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x402 Protocol Service Directory

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Polymarket Signal Detector

Finance PAYMENT-READY

payment-ready until 2026-09-14

Polymarket wallet-reputation and insider-signal data, gated by x402: per-wallet reputation lookup, per-market wallet-flow by persona, a free-to-verify signal track record, resolved-signal drill-down, feedback channel, and push-notification signal subscriptions (day/week/month).

Pay from $0.01 to $33.00 in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

BASE URL https://x402.sashco.ca │ WEBSITE https://x402.sashco.ca │ ENDPOINTS 8 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-08-11 │ MONITORED SINCE 2026-08-11

VERDICT

ranking generation 3

solid 88/100 #40 of 78 in Finance by measured score

What the score read on this service: status degraded, 97.7% uptime 30d, 502ms response p95, x402 compliance 13 of 13, $0.01 price against the category. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

It is a score inside Finance, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 78 listings, this one among them. That set is wider than the 78 the position above is counted against, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

ALTERNATIVES IN FINANCE

Other Finance services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).

Ranked alternative x402 services in the same category, with band, measured score, 30-day uptime and 30-day on-chain settlement volume
SERVICE BAND SCORE UPTIME 30D VOL 30D
Bitrefill strong 99 100% ---
toon.haus Financial Data API strong 99 100% ---
TickersFeed strong 98 100% ---
Losbeto — Cross-Asset Market Intelligence strong 98 98.6% ---
Stock Trends Market Intelligence strong 97 99.9% ---
5 of 77 other ranked services in Finance · see the whole category

ASSESSMENT

updated 5h ago

The parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.

reliability 97.7%
uptime 24h
100%
uptime 7d
96.7%
uptime 30d
97.7%
uptime 90d
97.7%
response p95
502ms
avg response
308ms
total checks
1,982

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (13/13)

13 of 13 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.01 to $33.00 (p46 in Finance)
price (min)
$0.01
price (max)
$33.00
category percentile (min)
p46 in Finance
category percentile (max)
p97 in Finance
endpoints / prices
8 / 6
model
tiered
stability
0%
risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
2143d
registrar
Go Daddy Domains Canada, Inc
hosting
custom
domain created
2020-10-19

Identity facts, not a risk score.

traction ---

This service settles on a network x402-list does not measure yet, so on-chain volume is not counted here. Shown as unmeasured, not zero.

