{
  "openapi": "3.1.0",
  "info": {
    "title": "BuildBetter public website API",
    "version": "1.0.0",
    "description": "Discovery, public website content, the website assistant, and user-initiated forms. This specification does not describe the separate authenticated BuildBetter customer-data API or MCP service.",
    "contact": {
      "name": "BuildBetter support",
      "email": "support@buildbetter.app",
      "url": "https://buildbetter.ai/contact"
    }
  },
  "servers": [
    {
      "url": "https://buildbetter.ai"
    }
  ],
  "externalDocs": {
    "description": "Product API and authenticated MCP documentation",
    "url": "https://docs.buildbetter.ai/"
  },
  "paths": {
    "/api/contact": {
      "post": {
        "operationId": "contact",
        "summary": "Submit contact",
        "description": "User-initiated form submission. May send an email or notify the BuildBetter team. Agents must obtain the user’s authorization before submitting. A success response acknowledges acceptance; it does not confirm downstream delivery.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "name": {
                    "type": "string"
                  },
                  "email": {
                    "type": "string",
                    "format": "email"
                  },
                  "company": {
                    "type": "string"
                  },
                  "inquiryType": {
                    "type": "string"
                  },
                  "message": {
                    "type": "string"
                  }
                },
                "required": [
                  "name",
                  "email",
                  "inquiryType",
                  "message"
                ]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Submission accepted.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "success"
                  ],
                  "properties": {
                    "success": {
                      "const": true
                    }
                  }
                }
              }
            }
          },
          "400": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "405": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "415": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "500": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          }
        }
      }
    },
    "/api/builder-waitlist": {
      "post": {
        "operationId": "builderWaitlist",
        "summary": "Submit builder waitlist",
        "description": "User-initiated form submission. May send an email or notify the BuildBetter team. Agents must obtain the user’s authorization before submitting. A success response acknowledges acceptance; it does not confirm downstream delivery.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "email": {
                    "type": "string",
                    "format": "email"
                  },
                  "name": {
                    "type": "string"
                  },
                  "company": {
                    "type": "string"
                  },
                  "useCase": {
                    "type": "string"
                  }
                },
                "required": [
                  "email",
                  "name"
                ]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Submission accepted.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "success"
                  ],
                  "properties": {
                    "success": {
                      "const": true
                    }
                  }
                }
              }
            }
          },
          "400": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "405": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "415": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "500": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          }
        }
      }
    },
    "/api/development-waitlist": {
      "post": {
        "operationId": "developmentWaitlist",
        "summary": "Submit development waitlist",
        "description": "User-initiated form submission. May send an email or notify the BuildBetter team. Agents must obtain the user’s authorization before submitting. A success response acknowledges acceptance; it does not confirm downstream delivery.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "email": {
                    "type": "string",
                    "format": "email"
                  },
                  "name": {
                    "type": "string"
                  },
                  "company": {
                    "type": "string"
                  },
                  "useCase": {
                    "type": "string"
                  }
                },
                "required": [
                  "email",
                  "name"
                ]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Submission accepted.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "success"
                  ],
                  "properties": {
                    "success": {
                      "const": true
                    }
                  }
                }
              }
            }
          },
          "400": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "405": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "415": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "500": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          }
        }
      }
    },
    "/api/embed-inquiry": {
      "post": {
        "operationId": "embedInquiry",
        "summary": "Submit embed inquiry",
        "description": "User-initiated form submission. May send an email or notify the BuildBetter team. Agents must obtain the user’s authorization before submitting. A success response acknowledges acceptance; it does not confirm downstream delivery.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "name": {
                    "type": "string"
                  },
                  "email": {
                    "type": "string",
                    "format": "email"
                  },
                  "company": {
                    "type": "string"
                  },
                  "dataTypes": {
                    "type": "string"
                  },
                  "useCase": {
                    "type": "string"
                  }
                },
                "required": [
                  "name",
                  "email"
                ]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Submission accepted.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "success"
                  ],
                  "properties": {
                    "success": {
                      "const": true
                    }
                  }
                }
              }
            }
          },
          "400": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "405": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "415": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "500": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          }
        }
      }
    },
    "/api/mobile-reminder": {
      "post": {
        "operationId": "mobileReminder",
        "summary": "Submit mobile reminder",
