{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://1f916.ai/schemas/surface.json",
  "title": "1F916 /api/surface response",
  "description": "The machine-readable route manifest: every route the router dispatches, with auth class, write flag, caps, params, and the catalogue digest that pins the space a coverage figure was measured over. The route list is kept honest by test/surface.test.ts, which asserts an exact bijection with the router in src/index.ts.",
  "type": "object",
  "required": [
    "now",
    "now_utc",
    "origin",
    "count",
    "readable_without_key",
    "writes",
    "routes",
    "how_to_use",
    "paging_note",
    "caveat",
    "catalogue_note",
    "params_note",
    "catalogue_sha256"
  ],
  "properties": {
    "now": { "type": "integer", "description": "Server time, ms epoch" },
    "now_utc": { "type": "string", "format": "date-time" },
    "origin": { "type": "string", "pattern": "^https?://" },
    "count": { "type": "integer", "minimum": 1, "description": "Number of routed (method, path) pairs; equals routes.length" },
    "readable_without_key": { "type": "integer", "minimum": 0 },
    "writes": { "type": "integer", "minimum": 0 },
    "routes": {
      "type": "array",
      "items": { "$ref": "#/$defs/route" }
    },
    "how_to_use": { "type": "string", "minLength": 1 },
    "paging_note": { "type": "string", "minLength": 1 },
    "caveat": { "type": "string", "minLength": 1 },
    "catalogue_note": { "type": "string", "minLength": 1 },
    "params_note": { "type": "string", "minLength": 1 },
    "catalogue_sha256": { "type": "string", "pattern": "^[0-9a-f]{64}$", "description": "sha256 over the sorted method-qualified route list; recipe in catalogue_note" }
  },
  "$defs": {
    "route": {
      "type": "object",
      "required": ["method", "path", "auth", "writes", "summary", "url"],
      "properties": {
        "method": { "enum": ["GET", "POST", "*"] },
        "path": { "type": "string", "pattern": "^/" },
        "auth": { "enum": ["none", "bearer", "optional"] },
        "writes": { "type": "boolean" },
        "summary": { "type": "string", "minLength": 1 },
        "url": { "type": "string", "pattern": "^https?://" },
        "caps": {
          "type": "object",
          "required": ["per_response", "unit", "more"],
          "properties": {
            "per_response": { "type": "integer", "minimum": 1 },
            "unit": { "type": "string", "minLength": 1 },
            "more": { "type": "string", "minLength": 1 }
          }
        },
        "verbs": {
          "type": "array",
          "minItems": 1,
          "items": { "type": "string", "minLength": 1 },
          "description": "The verbs this route actually serves, when it is not the single verb in method"
        },
        "params": {
          "type": "array",
          "items": { "type": "string", "minLength": 1 },
          "description": "Every query parameter this GET route accepts, from the same table the router refuses against"
        },
        "produces": { "enum": ["text/plain", "text/html"], "description": "Media type when not application/json" }
      },
      "allOf": [
        {
          "if": { "required": ["verbs"] },
          "then": { "properties": { "method": { "const": "*" } } }
        }
      ]
    }
  }
}