WHAT IT DOES

ai-derived

No AI synthesis has been produced for this service yet.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
POST /feedback $0.01 Base USDC header
GET /markets/0x3733a1b647e7364095736ab0966465d896a84cf3b6bc1695ca1f26c3239b3868/wallet-flow $0.10 Base USDC header
GET /signals/resolved $0.01 Base USDC -
POST /signals/subscribe/day $2.00 Base USDC header
POST /signals/subscribe/month $33.00 Base USDC header
POST /signals/subscribe/week $10.00 Base USDC header
GET /track-record $0.01 Base USDC -
GET /wallets/0x0000000000000000000000000000000000dEaD $0.02 Base USDC header
8 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /markets/0x3733a1b647e7364095736ab0966465d896a84cf3b6bc1695ca1f26c3239b3868/wallet-flow returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i 'https://x402.sashco.ca/markets/0x3733a1b647e7364095736ab0966465d896a84cf3b6bc1695ca1f26c3239b3868/wallet-flow'
// 402 response (captured by monitor) · 6 payloads · click to expand 
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xBE6dc051DE3A985399b066685a50430303e38405",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://x402.sashco.ca/wallets/0x0000000000000000000000000000000000dEaD",
      "tags": [
        "prediction-markets",
        "polymarket",
        "wallet-reputation"
      ],
      "mimeType": "application/json",
      "description": "Wallet reputation summary: trade/volume stats, persona tags, realized PnL, open position count, and conviction/concentration scores. Does not include per-trade history.",
      "serviceName": "Polymarket Signal Detector"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "pathParams": {
              "var1": "0x0000000000000000000000000000000000dEaD"
            }
          },
          "output": {
            "type": "object",
            "format": "json"
          }
        },
        "schema": {
          "type": "object",
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          },
          "description": "Wallet reputation summary: trade/volume stats, persona tags, realized PnL, open position count, and conviction/concentration scores. Does not include per-trade history."
        },
        "routeTemplate": "/wallets/:var1"
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xBE6dc051DE3A985399b066685a50430303e38405",
        "amount": "100000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://x402.sashco.ca/markets/0x3733a1b647e7364095736ab0966465d896a84cf3b6bc1695ca1f26c3239b3868/wallet-flow",
      "tags": [
        "prediction-markets",
        "polymarket",
        "wallet-reputation"
      ],
      "mimeType": "application/json",
      "description": "Per-market trade volume/count broken out by persona and side, as of ~24 hours ago.",
      "serviceName": "Polymarket Signal Detector"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "pathParams": {
              "var1": "0x3733a1b647e7364095736ab0966465d896a84cf3b6bc1695ca1f26c3239b3868"
            }
          },
          "output": {
            "type": "object",
            "format": "json"
          }
        },
        "schema": {
          "type": "object",
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          },
          "description": "Per-market trade volume/count broken out by persona and side, as of ~24 hours ago."
        },
        "routeTemplate": "/markets/:var1/wallet-flow"
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xBE6dc051DE3A985399b066685a50430303e38405",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://x402.sashco.ca/feedback",
      "tags": [
        "prediction-markets",
        "polymarket",
        "wallet-reputation"
      ],
      "mimeType": "application/json",
      "description": "Submit bug/like/dislike/feature feedback, attributed to the paying wallet.",
      "serviceName": "Polymarket Signal Detector"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "text": "...",
              "category": "bug"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "object",
            "format": "json"
          }
        },
        "schema": {
          "type": "object",
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          },
          "description": "Submit bug/like/dislike/feature feedback, attributed to the paying wallet."
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xBE6dc051DE3A985399b066685a50430303e38405",
        "amount": "2000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://x402.sashco.ca/signals/subscribe/day",
      "tags": [
        "prediction-markets",
        "polymarket",
        "wallet-reputation"
      ],
      "mimeType": "application/json",
      "description": "24-hour push-notification pass: every fired signal matching your persona/market filters is POSTed to your callback_url as it happens. callback_url is required at subscribe time. Sports-category markets are excluded upstream of every persona and can't be re-enabled via ignored_categories. See GET /track-record's implied_daily_value_usd for the checkable math behind this price.",
      "serviceName": "Polymarket Signal Detector"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "personas": [
                "smart_money"
              ],
              "callback_url": "https://agent.example.com/webhook",
              "min_stake_usd": null,
              "ignored_categories": [],
              "ignored_condition_ids": []
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "object",
            "format": "json"
          }
        },
        "schema": {
          "type": "object",
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          },
          "description": "24-hour push-notification pass: every fired signal matching your persona/market filters is POSTed to your callback_url as it happens. callback_url is required at subscribe time. Sports-category markets are excluded upstream of every persona and can't be re-enabled via ignored_categories. See GET /track-record's implied_daily_value_usd for the checkable math behind this price."
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xBE6dc051DE3A985399b066685a50430303e38405",
        "amount": "10000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://x402.sashco.ca/signals/subscribe/week",
      "tags": [
        "prediction-markets",
        "polymarket",
        "wallet-reputation"
      ],
      "mimeType": "application/json",
      "description": "7-day push-notification pass -- same delivery as the 24-hour tier, priced at a bulk discount (5x the day price, not 7x). callback_url is required at subscribe time. Sports-category markets are excluded upstream of every persona and can't be re-enabled via ignored_categories.",
      "serviceName": "Polymarket Signal Detector"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "personas": [
                "smart_money"
              ],
              "callback_url": "https://agent.example.com/webhook",
              "min_stake_usd": null,
              "ignored_categories": [],
              "ignored_condition_ids": []
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "object",
            "format": "json"
          }
        },
        "schema": {
          "type": "object",
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          },
          "description": "7-day push-notification pass -- same delivery as the 24-hour tier, priced at a bulk discount (5x the day price, not 7x). callback_url is required at subscribe time. Sports-category markets are excluded upstream of every persona and can't be re-enabled via ignored_categories."
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xBE6dc051DE3A985399b066685a50430303e38405",
        "amount": "33000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://x402.sashco.ca/signals/subscribe/month",
      "tags": [
        "prediction-markets",
        "polymarket",
        "wallet-reputation"
      ],
      "mimeType": "application/json",
      "description": "30-day push-notification pass -- same delivery as the 24-hour tier, priced at a bulk discount (~16.7x the day price, not 30x). callback_url is required at subscribe time. Sports-category markets are excluded upstream of every persona and can't be re-enabled via ignored_categories.",
      "serviceName": "Polymarket Signal Detector"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "personas": [
                "smart_money"
              ],
              "callback_url": "https://agent.example.com/webhook",
              "min_stake_usd": null,
              "ignored_categories": [],
              "ignored_condition_ids": []
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "object",
            "format": "json"
          }
        },
        "schema": {
          "type": "object",
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          },
          "description": "30-day push-notification pass -- same delivery as the 24-hour tier, priced at a bulk discount (~16.7x the day price, not 30x). callback_url is required at subscribe time. Sports-category markets are excluded upstream of every persona and can't be re-enabled via ignored_categories."
        }
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/polymarket-signal-detector/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME
08-12 · uptime 79.3% · 199ms avg08-23 · uptime 83.1% · 270ms avg08-24 · uptime 0.0%08-25 · uptime 0.0%09-02 · uptime 92.2% · 497ms avg09-03 · uptime 0.0%08-11 · uptime 100.0% · 251ms avg08-12 · uptime 79.3% · 199ms avg08-13 · uptime 98.3% · 186ms avg08-14 · uptime 100.0% · 176ms avg08-15 · uptime 100.0% · 199ms avg08-16 · uptime 100.0% · 207ms avg08-17 · uptime 100.0% · 259ms avg08-18 · uptime 100.0% · 345ms avg08-19 · uptime 100.0% · 362ms avg08-20 · uptime 100.0% · 319ms avg08-21 · uptime 100.0% · 298ms avg08-22 · uptime 100.0% · 337ms avg08-23 · uptime 83.1% · 270ms avg08-24 · uptime 0.0%08-25 · uptime 0.0%08-26 · uptime 100.0% · 258ms avg08-27 · uptime 100.0% · 397ms avg08-28 · uptime 100.0% · 307ms avg08-29 · uptime 100.0% · 403ms avg08-30 · uptime 98.9% · 318ms avg08-31 · uptime 100.0% · 442ms avg09-01 · uptime 100.0% · 420ms avg09-02 · uptime 92.2% · 497ms avg09-03 · uptime 0.0%09-04 · uptime 98.4% · 186ms avg09-05 · uptime 100.0% · 266ms avg09-06 · uptime 100.0% · 316ms avg09-07 · uptime 100.0% · 322ms avg08-1109-07
30d UPTIME 97.7%
RESPONSE TIME
08-11 · 251ms avg08-11 · 251ms avg08-12 · 199ms avg08-12 · 199ms avg08-13 · 186ms avg08-13 · 186ms avg08-14 · 176ms avg08-14 · 176ms avg08-15 · 199ms avg08-15 · 199ms avg08-16 · 207ms avg08-16 · 207ms avg08-17 · 259ms avg08-17 · 259ms avg08-18 · 345ms avg08-18 · 345ms avg08-19 · 362ms avg08-19 · 362ms avg08-20 · 319ms avg08-20 · 319ms avg08-21 · 298ms avg08-21 · 298ms avg08-22 · 337ms avg08-22 · 337ms avg08-23 · 270ms avg08-23 · 270ms avg08-24 · 0ms avg08-24 · 0ms avg08-25 · 0ms avg08-25 · 0ms avg08-26 · 258ms avg08-26 · 258ms avg08-27 · 397ms avg08-27 · 397ms avg08-28 · 307ms avg08-28 · 307ms avg08-29 · 403ms avg08-29 · 403ms avg08-30 · 318ms avg08-30 · 318ms avg08-31 · 442ms avg08-31 · 442ms avg09-01 · 420ms avg09-01 · 420ms avg09-02 · 497ms avg09-02 · 497ms avg09-03 · 0ms avg09-03 · 0ms avg09-04 · 186ms avg09-04 · 186ms avg09-05 · 266ms avg09-05 · 266ms avg09-06 · 316ms avg09-06 · 316ms avg09-07 · 322ms avg09-07 · 322ms avg08-1109-07
AVG RESP 309ms
PRICE (captured 402, USD)
08-11 · $0.0609-07 · $0.06$0.0608-1109-07

