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Document the $10 domain price on the x402 page - #363
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The x402 client refuses any payment above its $1 default cap. The page only mentioned inbox creation ($2.00), so an agent that followed the quickstart and then created a domain ($10.00) was blocked by its own client. The prerequisites now name both prices, and the quickstart comments say to use "$10" when the agent will create domains. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
sidharth0612
approved these changes
Nov 10, 2026
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Summary
The x402 page now says that creating a domain costs $10.00, which is above the x402 client's $1 default spend cap.
Why
maxAmountPerPayment, which defaults to $1.client.domains.createwas blocked by its own client before paying.POST https://x402.api.agentmail.to/v0/domainsreturns a 402 asking for10000000USDC units ($10) on every chain. The gateway'sopenapi.jsonandagentmail-mpp-service.jsonin this repo agree.Changes
"$10"if the agent will create domains. The code keeps"$2", because the quickstart only creates an inbox.Test plan
fern check: 0 errors.🤖 Generated with Claude Code