79trust / 100

Markets

by quotient-api-gateway.onrender.com in Markets & finance

x402 APIPassing, checked 3 h ago

Use this to browse every prediction market Quotient tracks across Polymarket International, Polymarket US, Kalshi, and HL Outcomes, with venue odds and quote provenance, available volume, resolution date, and forecast recency. Polymarket International and Kalshi fail closed when live pricing is unavailable; other venues label graph snapshots stale. Filter by venue or topic; the complete covered catalog returns in one response.

GET

https://quotient-api-gateway.onrender.com/api/v1/markets

Price: $0.005; per call in USDC
Uptime: 100%; last 30 days
Response time: 752 ms; 988 ms slowest 5%
Last check: Passed; 3 h ago, next any minute now

Run a free test call How 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://quotient-api-gateway.onrender.com/api/v1/markets

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://quotient-api-gateway.onrender.com/api/v1/markets?max_forecast_age=48&sort=volume_desc&topic=oil

Parameters

Parameter	Type	Required	Description
`changed_within`	integer	No
`league`	string	No	One of: atp, wta, cfb, nfl, mlb, wnba, nba, nhl, mls, epl, pga, dpwt.
`max_forecast_age`	integer	No	Default: 48.
`sort`	string	No	One of: updated_desc, volume_desc, signal_count_desc, quality.
`topic`	string	No
`venue`	string	No	Prediction-market venue key: polymarket (Polymarket International), polymarket_us (Polymarket US), kalshi, or hl_outcomes (HL Outcomes, Hyperliquid's outcome markets; covered sports game-winner markets only). HL Outcomes marketKeys contain # (hl_outcomes:#<outcome id>); percent-encode it as %23 in … One of: polymarket, polymarket_us, kalshi, hl_outcomes.

