> ## Documentation Index
> Fetch the complete documentation index at: https://docs.agg.market/llms.txt
> Use this file to discover all available pages before exploring further.

# Submit signatures for a parked fill

> Accepts client-produced signatures for a self-custodial fill. POST /execution/fill never returns the payloads to sign directly — the DAG parks asynchronously, after the fill response is sent. Poll GET /execution/status for `pendingSignatures` instead, sign each payload, then submit them here. Returns the next batch (empty when done).



## OpenAPI

````yaml /openapi/openapi.json post /execution/fill/{quoteId}/signatures
openapi: 3.0.2
info:
  title: AGG API
  version: 1.0.0
  description: >-
    Prediction market aggregator REST API — authentication, users, venue events,
    venue markets, orderbooks, charts, and execution workflows.
servers:
  - url: https://api.agg.market
    description: Production
  - url: https://api.staging.agg.market
    description: Staging
security: []
paths:
  /execution/fill/{quoteId}/signatures:
    post:
      tags:
        - Execution
      summary: Submit signatures for a parked fill
      description: >-
        Accepts client-produced signatures for a self-custodial fill. POST
        /execution/fill never returns the payloads to sign directly — the DAG
        parks asynchronously, after the fill response is sent. Poll GET
        /execution/status for `pendingSignatures` instead, sign each payload,
        then submit them here. Returns the next batch (empty when done).
      operationId: submitFillSignatures
      parameters:
        - name: quoteId
          in: path
          required: true
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - signatures
              properties:
                signatures:
                  minItems: 1
                  maxItems: 32
                  type: array
                  items:
                    type: object
                    required:
                      - stepId
                    properties:
                      stepId:
                        minLength: 1
                        maxLength: 128
                        type: string
                      signature:
                        minLength: 1
                        maxLength: 2048
                        type: string
                      txHash:
                        minLength: 66
                        maxLength: 66
                        type: string
      responses:
        '200':
          description: '200'
          content:
            application/json:
              schema:
                type: object
                required:
                  - quoteId
                  - orderIds
                  - status
                properties:
                  alreadyAccepted:
                    type: boolean
                  quoteId:
                    type: string
                  orderIds:
                    type: array
                    items:
                      type: string
                  status:
                    type: string
                    enum:
                      - pending
                  redeemId:
                    type: string
                  message:
                    type: string
                  pendingSignatures:
                    type: array
                    items:
                      type: object
                      required:
                        - stepId
                        - type
                        - venue
                        - signerAddress
                        - payload
                        - expiresAt
                      properties:
                        stepId:
                          type: string
                        type:
                          type: string
                          enum:
                            - eip712
                            - personal_sign
                            - transaction
                            - solana_transaction
                            - hl_l1_action
                            - eip7702_authorization
                            - safe_tx
                        venue:
                          type: string
                        signerAddress:
                          type: string
                        chainId:
                          type: number
                        payload: {}
                        expiresAt:
                          type: string
        '400':
          description: '400'
          content:
            application/json:
              schema:
                type: object
                required:
                  - message
                properties:
                  message:
                    type: string
        '401':
          description: '401'
          content:
            application/json:
              schema:
                type: object
                required:
                  - message
                properties:
                  message:
                    type: string
        '403':
          description: '403'
          content:
            application/json:
              schema:
                type: object
                required:
                  - message
                properties:
                  message:
                    type: string
        '404':
          description: '404'
          content:
            application/json:
              schema:
                type: object
                required:
                  - message
                properties:
                  message:
                    type: string
      security:
        - appId: []
          bearerAuth: []
components:
  securitySchemes:
    appId:
      type: apiKey
      in: header
      name: x-app-id
      description: Your application ID. Required for all app-tier and user-tier routes.
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: >-
        JWT access token returned by POST /auth/verify. Required for user-tier
        routes.

````