x402 · Stellar · Apache-2.0
An agent pays your endpoint. It settles in about five seconds. Your service is in the catalogue — no registration, no form, no API key. Then every other agent can find it.
Non-custodial. Funds move buyer → seller. walras never holds them.
LAST CI RUN · 2026-08-15 · ledger 4152772 · fee 0.0022973 XLM
Measured, not projected. Method in the open: docs/FACTS.md
Add one line. Get paid per request, and get found the first time someone pays.
app.use(x402({
facilitator: "https://facilitator.walras.space",
network: "stellar:testnet",
routes: { "GET /v1/forecast": { price: "$0.01" } },
}));app.add_middleware(
X402Middleware,
facilitator="https://facilitator.walras.space",
network="stellar:testnet",
routes={"GET /v1/forecast": {"price": "$0.01"}},
)Your agent pays a service with no prior integration — an unmodified stock client.
import { wrapFetch } from "@x402/fetch";
const pay = wrapFetch(fetch, { signer, network: "stellar:testnet" });
const res = await pay("https://your-service.example/v1/forecast");Not yet built — the MCP server ships in Tranche 2. This is the shape it will take, not an endpoint you can call today.
tools = await mcp.connect("https://mcp.walras.space")
svc = await tools.search_resources("weather forecast, hourly")
data = await tools.paid_call(svc[0].id, { "lat": 28.6, "lon": 77.2 })The facilitator is the part everyone builds. The rest is what makes it usable.
Every row appears because someone paid for it. No registration step, no submission form, no review queue. This page reads the same public endpoint your agent does.
Nothing to browse yet.
The discovery endpoints are a Tranche 1 deliverable and haven't shipped. When they do, this page fills itself — the first payment to any walras-facilitated service creates the first row.
Track it on the roadmap →Nothing is listed until something is paid.
The catalogue has no entries. That isn't an error — it's how it works. Pay any walras-facilitated endpoint and it appears here within one settlement.
Read the seller quickstart →Can't reach the catalogue.
facilitator.walras.space/discovery/resources didn't
respond. This page doesn't cache, so there's nothing to show you.
Listings from walras's own products receive no ranking preference. The ranking
configuration is public: config/ranking.yaml.
the fee walras actually paid per settlement, measured across twelve settlements. Micropayments only work when the fee is smaller than the payment.
F-069to settle, with the network fee sponsored — buyers never need XLM. Measured median 5.18 s across five consecutive settlements.
F-095native. Buyers pay through the Stellar Asset Contract; USDC is the default at 7 decimals, and any SEP-41 token is supported.
F-008
Sorobanx402Circle / USDCMCP Compatible with, not endorsed by.
Léon Walras described a market as a process of groping toward the price at which everything clears. He called it tâtonnement. He assumed an auctioneer who could hear every bid.
Agents can't shout. They have to be found. walras is the auctioneer's book for Stellar — and the book only records what was actually paid.
Testnet today. Non-custodial by construction.