Example response

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

Example response, 301 lines

{
  "markets": [
    {
      "categories": [
        "Commodities"
      ],
      "clarifications": null,
      "end_date": "2026-08-31T20:00:00Z",
      "event": {
        "id": "KXGOLD-26AUG",
        "slug": null,
        "title": "Gold price in August"
      },
      "forecast_count": 1,
      "inDispute": false,
      "latest_forecast_at": "2026-08-08T14:30:00Z",
      "latest_forecast_delta": 0.03,
      "latest_forecast_id": null,
      "latest_forecast_refresh_reason": "price_move",
      "marketKey": "kalshi:KXGOLD-26AUG-T2500",
      "marketUrl": null,
      "market_odds": 0.46,
      "market_updated_at": "2026-08-08T15:02:11Z",
      "nativeEventId": "KXGOLD-26AUG",
      "nativeMarketId": "KXGOLD-26AUG-T2500",
      "polymarketUrl": null,
      "quality": {
        "assessment_source": null,
        "basis": "binary_accuracy",
        "cohort": {
          "key": "",
          "label": "No comparable record"
        },
        "historical": {
          "accuracy_pct": null,
          "avg_loss_return_pct": null,
          "avg_return_pct": null,
          "avg_win_return_pct": null,
          "benchmark": null,
          "benchmark_improvement_pct": null,
          "drawdown_duplicate_n": 0,
          "drawdown_first_at": null,
          "drawdown_last_at": null,
          "drawdown_missing_n": 0,
          "drawdown_n": 0,
          "drawdown_reason": "no_trade_returns",
          "event_n": 0,
          "first_at": null,
          "in_sample": false,
          "interval_high": null,
          "interval_low": null,
          "last_at": null,
          "loss_return_n": 0,
          "losses": null,
          "max_drawdown_units": null,
          "mean_advantage": null,
          "median_return_pct": null,
          "n": 0,
          "p10_return_pct": null,
          "p90_return_pct": null,
          "price_error_pct": null,
          "reason": "quality_not_computed",
          "return_basis": null,
          "return_n": 0,
          "status": "unavailable",
          "tier": null,
          "voids": null,
          "win_rate_pct": null,
          "win_return_n": 0,
          "wins": null
        },
        "live": {
          "accuracy_pct": null,
          "avg_loss_return_pct": null,
          "avg_return_pct": null,
          "avg_win_return_pct": null,
          "benchmark": null,
          "benchmark_improvement_pct": null,
          "drawdown_duplicate_n": 0,
          "drawdown_first_at": null,
          "drawdown_last_at": null,
          "drawdown_missing_n": 0,
          "drawdown_n": 0,
          "drawdown_reason": "no_trade_returns",
          "event_n": 0,
          "first_at": null,
          "in_sample": false,
          "interval_high": null,
          "interval_low": null,
          "last_at": null,
          "loss_return_n": 0,
          "losses": null,
          "max_drawdown_units": null,
          "mean_advantage": null,
          "median_return_pct": null,
          "n": 0,
          "p10_return_pct": null,
          "p90_return_pct": null,
          "price_error_pct": null,
          "reason": "quality_not_computed",
          "return_basis": null,
          "return_n": 0,
          "status": "unavailable",
          "tier": null,
          "voids": null,
          "win_rate_pct": null,
          "win_return_n": 0,
          "wins": null
        },
        "reason": "quality_not_computed",
        "status": "unavailable",
        "tier": null,
        "updated_at": null,
        "version": "track-record-quality/1"
      },
      "question": "Will gold settle above $2,500 in August?",
      "quotientMarketId": "kalshi:KXGOLD-26AUG-T2500",
      "quotientUrl": "https://quotient.social/markets/kalshi%3AKXGOLD-26AUG-T2500",
      "return_record": null,
      "seriesTicker": "KXGOLD",
      "signal_count": 0,
      "slug": null,
      "sourceUrl": null,
      "sports": null,
      "tags": [
        "Commodities",
        "Metals",
        "Gold"
      ],
      "venue": "kalshi",
      "venue_quote": {
        "freshness": "verified",
        "market_id": "KXGOLD-26AUG-T2500",
        "observed_at": "2026-08-31T12:00:00Z",
        "quote_method": "midpoint",
        "schema_version": "1",
        "selected_probability": 0.46,
        "venue": "kalshi",
        "venue_timestamp": "2026-08-31T12:00:00Z",
        "yes_ask": 0.46,
        "yes_bid": 0.46,
        "yes_last": null
      },
      "volume_24h": null
    },
    {
      "categories": [
        "Sports"
      ],
      "clarifications": null,
      "end_date": "2026-10-11T17:00:00Z",
      "event": {
        "id": "KXNFLGAME-26SEP27ATLGB",
        "slug": null,
        "title": "Atlanta vs Green Bay"
      },
      "forecast_count": 1,
      "inDispute": false,
      "latest_forecast_at": "2026-09-26T14:05:00Z",
      "latest_forecast_delta": null,
      "latest_forecast_id": null,
      "latest_forecast_refresh_reason": null,
      "marketKey": "kalshi:KXNFLGAME-26SEP27ATLGB-GB",
      "marketUrl": null,
      "market_odds": 0.64,
      "market_updated_at": "2026-09-26T15:02:11Z",
      "nativeEventId": "KXNFLGAME-26SEP27ATLGB",
      "nativeMarketId": "KXNFLGAME-26SEP27ATLGB-GB",
      "polymarketUrl": null,
      "quality": {
        "assessment_source": null,
        "basis": "binary_accuracy",
        "cohort": {
          "key": "",
          "label": "No comparable record"
        },
        "historical": {
          "accuracy_pct": null,
          "avg_loss_return_pct": null,
          "avg_return_pct": null,
          "avg_win_return_pct": null,
          "benchmark": null,
          "benchmark_improvement_pct": null,
          "drawdown_duplicate_n": 0,
          "drawdown_first_at": null,
          "drawdown_last_at": null,
          "drawdown_missing_n": 0,
          "drawdown_n": 0,
          "drawdown_reason": "no_trade_returns",
          "event_n": 0,
          "first_at": null,
          "in_sample": false,
          "interval_high": null,
          "interval_low": null,
          "last_at": null,
          "loss_return_n": 0,
          "losses": null,
          "max_drawdown_units": null,
          "mean_advantage": null,
          "median_return_pct": null,
          "n": 0,
          "p10_return_pct": null,
          "p90_return_pct": null,
          "price_error_pct": null,
          "reason": "quality_not_computed",
          "return_basis": null,
          "return_n": 0,
          "status": "unavailable",
          "tier": null,
          "voids": null,
          "win_rate_pct": null,
          "win_return_n": 0,
          "wins": null
        },
        "live": {
          "accuracy_pct": null,
          "avg_loss_return_pct": null,
          "avg_return_pct": null,
          "avg_win_return_pct": null,
          "benchmark": null,
          "benchmark_improvement_pct": null,
          "drawdown_duplicate_n": 0,
          "drawdown_first_at": null,
          "drawdown_last_at": null,
          "drawdown_missing_n": 0,
          "drawdown_n": 0,
          "drawdown_reason": "no_trade_returns",
          "event_n": 0,
          "first_at": null,
          "in_sample": false,
          "interval_high": null,
          "interval_low": null,
          "last_at": null,
          "loss_return_n": 0,
          "losses": null,
          "max_drawdown_units": null,
          "mean_advantage": null,
          "median_return_pct": null,
          "n": 0,
          "p10_return_pct": null,
          "p90_return_pct": null,
          "price_error_pct": null,
          "reason": "quality_not_computed",
          "return_basis": null,
          "return_n": 0,
          "status": "unavailable",
          "tier": null,
          "voids": null,
          "win_rate_pct": null,
          "win_return_n": 0,
          "wins": null
        },
        "reason": "quality_not_computed",
        "status": "unavailable",
        "tier": null,
        "updated_at": null,
        "version": "track-record-quality/1"
      },
      "question": "Atlanta vs Green Bay Winner?",
      "quotientMarketId": "kalshi:KXNFLGAME-26SEP27ATLGB-GB",
      "quotientUrl": "https://quotient.social/markets/kalshi%3AKXNFLGAME-26SEP27ATLGB-GB",
      "return_record": null,
      "seriesTicker": "KXNFLGAME",
      "signal_count": 0,
      "slug": null,
      "sourceUrl": null,
      "sports": {
        "game_key": "nfl|atl|gb|20260927T1700",
        "game_title": "Atlanta vs Green Bay",
        "kickoff_at": "2026-09-27T17:00:00.000Z",
        "league": "nfl",
        "sport": "football",
        "yes_side": {
          "code": "gb",
          "name": "Packers"
        }
      },
      "tags": [],
      "venue": "kalshi",
      "venue_quote": {
        "freshness": "verified",
        "market_id": "KXNFLGAME-26SEP27ATLGB-GB",
        "observed_at": "2026-08-31T12:00:00Z",
        "quote_method": "midpoint",
        "schema_version": "1",
        "selected_probability": 0.64,
        "venue": "kalshi",
        "venue_timestamp": "2026-08-31T12:00:00Z",
        "yes_ask": 0.64,
        "yes_bid": 0.64,
        "yes_last": null
      },
      "volume_24h": null
    }
  ],
  "venue_facets": [
    {
      "count": 2,
      "venue": "kalshi"
    }
…

