rendry-io Principal API

openapi: 3.2.0
info:
  title: Rendry Principal API
  version: 1.6.0
  description: 'Template-based image generation API. Design a template in the visual editor (or via POST /presets), then render on-brand images with one call. Every capability the MCP server exposes as a tool is reachable over REST as well — same implementation behind both, so the two never drift. For AI agents a remote MCP endpoint is available at /mcp (streamable HTTP) — see https://rendry.io/llms-full.txt. Every refusal, on every door, is one JSON object {error: machine code, message: sentence, …fields} with the HTTP status of its class — see the Refusal schema; an MCP tool error carries the same object as its text.


    Authentication: four bearer credentials open the render and template doors — a persisted live or test API key (sk_live_… / sk_test_…), the browser session of the signed-in owner (the JWT POST /auth/login returns) a connector token (the JWT the OAuth flow issues to an MCP client), and an ephemeral editor session (em_…). Browser/OAuth credentials may select a current team membership with X-Rendry-Account; API keys and embed sessions are bound to their persisted account and cannot switch accounts. GET /principal returns the resolved authority. Roles and scopes intersect; a removed member immediately loses access. Test mode is persisted on the credential: renders retain all admission limits, cost zero credits and carry a RENDRY TEST watermark; test credentials cannot publish public links. Operations that list the `session` scheme alone are the account cabinet: an API key is refused there with 401, a connector token with 403 `browser_session_required` (account deletion: `account_deletion_needs_session`). Operations with an empty `security` are public.


    Also served, not described operation by operation: GET /templates/{id}/preview.png and GET /template-assets/{name} (public; the gallery''s pictures), GET /assets/library (public; the built-in image stock), GET /plans, GET /billing/config and GET /version (public; prices and the running build), GET /openapi.json (public; this document), POST /feedback (public, rate-limited by IP) and POST /feedback/agent (render credentials), the OAuth 2.1 doors under /oauth (the three /.well-known discovery documents, /register, /authorize, /client-info, /token — public; POST /oauth/decision takes the owner''s session), the guest batch under /batch-tasks/guest (public, rate-limited by IP: POST /preview, POST, GET /{token}, GET /{token}/archive), the sign-in, sign-up, e-mail verification and password doors under /auth (public; POST /auth/verify/resend takes the owner''s session), the cabinet''s POST /user/password, POST /checkout, GET /billing/history, GET /billing/subscription, GET /photos/search and POST /photos/used (owner''s session only), the payment webhooks POST /billing/webhook and POST /billing/webhook/{provider} (signed by the provider), the /internal/* doors of the render nodes (internal token) and the /admin group (administrators, session only).'
  contact:
    url: https://rendry.io
servers:
- url: https://rendry.io/api/v1
  description: Production
security:
- apiKey: []
- session: []
- connector: []
- embed: []
tags:
- name: Principal
paths:
  /principal:
    get:
      operationId: getPrincipal
      summary: Read the current credential authority
      description: Account, member role, credential kind/mode and trusted subject resolved from current persisted authority. Selection cannot widen key or embed authority.
      responses:
        '200':
          description: Read the current credential authority
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Principal'
        '400':
          description: Typed refusal with a stable error code.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Refusal'
        '401':
          description: Typed refusal with a stable error code.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Refusal'
        '403':
          description: Typed refusal with a stable error code.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Refusal'
        '404':
          description: Typed refusal with a stable error code.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Refusal'
        '409':
          description: Typed refusal with a stable error code.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Refusal'
        '429':
          description: Typed refusal with a stable error code.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Refusal'
      parameters:
      - $ref: '#/components/parameters/AccountSelector'
      tags:
      - Principal
components:
  schemas:
    PrincipalCapabilities:
      type: object
      properties:
        read:
          type: boolean
        edit:
          type: boolean
        render:
          type: boolean
        manage_account:
          type: boolean
        publish:
          type: boolean
      required:
      - read
      - edit
      - render
      - manage_account
      - publish
    EmbedBrand:
      type: object
      additionalProperties: false
      description: Authenticated session identity; contains no remote source URL or private logo bytes. Empty brand retains Document editor. Rendry attribution always remains.
      properties:
        name:
          type: string
        logo_url:
          type: string
          enum:
          - /api/v1/embed/brand/logo
          description: Local authenticated snapshot endpoint. Fetch with bearer authorization into a Blob; never put a bearer token in an image URL.
        accent:
          type: string
    Principal:
      type: object
      properties:
        actor_id:
          type: string
        account_id:
          type: string
        role:
          type: string
          enum:
          - owner
          - admin
          - editor
          - viewer
        credential_kind:
          type: string
          enum:
          - browser
          - oauth
          - api_key
          - embed
        credential_id:
          type: string
        credential_mode:
          type: string
          enum:
          - live
          - test
        trusted_subject:
          type: string
          description: Only for an embed credential; authenticated customer subject, never the X-End-User analytics header.
        capabilities:
          $ref: '#/components/schemas/PrincipalCapabilities'
        brand:
          $ref: '#/components/schemas/EmbedBrand'
          description: Only on authenticated embed principals.
