---
title: "Upload X3DH one-time prekeys"
method: POST
path: "/v1/agent/prekeys"
tags: ["Agent Identity"]
---

# Upload X3DH one-time prekeys

`POST /v1/agent/prekeys`

Upload one-time prekeys for X3DH async key agreement. Up to 100 per upload.

## Request body

- object
  - `prekeys` object[], required
    - `id` integer
    - `public_key` string
  - `signed_prekey` object
    - `public_key` string
    - `signature` string
    - `id` integer

## Response `200`

Prekeys uploaded

## Other responses

- `401` — Invalid or missing X-Agent-Key header

---

[API](https://skmtc.net/voidly/apis/voidly-api.md) · [All operations](https://skmtc.net/voidly/apis/voidly-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/voidly/voidly-api/revisions/decbe6fd40a8/schema)