x402 List

x402 Protocol Service Directory

SYNTHORA Trending Coins

Data imported

payment-ready 2026-08-04, probe currently failing

imported from the x402 Bazaar, not submitted by the operator · own this service? claim it · or ask to be removed

Returns the current list of trending coins sourced from the public CoinGecko search trending endpoint, with name, symbol, market cap rank and trend score. Paid per call in USDC on Base, with a declared free trial of 3 calls per wallet via the X-WALLET header.

Pay from $0.02 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

BASE URL https://crypto-trending.hergertsynthora.com ENDPOINTS 1 NETWORK Base ASSET USDC MEMBER SINCE 2026-07-20 MONITORED SINCE 2026-07-20

ASSESSMENT

updated 4h ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 89.4%
uptime 24h
0%
uptime 7d
0%
uptime 30d
89.4%
uptime 90d
89.4%
response p95
1987ms
avg response
1383ms
total checks
1,367

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

compliance A (14/14), stale (probe failing)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.02 (p68 in Data)
price (min)
$0.02
category percentile (min)
p68 in Data
endpoints / prices
1 / 1
model
flat
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
-
registrar
-
hosting
custom
domain created
---

Identity facts, not a risk score.

traction ---

This service shares a payout address and its probe has been failing, so its on-chain volume is suppressed until it responds again. Settlements on a shared address while a member is down are not attributed to it.

CHANGES

5 events, detecting since 2026-07-24

Payout, price, and schema changes detected on this service's x402 wire. A payout rotation at an unchanged price shows up here even when nothing else moves. Full feed at /changes.

changes price changed 12d ago (5 since 2026-07-24)

price changed · 12d ago

POST /service · eip155:8453 · USDC: 300020000

price changed · 18d ago

POST /service · eip155:8453 · USDC: 50003000

price changed · 19d ago

POST /service · eip155:8453 · USDC: 10005000

price changed · 19d ago

POST /service · eip155:8453 · USDC: 40001000

price changed · 19d ago

POST /service · eip155:8453 · USDC: 10004000

Amounts are on-wire atomic units in the named asset.

see all changes for this service

WHAT IT DOES

ai-derived

Provides real-time trending cryptocurrency data based on search interest and momentum

category
crypto-trending
in
body
auth
api key
cryptotrendingmarket-datadiscovery

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
POST /service Real-time trending coins by search interest and momentum, with rank and price change. Discovery signal for narrative/momentum agents. Free source. $0.005 USDC via x402 on Base. SYNTHORA. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure. $0.02 Base USDC header
1 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to POST /service returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i -X POST 'https://crypto-trending.hergertsynthora.com/service'
// 402 response (captured by monitor) · 1 payload · click to expand
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x10800a5a5B9d72251566EC651E862A8b4B427dE0",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "mimeType": "application/json",
        "resource": "https://crypto-trending.hergertsynthora.com/service",
        "description": "Real-time trending coins by search interest and momentum, with rank and price change. Discovery signal for narrative/momentum agents. Free source. $0.005 USDC via x402 on Base. SYNTHORA. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.",
        "maxAmountRequired": "20000",
        "maxTimeoutSeconds": 300
      }
    ],
    "freeTier": {
      "note": "send header X-WALLET: 0x<your Base address> for a free trial",
      "header": "X-WALLET",
      "callsPerWallet": 3
    },
    "resource": {
      "url": "https://crypto-trending.hergertsynthora.com/service",
      "mimeType": "application/json",
      "description": "Real-time trending coins by search interest and momentum, with rank and price change. Discovery signal for narrative/momentum agents. Free source. $0.005 USDC via x402 on Base. SYNTHORA. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {},
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "niche": "crypto-trending",
              "result": {}
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [],
                  "properties": {}
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "ok": {
                    "type": "boolean"
                  },
                  "type": "object",
                  "niche": {
                    "type": "string"
                  }
                }
              }
            }
          }
        }
      }
    },
    "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/synthora-trending-coins/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
07-20 · uptime 84.6% · 1902ms avg07-21 · uptime 83.3% · 2414ms avg07-22 · uptime 93.3% · 1401ms avg07-23 · uptime 61.1% · 2615ms avg07-24 · uptime 82.2% · 1787ms avg07-31 · uptime 92.2% · 1462ms avg08-02 · uptime 90.0% · 871ms avg08-04 · uptime 81.7% · 1139ms avg08-05 · uptime 0.0%08-06 · uptime 0.0%08-07 · uptime 0.0%08-08 · uptime 0.0%08-09 · uptime 0.0%08-10 · uptime 0.0%08-11 · uptime 0.0%08-12 · uptime 0.0%08-13 · uptime 0.0%07-20 · uptime 84.6% · 1902ms avg07-21 · uptime 83.3% · 2414ms avg07-22 · uptime 93.3% · 1401ms avg07-23 · uptime 61.1% · 2615ms avg07-24 · uptime 82.2% · 1787ms avg07-25 · uptime 96.7% · 1677ms avg07-26 · uptime 100.0% · 1189ms avg07-27 · uptime 96.7% · 1340ms avg07-28 · uptime 100.0% · 993ms avg07-29 · uptime 100.0% · 1128ms avg07-30 · uptime 97.8% · 1320ms avg07-31 · uptime 92.2% · 1462ms avg08-01 · uptime 100.0% · 938ms avg08-02 · uptime 90.0% · 871ms avg08-03 · uptime 97.8% · 968ms avg08-04 · uptime 81.7% · 1139ms avg08-05 · uptime 0.0%08-06 · uptime 0.0%08-07 · uptime 0.0%08-08 · uptime 0.0%08-09 · uptime 0.0%08-10 · uptime 0.0%08-11 · uptime 0.0%08-12 · uptime 0.0%08-13 · uptime 0.0%07-2008-13
30d UPTIME 89.4%
RESPONSE TIME
07-20 · 1902ms avg07-20 · 1902ms avg07-21 · 2414ms avg07-21 · 2414ms avg07-22 · 1401ms avg07-22 · 1401ms avg07-23 · 2615ms avg07-23 · 2615ms avg07-24 · 1787ms avg07-24 · 1787ms avg07-25 · 1677ms avg07-25 · 1677ms avg07-26 · 1189ms avg07-26 · 1189ms avg07-27 · 1340ms avg07-27 · 1340ms avg07-28 · 993ms avg07-28 · 993ms avg07-29 · 1128ms avg07-29 · 1128ms avg07-30 · 1320ms avg07-30 · 1320ms avg07-31 · 1462ms avg07-31 · 1462ms avg08-01 · 938ms avg08-01 · 938ms avg08-02 · 871ms avg08-02 · 871ms avg08-03 · 968ms avg08-03 · 968ms avg08-04 · 1139ms avg08-04 · 1139ms avg08-05 · 0ms avg08-05 · 0ms avg08-06 · 0ms avg08-06 · 0ms avg08-07 · 0ms avg08-07 · 0ms avg08-08 · 0ms avg08-08 · 0ms avg08-09 · 0ms avg08-09 · 0ms avg08-10 · 0ms avg08-10 · 0ms avg08-11 · 0ms avg08-11 · 0ms avg08-12 · 0ms avg08-12 · 0ms avg08-13 · 0ms avg08-13 · 0ms avg07-2008-13
AVG RESP 1383ms
PRICE (captured 402, USD)
07-20 · $0.00107-25 · $0.00507-26 · $0.00308-01 · $0.0208-13 · $0.02$0.0207-2008-13
SUB-SCORES (uptime + x402 compliance)
07-20 compliance: 100% checks07-21 uptime: 84.8% compliance: 100% checks07-22 uptime: 87.7% compliance: 100% checks07-23 uptime: 79.6% compliance: 100% checks07-24 uptime: 80.0% compliance: 100% checks07-25 uptime: 82.5% compliance: 100% checks07-26 uptime: 85.5% compliance: 100% checks07-27 uptime: 87.2% compliance: 100% checks07-28 uptime: 88.9% compliance: 100% checks07-29 uptime: 90.1% compliance: 100% checks07-30 uptime: 90.9% compliance: 100% checks07-31 uptime: 91.1% compliance: 100% checks08-01 uptime: 91.8% compliance: 100% checks08-02 uptime: 91.7% compliance: 100% checks08-03 uptime: 92.1% compliance: 100% checks08-04 uptime: 91.8% compliance: 100% checks08-05 uptime: 91.5% compliance: 100% checks08-06 uptime: 91.2% compliance: 100% checks08-07 uptime: 90.9% compliance: 100% checks08-08 uptime: 90.7% compliance: 100% checks08-09 uptime: 90.4% compliance: 100% checks08-10 uptime: 90.1% compliance: 100% checks08-11 uptime: 89.8% compliance: 100% checks08-12 uptime: 89.6% compliance: 100% checks08-13 uptime: 89.4% compliance: 100% checksuptimecompliance07-2008-13