      required:
      - actor_id
      - account_id
      - role
      - credential_kind
      - credential_mode
      - capabilities
    PrepareArtRowsRequest:
      type: object
      properties:
        preset_id:
          type: string
        rows:
          type: array
          maxItems: 10
          items:
            type: object
            properties:
              dynamic_data:
                type: object
                additionalProperties:
                  type: string
              filename:
                type: string
              rows:
                type: object
                additionalProperties:
                  type: array
                  items:
                    type: object
                    additionalProperties:
                      type: string
                description: This item's rows for its repeat groups and tables (rows_key)
            additionalProperties: false
          minItems: 1
        dry_run:
          type: boolean
          default: false
      required:
      - preset_id
      - rows
      additionalProperties: false
    VariableDiagnosticCode:
      type: string
      description: The stable codes of variable diagnostics (specs/007-nested-variables/contracts/language.md). A diagnostic names the variable, the code, a reason sub-code, the referenced name, a cycle path and a code-point span in the source — never a source string, a supplied value or a result. A schema problem refuses the save (invalid_name, invalid_mode, reserved_name, unsupported_row_scope, source_limit) and nothing is written; a definition that does not resolve from the saved values is saved and named in the save's warnings; at render every unresolvable definition refuses the request before any charge (400, nothing rendered, nothing charged) with the same codes.
      enum:
      - invalid_name
      - invalid_mode
      - invalid_format
      - invalid_format_value
      - reserved_name
      - unsupported_row_scope
      - unsupported_reference_scope
      - template_syntax
      - formula_syntax
      - unknown_reference
      - cycle
      - nonnumeric_operand
      - division_by_zero
      - numeric_limit
      - source_limit
      - node_limit
      - depth_limit
      - output_limit
      - circular_layout_dependency
    PrepareArtJobRequest:
      type: object
      properties:
        job_id:
          type: string
          format: uuid
      required:
      - job_id
      additionalProperties: false
    PrepareArtRequest:
      type: object
      properties:
        preset_id:
          type: string
        rows:
          type: array
          maxItems: 10
          items:
            type: object
            properties:
              dynamic_data:
                type: object
                additionalProperties:
                  type: string
              filename:
                type: string
              rows:
                type: object
                additionalProperties:
                  type: array
                  items:
                    type: object
                    additionalProperties:
                      type: string
                description: This item's rows for its repeat groups and tables (rows_key)
            additionalProperties: false
          minItems: 1
        dry_run:
          type: boolean
          default: false
        job_id:
          type: string
          format: uuid
      additionalProperties: false
      oneOf:
      - $ref: '#/components/schemas/PrepareArtRowsRequest'
      - $ref: '#/components/schemas/PrepareArtJobRequest'
      description: Rows are the same objects as render_batch items. Send preset_id and rows to quote or start; job_id alone reads durable progress. Row indexes start at zero. Dry runs create no image/job rows, charge nothing and call no provider.
    VariableDiagnostic:
      type: object
      description: One reason a variable does not resolve (spec 007). Names, codes, positions — never a source string, a supplied value or a resolved value.
      required:
      - code
      - severity
      properties:
        code:
          $ref: '#/components/schemas/VariableDiagnosticCode'
        severity:
          type: string
          enum:
          - error
          - warning
        variable:
          type: string
          description: The definition or supplied input the problem belongs to; empty for a context-wide limit.
        reference:
          type: string
          description: The referenced name (unknown_reference, nonnumeric_operand).
        path:
          type: array
          items:
            type: string
          description: A cycle, its first name repeated at the end.
        reason:
          type: string
          description: 'A stable sub-code: which syntax rule or which limit.'
        span:
          type: object
          description: Half-open range of Unicode code points in the definition's source.
          properties:
            start:
              type: integer
            end:
              type: integer
    Refusal:
      type: object
      description: 'Every refusal of every door (status 400 and above), on REST and as the JSON text of an MCP tool error. `error` is a stable machine code to branch on; `message` is an English sentence for the log or the agent. A door that names its condition uses its own code (preset_not_found, unknown_field, variables_unresolved, insufficient_credits, api_key_scope_insufficient, …) and adds its fields beside the two; any other refusal carries the code of its HTTP status class: 400 invalid_input (invalid_request when the body is not the JSON the door reads), 401 unauthorized / invalid_token / invalid_api_key, 403 forbidden, 404 not_found, 405 method_not_allowed (with `allow`), 408/504 timeout, 409 conflict, 413 request_too_large (with `limit_bytes`), 422 unprocessable, 429 rate_limit_exceeded, 500 internal_error, 502/503 service_unavailable. A path that does not exist answers 404 not_found and a wrong method 405 before any credential is read. The message never carries our infrastructure''s text (hosts, drivers, Go type names).'
      required:
      - error
      - message
      properties:
        error:
          type: string
          description: Machine code, snake_case.
        message:
          type: string
          description: What was refused and what to do, in English.