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://quotient-api-gateway.onrender.com/api/v1/markets?max_forecast_age=48&sort=volume_desc&topic=oil'

# 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://quotient-api-gateway.onrender.com/api/v1/markets?max_forecast_age=48&sort=volume_desc&topic=oil' \
  | 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%2Fquotient-api-gateway.onrender.com%2Fapi%2Fv1%2Fmarkets
const res = await pay("https://quotient-api-gateway.onrender.com/api/v1/markets?max_forecast_age=48&sort=volume_desc&topic=oil");
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://quotient-api-gateway.onrender.com/api/v1/markets?max_forecast_age=48&sort=volume_desc&topic=oil")
    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

When	Result	HTTP	Time	Price
3 h ago	Passed	402	550 ms	$0.005
8 h ago	Passed	402	784 ms	$0.005
13 h ago	Passed	402	363 ms	$0.005
18 h ago	Passed	402	362 ms	$0.005
22 h ago	Passed	402	847 ms	$0.005

Show 10 older checks

27 h ago	Passed	402	427 ms	$0.005
31 h ago	Passed	402	853 ms	$0.005
35 h ago	Passed	402	917 ms	$0.005
39 h ago	Passed	402	381 ms	$0.005
44 h ago	Passed	402	826 ms	$0.005
2 days ago	Passed	402	853 ms	$0.005
2 days ago	Passed	402	891 ms	$0.005
2 days ago	Passed	402	396 ms	$0.005
3 days ago	Passed	402	897 ms	$0.005
3 days ago	Passed	402	783 ms	$0.005

Trust score 79/ 100

Availability (30-day uptime)		30 / 30
Valid x402 challenge		15 / 15
Response time		7 / 10
Real paying agents (30 days)		7 / 15
Charges what it lists		10 / 10
Security scan		10 / 10
Verified owner		0 / 10

How the score works

Payment terms

Price: $0.005 per call
Listed at: $0.005
Token: USDC
Networks: Base
Pays to: 0xC3d0…97cB

Real usage

Paying agents: 5 in 30 days
Paid calls: 22 in 30 days
Last paid call: 2 days ago

Source: x402 Bazaar settlement data.

Is this your service?

Verify ownership to get the badge and 10 more trust points. Featured placement needs it too.

Verify ownership

Changed something? Check it again now and see what agents get.

Show the score

A badge for your README or docs. It updates with every check and links here.

Trust score

[![ToolVet trust score](https://toolvet.app/badge/markets-2.svg)](https://toolvet.app/s/markets-2)