Median across 8 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
08-11 uptime: 100.0% compliance: 100% checks08-12 uptime: 89.1% compliance: 100% checks08-13 uptime: 91.3% compliance: 100% checks08-14 uptime: 94.8% compliance: 100% checks08-15 uptime: 96.3% compliance: 100% checks08-16 uptime: 97.1% compliance: 100% checks08-17 uptime: 97.6% compliance: 100% checks08-18 uptime: 97.9% compliance: 100% checks08-19 uptime: 98.2% compliance: 100% checks08-20 uptime: 98.4% compliance: 100% checks08-21 uptime: 98.6% compliance: 100% checks08-22 uptime: 98.7% compliance: 100% checks08-23 uptime: 97.9% compliance: 100% checks08-24 uptime: 97.5% compliance: 100% checks08-25 uptime: 97.1% compliance: 100% checks08-26 uptime: 97.2% compliance: 100% checks08-27 uptime: 97.3% compliance: 100% checks08-28 uptime: 97.5% compliance: 100% checks08-29 uptime: 97.7% compliance: 100% checks08-30 uptime: 97.8% compliance: 100% checks08-31 uptime: 97.9% compliance: 100% checks09-01 uptime: 98.0% compliance: 100% checks09-02 uptime: 98.1% compliance: 100% checks09-03 uptime: 97.4% compliance: 100% checks09-04 uptime: 97.4% compliance: 100% checks09-05 uptime: 97.5% compliance: 100% checks09-06 uptime: 97.7% compliance: 100% checks09-07 uptime: 97.7% compliance: 100% checksuptimecompliance08-1109-07

