> For the complete documentation index, see [llms.txt](https://peoplescourt.ai/llms.txt). This page is also available as Markdown.

# File the opposite party’s answering brief

File the opposing party’s Answer to the identified appeal. Partner membership requires appeal:answer. The appeal deadline and duplicate-answer checks apply.

Reference

Decision and remedies

POST

partial

`/api/cases/{id}/appeals/{appealId}/answers`

`answerAppealPreview`

## Authentication and authority

Use one listed account-session, scoped OAuth, or partner credential alternative. Account tokens retain the approving account’s authority. Cookie-authenticated writes require same-origin authorization. Alternatives are OR; schemes in one alternative are AND.

`CanonicalPartnerBearer`

Partner key issued after partner access is approved. The key’s role and current case membership determine which actions it authorizes.

`CanonicalSession`

The signed-in account’s session. Access is limited to that account’s authority; writes require same-origin authorization.

`AccountOAuth`

Account tokens authorize only their approving account and approved scopes. S256 PKCE is mandatory on the code flow. Client credentials require a registered autonomous-agent account and cannot request offline_access; on the MCP resource they permit only cases:read for the registered existing case. Connector clients use authorization code on the MCP resource with its supported connector permissions. Explicit reacceptance is required after Rules or disclosure changes.

## Parameters

Name

Location

Requirement

Schema

`id`

path

Required

{"type":"string"}

`appealId`

path

Required

{"type":"string"}

`Idempotency-Key`

header

Optional

{"type":"string"}

## Request body

Required request body.

application/json

```json
{
  "$ref": "#/components/schemas/CanonicalRemedyInput",
  "description": "Post-Award requests retain the applicable seven-day period after service despite an appeal waiver or completed execution. Existing appellate material-specific deadlines remain controlling. An exact sourceSupplement target opens only that supplement’s correction window, without renewing the deadline for unrelated original material.",
  "oneOf": [
    {
      "type": "object",
      "properties": {
        "expectedRevision": {
          "type": "integer",
          "minimum": 0
        },
        "notice": {
          "type": "string"
        },
        "claimedErrors": {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        "outcomeEffect": {
          "type": "string"
        },
        "response": {
          "type": "string"
        },
        "crossErrors": {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        "requestedDisposition": {
          "type": "string"
        },
        "kind": {
          "type": "string",
          "enum": [
            "correction",
            "additional_award"
          ]
        },
        "request": {
          "type": "string"
        },
        "pleadedReliefIndex": {
          "type": "integer",
          "minimum": 0
        },
        "sourceSupplement": false,
        "correctionTarget": {
          "description": "Required for correction after a Rules 1.0 modification, substitution, or vacatur. Vacatur permits only appellate_text. Unchanged funds instructions retain the original request deadline.",
          "oneOf": [
            {
              "type": "object",
              "required": [
                "kind"
              ],
              "additionalProperties": false,
              "properties": {
                "kind": {
                  "type": "string",
                  "const": "appellate_text"
                }
              }
            },
            {
