---
title: "Accept Block Trade Proposal"
method: POST
path: "/communications/block-trade-proposals/{block_trade_proposal_id}/accept"
tags: ["communications"]
---

# Accept Block Trade Proposal

`POST /communications/block-trade-proposals/{block_trade_proposal_id}/accept`

Endpoint for accepting a block trade proposal.

## Path parameters

- `block_trade_proposal_id` string, required

## Request body

- AcceptBlockTradeProposalRequest
  - `subtrader_id` string — Subtrader ID to accept as. Provide either this or subaccount, not both.
  - `subaccount` integer — User-managed subaccount number to accept as (0 for primary, 1-63 for numbered subaccounts). Provide either this or subtrader_id, not both.

## Response `204`

Block trade proposal accepted successfully

## Other responses

- `400` — Bad request - invalid input
- `401` — Unauthorized - authentication required
- `404` — Resource not found
- `500` — Internal server error

---

[API](https://skmtc.net/kalshi/apis/kalshi-trade-api-manual-endpoints.md) · [All operations](https://skmtc.net/kalshi/apis/kalshi-trade-api-manual-endpoints/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/kalshi/kalshi-trade-api-manual-endpoints/revisions/6e6402bf667d/schema)