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

# Read authorized procedural message threads

Requires the approving account’s current party access. OAuth never grants administrator or reviewer authority. Typed channels retain separate hosted-thread and partner-notice authority and visibility. Partner writes require message:create and Idempotency-Key.

Reference

Party procedure

GET

partial

`/api/cases/{id}/messages`

`listAccountCaseMessages`

## 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.

`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.

`CanonicalPartnerBearer`

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

## Parameters

Name

Location

Requirement

Schema

`id`

path

Required

{"type":"string"}

`channel`

Partner bearer calls must select partner_notice. Account/session clients use hosted_thread; omission preserves existing account clients.

query

Optional

{"type":"string","enum":["hosted_thread","partner_notice"]}

## Responses

### 200

Authorized result.

application/json

```json
{
  "$ref": "#/components/schemas/CanonicalListAccountCaseMessagesResponse",
  "type": "object",
  "properties": {
    "data": {
      "anyOf": [
        {
          "$ref": "#/components/schemas/CanonicalHostedThreadList",
          "type": "object",
          "properties": {
            "threads": {
              "type": "array",
              "items": {
                "$ref": "#/components/schemas/CanonicalHostedThread",
                "type": "object",
                "properties": {
                  "id": {
                    "type": "string"
                  },
                  "category": {
                    "type": "string"
                  },
                  "visibility": {
                    "type": "string"
                  },
                  "status": {
                    "type": "string"
                  },
                  "createdAt": {
                    "type": "string"
                  },
                  "updatedAt": {
                    "type": "string"
                  },
                  "closedAt": {
                    "type": "string"
                  },
                  "canReply": {
                    "type": "boolean"
                  },
                  "proceduralRequest": {
                    "type": "object",
                    "properties": {
                      "id": {
                        "type": "string"
                      },
                      "kind": {
                        "type": "string"
                      },
                      "requestedRelief": {
                        "type": "string"
                      },
                      "status": {
                        "type": "string",
                        "enum": [
                          "awaiting_response",
                          "ready_for_decision",
                          "deciding",
                          "decided",
                          "referred",
                          "recovery_hold",
                          "human_attention",
                          "administrator_queue",
                          "reserved_for_tribunal"
                        ],
                        "description": "administrator_queue is pending limited Rule 2.6 administration. reserved_for_tribunal acknowledges a request kept for the Tribunal without a ruling or effect. Neither is an adjudicated referral."
                      },
                      "responseDueAt": {
                        "type": "string"
                      },
                      "canRule": {
                        "type": "boolean"
                      },
                      "canWithdraw": {
                        "type": "boolean"
                      },
                      "withdrawnAt": {
                        "type": "string"
                      },
                      "deadlineTarget": {
                        "$ref": "#/components/schemas/ProceduralDeadlineTarget"
                      },
                      "deadlineDeferral": {
                        "$ref": "#/components/schemas/ProceduralDeadlineDeferral"
                      },
                      "assignedAuthority": {
                        "$ref": "#/components/schemas/ProceduralAuthority"
                      },
                      "ruling": {
                        "$ref": "#/components/schemas/ProceduralPublicRuling"
                      }
                    }
                  },
                  "messages": {
                    "type": "array",
                    "items": {
                      "$ref": "#/components/schemas/CanonicalHostedMessage"
                    }
                  }
                },
                "required": [
                  "id",
                  "category",
                  "visibility",
                  "status",
                  "createdAt",
                  "updatedAt",
                  "canReply",
                  "messages"
                ]
              }
            }
          },
          "required": [
            "threads"
          ]
        },
        {
          "$ref": "#/components/schemas/CanonicalPartnerMessageList",
          "type": "object",
          "properties": {
            "messages": {
              "type": "array",
              "items": {
                "$ref": "#/components/schemas/PartnerProceduralMessage",
                "type": "object",
                "additionalProperties": false,
                "required": [
                  "schemaVersion",
                  "id",
                  "caseId",
                  "partnerId",
                  "senderKind",
                  "senderCredentialPublicId",
                  "category",
                  "text",
                  "evidenceIds",
                  "messageDigest",
                  "recordEffect",
                  "createdAt"
                ],
                "properties": {
                  "schemaVersion": {
                    "type": "string",
                    "const": "partner-procedural-message-v2"
                  },
                  "id": {
                    "type": "string"
                  },
                  "caseId": {
                    "type": "string"
                  },
                  "partnerId": {
                    "type": "string"
                  },
                  "senderKind": {
                    "type": "string",
                    "enum": [
                      "party",
                      "platform"
                    ]
                  },
                  "senderSide": {
                    "type": "string",
                    "enum": [
                      "claimant",
                      "respondent"
                    ]
                  },
                  "senderCredentialPublicId": {
                    "type": "string",
                    "description": "Public credential identity; the internal persistence identifier is never returned."
                  },
                  "category": {
                    "type": "string",
                    "enum": [
                      "clarification_request",
                      "clarification_response",
                      "evidence_request",
                      "procedural_notice",
                      "settlement_coordination"
                    ]
                  },
                  "text": {
                    "type": "string",
                    "minLength": 1,
                    "maxLength": 2000
                  },
                  "replyToMessageId": {
                    "type": "string",
                    "minLength": 1,
                    "maxLength": 200
                  },
                  "evidenceIds": {
                    "type": "array",
                    "maxItems": 8,
                    "uniqueItems": true,
                    "items": {
                      "type": "string",
                      "minLength": 1,
                      "maxLength": 200
                    }
                  },
                  "messageDigest": {
                    "type": "string",
                    "pattern": "^[a-f0-9]{64}$"
                  },
                  "recordEffect": {
                    "type": "string",
                    "const": "none"
                  },
                  "createdAt": {
                    "type": "string",
                    "format": "date-time"
                  }
                }
              }
            },
            "recordEffect": {
              "type": "string",
              "const": "none"
            }
          },
          "required": [
            "messages",
            "recordEffect"
          ]
        }
      ]
    },
    "requestId": {
      "type": "string"
    }
  },
  "required": [
    "data",
    "requestId"
  ]
}
```

## Example response

### Successful response

```json
{
  "data": {
    "threads": [
      {
        "id": "id_test",
        "category": "category_test",
        "visibility": "visibility_test",
        "status": "status_test",
        "createdAt": "createdAt_test",
        "updatedAt": "updatedAt_test",
        "canReply": false,
        "messages": [
          {
            "id": "id_test",
            "sender": {
              "label": "label_test",
              "role": "role_test"
            },
            "body": "Could you share the carrier’s proof-of-delivery record for order #1042?",
            "createdAt": "createdAt_test"
          }
        ]
      }
    ]
  },
  "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.

## Request examples

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

```sh
curl --request GET \
  --url 'https://peoplescourt.ai/api/cases/pcase_test_123/messages' \
  --header 'Cookie: arb_session=COPY_ACCOUNT_SESSION'
```

```ts
const response = await fetch("https://peoplescourt.ai/api/cases/pcase_test_123/messages", {
  method: "GET",
  headers: {
    "Cookie": "arb_session=COPY_ACCOUNT_SESSION"
  },
});
if (!response.ok) throw await response.json();
const result = await response.json();
```

```python
import requests

response = requests.get(
    "https://peoplescourt.ai/api/cases/pcase_test_123/messages",
    headers={
      "Cookie": "arb_session=COPY_ACCOUNT_SESSION"
    },
    timeout=30,
)
response.raise_for_status()
result = response.json()
```