PageDelta by BitBooth: pay $0.01 once to render a public page, extract bounded Markdown and exact focus evidence, capture an optional visual snapshot, and compare it with this payer's previous observation. Returns hashes, a tracking cursor, a content-bound observation ID, and settled payment identity. No API key or subscription.
@bitbooth/mcp-fetch@2.3.1 remains public on npm and clean-install verified. Its official MCP Registry entry, io.github.Drock91/bitbooth-fetch version 2.3.1, is active with isLatest: true (published 2026-09-12T02:45:49.479212Z).
A credential-free install exposes only free discovery and preflight. The paid
page_delta tool appears only after explicit XRPL RLUSD mainnet selection,
a dedicated wallet, and caller-set spend caps. Each new observation costs exactly
0.010000 RLUSD. The fresh 402 challenge remains authoritative.
{
"mcpServers": {
"bitbooth-fetch": {
"command": "npx",
"args": ["-y", "@bitbooth/mcp-fetch@2.3.1"],
"env": {
"BITBOOTH_PAYMENT_RAIL": "xrpl-rlusd",
"BITBOOTH_XRPL_SEED": "sEd<dedicated-low-balance-agent-seed>",
"BITBOOTH_MAX_PER_CALL_USD": "0.010000",
"BITBOOTH_DAILY_LIMIT_USD": "0.10"
}
}
}
}
This is real mainnet spending. Never use a personal or treasury seed. See the published package guide for recovery, acknowledgement, and encrypted journal behavior.
curl -X POST https://app.heinrichstech.com/v1/cdp/render-pro \
-H 'content-type: application/json' \
-d '{"url":"https://example.com/","extract":"article","focus":"Example Domain"}'
# This request returns a 402 challenge. It does not sign or spend.
# For paid delivery, select a compatible accepts[] option and pay its advertised amount.
# Listed primary: 0.01 USDC to 0xDa2F35d283c42dd60B965322394bc658a5c1769F on Base mainnet (eip155:8453).
# A compatible x402 client retries the identical request with PAYMENT-SIGNATURE.
# The selected facilitator verifies and settles before paid delivery.
This call does not sign or spend. It lets your agent inspect the exact live price, recipient, asset, and network choices before choosing a compatible x402 buyer.
const res = await fetch('https://app.heinrichstech.com/v1/cdp/render-pro', {
method: 'POST',
headers: { 'content-type': 'application/json' },
body: JSON.stringify({"url":"https://example.com/","extract":"article","focus":"Example Domain"}),
});
if (res.status !== 402) throw new Error(`Expected 402, received ${res.status}`);
const challenge = await res.json();
console.table(challenge.accepts.map(({ network, asset, amount, payTo }) => ({
network, asset, amount, payTo,
})));
Agents can discover this featured API from the JSON feeds below. The fresh 402 challenge remains canonical for price, asset, recipient, and network availability.