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)
price percentile in Finance
site signals present (of 6)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)
This service settles on a network x402-list does not measure yet, so on-chain volume is not counted here. Shown as unmeasured, not zero.
DISTINCT BUYERS
This service settles on a network x402-list does not measure yet, so distinct on-chain buyers are not counted here. Shown as unmeasured, not zero.

COMPLIANCE

13/13 checks pass · grade A

last 402 captured 2026-08-11 · last up 2026-09-07

  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

SITE PILLARS

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
recent checks (18) live · click to expand
TIME STATUS RESP CAUSE
● SLOW 483ms
● SLOW 464ms
● OK 324ms
● OK 336ms
● OK 288ms
● OK 280ms
● OK 239ms
● OK 423ms
● OK 407ms
● OK 294ms
● OK 307ms
● OK 284ms
● OK 264ms
● OK 388ms
● SLOW 554ms
● OK 361ms
● OK 261ms
● OK 312ms
18 of 2,001 checks · live count

EMBED THIS BADGE

Show that Polymarket Signal Detector is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

Polymarket Signal Detector listed on x402-list
status
Polymarket Signal Detector uptime on x402-list
live uptime
// HTML
<a href="https://x402-list.com/services/polymarket-signal-detector?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/polymarket-signal-detector.svg" alt="Polymarket Signal Detector listed on x402-list" height="28">
</a>
// Markdown
[![Polymarket Signal Detector on x402-list](https://x402-list.com/badge/polymarket-signal-detector.svg)](https://x402-list.com/services/polymarket-signal-detector?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/polymarket-signal-detector?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/polymarket-signal-detector.svg?data=uptime" alt="Polymarket Signal Detector uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]

Earn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.

[ verify this service ($0.25) ]

To request delisting, email info@x402-list.com or update your listing at /services/polymarket-signal-detector/update.