> ## Documentation Index
> Fetch the complete documentation index at: https://docs.pulsmarket.tech/llms.txt
> Use this file to discover all available pages before exploring further.

# Pay a Lepton — $0.000001

> A public, keyless x402 endpoint. Pay one lepton, ask the swarm. The smallest coin, clearing in under 500ms on Arc.

## The smallest coin, reborn for machines

From the Lepton Agents Hackathon brief: *"The lepton was the smallest coin of the Greek world, a hundredth of a drachma. The name endured two and a half thousand years. Nanopayments are the lepton reborn for machines: value as small as \$0.000001, clearing in under half a second."*

Puls brings this to life as a **live, public x402 endpoint**: anyone pays exactly one lepton (\$0.000001) and receives the Puls agent swarm's live AI consensus on any question — no login, no API key, no subscription.

```bash theme={null}
curl -H 'payment-signature: <gateway-sig>' \
  'https://api.pulsmarket.tech/api/lepton/ask?q=Will+Solana+flip+Ethereum'
```

## What you get

Every paid request returns:

| Field          | Description                                                            |
| -------------- | ---------------------------------------------------------------------- |
| `question`     | Your question, echoed back                                             |
| `answer`       | 3-4 sentence forecast with key drivers                                 |
| `confidence`   | 50-95% calibrated confidence                                           |
| `lean`         | YES / NO / UNCERTAIN                                                   |
| `sources`      | Up to 10 researched web sources the swarm read                         |
| `sourcesCount` | Number of cited sources                                                |
| `settled`      | x402 settlement details: payer, tx hash, Arcscan link                  |
| `paid`         | Price paid (`$0.000001`)                                               |
| `note`         | "One lepton paid — the smallest coin, clearing in under 500ms on Arc." |

## x402 configuration

Buyer agents can discover the endpoint programmatically:

```bash theme={null}
curl https://api.pulsmarket.tech/api/lepton/info
```

Returns the network, asset (USDC), Gateway wallet address, and `paywalledEndpoints` listing the lepton endpoint at the correct price.

## How it fits

* **RFB 2** — Selling agent services via nanopayments: this is a pay-per-call intelligence endpoint, dynamically priced at the floor
* **RFB 3** — Agent-to-agent networks: any agent can query the swarm by paying one lepton — machine-to-machine value transfer at the smallest scale
* The hackathon thesis: *"value as small as \$0.000001, gas paid in USDC, settled in under half a second on Arc"* — live and running