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PHION Mandate Capacity Reservation
x402
PHION Mandate Capacity Reservation is a paid API for AI agents from phion.systems, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).
Atomically reserves cumulative mandate capacity and returns a signed state receipt for AI-agent payment mandate workflows
Price / call$0.004
Success—
StatusUnknown
How this service works
Atomically reserve cumulative mandate capacity and return signed state
Output
A signed state object confirming the atomic reservation of the requested mandate capacity, including cryptographic signature, reserved amount, cumulative mandate state, and a machine-readable receipt suitable for downstream verification or audit by AI agents.
Example use cases
Pre-flight spend lock for agent pipeline
“Before my agent executes this multi-step purchase workflow, reserve the required mandate capacity and return a signed state so I can prove the budget is committed before disbursement starts.”
Incremental mandate headroom tracking
“My agent has a rolling payment mandate — reserve the next tranche of cumulative capacity and give me a signed state receipt so I can track how much has been allocated versus what remains.”
Atomic capacity hold before vendor payment
“I need to atomically lock mandate capacity for an upcoming vendor payment my AI agent is about to authorize — reserve it now and return the signed state so the transaction can proceed with proof of reservation.”
Technical details
Endpoint
POSThttps://phion.systems/v1/paid/mandates/reserveWhen to prefer
Use this endpoint when an AI agent needs to atomically reserve and lock spending capacity within a payment mandate before executing a transaction, especially when you need a cryptographically signed proof of reservation for audit, compliance, or downstream verification. Prefer this over generic payment initiation when the mandate's cumulative state must be tracked and the reservation must be atomic to prevent race conditions in multi-agent or multi-step commerce workflows.
Side effects
- Insufficient remaining mandate capacity — reservation rejected with capacity-exceeded error
- Concurrency conflict — atomic reservation fails if another process modified mandate state simultaneously
- Invalid or expired mandate identifier — returns authorization error
- Malformed reservation parameters — returns validation error with field-level detail
- Signature generation failure — internal error preventing signed state production
Input
Schema · Request body
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object"
}Tags
x402
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