              "type": "object",
              "required": [
                "kind",
                "index"
              ],
              "additionalProperties": false,
              "properties": {
                "kind": {
                  "type": "string",
                  "const": "funds_instruction"
                },
                "index": {
                  "type": "integer",
                  "minimum": 0
                }
              }
            }
          ]
        },
        "action": {
          "type": "string",
          "enum": [
            "file",
            "respond"
          ]
        },
        "requestId": {
          "type": "string"
        }
      }
    },
    {
      "type": "object",
      "properties": {
        "expectedRevision": {
          "type": "integer",
          "minimum": 0
        },
        "notice": {
          "type": "string"
        },
        "claimedErrors": {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        "outcomeEffect": {
          "type": "string"
        },
        "response": {
          "type": "string"
        },
        "crossErrors": {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        "requestedDisposition": {
          "type": "string"
        },
        "kind": {
          "type": "string",
          "const": "correction"
        },
        "request": {
          "type": "string"
        },
        "pleadedReliefIndex": {
          "type": "integer",
          "minimum": 0
        },
        "sourceSupplement": {
          "$ref": "#/components/schemas/PostExecutionSupplementTarget",
          "type": "object",
          "additionalProperties": false,
          "required": [
            "id",
            "sha256"
          ],
          "description": "Exact signed supplement coordinate. A correction request may target only a verified supplement in this case that has no correction successor when the request is filed. Its seven-day period runs from its service. Omit sourceSupplement to target the original Award; unrelated original deadlines are never renewed.",
          "properties": {
            "id": {
              "type": "string",
              "minLength": 1
            },
            "sha256": {
              "type": "string",
              "pattern": "^[a-f0-9]{64}$"
            }
          }
        },
        "correctionTarget": {
          "description": "Required for correction after a Rules 1.0 modification, substitution, or vacatur. Vacatur permits only appellate_text. Unchanged funds instructions retain the original request deadline.",
          "oneOf": [
            {
              "type": "object",
              "required": [
                "kind"
              ],
              "additionalProperties": false,
              "properties": {
                "kind": {
                  "type": "string",
                  "const": "appellate_text"
                }
              }
            },
            {
              "type": "object",
              "required": [
                "kind",
                "index"
              ],
              "additionalProperties": false,
              "properties": {
                "kind": {
                  "type": "string",
                  "const": "funds_instruction"
                },
                "index": {
                  "type": "integer",
                  "minimum": 0
                }
              }
            }
          ]
        },
        "action": {
          "type": "string",
          "enum": [
            "file",
            "respond"
          ]
        },
        "requestId": {
          "type": "string"
        }
      },
      "required": [
        "sourceSupplement",
        "kind"
      ]
    }
  ]
}
```

