{
  "openapi": "3.1.0",
  "info": {
    "title": "Negirau Public API",
    "description": "Read-only, anonymous, CORS-open API for building third-party viewers over Negirau data. Counts are exposed as display values — exact up to 100, \"100+\" beyond — and never as rankings.",
    "version": "0.1.1",
    "termsOfService": "https://negirau.com/terms"
  },
  "servers": [
    {
      "url": "https://api.negirau.com/v1"
    }
  ],
  "paths": {
    "/subjects": {
      "get": {
        "operationId": "listSubjects",
        "summary": "List and search subjects",
        "description": "Cursor-paginated subject listing. `q` does free-text name search (Japanese and English): 1-2 characters match as a name prefix (single page), 3 or more match anywhere in the name. With `near`, switches to a distance-ordered search over subjects that have a spatial dimension (no cursor; results truncated at `limit`).",
        "x-mcp-tool-name": "negirau_list_subjects",
        "x-agent-description": "Search Negirau subjects (the recipients of appreciation). Use q for name search, near='lat,lng' for proximity search.",
        "parameters": [
          {
            "name": "q",
            "in": "query",
            "required": false,
            "description": "Free-text name search (Japanese and English). 1-2 characters match as a name prefix; 3 or more match anywhere in the name",
            "schema": {
              "description": "Free-text name search (Japanese and English). 1-2 characters match as a name prefix; 3 or more match anywhere in the name",
              "type": "string",
              "minLength": 1,
              "maxLength": 100
            }
          },
          {
            "name": "near",
            "in": "query",
            "required": false,
            "description": "lat,lng — switches to distance-ordered near search (no cursor)",
            "schema": {
              "description": "lat,lng — switches to distance-ordered near search (no cursor)",
              "type": "string",
              "pattern": "^-?\\d+(?:\\.\\d+)?,-?\\d+(?:\\.\\d+)?$"
            }
          },
          {
            "name": "radius",
            "in": "query",
            "required": false,
            "description": "Near-search radius in meters",
            "schema": {
              "default": 3000,
              "description": "Near-search radius in meters",
              "type": "integer",
              "minimum": 1,
              "maximum": 50000
            }
          },
          {
            "name": "limit",
            "in": "query",
            "required": false,
            "description": "Page size",
            "schema": {
              "default": 20,
              "description": "Page size",
              "type": "integer",
              "minimum": 1,
              "maximum": 100
            }
          },
          {
            "name": "cursor",
            "in": "query",
            "required": false,
            "description": "Keyset cursor from a previous page",
            "schema": {
              "description": "Keyset cursor from a previous page",
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Success",
            "content": {
              "application/json": {
                "schema": {
                  "anyOf": [
                    {
                      "type": "object",
                      "properties": {
                        "subjects": {
                          "type": "array",
                          "items": {
                            "type": "object",
                            "properties": {
                              "id": {
                                "type": "string",
                                "description": "Public identifier; the page URL is /subjects/{id}"
                              },
                              "name": {
                                "type": "string"
                              },
                              "lat": {
                                "anyOf": [
                                  {
                                    "type": "number"
                                  },
                                  {
                                    "type": "null"
                                  }
                                ],
                                "description": "Spatial dimension (optional)"
                              },
                              "lng": {
                                "anyOf": [
                                  {
                                    "type": "number"
                                  },
                                  {
                                    "type": "null"
                                  }
                                ]
                              }
                            },
                            "required": [
                              "id",
                              "name",
                              "lat",
                              "lng"
                            ],
                            "additionalProperties": false
                          }
                        },
                        "next_cursor": {
                          "anyOf": [
                            {
                              "type": "string"
                            },
                            {
                              "type": "null"
                            }
                          ],
                          "description": "Opaque keyset cursor; null on the last page. Absent semantics for near queries."
