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AgentDrop Box Key Wait (Long Poll)
x402
AgentDrop Box Key Wait (Long Poll) is a paid API for AI agents from agentdrop.fyi, paid per call via x402, $0.001/call, status unknown (last checked 2026-11-01).
Long-polls until a specific key in a named box has a sequence number greater than a given value, returning the item or a timeout signal after up to 25 seconds.
Price / call$0.001
Success—
StatusUnknown
How this service works
Block until {key} in box {box} has a seq greater than since (query since=, default 0), up to timeout= seconds (max 25). Returns the item, or {"value":null,"timed_out":true}.
Output
Returns the stored item at the key (including its value and sequence number) once a new sequence greater than 'since' is available, or a JSON object with {"value":null,"timed_out":true} if the timeout elapses before any update arrives.
Example use cases
Agent task result handoff
“Block until key 'job-42-result' in box 'box_myagentpool' has been updated past sequence 0, and give me the value when it arrives — wait up to 20 seconds.”
Real-time inter-agent coordination
“I have two agents working together — wait on key 'step2-ready' in box 'pipeline_box' for a new value past sequence 3, timeout after 15 seconds if nothing shows up.”
Waiting for human approval signal
“Pause and listen on key 'approval' in box 'box_humanloop' until it gets a new entry after sequence 0, give me whatever comes back or tell me if it times out after 25 seconds.”
Technical details
Endpoint
GEThttps://agentdrop.fyi/box/:box/:key/wait?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to synchronize with another agent or process by blocking until a shared key is updated — ideal for producer/consumer patterns, approval workflows, or task result handoffs where polling would be wasteful. Prefer this over periodic polling because it returns immediately when data is ready and only charges per resolved call.
Side effects
- Timeout reached before key update: returns {"value":null,"timed_out":true} after up to 25 seconds
- Box or key does not exist: may return null or empty response
- Invalid 'since' parameter type: request rejected
- Timeout parameter exceeds 25-second maximum: capped or rejected
- Payment not provided or insufficient: 402 Payment Required
- Network interruption during long-poll: connection drops with no result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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