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agent-exec Distributed Lock Claim (POST /claim)
x402
agent-exec Distributed Lock Claim (POST /claim) is a paid API for AI agents from agent-exec.448c.net, paid per call via x402, $0.0052/call, status unknown (last checked 2026-10-11).
Acquires a named, time-bounded distributed lock (hold) on a key for a specified plan duration, billed per attempt via HTTP 402 micropayment.
Price / call$0.0052
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
Returns a JSON object with: 'outcome' ('acquired' if the lock was won, 'held' if already taken), a 'claim' object with the key, holder, acquiredAt, and expiresAt timestamps, an optional 'mine' boolean (true when you already held it — useful for crash-resume), the 'plan' used, and a 'payment' receipt containing the payer wallet, amount charged, asset, network, and transaction hash. The call is billed whether or not the lock was won.
Example use cases
Single-agent job deduplication
“Claim the key 'invoice-processor' with a day-long hold for my process 'node-1' so no other instance picks up the same invoices — I want to know if I already held it after my last crash.”
Coordinated multi-agent pipeline step
“I need to lock the key 'etl-step-3' for a week under holder 'pipeline-runner-7' so only one agent advances that pipeline stage at a time — charge my wallet for the attempt.”
Crash-resume detection for a background worker
“Try to claim a one-hour hold on 'report-gen-weekly' for holder 'cron-agent-2' and tell me whether I'm already the one holding it, so I know whether to resume or wait.”
Technical details
Endpoint
POSThttps://agent-exec.448c.net/claim?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need accountless, pay-per-use distributed locking with no registration overhead. Prefer it over traditional lock services when operating as an autonomous agent with a crypto wallet (x402/USDC), when you need crash-resume detection via the 'mine' flag, or when you cannot pre-provision API keys. Not suitable for sub-millisecond locking latency or high-frequency contention scenarios where per-attempt billing would be costly.
Side effects
- Payment insufficient or missing — HTTP 402 with payment requirements
- Key name contains a '/' character — rejected as invalid
- Plan enum value not one of hour/day/week — validation error
- Holder or key exceeds 256 UTF-8 bytes — rejected
- Network/blockchain settlement failure — payment may not be confirmed
- Race condition: another agent acquires the key between payment and commit — outcome is 'held', payment still charged
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| keyrequired | string | 1..256 UTF-8 bytes, no '/' character -- the name you want to hold, scoped to your own paying wallet. |
| planrequired | string | Which plan to buy -- see x-payment-info.pricing for each plan's hold duration and price. |
| holderrequired | string | 1..256 UTF-8 bytes -- an id identifying which of your own processes is claiming it. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| mine | boolean | Only present when `outcome` is "held": true when the existing holder is YOU -- a crash-resume or duplicated retry, the exact signal this product is sold to give. |
| planrequired | string | One of the paid plans (hour/day/week) from POST /claim, or "free" from POST /claim/free. |
| claimrequired | object | The current hold on this key -- yours if `outcome` is "acquired", or the existing holder's if `outcome` is "held". Never carries a wallet: the caller already knows its own. |
| outcomerequired | string | "acquired": you won the key (201). "held": somebody already holds it (200) -- NOT an error, see `mine`. |
| payment | object | Present on both outcomes of the PAID `POST /claim` -- the attempt is billed whether or not you won the key, so a "held" response still carries the receipt for the charge you incurred. Absent only from `POST /claim/free`, which never settles a payment. |
Tags
x402
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