x402 List

x402 Protocol Service Directory

LoneStarOracle ContractCheck

Blockchain PAYMENT-READY imported

payment-ready until 2026-08-20

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

Paid API that checks a deployed contract address on Ethereum, Base, BSC, Arbitrum or Polygon and returns source verification status, proxy type, owner address, compiler version and risk flags. $0.05 per call via x402.

Pay from $0.05 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.

first settlement 2026-04-30 · $5.90 all-time · settled via coinbase

BASE URL https://contract.lonestaroracle.xyz ENDPOINTS 1 NETWORK Base / Solana 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 100%
uptime 24h
100%
uptime 7d
100%
uptime 30d
100%
uptime 90d
100%
response p95
1697ms
avg response
863ms
total checks
2,130

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

compliance A (14/14)

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

jump to compliance checklist

price $0.05 (p80 in Blockchain)
price (min)
$0.05
category percentile (min)
p80 in Blockchain
endpoints / prices
1 / 1
model
flat
stability
100%
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
110d
registrar
NameCheap, Inc.
hosting
custom
domain created
2026-04-22

Identity facts, not a risk score.

traction $1.1869565217 30d · 36 buyers
volume 30d
$1.1869565217
buyers 30d
36
settlements 30d
796
first settlement
2026-04-30
last settlement
2026-08-13
top buyer share
44% of 30d volume
trend 7d vs 30d
1.17x the 30d daily rate
networks
eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time
$5.90
settlements all-time
2,311
median settlement 30d
$0.05
max settlement 30d
$1.00
settled via
coinbase ($54.60, 796 tx)

Attributed pro-quota: this payout address is shared, so volume is the operator-level figure divided by the services sharing it, while buyer and transaction counts stay whole. A declared convention, not an individually observed measure, and still a conservative undercount.

Currently sharing this payout address with AeroCheck, AgriPulse, CascadeWatch, ComputePulse, ConsumerPulse, CopperheadAI, CottonmouthAI, CrownBlock, CyclePulse, DeFiRisk, DocEdge, Floyd Coding Agent, FundingRates, GovEdge, GridPulse, IndustrialMetals, LaborPulse, LatAmPulse, LeaseEdge, LoneStarOracle ChainScout, LoneStarOracle EarningsCalendar, LoneStarOracle EquityScope, LoneStarOracle GeoPulse, LoneStarOracle InsiderFlow, LoneStarOracle Liquidations, LoneStarOracle MacroPulse, LoneStarOracle NewsSentiment, LoneStarOracle OptionsFlow, LoneStarOracle PortfolioRisk, LoneStarOracle TokenLaunch, LoneStarOracle TokenScope, LoneStarOracle WealthPulse, LoneStarOracle WeatherOracle, LoneStarOracle WhaleAlert, OpenInterest, RattlerAI, RealEstatePulse, RWA Risk, StablePulse, StakeEdge, StrategicMaterials, SupplyChainPulse, TechAnalysis, TradePulse, WalletRisk.

Top buyer share is a concentration signal, not part of the ranking score.

CHANGES

2 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 schema changed 2d ago (2 since 2026-07-24)

schema changed · 2d ago

schema removed GET /verify exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"}

schema added GET /verify exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"}

schema changed · 7d ago

schema removed GET /verify exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"}

schema added GET /verify exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"}

see all changes for this service

WHAT IT DOES

ai-derived

Verifies blockchain contracts

category
blockchain-verification
in
query params
blockchaincontract-verification

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
GET /verify $0.05 Base/Solana USDC header
1 endpoints

