{
  "openapi": "3.1.0",
  "info": {
    "title": "Go Loose API",
    "version": "0.1.0",
    "description": "Multi-tenant API-key management and runtime authorization."
  },
  "servers": [{"url": "/"}],
  "components": {
    "securitySchemes": {
      "session": {"type": "apiKey", "in": "cookie", "name": "go_loose_session"},
      "apiKey": {"type": "apiKey", "in": "header", "name": "X-API-Key"},
      "clientBasic": {"type": "http", "scheme": "basic"},
      "userBearer": {"type": "http", "scheme": "bearer"}
    },
    "schemas": {
      "Error": {"type": "object", "properties": {"error": {"type": "string"}}},
      "AuthorizationRequest": {
        "type": "object",
        "required": ["application", "method", "path"],
        "properties": {
          "tenant": {"type": "string", "example": "nmbs"},
          "application": {"type": "string", "example": "guess"},
          "method": {"type": "string", "example": "GET"},
          "path": {"type": "string", "example": "/api/guesses"},
          "host": {"type": "string", "example": "nmbs.guess.local"}
        }
      },
      "AuthorizationResponse": {
        "type": "object",
        "properties": {
          "allowed": {"type": "boolean"},
          "reason": {"type": "string"},
          "tenant_id": {"type": "string", "format": "uuid"},
          "tenant_slug": {"type": "string"},
          "application_id": {"type": "string", "format": "uuid"},
          "application_slug": {"type": "string"},
          "api_key_id": {"type": "string", "format": "uuid"},
          "api_key_name": {"type": "string"}
        }
      },
      "Membership": {
        "type": "object",
        "description": "A tenant role held by a user, with the capabilities it grants.",
        "properties": {
          "tenant_id": {"type": "string", "format": "uuid"},
          "tenant_slug": {"type": "string"},
          "tenant_name": {"type": "string"},
          "role": {"type": "string", "description": "Slug of the role, which may be a role this tenant defined."},
          "role_id": {"type": "string", "format": "uuid", "description": "Identifier of the role row. Send this back when assigning the role."},
          "permissions": {"type": "array", "items": {"$ref": "#/components/schemas/PermissionValue"}}
        }
      },
      "Profile": {
        "type": "object",
        "properties": {
          "id": {"type": "string", "format": "uuid"},
          "email": {"type": "string", "format": "email"},
          "display_name": {"type": "string"},
          "avatar_url": {"type": "string", "description": "Absolute picture URL, or an empty string when no picture is set."},
          "memberships": {"type": "array", "items": {"$ref": "#/components/schemas/Membership"}},
          "is_system_administrator": {"type": "boolean"},
          "name_customized": {"type": "boolean", "description": "True once the user set the display name themselves, which stops the identity provider from overwriting it."},
          "created_at": {"type": "string", "format": "date-time"},
          "last_login_at": {"type": "string", "format": "date-time"},
          "profile_updated_at": {"type": "string", "format": "date-time"},
          "avatar_updated_at": {"type": "string", "format": "date-time"}
        }
      },
      "ProfileUpdate": {
        "type": "object",
        "description": "Send display_name, avatar, or remove_avatar. avatar accepts raw base64 or a data URL.",
        "properties": {
          "display_name": {"type": "string", "minLength": 1, "maxLength": 200},
          "avatar": {"type": "string", "description": "Base64 or data URL of a JPEG, PNG, or GIF up to 2 MiB and 4096 by 4096 pixels."},
          "remove_avatar": {"type": "boolean"}
        }
      },
      "Role": {
        "type": "object",
        "description": "A named bundle of permissions. A built-in role has no tenant_id, is visible to every tenant, and cannot be edited or deleted. A tenant may define its own.",
        "required": ["id", "slug", "name", "system", "permissions"],
        "properties": {
          "id": {"type": "string", "format": "uuid"},
          "tenant_id": {"type": "string", "format": "uuid", "description": "Absent for built-in roles."},
          "slug": {"type": "string", "pattern": "^[a-z0-9][a-z0-9-]{0,62}$"},
          "name": {"type": "string", "minLength": 1, "maxLength": 100},
          "description": {"type": "string", "maxLength": 500},
          "system": {"type": "boolean", "description": "True for built-in roles, which are read only."},
          "permissions": {"type": "array", "items": {"$ref": "#/components/schemas/PermissionValue"}},
          "member_count": {"type": "integer", "description": "Members currently holding the role. A role that still has members cannot be deleted."},
          "assignable": {"type": "boolean", "description": "Whether the caller may assign this role. False when the role grants a permission the caller does not hold, which is what stops role assignment becoming a way to gain authority."}
        }
      },
      "PermissionValue": {
        "type": "string",
