ToolVet
78trust / 100

Nostr Zap Weighted

by nostrpulse.xyz in Other

x402 APIPassing, checked 4 h ago

Top Nostr notes and authors by sat-zap velocity over a rolling window. Surfaces real-money sentiment — who the BTC/Nostr economy is literally paying to amplify. Fundamentally different signal from reposts/likes: zaps cost sats. Query ?window=15m|1h|6h|24h &scope=notes|authors &limit=N.

GET
https://nostrpulse.xyz/nostr/zap-weighted
Price
$0.02
per call in USDC
Uptime
100%
last 30 days
Response time
234 ms
269 ms slowest 5%
Last check
Passed
4 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

GET https://nostrpulse.xyz/nostr/zap-weighted

Each call costs $0.02 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://nostrpulse.xyz/nostr/zap-weighted?limit=20&scope=notes&window=1h

Parameters

ParameterTypeRequiredDescription
limitintegerNoNumber of results. Default 20.
scopestringNonotes = top zapped notes; authors = top zapped authors. Default notes. One of: notes, authors.
windowstringNoRolling time window. Default 1h. One of: 15m, 1h, 6h, 24h.

Example response

The provider's example. We can't check it without paying.

{
  "count": 1,
  "generated_at": 1776920304,
  "notes": [
    {
      "author_npub": "npub1f4uyypghstsd8l4sxng4ptwzk6awfm3mf9ux0yallfrgkm6mj6es50r407",
      "author_pubkey": "4d7842051782e0d3feb034d150adc2b6bae4ee3b49786793bffa468b6f5b96b3",
      "content_preview": "Mozilla has patched 271 vulnerabilities in Firefox...",
      "kind": 1,
      "note_created_at": 1776919765,
      "note_id": "8784eb91cd98c9892b44136789857774dfcba8d266aee04f45bc630b81ce1dda",
      "num_zaps": 1,
      "sats": 21
    }
  ],
  "window": "1h"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.02.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://nostrpulse.xyz/nostr/zap-weighted?limit=20&scope=notes&window=1h'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://nostrpulse.xyz/nostr/zap-weighted?limit=20&scope=notes&window=1h' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fnostrpulse.xyz%2Fnostr%2Fzap-weighted
const res = await pay("https://nostrpulse.xyz/nostr/zap-weighted?limit=20&scope=notes&window=1h");
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://nostrpulse.xyz/nostr/zap-weighted?limit=20&scope=notes&window=1h")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
4 h agoPassed402243 ms$0.02
8 h agoPassed402220 ms$0.02
12 h agoPassed402219 ms$0.02
16 h agoPassed402222 ms$0.02
20 h agoPassed402251 ms$0.02
Show 10 older checks
24 h agoPassed402252 ms$0.02
28 h agoPassed402234 ms$0.02
32 h agoPassed402233 ms$0.02
36 h agoPassed402199 ms$0.02
40 h agoPassed402210 ms$0.02
43 h agoPassed402247 ms$0.02
47 h agoPassed402228 ms$0.02
2 days agoPassed402269 ms$0.02
2 days agoPassed402262 ms$0.02
2 days agoPassed402235 ms$0.02