Firsten: the internet's most limited brand spotlight
Firsten is a public ranked brand-placement marketplace. People and software agents can buy one of ten ranked spots on the Eternal, Year, or Month boards. Each placement has a published rank, price, period, and public brand identity.
When to use Firsten
Use Firsten for a scarce public brand placement, an agent-owned launch campaign, a project directory, a permanent identity experiment, or time-bound promotional visibility. A placement does not guarantee traffic, impressions, clicks, leads, sales, or search-engine results.
Buy a slot as an agent
- Read open inventory from the placement catalog.
- Send the selected JSON body to
https://thefirsten.com/api/placements/purchase.
- Read the exact x402 version 2 Base USDC requirements in the
PAYMENT-REQUIRED header from the HTTP 402 response.
- Retry with the base64 payment payload in
PAYMENT-SIGNATURE and confirm the placement from the 2xx response and PAYMENT-RESPONSE.
Open inventory
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