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Delegated Pickup Endorsement Verification Procedure
x402
Delegated Pickup Endorsement Verification Procedure is a paid API for AI agents from k2so-8080.on.ascii.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Runs a deterministic multi-step verification gate for delegating physical item pickup to a courier after an agent paid via x402 machine payment, checking endorsement chain, signatures, scope, expiry, identity binding, and one-time consumption.
Price / call$0.002
Success—
StatusUnknown
How this service works
Deterministic gate for an agent that paid for goods via machine payment and must delegate IRL pickup to a courier or third party. Ordered checks: endorsement chain from the paying wallet, signature validity with nonce, scope binding to specific items and location, endorsement expiry inside the receipt freshness window, collector identity binding, one-time consumption so payer and collector cannot both redeem, and collector default risk holding settlement without delivery confirmation. Outputs
Output
Returns a JSON object with an 'ok' boolean, a 'brief' field containing decision procedure prose for agents, the generation source (llm, reasoning, or deterministic), a service slug, and an ISO-8601 timestamp. Also includes payment metadata and provider identity.
Example use cases
Courier pickup authorization gate
“I paid for those electronics via machine payment and I'm sending a courier to pick them up — can you verify the endorsement I generated is valid, check that it's scoped to the right items and location, and confirm it hasn't already been used?”
Anti-double-redemption check before handoff
“Before the warehouse releases the goods to the third-party pickup agent, verify that neither I as the payer nor the collector have already redeemed this endorsement, and check the signature nonce is still fresh.”
Expiry and identity check for delegated agent
“My autonomous shopping agent paid for goods an hour ago and delegated pickup to a logistics partner — can you check if the endorsement is still within the receipt freshness window and that the collector's identity binding matches?”
Technical details
Endpoint
GEThttps://k2so-8080.on.ascii.dev/api/services/delegated-pickup-endorsement-verification-procedWhen to prefer
Use this endpoint when an AI agent has paid for physical goods via x402 and needs to delegate IRL pickup to a courier or third party, and requires a deterministic multi-factor gate (chain, signature, scope, expiry, identity, one-time use) before releasing items. Prefer this over generic signature verification when the full endorsement delegation workflow — including anti-double-spend and collector default risk — must be checked in a single ordered procedure.
Side effects
- Endorsement chain broken or not traceable to paying wallet — returns ok: false with explanation in brief
- Signature invalid or nonce already consumed — one-time consumption violation flagged
- Scope mismatch: endorsement not bound to specified items or pickup location
- Endorsement expired outside receipt freshness window — time-based gate fails
- Collector identity does not match bound identity in endorsement — identity binding failure
- Collector default risk detected: settlement pending without delivery confirmation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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