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

PILLARS OVER TIME (measured)

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 shares a payout address and its probe has been failing, so its on-chain volume is suppressed until it responds again. Settlements on a shared address while a member is down are not attributed to it.
DISTINCT BUYERS
This service shares a payout address and its probe has been failing, so its distinct on-chain buyers are suppressed until it responds again. Settlements on a shared address while a member is down are not attributed to it.

COMPLIANCE

14/14 checks pass · grade A · stale (probe failing)

last 402 captured 2026-08-01 · last up 2026-08-04

  • 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
○ DOWN 235ms bad_status: unexpected HTTP 404
○ DOWN 441ms bad_status: unexpected HTTP 404
○ DOWN 311ms bad_status: unexpected HTTP 404
○ DOWN 399ms bad_status: unexpected HTTP 404
○ DOWN 207ms bad_status: unexpected HTTP 404
○ DOWN 155ms bad_status: unexpected HTTP 404
○ DOWN 745ms bad_status: unexpected HTTP 404
○ DOWN 311ms bad_status: unexpected HTTP 404
○ DOWN 198ms bad_status: unexpected HTTP 404
○ DOWN 170ms bad_status: unexpected HTTP 404
○ DOWN 299ms bad_status: unexpected HTTP 404
○ DOWN 264ms bad_status: unexpected HTTP 404
○ DOWN 1511ms bad_status: unexpected HTTP 404
○ DOWN 238ms bad_status: unexpected HTTP 404
○ DOWN 518ms bad_status: unexpected HTTP 404
○ DOWN 142ms bad_status: unexpected HTTP 404
○ DOWN 182ms bad_status: unexpected HTTP 404
○ DOWN 439ms bad_status: unexpected HTTP 404

EMBED THIS BADGE

Show that SYNTHORA Trending Coins is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

SYNTHORA Trending Coins listed on x402-list
status
SYNTHORA Trending Coins uptime on x402-list
live uptime
// HTML
<a href="https://x402-list.com/services/synthora-trending-coins?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/synthora-trending-coins.svg" alt="SYNTHORA Trending Coins listed on x402-list" height="28">
</a>
// Markdown
[![SYNTHORA Trending Coins on x402-list](https://x402-list.com/badge/synthora-trending-coins.svg)](https://x402-list.com/services/synthora-trending-coins?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/synthora-trending-coins?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/synthora-trending-coins.svg?data=uptime" alt="SYNTHORA Trending Coins uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

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[ update this listing ]

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