuner page as the final render host.

Modes

| Mode | Purpose |

|------|---------|

| Production stack | Embed MapStage in your app: optional satellite/raster + Mapterhorn DEM (encoding: 'terrarium') + hillshade + OpenFreeMap vector water + CSS filter + city extrusions. Drive look from exported JSON. |

| Tuner | Local HTTP page under tuner/ for sliders, projection, isolate, preset load/export. |

Workflow

• Serve tuner: cd tuner && python -m http.server 8765 → http://localhost:8765/
• Tiles: default EOX Sentinel-2 cloudless + Mapterhorn (tuner/map-tiles.config.js). Override with gitignored map-tiles.config.local.js.
• Apply default preset tuner/preset-antique-default.json (same as tuner/presets/antique-default.json).
• Adjust projection / satellite / relief / isolate / CSS / cities until the look locks.
• Export JSON from the tuner (copy or download).
• Migrate paint + camera + CSS fields into the production MapStage scene (see references).
• In production: jumpTo camera; wait for idle; optionally pre-cache tiles. Avoid easeTo / flyTo for recorded frames.
• Always set DEM with encoding: 'terrarium'. Wrong encoding breaks hillshade/terrain.
• Final frames render from the production host — not from the tuner UI.

Hard rules

• Tiles not bundled — MapStage fetches DEM and basemap at runtime from configured URLs only.
• Only use basemap endpoints you are allowed to use — defaults are public demo tiles (EOX); swap via config when needed.
• encoding: 'terrarium' on the terrain source — mandatory.
• No easeTo / flyTo in recorded production paths; prefer jumpTo + idle.
• Do not host final render on tuner.
• Water is the built-in OpenFreeMap / OpenMapTiles vector layers. Do not expect or commit tuner/assets/water-data.js.

References

• references/参数列表说明.md — parameter tables + defaults
• references/tested-config.md — sources, layer order, jumpTo + idle
• references/tuner-workflow.md — HTTP tuner → export → production
• references/city-tier-schema.md — settlement tiers
• schemas/map-preset.schema.json
• schemas/sample-sites.schema.json
• tuner/ — live page, verify script, default preset, sample sites

Agents

See agents/openai.yaml for display name / default prompt.