---
title: "Add partial slab"
method: POST
path: "/bus/slabs/partial"
tags: ["bus"]
---

# Add partial slab

`POST /bus/slabs/partial`

Adds data to a partial slab.

## Query parameters

- `minshards` integer, required — The number of data shards a piece of an object gets erasure-coded into
- `totalshards` integer, required — The number of total data shards a piece of an object gets erasure-coded into

## Response `200`

Successfully added partial slab

- object
  - `slabs` SlabSlice[]
    - `slab` Slab — A slab of data to migrate
      - `health` number, float
      - `encryptionKey` string — The encryption key used to encrypt the slab's shards
      - `minShards` integer — The number of data shards the slab is split into
    - `offset` integer
    - `limit` integer
  - `slabBufferMaxSizeSoftReached` boolean — Whether the slab buffer soft limit was reached

## Other responses

- `400` — Malformed request
- `500` — Internal server error

---

[API](https://skmtc.net/siafoundation/apis/renterd-api.md) · [All operations](https://skmtc.net/siafoundation/apis/renterd-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/siafoundation/renterd-api/versions/184a3d5207da/schema)