        "description": "The closed vocabulary of capabilities a role may grant. Mirrors internal/role and the role_permissions check constraint.",
        "enum": ["tenants.manage", "roles.manage", "users.manage", "applications.manage", "keys.manage", "contracts.manage", "users.read", "console.read", "profile.edit"]
      },
      "PermissionEntry": {
        "type": "object",
        "description": "A permission with the label and description the console renders.",
        "properties": {
          "value": {"$ref": "#/components/schemas/PermissionValue"},
          "label": {"type": "string"},
          "description": {"type": "string"}
        }
      },
      "RoleRequest": {
        "type": "object",
        "required": ["name", "permissions"],
        "properties": {
          "tenant_id": {"type": "string", "format": "uuid", "description": "Required when creating. Ignored when updating, which takes the role's own tenant."},
          "slug": {"type": "string", "pattern": "^[a-z0-9][a-z0-9-]{0,62}$", "description": "Required when creating, and fixed for the life of the role."},
          "name": {"type": "string", "minLength": 1, "maxLength": 100},
          "description": {"type": "string", "maxLength": 500},
          "permissions": {"type": "array", "items": {"$ref": "#/components/schemas/PermissionValue"}}
        }
      }
    }
  },
  "paths": {
    "/healthz": {
      "get": {
        "tags": [
          "Monitoring"
        ],
        "summary": "Liveness check",
        "responses": {"200": {"description": "Healthy"}}
      }
    },
    "/install": {
      "get": {
        "tags": ["Installation"],
        "summary": "Show the first-run installer",
        "responses": {"200": {"description": "Installer form"}, "303": {"description": "Already installed"}}
      },
      "post": {
        "tags": ["Installation"],
        "summary": "Persist Google OIDC configuration and optional demo data",
        "requestBody": {"required": true, "content": {"application/x-www-form-urlencoded": {"schema": {"type": "object", "required": ["csrf_token", "oidc_client_id", "oidc_client_secret"], "properties": {"csrf_token": {"type": "string"}, "oidc_client_id": {"type": "string"}, "oidc_client_secret": {"type": "string", "format": "password"}, "seed_demo": {"type": "boolean"}}}}}},
        "responses": {"303": {"description": "Installation completed; continue to Google OIDC login"}, "409": {"description": "Already installed"}, "502": {"description": "Google OIDC discovery failed"}}
      }
    },
    "/auth/password": {
      "post": {
        "tags": ["User Action"],
        "summary": "Authenticate a database-backed user",
        "requestBody": {"required": true, "content": {"application/x-www-form-urlencoded": {"schema": {"type": "object", "required": ["email", "password"], "properties": {"email": {"type": "string", "format": "email"}, "password": {"type": "string", "format": "password"}, "return": {"type": "string", "format": "uri"}}}}}},
        "responses": {"303": {"description": "Login succeeded"}, "401": {"description": "Invalid email or password"}, "429": {"description": "Temporarily rate limited"}}
      }
    },
    "/api/v1/authorize": {
      "post": {
        "tags": [
          "Authorization Management"
        ],
        "summary": "Authorize an incoming API request",
        "security": [{"apiKey": []}],
        "requestBody": {"required": true, "content": {"application/json": {"schema": {"$ref": "#/components/schemas/AuthorizationRequest"}}}},
        "responses": {
          "200": {"description": "Authorized", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/AuthorizationResponse"}}}},
          "401": {"description": "Missing or invalid key", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/Error"}}}},
          "403": {"description": "Key not allowed for this request", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/AuthorizationResponse"}}}}
        }
      }
    },
    "/api/v1/dashboard": {
      "get": {
        "tags": [
          "Dashboard Management"
        ],
        "summary": "Get management console data",
        "description": "Requires a role that grants console.read. Each tenant and user entry carries the capability names its role grants.",
        "security": [{"session": []}],
        "responses": {"200": {"description": "Dashboard data"}}
      }
    },
    "/profile": {
      "get": {
        "tags": ["Profile"],
        "summary": "Open the self-service profile screen",
        "description": "Available to every authenticated management session, including self-service User members.",
        "security": [{"session": []}],
        "responses": {"200": {"description": "Profile screen"}, "303": {"description": "Redirect to login"}}
      }
    },
    "/api/v1/profile": {
      "get": {
        "tags": ["Profile"],
        "summary": "Read the caller's own profile and tenant roles",
        "security": [{"session": []}],
        "responses": {
          "200": {"description": "Profile", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/Profile"}}}},
          "401": {"description": "Authentication required"}
        }
      },
      "put": {
