Software that can pay for Fractal data.

A paid endpoint answers 402. The wallet sends one FB transaction. The response unlocks. No buyer accounts — priced in sats, shown in ≈$ so humans can read it.

Browse catalog Sell an endpoint Developer playground

Non-custodialLocally verified FB · readable in ≈$

x402Fractal · FB · non-custodial

01
Request
Agent hits a paid endpoint
02
402
Challenge: amount · payTo · binding
03
Pay
One Fractal tx — merchant + fee
04
Unlock
Retry with rawTx · locally verified

Start with Fractal itself

Balance, BRC-20, txs, swap overview, AI analyst — live on the rail, charged per call in FB.

LLM

LLM Complete

Hosted LLM completion — pay one FB tx, no API key on the agent.

5,000,000 satfb-exact

GET

URL Fetch

Public URL → title + visible text. Static HTML only; JS apps may return an empty shell.

3,000,000 satfb-exact

BAL

Address Balance

Spendable + total FB balance and UTXO counts for any Fractal address.

1,000,000 satfb-exact

B20

Address BRC-20 Balances

BRC-20 token balances (overall / transferable / available) for an address.

1,000,000 satfb-exact

SWP

BRC-20 Swap Quote

InSwap quote on Fractal — expect out, USD, price impact.

1,000,000 satfb-exact

Transaction Detail

Full detail for a Fractal transaction by txid.

1,000,000 satfb-exact

Listings

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Providers

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Calls (30d)

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Volume (30d)

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Agents

Built for agents

One discovery URL. Pay with rawTx so outs verify locally — not by trusting a JSON oracle alone.

GET https://x402.fractal.api.thelonelybit.org/v1/tools.json
# MCP · Claude skill · OpenClaw
# see /agent-kit

Open tools.json →

Prefer X-PAYMENT-RAWTX. See agent-kit for MCP, Claude, and OpenClaw.

Software that can pay for Fractal data.

Start with Fractal itself

LLM Complete

URL Fetch

Address Balance

Address BRC-20 Balances

BRC-20 Swap Quote

Transaction Detail

Catalog