REQUEST / RESPONSE EXAMPLE

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

// request
curl -i 'https://contract.lonestaroracle.xyz/verify'
// 402 response (captured by monitor) · 1 payload · click to expand
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x52Ab53912D37759B2ad364f22dD06B16714b6C06",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
        },
        "payTo": "3nmeVj5m9Uq2hSTfsVsn3tJMHRJQNMKR1AjzyUJbrSgw",
        "amount": "50000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://contract.lonestaroracle.xyz/verify",
      "tags": [
        "contract",
        "security",
        "honeypot",
        "rug-pull",
        "defi"
      ],
      "iconUrl": "https://lonestaroracle.xyz/lso_logo.svg",
      "mimeType": "",
      "description": "Smart contract verification and security analysis on Ethereum Base BSC Arbitrum Polygon",
      "serviceName": "LoneStarOracle ContractCheck"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "chain": "eth",
              "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "wallet": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
            }
          },
          "output": {
            "type": "object",
            "format": "json",
            "example": {
              "name": "USD Coin",
              "chain": "eth",
              "symbol": "USDC",
              "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
              "summary": "USDC (USD Coin) on ETH: Risk 0/10 (clean) | No flags",
              "cex_list": [
                "Binance",
                "Coinbase"
              ],
              "is_proxy": true,
              "cex_listed": true,
              "dex_listed": true,
              "risk_flags": [],
              "risk_label": "clean",
              "risk_score": 0,
              "trust_list": true,
              "buy_tax_pct": 0,
              "is_honeypot": false,
              "is_mintable": false,
              "hidden_owner": false,
              "holder_count": 6899288,
              "sell_tax_pct": 0,
              "is_open_source": true,
              "has_selfdestruct": false
            }
          }
        },
        "schema": {
          "name": "LoneStarOracle — ContractCheck",
          "tags": [
            "contract",
            "security",
            "honeypot",
            "rug-pull",
            "defi",
            "token",
            "audit"
          ],
          "type": "object",
          "version": "1.0.0",
          "category": "blockchain",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "type": "object",
                  "properties": {
                    "chain": {
                      "type": "string",
                      "title": "Chain",
                      "default": "eth"
                    },
                    "token": {
                      "type": "string",
                      "title": "Token"
                    },
                    "wallet": {
                      "type": "string",
                      "title": "Wallet"
                    },
                    "address": {
                      "type": "string",
                      "title": "Address"
                    },
                    "contract": {
                      "type": "string",
                      "title": "Contract"
                    }
                  }
                }
              }
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "name": "USD Coin",
                  "chain": "eth",
                  "symbol": "USDC",
                  "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
                  "summary": "USDC (USD Coin) on ETH: Risk 0/10 (clean) | No flags",
                  "cex_list": [
                    "Binance",
                    "Coinbase"
                  ],
                  "is_proxy": true,
                  "cex_listed": true,
                  "dex_listed": true,
                  "risk_flags": [],
                  "risk_label": "clean",
                  "risk_score": 0,
                  "trust_list": true,
                  "buy_tax_pct": 0,
                  "is_honeypot": false,
                  "is_mintable": false,
                  "hidden_owner": false,
                  "holder_count": 6899288,
                  "sell_tax_pct": 0,
                  "is_open_source": true,
                  "has_selfdestruct": false
                }
              }
            }
          },
          "description": "AI-powered smart contract security audit. Scans for honeypots, rug functions, hidden ownership, tax manipulation, and 15+ risk vectors via GoPlus, then generates a plain-English Claude AI verdict explaining the flags and whether the contract is safe to interact with. Returns risk score 0-10, all active flags, token metadata, and an actionable AI assessment. Supports Ethereum, Base, BSC, Arbitrum, Polygon."
        }
      },
      "bc_kg64bd18": {}
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 7d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/lonestaroracle-contractcheck/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
08-07 · uptime 100.0% · 846ms avg08-08 · uptime 100.0% · 888ms avg08-09 · uptime 100.0% · 1011ms avg08-10 · uptime 100.0% · 938ms avg08-11 · uptime 100.0% · 850ms avg08-12 · uptime 100.0% · 728ms avg08-13 · uptime 100.0% · 1002ms avg08-0708-13
7d UPTIME 100%
RESPONSE TIME
08-07 · 846ms avg08-07 · 846ms avg08-08 · 888ms avg08-08 · 888ms avg08-09 · 1011ms avg08-09 · 1011ms avg08-10 · 938ms avg08-10 · 938ms avg08-11 · 850ms avg08-11 · 850ms avg08-12 · 728ms avg08-12 · 728ms avg08-13 · 1002ms avg08-13 · 1002ms avg08-0708-13
AVG RESP 864ms
PRICE (captured 402, USD)
08-06 · $0.0508-13 · $0.05$0.0508-0608-13
SUB-SCORES (uptime + x402 compliance)
08-06 uptime: 100.0% compliance: 100% checks08-07 uptime: 100.0% compliance: 100% checks08-08 uptime: 100.0% compliance: 100% checks08-09 uptime: 100.0% compliance: 100% checks08-10 uptime: 100.0% compliance: 100% checks08-11 uptime: 100.0% compliance: 100% checks08-12 uptime: 100.0% compliance: 100% checks08-13 uptime: 100.0% compliance: 100% checksuptimecompliance08-0608-13

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)
08-07 · $208-08 · $0.3008-09 · $308-10 · $308-11 · $508-12 · $108-13 · $0.35peak $508-0708-13

Shared payout address (45 other services). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Where a per-service figure is attributed, the assessment block and the ranking, it is the address total divided pro-quota by the 46 services sharing it: a declared convention, not an individually observed measure.

DISTINCT BUYERS
08-07 · 2 buyers08-08 · 2 buyers08-09 · 2 buyers08-10 · 4 buyers08-11 · 4 buyers08-12 · 4 buyers08-13 · 3 buyerspeak 4 buyers08-0708-13

Shared payout address (45 other services). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Per-service buyer and transaction counts are shown whole (integers), not divided; only volume is attributed pro-quota. A declared convention, not an individually observed measure.

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-08-11 · last up 2026-08-13

  • 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
● OK 888ms
● OK 487ms
● OK 770ms
● OK 875ms
● OK 1007ms
● SLOW 1665ms
● OK 566ms
● OK 1025ms
● OK 1003ms
● SLOW 1490ms
● SLOW 1740ms
● OK 1084ms
● OK 997ms
● SLOW 1563ms
● OK 918ms
● OK 575ms
● OK 727ms
● OK 605ms

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