ToolVet
80trust / 100

Crowd Changes

by Annalist in Onchain & crypto

x402 APIPassing, checked 22 min ago

For bots that poll: crowd-state events (a perp entering or leaving a state) since a timestamp, newest first, up to 7 days back. Each event is signed with the mark price at the time. Not investment advice.

GET https://api.annalist.dev/v1/crowd/changes

Last 30 days

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

Uptime
100%
Response time
271 ms typical, 516 ms slowest 5%
Last check
22 min ago
Next check
in 10 min

How to call it

GET https://api.annalist.dev/v1/crowd/changes

Each call costs $0.005 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://api.annalist.dev/v1/crowd/changes?since=2026-10-12T00%3A00%3A00Z

Parameters

ParameterTypeRequiredDescription
sincestring (date-time)Yes

Example response

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

{
  "data": {
    "events": [
      {
        "coin": "XYZ",
        "state": "up_100pct_7d",
        "ts": "2026-10-12T14:07:00Z",
        "type": "enter"
      }
    ]
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.annalist.dev/v1/crowd/changes?since=2026-10-12T00%3A00%3A00Z'

# 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://api.annalist.dev/v1/crowd/changes?since=2026-10-12T00%3A00%3A00Z' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.annalist.dev%2Fv1%2Fcrowd%2Fchanges
const res = await pay("https://api.annalist.dev/v1/crowd/changes?since=2026-10-12T00%3A00%3A00Z");
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.annalist.dev/v1/crowd/changes?since=2026-10-12T00%3A00%3A00Z")
    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
22 min agoPassed402271 ms$0.005
4 h agoPassed402633 ms$0.005
8 h agoPassed402114 ms$0.005
12 h agoPassed402444 ms$0.005
16 h agoPassed402516 ms$0.005
20 h agoPassed402508 ms$0.005
24 h agoPassed402231 ms$0.005
28 h agoPassed40240 ms$0.005
31 h agoPassed402182 ms$0.005
35 h agoPassed402363 ms$0.005
38 h agoPassed402391 ms$0.005
42 h agoPassed40240 ms$0.005