---
title: "Add/merge memory bank background (removed — use PATCH .../config)"
method: POST
path: "/v1/default/banks/{bank_id}/background"
tags: ["Banks"]
deprecated: true
---

# Add/merge memory bank background (removed — use PATCH .../config)

`POST /v1/default/banks/{bank_id}/background`

## Request

- Base URL: `https://hindsight.vectorize.io` (the document declares no server; this is the origin it was published from)
- URL: `https://hindsight.vectorize.io/v1/default/banks/{bank_id}/background`
- Auth: none declared
- TypeScript: <https://skmtc.dev/vectorize/apis/hindsight-http-api/docs/v1/default/banks/:bank_id/background/post.ts> (a function with typed inputs; its response is checked against the schema)

> **Deprecated.**

**Removed.** The bank background was folded into the reflect mission. Write it with PATCH /v1/default/banks/{bank_id}/config as `reflect_mission`. That call replaces the value rather than merging into it, so read the current mission from GET .../config first if you relied on this endpoint's append behaviour.

## Path parameters

- `bank_id` string, required

## Headers

- `authorization` string, nullable

## Request body

- AddBackgroundRequest: Request model for adding/merging background information. Deprecated: use SetMissionRequest instead.
  - `content` string, required: New background information to add or merge
  - `update_disposition` boolean: Deprecated - disposition is no longer auto-inferred from mission

## Response `200`

Successful Response

- BackgroundResponse: Response model for background update. Deprecated: use MissionResponse instead.
  - `mission` string, required
  - `background` string, nullable: Deprecated: same as mission
  - `disposition` DispositionTraits: Disposition traits that influence how memories are formed and interpreted.
    - `skepticism` integer, required: How skeptical vs trusting (1=trusting, 5=skeptical)
    - `literalism` integer, required: How literally to interpret information (1=flexible, 5=literal)
    - `empathy` integer, required: How much to consider emotional context (1=detached, 5=empathetic)

## Other responses

- `422`: Validation Error

## Changes

- **2026-10-04** `4fda98b75f63`: 1 warning
  - removed the optional property `detail/items/url` from the response with the `422` status
- **2026-05-15** `0d08f271b9db`: 3 info
  - added the optional property `detail/items/ctx` to the response with the `422` status
  - added the optional property `detail/items/input` to the response with the `422` status
  - added the optional property `detail/items/url` to the response with the `422` status

[Operation history](https://skmtc.dev/vectorize/apis/hindsight-http-api/changes/v1/default/banks/:bank_id/background/post.md)

---

[API](https://skmtc.dev/vectorize/apis/hindsight-http-api.md) - [All operations](https://skmtc.dev/vectorize/apis/hindsight-http-api/llms.txt) - [OpenAPI document](https://skmtc.dev/vectorize/apis/hindsight-http-api/revisions/45e711cd0897?raw)