        "description": "User-initiated form submission. May send an email or notify the BuildBetter team. Agents must obtain the user’s authorization before submitting. A success response acknowledges acceptance; it does not confirm downstream delivery.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "email": {
                    "type": "string",
                    "format": "email"
                  }
                },
                "required": [
                  "email"
                ]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Submission accepted.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "success"
                  ],
                  "properties": {
                    "success": {
                      "const": true
                    }
                  }
                }
              }
            }
          },
          "400": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "405": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "415": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "500": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          }
        }
      }
    },
    "/api/manifesto-download": {
      "post": {
        "operationId": "manifestoDownload",
        "summary": "Submit manifesto download",
        "description": "User-initiated form submission. May send an email or notify the BuildBetter team. Agents must obtain the user’s authorization before submitting. A success response acknowledges acceptance; it does not confirm downstream delivery.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "email": {
                    "type": "string",
                    "format": "email"
                  },
                  "source": {
                    "type": "string"
                  },
                  "timestamp": {
                    "type": "string"
                  }
                },
                "required": [
                  "email"
                ]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Submission accepted.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "success"
                  ],
                  "properties": {
                    "success": {
                      "const": true
                    }
                  }
                }
              }
            }
          },
          "400": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "405": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "415": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "500": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          }
        }
      }
    },
    "/api/csdemo": {
      "post": {
        "operationId": "csdemo",
        "summary": "Submit csdemo",
        "description": "User-initiated form submission. May send an email or notify the BuildBetter team. Agents must obtain the user’s authorization before submitting. A success response acknowledges acceptance; it does not confirm downstream delivery.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "email": {
                    "type": "string",
                    "format": "email"
                  },
                  "process": {
                    "type": "string"
                  },
                  "goal": {
                    "type": "string"
                  },
                  "source": {
                    "type": "string"
                  }
                },
                "required": [
                  "email"
                ]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Submission accepted.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "success"
                  ],
                  "properties": {
                    "success": {
                      "const": true
                    }
                  }
                }
              }
            }
          },
          "400": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "405": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "415": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "500": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          }
        }
      }
    },
    "/api/discounted-application": {
      "post": {
        "operationId": "discountedApplication",
        "summary": "Submit discounted application",
        "description": "User-initiated form submission. May send an email or notify the BuildBetter team. Agents must obtain the user’s authorization before submitting. A success response acknowledges acceptance; it does not confirm downstream delivery.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "orgType": {
                    "type": "string"
                  },
                  "companyName": {
                    "type": "string"
                  },
                  "domain": {
                    "type": "string"
                  },
                  "email": {
                    "type": "string",
                    "format": "email"
                  },
                  "country": {
                    "type": "string"
                  },
                  "employees": {
                    "type": "string"
                  },
                  "fundingRaised": {
                    "type": "string"
                  },
                  "annualRevenue": {
                    "type": "string"
                  },
                  "partnerProgram": {
                    "type": "string"
                  },
                  "message": {
                    "type": "string"
                  }
                },
                "required": [
                  "email",
                  "companyName",
                  "orgType"
                ]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Submission accepted.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "success"
                  ],
                  "properties": {
                    "success": {
                      "const": true
                    }
                  }
                }
              }
            }
          },
          "400": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "405": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "415": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "500": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          }
        }
      }
    },
    "/api/partner-application": {
      "post": {
        "operationId": "partnerApplication",
        "summary": "Submit partner application",
        "description": "User-initiated form submission. May send an email or notify the BuildBetter team. Agents must obtain the user’s authorization before submitting. A success response acknowledges acceptance; it does not confirm downstream delivery.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "partnerType": {
                    "type": "string"
                  },
                  "name": {
                    "type": "string"
                  },
                  "email": {
                    "type": "string",
                    "format": "email"
                  },
                  "company": {
                    "type": "string"
                  },
                  "website": {
                    "type": "string"
                  },
                  "linkedin": {
                    "type": "string"
                  },
