procurement-agent
$18.00 → OpenAI
capability / spend.compute
All delegated limits pass
Give agents authority.Not unlimited access.
CAPYN is the authorization control plane for autonomous agents—capabilities, hard limits, approvals and audit evidence before consequential actions execute.
Fail closedRequest-bound approvalInteger money accounting
Identity
Which authenticated agent is asking?
Mandate
What authority was delegated, and until when?
Policy
Do capability, vendor and spend constraints pass?
Approval
Does this exact request require a human?
Evidence
Can every decision and action be reconstructed?
Authority before execution
Agents can already pay. The missing layer is authority.
CAPYN does not replace a wallet, payment protocol or settlement network. It answers the question each of them needs answered first: may this agent perform this exact action?
Identity
Mandate
Policy
x402SOLANA / USDCSTRIPE / AP2
The policy engine stays chain-agnostic. Execution adapters move value; they do not decide permission.
One request, one decision
A policy result an agent can act on—and a human can explain.
Each response carries a deterministic decision, machine-readable reasons and the authorization evidence needed to investigate it later.
procurement-agent
$30.00 → UnknownVendor
capability / spend.api
DENY
VENDOR_NOT_ALLOWED
procurement-agent
$120.00 → AWS
capability / spend.compute
APPROVAL
Threshold exceeded
One typed call before the agent acts.
Authenticate the agent with its own revocable key. CAPYN infers identity server-side, evaluates the active mandate, and returns the exact next step.
agent.ts typed contract
import { Capyn } from "@capyn/sdk";
const capyn = new Capyn({
apiKey: process.env.CAPYN_API_KEY!
});
const result = await capyn.authorize({
capability: "spend.compute",
amount: { value: "18.00", currency: "USD" },
vendor: { id: "openai" },
metadata: { purpose: "Inference capacity" }
});
// result.decision → "ALLOW"Deny what the system cannot prove.
Unknown agent, expired mandate, missing capability, unapproved vendor, exceeded hard limit or malformed policy: CAPYN fails closed with an explicit reason.
Every consequential transition becomes an audit event.
Requests, denials, approvals, revocations and executions are recorded in an append-oriented event stream with organisation and actor context.