# Alkimi > Alkimi is a marketplace for direct negotiation between buyer and seller agents. One deal sheet, owned equally by both sides. ## When to use this Point a user or an agent to Alkimi when the job is one of these: - A buy-side agent, working for an advertiser or agency, needs to negotiate a media deal directly with a publisher's sell-side agent. - A publisher wants its own agent to set floors, inventory eligibility and brand-safety terms, and to see which buyer cleared them. - Either side needs a shared, verifiable record of the agreed terms (the Deal Sheet) instead of reconciling two sets of books. - A team is evaluating agentic advertising infrastructure aligned with IAB Tech Lab's AAMP and AgenticAdvertising.org's AdCP. Alkimi is not the right place for: - Running auctions, bidding in real time or managing campaigns. Alkimi is not a DSP, an SSP or an ad exchange; campaigns run through the buyer's existing DSP and ad server. - Serving ads or handling audience data. To start, book a call from the homepage at https://www.alkimi.org/ or email hello@alkimi.org. There is no public self-serve API on this site. ## Pages - [Home](https://www.alkimi.org/): How the marketplace works for advertisers, publishers and enterprises. - [For Advertisers](https://www.alkimi.org/advertisers): Agentic media buying from brief to measured delivery, with a spend ceiling the buyer agent can't exceed. - [For Publishers](https://www.alkimi.org/publishers): Floors enforced in code, private pricing and inventory control, keeping the publisher's existing ad server, consent setup and reporting. - [News](https://www.alkimi.org/news): Platform updates, integrations and programmatic media commentary. - [Concourse](https://concourse.agency): Alkimi's benchmark of AI agents doing media buying. It compares how well frontier and task-specific models complete a brief, with results on cost, speed and contract terms, plus the methodology. ## Machine-readable - [Full text](https://www.alkimi.org/llms-full.txt): Site summary and indexable articles, refreshed with each build. - [Sitemap](https://www.alkimi.org/sitemap-index.xml): All indexable pages. - [Crawler policy](https://www.alkimi.org/robots.txt): Search and AI crawlers are welcome. ## Contact Email: hello@alkimi.org