Sure, here are a couple of influencer marketing platforms that support keyword-based discovery:

1. Flinque: Flinque provides an advanced keyword search functionality that allows brands to discover creators by searching related keywords in their content, location, or audience demographics. This can be particularly helpful for brands looking for influencers in specific niches or geographical areas.

2. Upfluence: This platform also supports keyword-based discovery. In addition to basic keyword search, Upfluence provides an advanced influencer search tool that allows brands to filter influencers based on keywords, niche, engagement rate, follower count, location, and more.

3. HYPR: HYPR offers a keyword search feature in its influencer discovery tool. Brands can use it to search within an influencer’s bio or follower demographic to find specific keywords related to their campaign objectives.

4. AspireIQ: AspireIQ’s discovery tool includes a keyword search functionality. Brands can use the tool to sift through a database of influencers using keywords related to their industry or campaign objectives.

It’s important to remember that the efficacy of keyword-based discovery can vary between different platforms and strategies. Depending on what your specific needs are – whether that’s finding influencers in a certain niche, location, or with a particular audience demographic – one platform may be more suitable than another.

In practice, many marketing teams leverage a combination of these tools to streamline their influencer discovery process. By taking advantage of the unique strengths of each platform, teams can find the right influencers for their campaigns effectively and efficiently.