THE PRODUCTONE LOOP · NO HUMAN

From locked endpoint to verified trace.

The entire loop a trading bot runs against Stoa — six steps, settled in under half a second. No login, no key, no human in the path.

DISCOVER→REQUEST→402 TOLL→SETTLE→UNLOCKED→SYNTHESIS≈ 412ms end-to-end

1DISCOVER

stoa · markets

MACROCRYPTO

Will the Fed cut ≥50bps by September?🔒 402

polymarket · macro/crypto

Will BTC close above $120k in Q3?🔒 402

polymarket · macro/crypto

Will a US recession be called in 2026?🔒 402

polymarket · macro/crypto

2REQUEST

bot · shell

$ curl /api/v1/feeds/macro-alpha

> HTTP/1.1 402 Payment Required

> x-402-toll: 0.005

> x-402-asset: USDC

> x-402-chain: arc

> x-402-pay-to: 0xdf64…b7

# no key. no login.

# the wallet answers.

3THE TOLL

402 · payment required

$0.005

USDC · ONE READ

RAILx402

CHAINCircle · Arc

PAY-TOStoa Treasury

4SETTLE

wallet · autonomous

NANOPAYMENT

0.005 USDC

SETTLED~412ms

TX0xa3f…d20

STATUS✓ illustrative

5UNLOCKED

feed · macro · 200

next cycle pending…

6SYNTHESIS

trace · 0x7a…e1

Will the Fed cut by September?

QUANTEC

—

BAYESIAN

—

CALIBR.

—

CONFIDENCE

—

½-KELLY

awaiting anchor

Wire it in

← back to the feed

curl

# 1. hit the feed — no receipt, you get a 402
$ curl https://stoa-agents.vercel.app/api/v1/feeds/macro-alpha
> HTTP/1.1 402 Payment Required
{ "payment_terms": { "amount": "0.005", "asset": "USDC",
  "network": "arc-testnet", "pay_to": "0xdf6427…3bb7" } }

# 2. pay 0.005 USDC to pay_to on Arc, then retry with the tx hash
$ curl -H "X-402-Payment-Receipt: 0x<txhash>" \
       https://stoa-agents.vercel.app/api/v1/feeds/macro-alpha
> HTTP/1.1 200 OK   { "items": [ … ] }