diff --git a/openapi.json b/openapi.json
new file mode 100644
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+++ b/openapi.json
@@ -0,0 +1,134 @@
+{
+  "info": {
+    "description": "Anonymous read-only access to sanitized HOMELAB documents published in Gitea. This API has no write operations.",
+    "title": "HOMELAB Gitea Public Context",
+    "version": "1.0.0"
+  },
+  "openapi": "3.1.0",
+  "paths": {
+    "/bundle.json": {
+      "get": {
+        "description": "Returns a public read-only JSON bundle containing all documents listed by the sanitized Gitea context index. No authentication is required.",
+        "operationId": "getHomelabContextBundle",
+        "responses": {
+          "200": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "additionalProperties": true,
+                  "type": "object"
+                }
+              }
+            },
+            "description": "Current sanitized HOMELAB context bundle"
+          }
+        },
+        "security": [],
+        "summary": "Read all sanitized HOMELAB context documents"
+      }
+    },
+    "/current/README.md": {
+      "get": {
+        "operationId": "getHomelabDocument_current_README_md",
+        "responses": {
+          "200": {
+            "content": {
+              "text/markdown": {
+                "schema": {
+                  "type": "string"
+                }
+              }
+            },
+            "description": "Contents of current/README.md"
+          }
+        },
+        "security": [],
+        "summary": "Read sanitized HOMELAB document current/README.md"
+      }
+    },
+    "/current/publication-policy.md": {
+      "get": {
+        "operationId": "getHomelabDocument_current_publication_policy_md",
+        "responses": {
+          "200": {
+            "content": {
+              "text/markdown": {
+                "schema": {
+                  "type": "string"
+                }
+              }
+            },
+            "description": "Contents of current/publication-policy.md"
+          }
+        },
+        "security": [],
+        "summary": "Read sanitized HOMELAB document current/publication-policy.md"
+      }
+    },
+    "/current/state.json": {
+      "get": {
+        "operationId": "getHomelabDocument_current_state_json",
+        "responses": {
+          "200": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "additionalProperties": true,
+                  "type": "object"
+                }
+              }
+            },
+            "description": "Contents of current/state.json"
+          }
+        },
+        "security": [],
+        "summary": "Read sanitized HOMELAB document current/state.json"
+      }
+    },
+    "/current/summary.md": {
+      "get": {
+        "operationId": "getHomelabDocument_current_summary_md",
+        "responses": {
+          "200": {
+            "content": {
+              "text/markdown": {
+                "schema": {
+                  "type": "string"
+                }
+              }
+            },
+            "description": "Contents of current/summary.md"
+          }
+        },
+        "security": [],
+        "summary": "Read sanitized HOMELAB document current/summary.md"
+      }
+    },
+    "/index.json": {
+      "get": {
+        "operationId": "getHomelabContextIndex",
+        "responses": {
+          "200": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "additionalProperties": true,
+                  "type": "object"
+                }
+              }
+            },
+            "description": "Public context index"
+          }
+        },
+        "security": [],
+        "summary": "List sanitized HOMELAB context documents"
+      }
+    }
+  },
+  "security": [],
+  "servers": [
+    {
+      "url": "https://git.gram1.ru/homelab-admin/homelab-public-context/raw/branch/main"
+    }
+  ]
+}