## Responses

### 200

Authorized read, response, or recovered result.

application/json

```json
{
  "$ref": "#/components/schemas/CanonicalAnswerAppealPreviewResponse",
  "type": "object",
  "properties": {
    "data": {
      "$ref": "#/components/schemas/CanonicalAppealResult",
      "type": "object",
      "properties": {
        "appeal": {
          "$ref": "#/components/schemas/CanonicalAppeal",
          "type": "object",
          "properties": {
            "id": {
              "type": "string"
            },
            "disputeId": {
              "type": "string"
            },
            "filedBy": {
              "type": "string",
              "enum": [
                "claimant",
                "respondent"
              ]
            },
            "filedAt": {
              "type": "string"
            },
            "sourceDispositionId": {
              "type": "string"
            },
            "sourceAwardHash": {
              "type": "string"
            },
            "sourceAwardRevision": {
              "type": "integer"
            },
            "sourceRecordHash": {
              "type": "string"
            },
            "feeUsd": {
              "type": "number"
            },
            "feeRecordId": {
              "type": "string"
            },
            "feeStatus": {
              "type": "string",
              "enum": [
                "payable",
                "confirmed"
              ]
            },
            "openingBrief": {
              "type": "object",
              "properties": {
                "notice": {
                  "type": "string"
                },
                "claimedErrors": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  }
                },
                "outcomeEffect": {
                  "type": "string"
                },
                "filedAt": {
                  "type": "string"
                }
              }
            },
            "answerBrief": {
              "type": "object",
              "properties": {
                "response": {
                  "type": "string"
                },
                "crossErrors": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  }
                },
                "requestedDisposition": {
                  "type": "string"
                },
                "filedAt": {
                  "type": "string"
                }
              }
            },
            "answerDueAt": {
              "type": "string"
            },
            "reservationState": {
              "type": "string",
              "enum": [
                "unpaid",
                "awaiting_docket",
                "unapplied",
                "withdrawn",
                "lapsed"
              ]
            },
            "paymentRecordedAt": {
              "type": "string"
            },
            "operativeBindings": {
              "type": "array",
              "items": {
                "type": "object",
                "properties": {
                  "awardHash": {
                    "type": "string"
                  },
                  "awardRevision": {
                    "type": "integer"
                  },
                  "boundAt": {
                    "type": "string"
                  },
                  "election": {
                    "type": "string"
                  },
                  "supplementalStatement": {
                    "type": "string"
                  }
                }
              }
            },
            "revisionElection": {
              "type": "object",
              "properties": {
                "awardHash": {
                  "type": "string"
                },
                "awardRevision": {
                  "type": "integer"
                },
                "servedAt": {
                  "type": "string"
                },
                "dueAt": {
                  "type": "string"
                },
                "decidedAt": {
                  "type": "string"
                },
                "choice": {
                  "type": "string"
                }
              }
            },
            "decisionDueAt": {
              "type": "string"
            },
            "extendedDecisionDueAt": {
              "type": "string"
            },
            "briefingClosedAt": {
              "type": "string"
            },
            "briefingCloseReason": {
              "type": "string"
            },
            "paymentReservationExpiresAt": {
              "type": "string"
            },
            "docketedAt": {
              "type": "string"
            },
            "docketNoticeServedAt": {
              "type": "string"
            },
            "reasonedDisposition": {
              "type": "object",
              "properties": {
                "text": {
                  "type": "string"
                },
                "by": {
                  "type": "string"
                },
                "at": {
                  "type": "string"
                }
              }
            },
            "decidedAt": {
              "type": "string"
            },
            "outcome": {
              "type": "string"
            }
          },
          "required": [
            "id",
            "filedBy",
            "filedAt",
            "sourceDispositionId",
            "sourceAwardHash",
            "sourceAwardRevision",
            "sourceRecordHash",
            "feeUsd",
            "feeStatus"
          ]
        },
        "status": {
          "type": "string"
        },
        "feeChallenge": {
          "$ref": "#/components/schemas/CanonicalAppealFeeChallenge",
          "type": "object",
          "properties": {
            "method": {
              "type": "string",
              "const": "fiat_card"
            },
            "feeRecordId": {
              "type": "string"
            },
            "amountUsd": {
              "type": "number"
            },
            "deadlineAt": {
              "type": "string"
            },
            "checkoutEndpoint": {
              "type": "string"
            }
          },
          "required": [
            "method",
            "feeRecordId",
            "amountUsd",
            "checkoutEndpoint"
          ]
        }
      },
      "required": [
        "appeal"
      ]
    },
    "requestId": {
      "type": "string"
    }
  },
  "required": [
    "data",
    "requestId"
  ]
}
```

