---
title: "Submit bid synchronously"
method: POST
path: "/api/v1/auctions/{id}/bids"
tags: ["Bids"]
---

# Submit bid synchronously

`POST /api/v1/auctions/{id}/bids`

Submit a bid for an auction with immediate processing. Requires authentication with bid permissions.

## Path parameters

- `id` string, required — Auction ID

## Request body

- object
  - `amount` string, required — Bid amount in wei
  - `quantity` integer, required — Requested quantity
  - `maxGasPrice` string — Maximum gas price in wei
  - `metadata` object — Additional bid metadata

## Response `201`

Bid submitted successfully

- object
  - `success` true, required
  - `timestamp` number, required
  - `bid` object, required
    - `id` string, required — Unique bid identifier
    - `auctionId` string, required — Associated auction ID
    - `amount` string, required — Bid amount in wei
    - `quantity` integer, required
    - `status` 'pending' | 'queued' | 'processing' | 'accepted' | 'rejected' | 'partial', required
    - `timestamp` number, required — Bid submission timestamp
    - `estimatedGasCost` string, required — Estimated gas cost in wei
    - `queuePosition` integer, required — Position in processing queue
  - `message` string, required — Success message

## Other responses

- `401` — Unauthorized - Invalid or missing API key
- `403` — Forbidden - Insufficient permissions
- `429` — Too Many Requests - Rate limit exceeded
- `500` — Internal Server Error

---

[API](https://skmtc.net/manifoldfinance/apis/xga-auction-system-api.md) · [All operations](https://skmtc.net/manifoldfinance/apis/xga-auction-system-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/manifoldfinance/xga-auction-system-api/revisions/329190dccb50/schema)