        "tags": ["Profile"],
        "summary": "Update the caller's display name or profile picture",
        "security": [{"session": []}],
        "requestBody": {"required": true, "content": {"application/json": {"schema": {"$ref": "#/components/schemas/ProfileUpdate"}}}},
        "responses": {
          "200": {"description": "Updated profile", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/Profile"}}}},
          "400": {"description": "Invalid display name or unsupported picture"}
        }
      }
    },
    "/api/v1/avatars/{key}": {
      "get": {
        "tags": ["Profile"],
        "summary": "Fetch a profile picture",
        "description": "Public on purpose so other applications can embed the picture with a plain image tag. The key is 256 bits of randomness and exposes nothing about the user.",
        "parameters": [{"in": "path", "name": "key", "required": true, "schema": {"type": "string"}}],
        "responses": {
          "200": {"description": "Image bytes", "content": {"image/jpeg": {"schema": {"type": "string", "format": "binary"}}, "image/png": {"schema": {"type": "string", "format": "binary"}}, "image/gif": {"schema": {"type": "string", "format": "binary"}}}},
          "304": {"description": "Not modified"},
          "404": {"description": "No picture for that key"}
        }
      }
    },
    "/api/v1/tenants": {
      "post": {
        "tags": [
          "Tenant Management"
        ],
        "summary": "Create a tenant",
        "security": [{"session": []}],
        "responses": {"201": {"description": "Tenant created"}}
      }
    },
    "/api/v1/applications": {
      "post": {
        "tags": [
          "Application Management"
        ],
        "summary": "Register an application",
        "security": [{"session": []}],
        "responses": {"201": {"description": "Application registered"}}
      }
    },
    "/api/v1/keys": {
      "post": {
        "tags": [
          "Key Management"
        ],
        "summary": "Issue an API key",
        "security": [{"session": []}],
        "responses": {"201": {"description": "Key created; plaintext secret is returned once"}}
      }
    },
    "/api/v1/keys/{id}/revoke": {
      "post": {
        "tags": [
          "Key Management"
        ],
        "summary": "Revoke an API key",
        "security": [{"session": []}],
        "parameters": [{"in": "path", "name": "id", "required": true, "schema": {"type": "string", "format": "uuid"}}],
        "responses": {"204": {"description": "Key revoked"}}
      }
    },
    "/api/v1/contracts": {
      "post": {
        "tags": [
          "Contract Management"
        ],
        "summary": "Import a pasted contract or scan an OpenAPI URL",
        "security": [{"session": []}],
        "responses": {"201": {"description": "Contract imported"}}
      }
    },
    "/connect/authorize": {
      "get": {
        "tags": [
          "User Action"
        ],
        "summary": "Start hosted client application login",
        "parameters": [
          {"in": "query", "name": "response_type", "required": true, "schema": {"type": "string", "const": "code"}},
          {"in": "query", "name": "client_id", "required": true, "schema": {"type": "string"}},
          {"in": "query", "name": "redirect_uri", "required": true, "schema": {"type": "string", "format": "uri"}},
          {"in": "query", "name": "state", "required": true, "schema": {"type": "string"}}
        ],
        "responses": {"302": {"description": "Redirect to login or exact client callback"}}
      }
    },
    "/connect/token": {
      "post": {
        "tags": [
          "User Action"
        ],
        "summary": "Exchange a one-time authorization code",
        "description": "The nested user object carries role, permissions, and avatar_url for the tenant owning the application.",
        "security": [{"clientBasic": []}],
        "requestBody": {"required": true, "content": {"application/x-www-form-urlencoded": {"schema": {"type": "object"}}}},
        "responses": {"200": {"description": "Opaque client user session"}, "401": {"description": "Invalid code or client credentials"}}
      }
    },
    "/connect/userinfo": {
      "get": {
        "tags": [
          "User Action"
        ],
        "summary": "Validate a client user session and read the caller's role and picture",
        "description": "Returns id, email, display_name, avatar_url, tenant and application identity, role, and permissions.",
        "security": [{"userBearer": []}],
        "responses": {"200": {"description": "Authenticated client user"}, "401": {"description": "Invalid, revoked, or expired session"}}
      }
    },
    "/connect/logout": {
      "post": {
        "tags": [
          "User Action"
        ],
        "summary": "Revoke a client user session",
        "security": [{"userBearer": []}],
        "responses": {"204": {"description": "Session revoked"}}
      }
    },
    "/api/v1/applications/{id}/client-config": {
      "post": {
        "tags": [
          "Application Management"
        ],
        "summary": "Configure exact redirect URIs and rotate the client secret",
