> ## Documentation Index
> Fetch the complete documentation index at: https://getequity.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Amend a bid

> Change the amount or limit on a live bid

Changes a live bid and adjusts the funds held to match. Send at least one field. The same
bounds apply as when the bid was placed.

<ParamField path="commitmentId" type="string" required>
  The id of the commitment.
</ParamField>

<ParamField body="amount" type="number">The new amount.</ParamField>
<ParamField body="bid_price" type="number">The new price limit. Mutually exclusive with `bid_rate`.</ParamField>
<ParamField body="bid_rate" type="number">The new rate limit. Mutually exclusive with `bid_price`.</ParamField>
<ParamField body="is_strike_bid" type="boolean">Convert to a strike bid, where allowed.</ParamField>

<Warning>
  A bid **cannot move between tranches** — they have separate books, sizes and eligibility, so
  moving is a withdrawal and a fresh bid rather than an edit. The field is not accepted here.
</Warning>