        fields:
          type: array
          description: 'unknown_field: each key the door does not read, with the nearest known key. Nothing was run or charged. A near miss (a typo of one or two letters, a known alias) is not refused: it is renamed and reported in the reply: `autofixes` on /render/sync, /render/async, /batch-tasks, /assets/import and /user/api-keys; `autofixed_fields` on the doors that run an MCP tool (/render/batch, /render/preview, PATCH /presets/{id}, components, theme, clone, palette).'
          items:
            type: object
            properties:
              field:
                type: string
                description: 'The key as sent, with its path: `items[0].filenme`.'
              did_you_mean:
                type: string
        diagnostics:
          type: array
          description: 'variables_unresolved: why the template''s variables do not resolve for this call. Never a source, a supplied value or a result. Absent on the public /u/ link, whose visitor is not the template''s author.'
          items:
            $ref: '#/components/schemas/VariableDiagnostic'
        prompt:
          type: string
          description: 'art_missing: the resolved art description.'
        prepare_art:
          $ref: '#/components/schemas/PrepareArtRequest'
        style_id:
          type: string
          description: An unavailable or unowned art style.
        generate_asset:
          type: object
          description: Exact cache-sharing repair for inline layouts, drafts, document masters and document-specific variable or page facts. Generate the supplied resolved prompt, then retry the render.
          properties:
            style_id:
              type: string
            prompt:
              type: string
            aspect:
              type: string
      additionalProperties: true
  parameters:
    AccountSelector:
      name: X-Rendry-Account
      in: header
      schema:
        type: string
      description: Browser/OAuth current member account selector. API keys/embed credentials are bound to their persisted account and reject another account. Omitting this header selects the browser actor personal account.
  securitySchemes:
    apiKey:
      type: http
      scheme: bearer
      description: 'API key sk_live_... or sk_test_... — create at Settings → API Keys. Every key has a scope (read, render or full — see the APIKey schema); a call the scope does not cover answers 403 with `error` = `api_key_scope_insufficient`, the refused `tool`, the key''s `scope`, and a `message` naming what the key can call. A key limited to a list of presets answers a preset outside it with 403 `api_key_preset_not_allowed` and the refused `preset_id`; such a key renders and edits only its listed presets, and an inline design (canvas + layers, a document page or master of its own), a draft or a new template is refused with 403 `api_key_limited_to_presets` and a `reason` (inline_design, draft, create_template, inline_page). RESERVED: no door issues a key limited to presets yet — POST /user/api-keys hands out keys for the whole account — so `api_key_preset_not_allowed` and `api_key_limited_to_presets` are documented for clients built ahead of that door and are not answered by any key issued today.'
    session:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: 'The browser session of the signed-in owner: the JWT POST /auth/login (or the SSO door) returns, sent as `Authorization: Bearer <jwt>`. Opens every render and template door and, alone, the account cabinet (API keys, account deletion, password, billing).'
    connector:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: 'The token the OAuth 2.1 flow under /oauth issues to an MCP client (claude.ai connectors): the same JWT shape as a session, tagged as issued to a connector. Opens the render and template doors and /mcp; every cabinet door refuses it with 403 `browser_session_required`, account deletion with 403 `account_deletion_needs_session`.'
    embed:
      type: http
      scheme: bearer
      description: Ephemeral em_... token redeemed by the origin-restricted embedded editor. Its account, trusted subject, role and live/test mode are persisted server-side. It cannot access account administration, billing, account-wide batch services or public links. Never persist or put it in a URL.
x-rendry-service-policy:
  rates:
    rest_render:
      requests: 10
      window_seconds: 1
      burst: 10
      scope: account
      consistency: api_process
    mcp_request:
      requests: 10
      window_seconds: 1
      burst: 10
      scope: account
      consistency: api_process
    ui_request:
      requests: 10
      window_seconds: 1
      burst: 10
      scope: account
      consistency: api_process
    public_link:
      requests: 60
      window_seconds: 60
      burst: 60
      scope: ip
      consistency: api_process
    embed_frame:
      requests: 10
      window_seconds: 60
      burst: 10
      scope: ip
      consistency: api_process
    embed_redeem:
      requests: 10
      window_seconds: 60
      burst: 10
      scope: ip
      consistency: api_process
  sync_concurrency:
    account: 4
    subject: 2
    consistency: api_process
    scope: synchronous_render
  document_queue:
    pending_per_account: 4
    long_pending_per_account: 1
    long_above_pages: 20
    consistency: postgres_transaction
    scope: account; queued and processing documents
  retention:
    authenticated_days: 365
    guest_hours: 72
    url_cache_days: 30
    starts_at: 'authenticated: completion; guest: batch creation'
  end_user:
    header: X-End-User
    max_bytes: 64
    pattern: ^[A-Za-z0-9_.:@-]{1,64}$
    authority: analytics only; trusted embedded subject takes precedence
  notes:
  - REST, MCP and UI request buckets are separate; each account bucket is shared by members, keys and embedded subjects
  - API keys bypass only the UI bucket; authenticated embedded sessions use it
  - Sync concurrency is per API process; queued document admission is separately reserved in PostgreSQL
  - Retention is the source policy; deployment of storage lifecycle rules requires a separate operator action