ToolVet
77trust / 100

Encode

by Encode JSON to MessagePack/CBOR in Developer tools

x402 APIPassing, checked 3 h ago

Serialize a JSON value into a compact MessagePack or CBOR byte stream, returned as a base64 (default), base64url or hex string, along with the byte length.

POST
https://pack.openverbs.com/v1/encode
Price
$0.004
per call in USDC
Uptime
100%
last 30 days
Response time
563 ms
777 ms slowest 5%
Last check
Passed
3 h ago, next any minute now

Run a free test callHow to call it

Reliability

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

How to call it

POST https://pack.openverbs.com/v1/encode

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://pack.openverbs.com/v1/encode
content-type: application/json

{
  "data": "example",
  "format": "msgpack",
  "outputEncoding": "base64"
}

Parameters

ParameterTypeRequiredDescription
dataanyYesAny JSON value (object, array, string, number, boolean or null).
formatstringYesBinary format, one of msgpack, cbor. One of: msgpack, cbor.
outputEncodingstringNoEnvelope encoding of the bytes (base64, base64url, hex). Default base64. One of: base64, base64url, hex.

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://pack.openverbs.com/v1/encode' \
  -H 'content-type: application/json' \
  --data-raw '{"data":"example","format":"msgpack","outputEncoding":"base64"}'

# 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://pack.openverbs.com/v1/encode' \
  -H 'content-type: application/json' \
  --data-raw '{"data":"example","format":"msgpack","outputEncoding":"base64"}' \
  | 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%2Fpack.openverbs.com%2Fv1%2Fencode&method=POST
const res = await pay("https://pack.openverbs.com/v1/encode", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "data": "example",
    "format": "msgpack",
    "outputEncoding": "base64"
  }),
});
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://pack.openverbs.com/v1/encode",
        json={
            "data": "example",
            "format": "msgpack",
            "outputEncoding": "base64",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
3 h agoPassed402612 ms$0.004
8 h agoPassed402556 ms$0.004
12 h agoPassed402568 ms$0.004
17 h agoPassed402602 ms$0.004
21 h agoPassed402590 ms$0.004
Show 10 older checks
26 h agoPassed402553 ms$0.004
30 h agoPassed402564 ms$0.004
34 h agoPassed402566 ms$0.004
38 h agoPassed402563 ms$0.004
43 h agoPassed402571 ms$0.004
47 h agoPassed402584 ms$0.004
2 days agoPassed402579 ms$0.004
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3 days agoPassed402633 ms$0.004