---
title: "Upload one immutable declared chunk without creating live content"
method: PUT
path: "/api/preview/import/runs/{id}/chunks/{index}"
tags: ["import"]
---

# Upload one immutable declared chunk without creating live content

`PUT /api/preview/import/runs/{id}/chunks/{index}`

## Request

- Base URL: `https://symbol.chat` (the document declares no server; this is the origin it was published from)
- URL: `https://symbol.chat/api/preview/import/runs/{id}/chunks/{index}`
- Auth: one of:
  - HTTP bearer
  - API key in cookie `__Secure-next-auth.session-token`
  - OAuth 2
    - Authorization code: `https://mcp.symbol.chat/authorize`
    - Token URL: `https://mcp.symbol.chat/token`

## Path parameters

- `id` string, required: UUID v4 string
- `index` string, required

## Request body

- object
  - `files` object[], required: The files to import, read client-side (a .zip or folder is unpacked in the browser). CSV: usually one file. Markdown: one capsule per `.md` file. Symbol export: the `symbol-manifest.json` manifest plus its `.md` files.
    - `content` string, required
    - `path` string, required

## Response `200`

Successful response

- object
  - `revision` integer, required

## Changes

- **2026-11-08** `fd7b0a7085e4`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/symbol-chat/apis/symbol-api/changes/api/preview/import/runs/:id/chunks/:index/put.md)

---

[API](https://skmtc.dev/symbol-chat/apis/symbol-api.md) - [All operations](https://skmtc.dev/symbol-chat/apis/symbol-api/llms.txt) - [OpenAPI document](https://skmtc.dev/symbol-chat/apis/symbol-api/revisions/3ae8310b31e1?raw)