---
title: "Returns the fast bid multiplier currently applied to an external booster campaign."
method: GET
path: "/campaign/boost/{externalCampaignId}/fast-bid-multiplier"
tags: ["Campaign"]
---

# Returns the fast bid multiplier currently applied to an external booster campaign.

`GET /campaign/boost/{externalCampaignId}/fast-bid-multiplier`

Returns the downstream system's default (1.0) if the multiplier has never been set
 for the campaign.

## Path parameters

- `externalCampaignId` integer, required

## Response `200`

OK

- GetFastBidMultiplierEndpointOutput
  - `externalCampaignId` integer, required — The external campaign id reported by the downstream system.
  - `bidMultiplierValue` number, double, required — The current bid multiplier reported for the campaign.

## Other responses

- `400` — Bad Request
- `401` — Unauthenticated
- `403` — Forbidden

## Changes

- **2026-09-04** `9da534659e5f` — 1 info
  - the security scope `api` was added to the endpoint's security scheme `OpenIdConnect`

[Change history](https://skmtc.dev/rapidata/apis/rapidata-api/changes/campaign/boost/:externalCampaignId/fast-bid-multiplier/get.md)

---

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