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Polymarket Historical

by mechamanda.com in Markets & finance

x402 APIPassing, checked 1 h ago

Get resolved/historical prediction markets from Polymarket. Filter by date range, slug, or category.

GET
https://mechamanda.com/api/polymarket/historical
Price
$0.01
per call in USDC
Uptime
100%
last 30 days
Response time
206 ms
1.1 s slowest 5%
Last check
Passed
1 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://mechamanda.com/api/polymarket/historical

Each call costs $0.01 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://mechamanda.com/api/polymarket/historical?limit=5&offset=0

Parameters

ParameterTypeRequiredDescription
endDateMaxstringNoFilter events that ended on or before this date (ISO 8601)
endDateMinstringNoFilter events that ended on or after this date (ISO 8601)
limitstringNoMax number of events to return (default 5)
offsetstringNoPagination offset (default 0)
slugstringNoLook up a specific event by slug
tag_slugstringNoFilter by category tag (e.g. politics, sports, crypto)

Example response

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

[
  {
    "description": "This market resolves Yes if...",
    "liquidity": 120000,
    "outcomePrices": [
      "0.92",
      "0.08"
    ],
    "outcomes": [
      "Yes",
      "No"
    ],
    "question": "Will the Fed cut rates in January 2026?",
    "volume": 890000
  }
]

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://mechamanda.com/api/polymarket/historical?limit=5&offset=0'

# 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://mechamanda.com/api/polymarket/historical?limit=5&offset=0' \
  | 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fmechamanda.com%2Fapi%2Fpolymarket%2Fhistorical
const res = await pay("https://mechamanda.com/api/polymarket/historical?limit=5&offset=0");
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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://mechamanda.com/api/polymarket/historical?limit=5&offset=0")
    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
1 h agoPassed402164 ms$0.01
6 h agoPassed402149 ms$0.01
10 h agoPassed402151 ms$0.01
15 h agoPassed402165 ms$0.01
19 h agoPassed402147 ms$0.01
Show 10 older checks
23 h agoPassed402151 ms$0.01
27 h agoPassed402193 ms$0.01
31 h agoPassed402964 ms$0.01
35 h agoPassed402362 ms$0.01
39 h agoPassed402138 ms$0.01
43 h agoPassed402206 ms$0.01
47 h agoPassed402166 ms$0.01
2 days agoPassed402311 ms$0.01
2 days agoPassed402307 ms$0.01
2 days agoPassed402150 ms$0.01