### 201

Remedy act recorded.

application/json

```json
{
  "$ref": "#/components/schemas/CanonicalAnswerAppealPreviewResponse",
  "type": "object",
  "properties": {
    "data": {
      "$ref": "#/components/schemas/CanonicalAppealResult",
      "type": "object",
      "properties": {
        "appeal": {
          "$ref": "#/components/schemas/CanonicalAppeal",
          "type": "object",
          "properties": {
            "id": {
              "type": "string"
            },
            "disputeId": {
              "type": "string"
            },
            "filedBy": {
              "type": "string",
              "enum": [
                "claimant",
                "respondent"
              ]
            },
            "filedAt": {
              "type": "string"
            },
            "sourceDispositionId": {
              "type": "string"
            },
            "sourceAwardHash": {
              "type": "string"
            },
            "sourceAwardRevision": {
              "type": "integer"
            },
            "sourceRecordHash": {
              "type": "string"
            },
            "feeUsd": {
              "type": "number"
            },
            "feeRecordId": {
              "type": "string"
            },
            "feeStatus": {
              "type": "string",
              "enum": [
                "payable",
                "confirmed"
              ]
            },
            "openingBrief": {
              "type": "object",
              "properties": {
                "notice": {
                  "type": "string"
                },
                "claimedErrors": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  }
                },
                "outcomeEffect": {
                  "type": "string"
                },
                "filedAt": {
                  "type": "string"
                }
              }
            },
            "answerBrief": {
              "type": "object",
              "properties": {
                "response": {
                  "type": "string"
                },
                "crossErrors": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  }
                },
                "requestedDisposition": {
                  "type": "string"
                },
                "filedAt": {
                  "type": "string"
                }
              }
            },
            "answerDueAt": {
              "type": "string"
            },
            "reservationState": {
              "type": "string",
              "enum": [
                "unpaid",
                "awaiting_docket",
                "unapplied",
                "withdrawn",
                "lapsed"
              ]
            },
            "paymentRecordedAt": {
              "type": "string"
            },
            "operativeBindings": {
              "type": "array",
              "items": {
                "type": "object",
                "properties": {
                  "awardHash": {
                    "type": "string"
                  },
                  "awardRevision": {
                    "type": "integer"
                  },
                  "boundAt": {
                    "type": "string"
                  },
                  "election": {
                    "type": "string"
                  },
                  "supplementalStatement": {
                    "type": "string"
                  }
                }
              }
            },
            "revisionElection": {
              "type": "object",
              "properties": {
                "awardHash": {
                  "type": "string"
                },
                "awardRevision": {
                  "type": "integer"
                },
                "servedAt": {
                  "type": "string"
                },
                "dueAt": {
                  "type": "string"
                },
                "decidedAt": {
                  "type": "string"
                },
                "choice": {
                  "type": "string"
                }
              }
            },
            "decisionDueAt": {
              "type": "string"
            },
            "extendedDecisionDueAt": {
              "type": "string"
            },
            "briefingClosedAt": {
              "type": "string"
            },
            "briefingCloseReason": {
              "type": "string"
            },
            "paymentReservationExpiresAt": {
              "type": "string"
            },
            "docketedAt": {
              "type": "string"
            },
            "docketNoticeServedAt": {
              "type": "string"
            },
            "reasonedDisposition": {
              "type": "object",
              "properties": {
                "text": {
                  "type": "string"
                },
                "by": {
                  "type": "string"
                },
                "at": {
                  "type": "string"
                }
              }
            },
            "decidedAt": {
              "type": "string"
            },
            "outcome": {
              "type": "string"
            }
          },
          "required": [
            "id",
            "filedBy",
            "filedAt",
            "sourceDispositionId",
            "sourceAwardHash",
            "sourceAwardRevision",
            "sourceRecordHash",
            "feeUsd",
            "feeStatus"
          ]
        },
        "status": {
          "type": "string"
        },
        "feeChallenge": {
          "$ref": "#/components/schemas/CanonicalAppealFeeChallenge",
          "type": "object",
          "properties": {
            "method": {
              "type": "string",
              "const": "fiat_card"
            },
            "feeRecordId": {
              "type": "string"
            },
            "amountUsd": {
              "type": "number"
            },
            "deadlineAt": {
              "type": "string"
            },
            "checkoutEndpoint": {
              "type": "string"
            }
          },
          "required": [
            "method",
            "feeRecordId",
            "amountUsd",
            "checkoutEndpoint"
          ]
        }
      },
      "required": [
        "appeal"
      ]
    },
    "requestId": {
      "type": "string"
    }
  },
  "required": [
    "data",
    "requestId"
  ]
}
```

### 404

The resource is unavailable or the caller lacks access.

### default

Stable problem code and requestId.

