# Mark Chat Read

Source: https://recoupable.dev/docs/api-reference/sessions/mark-chat-read

Marks a session chat as read for the authenticated account.

## POST /api/sessions/{sessionId}/chats/{chatId}/read

Full OpenAPI specification: https://recoupable.dev/docs/spec/sessions.json

## Authentication

This operation requires one of the security alternatives in the specification below. Security scheme definitions are included where present in the published specification.

[Authentication guide](https://recoupable.dev/docs/authentication)

## Operation and referenced schemas

```json
{
  "openapi": "3.1.0",
  "info": {
    "title": "Recoup API - Sessions",
    "description": "Sessions — sandboxed runs of an LLM-driven agent with tool use, lifecycle hooks, and persistence. Each session pairs one Vercel Sandbox with one or more chat threads.",
    "license": {
      "name": "MIT"
    },
    "version": "1.0.0"
  },
  "servers": [
    {
      "url": "https://api.recoupable.dev"
    }
  ],
  "security": [
    {
      "ApiKeyAuth": []
    },
    {
      "BearerAuth": []
    }
  ],
  "paths": {
    "/api/sessions/{sessionId}/chats/{chatId}/read": {
      "post": {
        "operationId": "markChatRead",
        "summary": "Mark chat as read",
        "description": "Records that the authenticated account has read this chat up to the current timestamp. This upserts a row in `chat_reads` setting `last_read_at = now()`. After a successful call the `hasUnread` flag for this chat will be `false` in subsequent `GET /api/sessions/{sessionId}/chats` responses.",
        "parameters": [
          {
            "name": "sessionId",
            "in": "path",
            "required": true,
            "description": "The id of the parent session.",
            "schema": {
              "type": "string"
            }
          },
          {
            "name": "chatId",
            "in": "path",
            "required": true,
            "description": "The id of the chat to mark as read.",
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Chat marked as read successfully.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/MarkChatReadResponse"
                }
              }
            }
          },
          "401": {
            "description": "Unauthorized — invalid or missing API key / Bearer token.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          },
          "403": {
            "description": "Forbidden — the authenticated account does not own this session.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          },
          "404": {
            "description": "Not found — no session exists with the given id, the chat does not exist, or the chat belongs to a different session.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          },
          "500": {
            "description": "Server error — the read record could not be persisted.",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "MarkChatReadResponse": {
        "type": "object",
        "required": [
          "success"
        ],
        "properties": {
          "success": {
            "type": "boolean",
            "enum": [
              true
            ]
          }
        }
      },
      "Error": {
        "type": "object",
        "required": [
          "status",
          "error"
        ],
        "properties": {
          "status": {
            "type": "string",
            "enum": [
              "error"
            ],
            "description": "Always `\"error\"` for error responses."
          },
          "error": {
            "type": "string",
            "description": "Human-readable error message."
          }
        }
      }
    },
    "securitySchemes": {
      "ApiKeyAuth": {
        "type": "apiKey",
        "in": "header",
        "name": "x-api-key"
      },
      "BearerAuth": {
        "type": "http",
        "scheme": "bearer"
      }
    }
  }
}
```