# Can AI agents buy from Dappier? Yes. An agent can buy Dappier's API on its own, and the smallest purchase needs no registration: buy a small anonymous credit over a wallet rail and call with its receipt. For a larger balance, register a free agent credential, buy Prepaid credits from $0.01 on a wallet rail or $0.50 by card, and call Real Time Search, listed at $0, with the bearer. ## At a glance - **Endpoint:** `POST https://agents.dappier.com/zcj/37568139tp3g/zeroclick/aimodel/am_01j06ytn18ejftedz6dyhz2b15` (Real Time Search) - **Body:** `{"query": ""}`. `query` is the only field. - **Price:** listed at $0. Every call still needs a receipt's credit or a Prepaid credits balance. - **Without registering:** buy a small anonymous credit from a wallet, then send `Authorization: Receipt `. - **With an agent credential:** buy Prepaid credits from $0.01 on a wallet rail or $0.50 by card, then send `Authorization: Bearer `. - **Response:** `200` with a JSON object whose `message` field holds the answer text. - **Full purchase flow:** [the buyer skill](https://agents.dappier.com/zcj/37568139tp3g/SKILL.md) ## Use the Dappier API without an account The receipt from an anonymous credit purchase is the credential, so you need no registration and no API key. The `credits` plan in [the catalog](https://agents.dappier.com/zcj/37568139tp3g/manifest.json) advertises the credit under `purchase.anonymousCredit`. Buy it at the plan's purchase URL with no `Authorization` header, and the successful response carries `receiptId`; [the buyer skill](https://agents.dappier.com/zcj/37568139tp3g/SKILL.md) has the payment steps. Store the receipt privately, because losing it loses the remaining credit. Then call Real Time Search with it: ```http POST https://agents.dappier.com/zcj/37568139tp3g/zeroclick/aimodel/am_01j06ytn18ejftedz6dyhz2b15 Authorization: Receipt Content-Type: application/json {"query": "What happened in the news today?"} ``` The response is `200` with a JSON object holding `message`, the answer text. It also carries a `zc-billing` header with `fundingSource`, `chargedUsd` and `remainingCreditUsd`. A receipt has limits: - It spends only its own balance. - It cannot be topped up and cannot reach the identity endpoints. - When its balance cannot cover a call, the answer is `receipt_credit_exhausted` or `receipt_credit_insufficient` (402). Buy a new receipt. - Card payments and other amounts need an agent credential. ## Buy Prepaid credits with an agent credential For a larger balance, top-ups or a card, register a free agent credential through [agent identity](https://agents.dappier.com/zcj/37568139tp3g/auth.md); no email is needed to start. Buy Prepaid credits with that bearer, a whole-cent amount of at least $0.01 from a wallet or $0.50 by card, then call with `Authorization: Bearer `. A card purchase can go through a hosted checkout page that a browser agent or a person pays, as [card payments](https://agents.dappier.com/zcj/37568139tp3g/payment/card.md) describes. Add credit later with `POST https://agents.dappier.com/zcj/37568139tp3g/extend`, and list what you already hold with `GET https://agents.dappier.com/zcj/37568139tp3g/agent/entitlements` before buying again. If you never claim an anonymous credential, it lapses within days and takes its purchases with it. Claiming it to a verified email keeps the credential and what it bought. ## What is charged, and when - Paying a 402 completes a purchase and accepts the platform's buyer terms. - Queries are sold on credit, not one by one. A call with no credential returns `401 bearer_required`, and a credential with no covering plan returns `403 plan_required`. - Calls draw down the balance, and unused funds remain credit. ## Frequently asked questions ### Can an agent use Dappier's API without signing up? Yes. Buy a small anonymous credit from a wallet and present its `receiptId` as `Authorization: Receipt `. The receipt is the credential, so no registration is needed. Larger balances, top-ups and card payments need a free agent credential. ### Can I pay for Dappier's real-time search API with x402? Yes. x402 on Base USDC and MPP on Tempo USDC both buy the anonymous credit and Prepaid credits. Card payment is for Prepaid credits only, at $0.50 or more, with a bearer credential. ### What happens when a receipt runs out? The call returns `receipt_credit_exhausted` or `receipt_credit_insufficient` (402). A receipt cannot be topped up. Buy a new one, or register a credential and buy a larger balance of Prepaid credits. ### Is there a way in without a wallet? Yes. With a registered agent credential, pay for Prepaid credits by card on a hosted checkout page that a browser agent or a person completes. The card minimum is $0.50. ## Keep reading - [The buyer skill](https://agents.dappier.com/zcj/37568139tp3g/SKILL.md): the full purchase and recovery flow - [How to pay](https://agents.dappier.com/zcj/37568139tp3g/payment.md): each rail and the 402 body - [Agent identity](https://agents.dappier.com/zcj/37568139tp3g/auth.md): register, claim and exchange a credential - [Error reference](https://agents.dappier.com/zcj/37568139tp3g/errors.md): every error code and what to do - [Catalog](https://agents.dappier.com/zcj/37568139tp3g/manifest.json): live services, plans and prices --- Updated 2026-10-16. All Dappier guides: https://agents.dappier.com/guides.md. Storefront: https://agents.dappier.com/zcj/37568139tp3g/llms.txt.