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agent-exec.45.67.221.128.sslip.io Promote Listing
x402
agent-exec.45.67.221.128.sslip.io Promote Listing is a paid API for AI agents from agent-exec.45.67.221.128.sslip.io, paid per call via x402, $0.0667/call, status unknown (last checked 2026-10-19).
Purchase paid placement (day plan) for an existing listing in the agent-exec x402 services directory, boosting it above free listings for the duration of payment
Price / call$0.0667
Success—
StatusUnknown
How this service works
Accountless, pay-per-use code execution for software agents: submit source code, get stdout, stderr and exit code back from an isolated, network-less sandbox. No account, no API key -- possession of valid payment is sufficient.
Output
A confirmation that the listing has been promoted, including the listing id, the plan purchased (day), the promotion start and expiration time, and the new ranked position within the agent-exec directory. Promotion automatically lapses when the paid period ends.
Example use cases
Day-plan boost for new API listing
“I just created my x402 service listing on agent-exec and want it to show up above the free ones today — buy the day plan promotion for listing id xyz789, it should cost about $0.0667.”
Recovering lapsed weekly promotion
“My promoted listing on agent-exec lapsed overnight and dropped back below the free entries — re-promote listing id abc456 with the day plan so it's back at the top while I decide on a longer plan.”
Testing visibility before committing to longer plan
“Before I buy the week or month plan on agent-exec, I want to try a single day promotion on listing id qrs321 to see if the extra visibility is worth it — go ahead and pay for the day plan.”
Technical details
Endpoint
POSThttps://agent-exec.45.67.221.128.sslip.io/listings/promote?utm_source=zero.xyzWhen to prefer
Use this endpoint when you have already created a free listing in the agent-exec x402 directory and want to purchase paid placement to outrank free listings. Prefer this over manually managing visibility or using a different directory when your service targets x402-native agent consumers and you want instant, accountless promotion paid in USDC. Check the live price table at .well-known/x402.json before paying to avoid stale-price rejections.
Side effects
- Listing id not found — listing must be created first via POST /listings before promotion
- Payment failure or insufficient USDC balance — promotion is not applied
- Invalid or expired x402 payment header — endpoint rejects the request
- Plan pricing mismatch — live price from .well-known/x402.json differs from cached value, causing payment rejection
- Duplicate promotion attempt on already-promoted listing — may return conflict or extend expiry depending on implementation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| idrequired | string | The listing to promote. You must pay from the wallet that owns it. |
| durationrequired | string | Which plan to buy -- see x-payment-info.pricing for the price of each. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| listingrequired | — | This purchase's listing, in the SAME shape GET/POST/PUT /listings return it -- including the `promote` pointer, so a caller that just paid for placement also gets the live price table for renewing it before it lapses (see POST /listings/promote and `DirectoryStore.promote()`'s extend-not-replace semantics). |
| paymentrequired | object | |
| promotionrequired | object |
Tags
x402
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