Stablecoin Corridor: USDC to Local Fiat for B2B Payouts

The Stablecoin Corridor lets you move USDC onto local fiat rails so you can pay suppliers, contractors, and payroll recipients in their own currency—without touching correspondent banking. You hold USDC, submit a payout request, and Circle’s Cross-Platform Network (CPN) handles the fiat leg. The entire flow runs through three API calls.

Supported corridors

Every corridor settles from USDC into a local currency. The table below shows the destinations available today.

Destination currency	Country	ISO code
Brazilian Real	Brazil	`BRL`
Mexican Peso	Mexico	`MXN`
Nigerian Naira	Nigeria	`NGN`
Kenyan Shilling	Kenya	`KES`
South African Rand	South Africa	`ZAR`

Base URL

All Corridor API calls go to the production endpoint below. There is no sandbox subdomain—use your dashboard test credentials for pre-production runs.

Environment	Base URL
Production	`https://corridor.meterlane.app`

How it works

The Corridor flow is three steps. You create a corridor once per destination currency, then reuse it for as many payouts as you need.

Create a corridor — POST /corridors registers a new corridor for a given destination currency. The corridor starts in PENDING_KYC status and moves to ACTIVE after your organization completes KYC verification in the dashboard.
Get a quote — GET /corridors/:id/quote returns a live FX rate, the destination amount after fees, and a quoteId that locks the rate for a short window.
Initiate a payout — POST /corridors/:id/pay submits the payout using the locked quote. Circle confirms settlement and posts a webhook event back to Meterlane, which updates the payment status from PENDING to SETTLED.

Status lifecycle

A corridor’s status follows a fixed path, and a payment’s status follows its own. Corridor status:

PENDING_KYC → ACTIVE

Payment status:

PENDING → SETTLED
        → FAILED
        → COMPLIANCE_HOLD

Platform fees

Meterlane charges a transaction fee on each payout. The all-in fee, including partner rail costs, is visible in the dashboard quote UI before you confirm.

Fee type	Range
Platform transaction fee	0.25 %–0.65 %

Corridor vs Agent Gateway

Corridor and Agent Gateway are separate products with different payment models. Use this table to pick the right one.

	Stablecoin Corridor	Agent Gateway
Use case	B2B payouts to suppliers, payroll, contractors	Monetized API routes, AI-agent micropayments
Payment model	FX quote → bank rail settlement	x402 micropayments (`402` + `X-Payment-Requirements`)
Key endpoints	`/corridors/:id/quote` + `/corridors/:id/pay`	`/gateway/{orgSlug}/{routePath}`
Settlement	Local fiat via Circle CPN	USDC on-chain
Recipient	Bank account holder	Any USDC-capable wallet

Next steps

Quote & Pay

Step-by-step guide to creating a corridor, fetching a live quote, and submitting your first payout.

Webhooks

Configure Circle webhooks to receive real-time payment status updates in your application.

Get Started

Agent Gateway