> ## Documentation Index
> Fetch the complete documentation index at: https://docs.keebai.com/llms.txt
> Use this file to discover all available pages before exploring further.
# POST /v1/blocks/do-not
> Create a restrictions block with its content as plain text.
What the assistant must never do. Short, absolute rules — this block exists so the prohibitions are not buried inside a procedure.
The block is created in the project catalogue and is **not attached to anything**. Wire it into an assistant with [`POST /v1/assistants/{id}/blocks`](/dev/endpoints/assistants-block-attach) afterwards.
**Instruction block: an assistant can hold several.**
## Endpoint
```
POST https://api.keebai.com/v1/blocks/do-not
```
## Required scope
`assistants:write`
## Headers
| Header | Required | Value |
| --------------- | -------- | ------------------------ |
| `Authorization` | Yes | `Bearer kbai_pk_` |
| `Content-Type` | Yes | `application/json` |
## Body
| Field | Type | Required | Description |
| --------- | -------- | -------- | ----------------------------------------------------------------------------- |
| `name` | `string` | Yes | Up to 150 characters. What the block shows as in the portal. |
| `content` | `string` | No | The block's text, up to 100,000 characters. Omit it to create an empty block. |
`type` and `family` are not accepted: the type is the endpoint you called, and `family` is derived from it (`instructions` for this one).
## Example request
```bash curl theme={null}
curl -X POST https://api.keebai.com/v1/blocks/do-not \
-H "Authorization: Bearer kbai_pk_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" \
-H "Content-Type: application/json" \
-d '{
"name": "Restricciones",
"content": "- No inventar disponibilidad: siempre consultar antes de ofrecer un horario.\n- No dar precios de servicios que no están en el catálogo.\n- No pedir datos de tarjeta por chat."
}'
```
```js JavaScript theme={null}
const resp = await fetch("https://api.keebai.com/v1/blocks/do-not", {
method: "POST",
headers: {
Authorization: `Bearer ${process.env.KEEBAI_API_TOKEN}`,
"Content-Type": "application/json",
},
body: JSON.stringify({
name: "Restricciones",
content: "- No inventar disponibilidad: siempre consultar antes de ofrecer un horario.\n- No dar precios de servicios que no están en el catálogo.\n- No pedir datos de tarjeta por chat.",
}),
});
const { block } = await resp.json();
// Then wire it into an assistant.
await fetch("https://api.keebai.com/v1/assistants/6650a1b2c3d4e5f6a7b8c9d0/blocks", {
method: "POST",
headers: {
Authorization: `Bearer ${process.env.KEEBAI_API_TOKEN}`,
"Content-Type": "application/json",
},
body: JSON.stringify({ block_id: block._id }),
});
```
```python Python theme={null}
import os, requests
resp = requests.post(
"https://api.keebai.com/v1/blocks/do-not",
headers={"Authorization": f"Bearer {os.environ['KEEBAI_API_TOKEN']}"},
json={"name": "Restricciones", "content": "- No inventar disponibilidad.\n- No pedir datos de tarjeta por chat."},
timeout=10,
)
resp.raise_for_status()
block = resp.json()["block"]
```
## Response
### 201 Created
```json theme={null}
{
"block": {
"_id": "6650bbbb2222cccc3333dddd",
"type": "do_not",
"family": "instructions",
"name": "Restricciones",
"current_version_id": "6650ffff4444aaaa5555bbbb",
"is_archived": false,
"content_writable": true,
"created_at": "2026-07-26T21:38:22.104Z",
"updated_at": "2026-07-26T21:38:22.104Z"
}
}
```
### 400 Bad Request
Missing `name`, `content` over 100,000 characters, or a property the endpoint does not accept.
### 401 Unauthorized
Missing, invalid, revoked, or expired token.
### 403 Forbidden
The token does not have the `assistants:write` scope.
### 502 Bad Gateway
The assistant service is unreachable.
## Operational notes
* Adding the reason after a rule tends to make it hold better than the rule alone.
* **Creating a block also creates its first version.** The response already carries a `current_version_id`, even when you omit `content` — the block starts with one empty version rather than none.
* **Creation is not idempotent.** Nothing enforces unique names, so a retry after a timeout leaves you with two blocks. Check [the catalogue](/dev/endpoints/blocks-list) filtered by `type` before retrying.
* **Content is plain text with three markdown conventions**: `-` for bullets, `1.` for numbered items, `#` for headings. Everything else is a paragraph. [More on how content is stored](/dev/assistants/overview#content-is-text).
* **The block belongs to the token's project**, and a token on another project can neither see it nor read it by id.
## OpenAPI
````yaml POST /v1/blocks/do-not
openapi: 3.0.0
info:
title: Keebai Public API
description: Superficie pública REST autenticada con Personal Access Tokens (PAT).
version: 1.0.0
contact: {}
servers:
- url: https://api.keebai.com
description: Production
security: []
tags: []
paths:
/v1/blocks/do-not:
post:
tags:
- blocks
summary: Crear un bloque de restricciones
description: >-
Lo que el asistente no debe hacer nunca. Una restriccion por linea, con
su motivo si ayuda.
operationId: PublicBlocksController_createDoNot
parameters: []
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/PublicBlockCreateDto'
responses:
'201':
description: ''
content:
application/json:
schema:
$ref: '#/components/schemas/PublicBlockEnvelopeDto'
security:
- PAT: []
components:
schemas:
PublicBlockCreateDto:
type: object
properties:
name:
type: string
maxLength: 150
description: Nombre con el que el bloque aparece en el portal.
example: Tono cercano
content:
type: string
maxLength: 100000
description: >-
Contenido inicial en texto. Se reconocen listas con '-' y con '1.',
y encabezados con '#'. Sin este campo el bloque nace vacio.
required:
- name
PublicBlockEnvelopeDto:
type: object
properties:
block:
$ref: '#/components/schemas/PublicBlockDto'
required:
- block
PublicBlockDto:
type: object
properties:
_id:
type: string
type:
type: string
enum:
- personification
- objective
- response_format
- steps
- cases_possible
- do_not
- product_info
- store_info
- reservation_info
- tables_info
- tags
- response_policy
family:
type: string
enum:
- identity
- instructions
- information
description: >-
Se deriva del tipo y determina en que seccion del prompt entra el
bloque. Es de solo lectura.
name:
type: string
current_version_id:
type: string
nullable: true
description: >-
Version vigente del bloque. Su contenido se lee en GET
/v1/blocks/{id}/content.
is_archived:
type: boolean
content_writable:
type: boolean
description: >-
Si el contenido de este bloque se puede editar por API. Los tipos de
catalogo son de solo lectura porque su escritura depende de una
sincronizacion de funciones que vive en el portal.
created_at:
type: string
updated_at:
type: string
required:
- _id
- type
- family
- name
- current_version_id
- is_archived
- content_writable
- created_at
- updated_at
securitySchemes:
PAT:
scheme: bearer
bearerFormat: kbai_pk_
type: http
description: >-
Personal Access Token con prefijo `kbai_pk_`. Generar desde el portal
con permiso `developer.manage_tokens`.
````