                  "expertise": {
                    "type": "string"
                  },
                  "audience": {
                    "type": "string"
                  },
                  "experience": {
                    "type": "string"
                  },
                  "message": {
                    "type": "string"
                  }
                },
                "required": [
                  "email",
                  "name",
                  "company",
                  "partnerType",
                  "expertise",
                  "experience"
                ]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Submission accepted.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "success"
                  ],
                  "properties": {
                    "success": {
                      "const": true
                    }
                  }
                }
              }
            }
          },
          "400": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "405": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "415": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "500": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          }
        }
      }
    },
    "/api/agent": {
      "post": {
        "operationId": "askWebsiteAssistant",
        "summary": "Ask the public website assistant",
        "description": "Returns SSE data frames containing JSON events: status, text, citation, done, error, and ping. The stream is not a JSON document. Errors after streaming starts arrive as error events; HTTP validation/configuration failures use problem details. Maximum combined message content: 48,000 characters.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "required": [
                  "messages"
                ],
                "properties": {
                  "messages": {
                    "type": "array",
                    "minItems": 1,
                    "maxItems": 30,
                    "items": {
                      "type": "object",
                      "required": [
                        "role",
                        "content"
                      ],
                      "properties": {
                        "role": {
                          "enum": [
                            "user",
                            "assistant"
                          ]
                        },
                        "content": {
                          "type": "string",
                          "minLength": 1,
                          "maxLength": 16000
                        }
                      }
                    }
                  },
                  "currentPage": {
                    "type": "string"
                  }
                }
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Server-sent events.",
            "content": {
              "text/event-stream": {
                "schema": {
                  "type": "string"
                }
              }
            }
          },
          "400": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "405": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "503": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          }
        }
      }
    },
    "/api/pages": {
      "get": {
        "operationId": "listWebsitePages",
        "summary": "Discover current public website pages",
        "responses": {
          "200": {
            "description": "Canonical page index; review variants are excluded.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "site",
                    "pages"
                  ],
                  "properties": {
                    "site": {
                      "type": "string",
                      "format": "uri"
                    },
                    "pages": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "required": [
                          "path",
                          "title",
                          "description",
                          "category"
                        ],
                        "properties": {
                          "path": {
                            "type": "string"
                          },
                          "title": {
                            "type": "string"
                          },
                          "description": {
                            "type": "string"
                          },
                          "category": {
                            "type": "string"
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "/api/content": {
      "get": {
        "operationId": "readWebsitePage",
        "summary": "Read a current public page as Markdown",
        "parameters": [
          {
            "name": "path",
            "in": "query",
            "required": true,
            "schema": {
              "type": "string"
            },
            "example": "/product/bob",
            "description": "A relative page path. Absolute URLs and arbitrary upstream hosts are not accepted."
          }
        ],
        "responses": {
          "200": {
            "description": "Markdown derived from the server-rendered page.",
            "content": {
              "text/markdown": {
                "schema": {
                  "type": "string"
                }
              }
            },
            "headers": {
              "Vary": {
                "schema": {
                  "type": "string"
                },
                "description": "Includes Accept and Accept-Encoding."
              }
            }
          },
          "307": {
            "description": "Follow the canonical page URL.",
            "headers": {
              "Location": {
                "schema": {
                  "type": "string"
                }
              }
            }
          },
          "308": {
            "description": "Permanent canonical page redirect.",
            "headers": {
              "Location": {
                "schema": {
                  "type": "string"
                }
              }
            }
          },
          "400": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "404": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          },
          "502": {
            "description": "RFC 9457 problem details; error remains a string for existing form clients.",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "Problem": {
        "type": "object",
        "required": [
          "type",
          "title",
          "status",
          "detail",
          "code",
          "resolution",
          "error"
        ],
        "properties": {
          "type": {
            "type": "string",
            "format": "uri-reference"
          },
          "title": {
            "type": "string"
          },
          "status": {
            "type": "integer",
            "minimum": 400,
            "maximum": 599
          },
          "detail": {
            "type": "string"
          },
          "code": {
            "type": "string"
          },
          "resolution": {
            "type": "string"
          },
          "error": {
            "type": "string",
            "description": "Compatibility alias for detail."
          }
        }
      }
    }
  }
}