Marketplace Sourcing
Let agents source parts and supplies across marketplaces while preventing merchant drift and stopping duplicate charges.
The Problem
Marketplaces have many sellers and inconsistent descriptors. If an agent is allowed to buy broadly, merchant drift and duplicate charges become likely, and receipts can be scattered across sellers.
The Solution
Use intent gating plus merchant/category boundaries and strict velocity caps. Prefer merchant allowlists for known marketplaces, then verify every purchase against intent and persist evidence logs.
Key Features
Marketplace allowlists
Lock spend to approved marketplaces and block unknown merchants by default.
Velocity caps
Stop retry loops and duplicate charges in automated checkout flows.
Post-purchase verification
Verify merchant + amount against intent and attach order confirmation.
Evidence logs
Each charge is tied to an intentId and a sourcing request for auditing.
How It Works
Sourcing request
Agent receives a parts list and creates an intent per purchase or per basket.
Policy enforcement
Merchant/category restrictions and velocity limits are enforced at checkout.
Purchase + confirmation
Agent checks out and captures confirmation/receipt artifacts.
Verify + reconcile
Transactions verified against intent; evidence stored for later review.
Code Example
const intent = await signets.intents.create({
purpose: "Buy replacement SSDs for build server",
expectedAmount: 18000,
expectedMerchant: "amazon.com",
});Ready to get started?
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