ToolVet
78trust / 100

Follower Graph

by nostr.halowerk.com in Company & people data

x402 APIPassing, checked 39 min ago

Fetches kind 3 contact lists over up to twelve relays. Because kind 3 is replaceable, several relays regularly hold different versions; only the one with the highest created_at is used and the answer states which relays carried that version and how many older versions were seen, so a stale relay never quietly overwrites a current list. At depth 1 the answer is the account and its outgoing follows.

POST https://nostr.halowerk.com/follower-graph

Last 30 days

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

Uptime
100%
Response time
136 ms typical, 184 ms slowest 5%
Last check
39 min ago
Next check
any minute now

How to call it

POST https://nostr.halowerk.com/follower-graph

Each call costs $0.004 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.

POST https://nostr.halowerk.com/follower-graph
content-type: application/json

{
  "pubkey": "beispiel"
}

Parameters

ParameterTypeRequiredDescription
depthintegerNo1 returns the account and its follows. 2 also fetches the contact lists of its contacts. One of: 1, 2. Default: 1.
max_contactsintegerNoUpper bound on contacts reported for the root account. Default: 200.
pubkeystringYesPublic key as 64 hex characters, npub or nprofile.
relaysarray of stringNowss relay addresses. Left empty, ten measured default relays are used.
second_degree_sampleintegerNoHow many contact lists to fetch at depth 2. Higher values cost time, not money. Default: 15.

Example response

The listing has no example response.

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.004.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://nostr.halowerk.com/follower-graph' \
  -H 'content-type: application/json' \
  --data-raw '{"pubkey":"beispiel"}'

# 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 - -X POST 'https://nostr.halowerk.com/follower-graph' \
  -H 'content-type: application/json' \
  --data-raw '{"pubkey":"beispiel"}' \
  | 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 $0.004 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.004" });
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 $0.004 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fnostr.halowerk.com%2Ffollower-graph&method=POST
const res = await pay("https://nostr.halowerk.com/follower-graph", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "pubkey": "beispiel"
  }),
});
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 $0.004 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.004"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://nostr.halowerk.com/follower-graph",
        json={
            "pubkey": "beispiel",
        },
    )
    print(res.status_code, res.text)

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
39 min agoPassed402136 ms$0.004
5 h agoPassed402116 ms$0.004
9 h agoPassed402133 ms$0.004
13 h agoPassed402146 ms$0.004
16 h agoPassed402138 ms$0.004
20 h agoPassed402139 ms$0.004
24 h agoPassed402144 ms$0.004
27 h agoPassed402184 ms$0.004
31 h agoPassed40241 ms$0.004
35 h agoPassed40243 ms$0.004
38 h agoPassed402136 ms$0.004
42 h agoPassed402134 ms$0.004
45 h agoPassed402156 ms$0.004
2 days agoPassed402143 ms$0.004
2 days agoPassed402128 ms$0.004