        "security": [{"session": []}],
        "parameters": [{"in": "path", "name": "id", "required": true, "schema": {"type": "string", "format": "uuid"}}],
        "responses": {"200": {"description": "Configuration saved; client secret returned once"}}
      }
    },
    "/api/v1/users": {
      "post": {
        "tags": [
          "User Management"
        ],
        "summary": "Invite a tenant user with a role",
        "description": "Requires users.manage in the tenant, which owner, admin, developer, and operator hold. role_id must name a role of that tenant whose permissions are a subset of the caller's own.",
        "security": [{"session": []}],
        "responses": {"201": {"description": "User invited"}}
      }
    },
    "/api/v1/users/{id}/access": {
      "put": {
        "tags": [
          "User Management"
        ],
        "summary": "Set tenant role and application access",
        "description": "Requires users.manage. The caller may not grant a role more powerful than their own, and may not demote the last owner of a tenant.",
        "security": [{"session": []}],
        "parameters": [{"in": "path", "name": "id", "required": true, "schema": {"type": "string", "format": "uuid"}}],
        "responses": {"204": {"description": "Access updated"}}
      }
    },
    "/api/v1/roles": {
      "get": {
        "tags": ["Role Management"],
        "summary": "List the roles available in a tenant",
        "description": "Returns every built-in role plus the roles this tenant defined, each annotated with whether the caller may assign it.",
        "security": [{"session": []}],
        "parameters": [{"in": "query", "name": "tenant_id", "required": true, "schema": {"type": "string", "format": "uuid"}}],
        "responses": {"200": {"description": "Role catalog", "content": {"application/json": {"schema": {"type": "object", "properties": {"roles": {"type": "array", "items": {"$ref": "#/components/schemas/Role"}}}}}}}, "404": {"description": "Not a member of that tenant"}}
      },
      "post": {
        "tags": ["Role Management"],
        "summary": "Define a role for a tenant",
        "description": "Requires roles.manage in the tenant. The role may not grant a permission the caller does not already hold, so an administrator cannot mint their way above their own authority.",
        "security": [{"session": []}],
        "requestBody": {"content": {"application/json": {"schema": {"$ref": "#/components/schemas/RoleRequest"}}}},
        "responses": {"201": {"description": "Role created", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/Role"}}}}, "400": {"description": "Malformed slug or name, or an unknown permission"}, "404": {"description": "The caller does not hold roles.manage, or the role would exceed their authority"}, "409": {"description": "The slug is already used in this tenant"}}
      }
    },
    "/api/v1/roles/{id}": {
      "put": {
        "tags": ["Role Management"],
        "summary": "Rename a role and replace its permissions",
        "description": "Built-in roles are immutable. Saving replaces the permissions of every member holding the role, so treat it as a live change.",
        "security": [{"session": []}],
        "parameters": [{"in": "path", "name": "id", "required": true, "schema": {"type": "string", "format": "uuid"}}],
        "requestBody": {"content": {"application/json": {"schema": {"$ref": "#/components/schemas/RoleRequest"}}}},
        "responses": {"200": {"description": "Role updated", "content": {"application/json": {"schema": {"$ref": "#/components/schemas/Role"}}}}, "400": {"description": "Malformed name or an unknown permission"}, "404": {"description": "Unknown role, a built-in role, or a role belonging to another tenant"}}
      },
      "delete": {
        "tags": ["Role Management"],
        "summary": "Delete one of the tenant's own roles",
        "security": [{"session": []}],
        "parameters": [{"in": "path", "name": "id", "required": true, "schema": {"type": "string", "format": "uuid"}}],
        "responses": {"204": {"description": "Role deleted"}, "404": {"description": "Unknown role, a built-in role, or a role belonging to another tenant"}, "409": {"description": "The role still has members"}}
      }
    },
    "/roles": {
      "get": {
        "tags": ["Role Management"],
        "summary": "Role management screen",
        "security": [{"session": []}],
        "responses": {"200": {"description": "HTML page"}}
      }
    },
    "/api/v1/users/{id}/approve": {
      "post": {
        "tags": ["User Management"],
        "summary": "Approve a waiting-room user into a tenant",
        "description": "Requires a system administrator session. Unlike the tenant-scoped endpoints this is not limited by the caller's own role, because it grants a first membership across tenants.",
        "security": [{"session": []}],
        "parameters": [{"in": "path", "name": "id", "required": true, "schema": {"type": "string", "format": "uuid"}}],
        "responses": {"204": {"description": "User approved"}, "404": {"description": "User or permission not found"}}
      }
    }
  }
}