application/problem+json

```json
{
  "$ref": "#/components/schemas/Problem",
  "type": "object",
  "required": [
    "type",
    "title",
    "status",
    "code",
    "detail",
    "requestId"
  ],
  "properties": {
    "type": {
      "type": "string",
      "format": "uri"
    },
    "title": {
      "type": "string"
    },
    "status": {
      "type": "integer"
    },
    "code": {
      "type": "string"
    },
    "detail": {
      "type": "string"
    },
    "requestId": {
      "type": "string"
    },
    "details": {
      "description": "Account-readiness refusals include a value-free checklist and exact account-page link. Other error codes may provide different details.",
      "anyOf": [
        {
          "$ref": "#/components/schemas/AccountReadinessDetails",
          "type": "object",
          "additionalProperties": false,
          "required": [
            "ready",
            "accountSetupUrl",
            "missing"
          ],
          "properties": {
            "ready": {
              "type": "boolean"
            },
            "accountSetupUrl": {
              "type": "string",
              "format": "uri"
            },
            "missing": {
              "type": "array",
              "items": {
                "$ref": "#/components/schemas/AccountReadinessRequirement",
                "type": "object",
                "additionalProperties": false,
                "required": [
                  "code",
                  "label",
                  "section",
                  "accountUrl"
                ],
                "properties": {
                  "code": {
                    "type": "string"
                  },
                  "label": {
                    "type": "string"
                  },
                  "section": {
                    "type": "string",
                    "enum": [
                      "email",
                      "identity",
                      "legal_documents"
                    ]
                  },
                  "accountUrl": {
                    "type": "string",
                    "format": "uri"
                  }
                }
              }
            }
          }
        },
        {
          "$ref": "#/components/schemas/LegalDocumentsRequiredDetails",
          "type": "object",
          "additionalProperties": false,
          "required": [
            "legalDocumentsUrl"
          ],
          "properties": {
            "legalDocumentsUrl": {
              "type": "string",
              "format": "uri",
              "description": "Absolute account-page URL where the person reviews and accepts the current Terms and Privacy Notice. Uses the configured public application origin. After accepting the documents, retry the original operation."
            },
            "ready": {
              "type": "boolean"
            },
            "accountSetupUrl": {
              "type": "string",
              "format": "uri"
            },
            "missing": {
              "type": "array",
              "items": {
                "$ref": "#/components/schemas/AccountReadinessRequirement",
                "type": "object",
                "additionalProperties": false,
                "required": [
                  "code",
                  "label",
                  "section",
                  "accountUrl"
                ],
                "properties": {
                  "code": {
                    "type": "string"
                  },
                  "label": {
                    "type": "string"
                  },
                  "section": {
                    "type": "string",
                    "enum": [
                      "email",
                      "identity",
                      "legal_documents"
                    ]
                  },
                  "accountUrl": {
                    "type": "string",
                    "format": "uri"
                  }
                }
              }
            }
          }
        },
        {}
      ]
    }
  }
}
```

## Example response

### Successful response

```json
{
  "data": {
    "appeal": {
      "id": "id_test",
      "filedBy": "claimant",
      "filedAt": "filedAt_test",
      "sourceDispositionId": "sourceDispositionId_test",
      "sourceAwardHash": "sourceAwardHash_test",
      "sourceAwardRevision": 1,
      "sourceRecordHash": "sourceRecordHash_test",
      "feeUsd": 0.9,
      "feeStatus": "payable"
    }
  },
  "requestId": "requestId_test"
}
```

## Errors

Read the response status and stable error code. See [errors](https://peoplescourt.ai/docs/api/errors.md) and [rate limits](https://peoplescourt.ai/docs/api/rate-limits.md) for recovery. Refresh the resource before resolving a state or digest conflict.

## Idempotency and retries

- For throttling, honor Retry-After when present. Back off on retryable server failures.
- Send a unique Idempotency-Key. An exact retry returns the stored result; reusing the key with a different request fails.
- The request is accepted only when its credential, authority, case state, and resource preconditions are satisfied.

## Request examples

Use `https://peoplescourt.ai` with the test credential issued for your integration.

```sh
curl --request POST \
  --url 'https://peoplescourt.ai/api/cases/pcase_test_123/appeals/appeal_test_123/answers' \
  --header 'Authorization: Bearer pk_test_replace_me' \
  --header 'Idempotency-Key: idem_test_12345678' \
  --header 'Content-Type: application/json' \
  --data '{}'
```

```ts
const input = {};

const response = await fetch("https://peoplescourt.ai/api/cases/pcase_test_123/appeals/appeal_test_123/answers", {
  method: "POST",
  headers: {
    "Authorization": "Bearer pk_test_replace_me",
    "Idempotency-Key": "idem_test_12345678",
    "Content-Type": "application/json"
  },
  body: JSON.stringify(input),
});
if (!response.ok) throw await response.json();
const result = await response.json();
```

```python
import requests

response = requests.post(
    "https://peoplescourt.ai/api/cases/pcase_test_123/appeals/appeal_test_123/answers",
    headers={
      "Authorization": "Bearer pk_test_replace_me",
      "Idempotency-Key": "idem_test_12345678",
      "Content-Type": "application/json"
    },
    json={},
    timeout=30,
)
response.raise_for_status()
result = response.json()
```