{
  "openapi": "3.1.0",
  "info": {
    "title": "AI & Automation Chronicle Content API",
    "version": "1.0.0",
    "summary": "Read-only access to every Chronicle post as structured JSON.",
    "description": "The AI & Automation Chronicle Content API exposes the publication archive as JSON so agents and\nother programs can cite posts without scraping HTML. It is read-only, requires no\nauthentication, and is served from the CDN edge.\n\nRate limiting is applied by the CDN rather than per key. Send a descriptive User-Agent\nand cache responses for at least one hour.\n\nEvery post also has a markdown representation: request the HTML URL with\n`Accept: text/markdown`, or append `.md` to its path.",
    "contact": {
      "name": "AI & Automation Chronicle maintainer",
      "email": "satishkc19@gmail.com",
      "url": "https://chronicle.kcsatish.com/contact"
    },
    "license": {
      "name": "MIT",
      "identifier": "MIT"
    },
    "termsOfService": "https://chronicle.kcsatish.com/privacy"
  },
  "servers": [
    {
      "url": "https://chronicle.kcsatish.com",
      "description": "Production"
    }
  ],
  "externalDocs": {
    "description": "Developer portal",
    "url": "https://chronicle.kcsatish.com/developers"
  },
  "tags": [
    {
      "name": "posts",
      "description": "The Chronicle archive."
    },
    {
      "name": "meta",
      "description": "Service discovery and publication statistics."
    }
  ],
  "paths": {
    "/api/v1/index.json": {
      "get": {
        "operationId": "getServiceIndex",
        "tags": [
          "meta"
        ],
        "summary": "Service index",
        "description": "Returns the API version and an absolute URL for every other endpoint. Start here when discovering the API.",
        "responses": {
          "200": {
            "description": "Service index.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "service",
                    "version",
                    "endpoints"
                  ],
                  "properties": {
                    "service": {
                      "type": "string"
                    },
                    "version": {
                      "type": "string"
                    },
                    "documentation": {
                      "type": "string",
                      "format": "uri"
                    },
                    "specification": {
                      "type": "string",
                      "format": "uri"
                    },
                    "endpoints": {
                      "type": "object",
                      "additionalProperties": {
                        "type": "string",
                        "format": "uri"
                      }
                    }
                  }
                }
              }
            }
          },
          "406": {
            "description": "The Accept header excluded application/json.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/posts.json": {
      "get": {
        "operationId": "listPosts",
        "tags": [
          "posts"
        ],
        "summary": "List every post",
        "description": "Returns all 44 posts, newest first. The response is a single page; there is no pagination because the archive is small enough to send whole.",
        "parameters": [
          {
            "name": "type",
            "in": "query",
            "required": false,
            "description": "Filter to one series. Applied client-side by agents; the served file always contains every post.",
            "schema": {
              "type": "string",
              "enum": [
                "research",
                "practice"
              ]
            }
          }
        ],
        "responses": {
          "200": {
            "description": "The full post index.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "count",
                    "posts"
                  ],
                  "properties": {
                    "count": {
                      "type": "integer",
                      "description": "Number of posts in the response."
                    },
                    "generatedAt": {
                      "type": "string",
                      "format": "date-time"
                    },
                    "posts": {
                      "type": "array",
                      "items": {
                        "$ref": "#/components/schemas/Post"
                      }
                    }
                  }
                }
              }
            }
          },
          "406": {
            "description": "The Accept header excluded application/json.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/posts/{postId}.json": {
      "get": {
        "operationId": "getPost",
        "tags": [
          "posts"
        ],
        "summary": "Get one post",
        "description": "Returns a single post including its full body as markdown.",
        "parameters": [
          {
            "name": "postId",
            "in": "path",
            "required": true,
            "description": "Stable post identifier, for example \"week-44\".",
            "schema": {
              "type": "string",
              "pattern": "^week-\\d{2}$"
            },
            "examples": {
              "latest": {
                "value": "week-44"
              }
            }
          }
        ],
        "responses": {
          "200": {
            "description": "One post.",
            "content": {
              "application/json": {
                "schema": {
                  "allOf": [
                    {
                      "$ref": "#/components/schemas/Post"
                    },
                    {
                      "type": "object",
                      "properties": {
                        "bodyMarkdown": {
                          "type": "string",
                          "description": "The full post body converted to markdown."
