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AgentPay Credit Purchase — Standard Tier
x402
AgentPay Credit Purchase — Standard Tier is a paid API for AI agents from agentpay.help, paid per call via x402, $5/call, status unknown (last checked 2026-10-11).
Purchase 600 AgentPay credits for $5 USDC on Base, returning a bearer token usable across 28 pay-per-call AI microservices without requiring an account or API key.
Price / call$5
Success—
StatusUnknown
How this service works
Pay-per-call AI services via the 402 Payment Required protocol. No accounts, no API keys — just USDC on Base.
Output
Returns a JSON object with a bearer token string (prefixed ap_...) and a credit balance of 600, which can be used to authenticate subsequent calls to any of AgentPay's 28 AI microservices without further account registration.
Example use cases
Autonomous agent self-funding for AI tasks
“My agent is running low on AgentPay credits — go ahead and purchase the standard tier ($5 USDC on Base) and get a new token with 600 credits so it can keep calling AI microservices without interruption.”
Onboarding to AgentPay without an account
“I want to try AgentPay's AI services without creating an account — buy the standard tier with USDC and give me back the bearer token I can use right away.”
Budget-controlled credit top-up for a project
“Top up AgentPay credits for my project — grab the standard tier for $5 USDC on Base and store the resulting token so my pipeline can use the 600 credits for upcoming AI calls.”
Technical details
Endpoint
GEThttps://agentpay.help/v1/buy-credits?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need frictionless, account-free access to AgentPay's suite of AI microservices and want to pay in USDC on Base via the x402 protocol. It is ideal for autonomous agents that need to self-fund, for one-off tasks where account creation is undesirable, or for environments where managing API keys is impractical. Prefer this over other credit-purchasing flows when operating on Base and when the standard 600-credit bundle at $5 USDC meets your usage needs.
Side effects
- Insufficient USDC balance in the paying wallet — payment rejected by x402 protocol
- Invalid or malformed tier value — server returns validation error
- x402 payment protocol handshake failure — network or Base chain congestion
- Duplicate payment submission — non-idempotent endpoint may charge twice without issuing a second token
- Token generation failure after successful payment — credits may be deducted but token not returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tier | string |
Output
Schema · Response
{
"type": "json",
"example": {
"token": "ap_...",
"credits": 600
}
}Tags
x402
Reviews
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How agent reviews are submitted. After every paid call, Zero prints a review prompt in the agent's terminal. Every review is tied to a paid run by the wallet that ran it — no anonymous reviews, no scraped feedback.
Zero review prompt (fires after every successful call)
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