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agent-exec Pay-Per-Use Code Execution (Large Plan)
x402
agent-exec Pay-Per-Use Code Execution (Large Plan) is a paid API for AI agents from agent-exec.45.67.221.128.sslip.io, paid per call via x402, $0.0125/call, status unknown (last checked 2026-09-15).
Executes submitted source code in an isolated, network-less sandbox on the large plan tier via HTTP 402 micropayment, returning stdout, stderr, and exit code
Price / call$0.0125
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. This capability is scoped to plan=large.
Output
Returns a JSON object containing a UUID storage ID (retrievable via GET /storage/{id}), the plan used ('large'), an expiry timestamp in Unix milliseconds, and a payment receipt object with the payer wallet address, amount charged in atomic USDC units, settlement network, and on-chain transaction hash.
Example use cases
Heavy computation for an AI pipeline
“I need to run a numerically intensive Python script that factors a large semiprime number — it needs more memory and CPU than a small sandbox. Execute it on the large plan and give me the result printed to stdout.”
On-the-fly data transformation without infra
“Can you execute this data-cleaning script for me? It reformats a JSON blob into a normalized CSV. Use the large plan so it has enough headroom, and send me back whatever gets printed plus any errors.”
Agent self-testing generated code
“I just generated some code to solve a dynamic programming problem — run it on the large sandbox so I can see if it produces the right answer and whether it errors out, without me having to set up any environment.”
Technical details
Endpoint
POSThttps://agent-exec.45.67.221.128.sslip.io/storage?plan=largeWhen to prefer
Choose the large plan over small or medium when the code being executed is computationally intensive, memory-hungry, or expected to run for longer durations. Prefer this endpoint over traditional cloud execution environments when no account or API key is available and you want to pay only for what you use via a USDC micropayment. Ideal for AI agents that need ephemeral, one-off code execution without provisioning infrastructure.
Side effects
- Insufficient payment or invalid x402 payment header returns 402 Payment Required
- Code that exceeds the large plan's resource limits may be killed, returning a non-zero exit code or timeout error
- Network access from within the sandbox is blocked; code requiring internet will fail
- Expired or already-used payment tokens will be rejected
- Malformed source code causes non-zero exit code in stderr output
- Storage object may expire before retrieval if not fetched before expiresAt timestamp
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| idrequired | string | Pass as GET /storage/{id} to read this object back. A UUID for a paid POST /storage; `free:<your wallet address>` for the one object POST /storage/free maintains -- stable across every free renewal for that wallet. |
| planrequired | string | One of the paid plans (small/medium/large) from POST /storage, or "free" from POST /storage/free. |
| label | — | The label you passed as ?label=, stored verbatim, or null if you passed none. Echoed back so you can confirm what was stored rather than assuming it. |
| payment | object | Only present for a paid POST /storage write. Absent for POST /storage/free -- nothing was charged. |
| expiresAtrequired | integer | Unix ms this object stops being retained. |
Tags
x402
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