{
  "openapi": "3.1.0",
  "info": {
    "title": "Landsat Alphabet API",
    "version": "1.0.0",
    "description": "A public deterministic API that renders text as stitched Landsat letter imagery. Source imagery: NASA/USGS Landsat. Unofficial; not endorsed by NASA."
  },
  "servers": [
    {
      "url": "https://landsat.pranavkarra.me"
    }
  ],
  "paths": {
    "/v1/name/{text}.png": {
      "get": {
        "summary": "Render text as a cached PNG",
        "parameters": [
          {
            "name": "text",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string",
              "minLength": 1,
              "maxLength": 32
            },
            "description": "Text to render. Non-A-Z characters are stripped after decoding."
          },
          {
            "name": "size",
            "in": "query",
            "required": false,
            "schema": {
              "type": "integer",
              "enum": [
                512,
                1024
              ],
              "default": 512
            },
            "description": "Letter tile height in pixels."
          },
          {
            "name": "gap",
            "in": "query",
            "required": false,
            "schema": {
              "type": "integer",
              "minimum": 0,
              "maximum": 64,
              "default": 0
            },
            "description": "Transparent gap between letters in pixels."
          },
          {
            "name": "seed",
            "in": "query",
            "required": false,
            "schema": {
              "type": "string",
              "default": "default"
            },
            "description": "Optional deterministic variant seed."
          }
        ],
        "responses": {
          "200": {
            "description": "PNG image",
            "content": {
              "image/png": {}
            }
          },
          "400": {
            "description": "Invalid text or render parameters"
          }
        }
      }
    },
    "/v1/name/{text}.json": {
      "get": {
        "summary": "Return deterministic letter selections for text",
        "parameters": [
          {
            "name": "text",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string",
              "minLength": 1,
              "maxLength": 32
            },
            "description": "Text to render. Non-A-Z characters are stripped after decoding."
          },
          {
            "name": "size",
            "in": "query",
            "required": false,
            "schema": {
              "type": "integer",
              "enum": [
                512,
                1024
              ],
              "default": 512
            },
            "description": "Letter tile height in pixels."
          },
          {
            "name": "gap",
            "in": "query",
            "required": false,
            "schema": {
              "type": "integer",
              "minimum": 0,
              "maximum": 64,
              "default": 0
            },
            "description": "Transparent gap between letters in pixels."
          },
          {
            "name": "seed",
            "in": "query",
            "required": false,
            "schema": {
              "type": "string",
              "default": "default"
            },
            "description": "Optional deterministic variant seed."
          }
        ],
        "responses": {
          "200": {
            "description": "Selected letters, tile URLs, source URLs, and attribution",
            "content": {
              "application/json": {}
            }
          },
          "400": {
            "description": "Invalid text or render parameters"
          }
        }
      }
    },
    "/v1/manifest.json": {
      "get": {
        "summary": "Return the full Landsat letter inventory",
        "responses": {
          "200": {
            "description": "Manifest of available letter variants and tile URLs",
            "content": {
              "application/json": {}
            }
          }
        }
      }
    },
    "/llms.txt": {
      "get": {
        "summary": "Agent-readable usage guide",
        "responses": {
          "200": {
            "description": "Plain-text instructions for coding agents",
            "content": {
              "text/plain": {}
            }
          }
        }
      }
    }
  }
}