                        }
                      },
                      "required": [
                        "subjects",
                        "next_cursor"
                      ],
                      "additionalProperties": false
                    },
                    {
                      "type": "object",
                      "properties": {
                        "subjects": {
                          "type": "array",
                          "items": {
                            "type": "object",
                            "properties": {
                              "id": {
                                "type": "string",
                                "description": "Public identifier; the page URL is /subjects/{id}"
                              },
                              "name": {
                                "type": "string"
                              },
                              "lat": {
                                "anyOf": [
                                  {
                                    "type": "number"
                                  },
                                  {
                                    "type": "null"
                                  }
                                ],
                                "description": "Spatial dimension (optional)"
                              },
                              "lng": {
                                "anyOf": [
                                  {
                                    "type": "number"
                                  },
                                  {
                                    "type": "null"
                                  }
                                ]
                              },
                              "distance_m": {
                                "type": "number",
                                "description": "Great-circle distance from the query point, meters"
                              }
                            },
                            "required": [
                              "id",
                              "name",
                              "lat",
                              "lng",
                              "distance_m"
                            ],
                            "additionalProperties": false
                          }
                        }
                      },
                      "required": [
                        "subjects"
                      ],
                      "additionalProperties": false
                    }
                  ]
                }
              }
            }
          },
          "400": {
            "description": "Invalid query or cursor",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "error": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "error"
                  ],
                  "additionalProperties": false
                }
              }
            }
          }
        }
      }
    },
    "/subjects/{id}": {
      "get": {
        "operationId": "getSubject",
        "summary": "Get one subject",
        "description": "A single subject by its public identifier.",
        "x-mcp-tool-name": "negirau_get_subject",
        "x-agent-description": "Fetch one Negirau subject by id.",
        "parameters": [
          {
            "name": "id",
            "in": "path",
            "required": true,
            "description": "Public subject identifier",
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Success",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "id": {
                      "type": "string",
                      "description": "Public identifier; the page URL is /subjects/{id}"
                    },
                    "name": {
                      "type": "string"
                    },
                    "lat": {
                      "anyOf": [
                        {
                          "type": "number"
                        },
                        {
                          "type": "null"
                        }
                      ],
                      "description": "Spatial dimension (optional)"
                    },
                    "lng": {
                      "anyOf": [
                        {
                          "type": "number"
                        },
                        {
                          "type": "null"
                        }
                      ]
                    }
                  },
                  "required": [
                    "id",
                    "name",
                    "lat",
                    "lng"
                  ],
                  "additionalProperties": false
                }
              }
            }
          },
          "404": {
            "description": "No active subject has this identifier.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "error": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "error"
                  ],
                  "additionalProperties": false
                }
              }
            }
          }
        }
      }
    },
    "/subjects/{id}/reactions": {
      "get": {
        "operationId": "getSubjectReactions",
        "summary": "Reaction display values for a period",
        "description": "Total and per-type reaction display values for one subject over a period (week, month, year, or all time). Values are exact up to 100 and capped at \"100+\" beyond.",
        "x-mcp-tool-name": "negirau_get_reactions",
        "x-agent-description": "Reaction display values for a Negirau subject over a period.",
        "parameters": [
          {
            "name": "id",
            "in": "path",
            "required": true,
            "description": "Public subject identifier",
            "schema": {
              "type": "string"
            }
          },
          {
            "name": "period",
            "in": "query",
            "required": false,
            "description": "Aggregation period: ISO week ('2026-W33'), month ('2026-08'), year ('2026'), or 'all'. Default: 'all'",
            "schema": {
              "description": "Aggregation period: ISO week ('2026-W33'), month ('2026-08'), year ('2026'), or 'all'. Default: 'all'",
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Success",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "id": {
                      "type": "string"
                    },
                    "period": {
                      "type": "string",
                      "description": "The aggregation period as requested ('2026-W33', '2026-08', '2026', or 'all')"
                    },
                    "total": {
                      "type": "string",
                      "description": "Display value: the exact count up to 100, \"100+\" beyond"
                    },
                    "by_type": {
                      "type": "object",
                      "propertyNames": {
                        "type": "string"
                      },
                      "additionalProperties": {
                        "type": "string",
                        "description": "Display value: the exact count up to 100, \"100+\" beyond"
                      }
                    }
                  },
                  "required": [
                    "id",
                    "period",
                    "total",
                    "by_type"
                  ],
                  "additionalProperties": false
                }
              }
            }
          },
          "400": {
            "description": "Invalid query or cursor",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "error": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "error"
                  ],
                  "additionalProperties": false
                }
              }
            }
          },
          "404": {
            "description": "No active subject has this identifier.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "error": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "error"
                  ],
                  "additionalProperties": false
                }
              }
            }
          }
        }
      }
    }
  }
}