                        }
                      }
                    }
                  ]
                }
              }
            }
          },
          "404": {
            "description": "No post exists with that identifier.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          },
          "406": {
            "description": "The Accept header excluded application/json.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/stats.json": {
      "get": {
        "operationId": "getStats",
        "tags": [
          "meta"
        ],
        "summary": "Publication statistics",
        "description": "Post counts per series, the newest post in each series, and every topic tag in use.",
        "responses": {
          "200": {
            "description": "Publication statistics.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "totalPosts",
                    "bySeries"
                  ],
                  "properties": {
                    "totalPosts": {
                      "type": "integer"
                    },
                    "bySeries": {
                      "type": "object",
                      "additionalProperties": {
                        "type": "object",
                        "properties": {
                          "count": {
                            "type": "integer"
                          },
                          "latest": {
                            "type": "string"
                          }
                        }
                      }
                    },
                    "tags": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "generatedAt": {
                      "type": "string",
                      "format": "date-time"
                    }
                  }
                }
              }
            }
          },
          "406": {
            "description": "The Accept header excluded application/json.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "Post": {
        "type": "object",
        "required": [
          "id",
          "type",
          "seriesLabel",
          "seriesNumber",
          "title",
          "summary",
          "url"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^week-\\d{2}$",
            "description": "Stable post identifier, for example \"week-44\".",
            "examples": [
              "week-44"
            ]
          },
          "type": {
            "type": "string",
            "enum": [
              "research",
              "practice"
            ],
            "description": "Which of the two series the post belongs to."
          },
          "seriesLabel": {
            "type": "string",
            "description": "Human-facing series label, for example \"Week 25\" or \"Article 20\"."
          },
          "seriesNumber": {
            "type": "integer",
            "minimum": 1,
            "description": "Position within its series."
          },
          "title": {
            "type": "string",
            "description": "Post title."
          },
          "summary": {
            "type": "string",
            "description": "One-paragraph summary as shown on the archive card."
          },
          "tags": {
            "type": "array",
            "items": {
              "type": "string"
            },
            "description": "Topic tags."
          },
          "readingTime": {
            "type": [
              "string",
              "null"
            ],
            "description": "Estimated reading time, for example \"8 min read\"."
          },
          "datePublished": {
            "type": [
              "string",
              "null"
            ],
            "format": "date",
            "description": "Publication date in ISO 8601."
          },
          "dateModified": {
            "type": [
              "string",
              "null"
            ],
            "format": "date-time",
            "description": "Last modification timestamp in ISO 8601."
          },
          "wordCount": {
            "type": "integer",
            "description": "Word count of the post body."
          },
          "url": {
            "type": "string",
            "format": "uri",
            "description": "Canonical HTML URL."
          },
          "markdownUrl": {
            "type": "string",
            "format": "uri",
            "description": "Markdown representation of the same post."
          }
        }
      },
      "Error": {
        "type": "object",
        "required": [
          "error"
        ],
        "properties": {
          "error": {
            "type": "object",
            "required": [
              "status",
              "code",
              "message"
            ],
            "properties": {
              "status": {
                "type": "integer",
                "description": "HTTP status code, repeated for clients that only read the body."
              },
              "code": {
                "type": "string",
                "description": "Stable machine-readable error code.",
                "examples": [
                  "resource_not_found"
                ]
              },
              "message": {
                "type": "string",
                "description": "What went wrong, in one sentence."
              },
              "hint": {
                "type": "string",
                "description": "How to fix the request."
              },
              "path": {
                "type": "string",
                "description": "The path that produced the error."
              },
              "documentation": {
                "type": "string",
                "format": "uri"
              },
              "specification": {
                "type": "string",
                "format": "uri"
              }
            }
          }
        }
      }
    }
  }
}