●

SQLGuard

Execution Certificate Firewall: prepaid x402 USDC credits for sandboxed SQL validation + Ed25519 attestations before agent production writes. MCP + HTTP. Base mainnet. First settle proven.

Pay from $0.10 to $149.00 in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

first settlement 2026-07-28 · $0.46 all-time · settled via coinbase

BASE URL https://sqlguard.io │ WEBSITE https://sqlguard.io/v1/catalog │ ENDPOINTS 4 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-07-28 │ MONITORED SINCE 2026-07-28

ASSESSMENT

updated 5h 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: 489ms
avg response: 262ms
total checks: 24

compliance A (14/14)

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

jump to compliance checklist

price $0.10 to $149.00 (p80 in AI)

price (min): $0.10
price (max): $149.00
category percentile (min): p80 in AI
category percentile (max): p99 in AI
endpoints / prices: 4 / 4
model: tiered
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: -
registrar: -
hosting: custom
domain created: ---

Identity facts, not a risk score.

traction $0.46 30d · 2 buyers

volume 30d: $0.46
buyers 30d: 2
settlements 30d: 7
first settlement: 2026-07-28
last settlement: 2026-07-28
top buyer share: 89% of 30d volume
trend 7d vs 30d: 4.29x the 30d daily rate
networks: eip155:8453
volume all-time: $0.46
settlements all-time: 7
median settlement 30d: $0.05
max settlement 30d: $0.10
settled via: coinbase

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

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

WHAT IT DOES

ai-derived

A service that provides execution certificates for autonomous agents writing SQL queries

category: sql-security
in: body

sqlsecurityvalidationcertificates

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

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD	PATH	PRICE	NETWORK	ASSET
POST	/v1/credits/buy/builder	$39.00	Base	USDC
POST	/v1/credits/buy/micro	$0.10	Base	USDC
POST	/v1/credits/buy/starter	$10.00	Base	USDC
POST	/v1/credits/buy/team	$149.00	Base	USDC

4 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to POST /v1/credits/buy/builder 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://sqlguard.io/v1/credits/buy/builder'

// 402 response (captured by monitor) · 4 payloads · click to expand

[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xC8d524703f1751b565a220087D1d4c44a413C1D7",
        "amount": "100000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://sqlguard.io/v1/credits/buy/micro",
      "tags": [
        "database",
        "sql",
        "ddl",
        "authorize",
        "security"
      ],
      "iconUrl": "https://sqlguard.io/favicon.png",
      "mimeType": "application/json",
      "description": "Authorize mutating production SQL before execute — Execution Certificate Firewall. Prepaid credits; sandbox-validate INSERT/UPDATE/DELETE/DDL; Ed25519 PASS cert. Entry $0.10.",
      "serviceName": "SQLGuard"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "agent_id": "0xYourAgentOrWallet"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "bundle": "micro",
              "balance": 5,
              "agent_id": "0xYourAgentOrWallet",
              "credits_added": 5
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "required": [
                    "agent_id"
                  ],
                  "properties": {
                    "agent_id": {
                      "type": "string",
                      "description": "Stable agent or wallet id that receives prepaid validate credits after x402 settle"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "ok": {
                      "type": "boolean"
                    },
                    "bundle": {
                      "type": "string"
                    },
                    "balance": {
                      "type": "number"
                    },
                    "agent_id": {
                      "type": "string"
                    },
                    "credits_added": {
                      "type": "number"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xC8d524703f1751b565a220087D1d4c44a413C1D7",
        "amount": "10000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://sqlguard.io/v1/credits/buy/starter",
      "tags": [
        "database",
        "sql",
        "ddl",
        "authorize",
        "security"
      ],
      "iconUrl": "https://sqlguard.io/favicon.png",
      "mimeType": "application/json",
      "description": "Database mutation authorize layer — prepaid Execution Certificate credits for production INSERT/UPDATE/DELETE/DDL. Sandbox policy + Ed25519 verify before write.",
      "serviceName": "SQLGuard"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "agent_id": "0xYourAgentOrWallet"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "bundle": "starter",
              "balance": 500,
              "agent_id": "0xYourAgentOrWallet",
              "credits_added": 500
            }
          }
        },
        "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": {
                  "required": [
                    "agent_id"
                  ],
                  "properties": {
                    "agent_id": {
                      "type": "string",
                      "description": "Stable agent or wallet id that receives prepaid validate credits after x402 settle"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "ok": {
                      "type": "boolean"
                    },
                    "bundle": {
                      "type": "string"
                    },
                    "balance": {
                      "type": "number"
                    },
                    "agent_id": {
                      "type": "string"
                    },
                    "credits_added": {
                      "type": "number"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xC8d524703f1751b565a220087D1d4c44a413C1D7",
        "amount": "39000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://sqlguard.io/v1/credits/buy/builder",
      "tags": [
        "database",
        "sql",
        "ddl",
        "authorize",
        "security"
      ],
      "iconUrl": "https://sqlguard.io/favicon.png",
      "mimeType": "application/json",
      "description": "SQL authorize / DDL safety gate for agents — Execution Certificate Firewall credits. Validate mutating SQL in sandbox; require verified PASS cert before production execute.",
      "serviceName": "SQLGuard"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "agent_id": "0xYourAgentOrWallet"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "bundle": "builder",
              "balance": 2500,
              "agent_id": "0xYourAgentOrWallet",
              "credits_added": 2500
            }
          }
        },
        "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": {
                  "required": [
                    "agent_id"
                  ],
                  "properties": {
                    "agent_id": {
                      "type": "string",
                      "description": "Stable agent or wallet id that receives prepaid validate credits after x402 settle"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "ok": {
                      "type": "boolean"
                    },
                    "bundle": {
                      "type": "string"
                    },
                    "balance": {
                      "type": "number"
                    },
                    "agent_id": {
                      "type": "string"
                    },
                    "credits_added": {
                      "type": "number"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xC8d524703f1751b565a220087D1d4c44a413C1D7",
        "amount": "149000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://sqlguard.io/v1/credits/buy/team",
      "tags": [
        "database",
        "sql",
        "ddl",
        "authorize",
        "security"
      ],
      "iconUrl": "https://sqlguard.io/favicon.png",
      "mimeType": "application/json",
      "description": "Multi-agent SQL write gate — team prepaid credits for Execution Certificate Firewall. Authorize production database mutations before execute.",
      "serviceName": "SQLGuard"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "agent_id": "0xYourAgentOrWallet"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "bundle": "team",
              "balance": 12000,
              "agent_id": "0xYourAgentOrWallet",
              "credits_added": 12000
            }
          }
        },
        "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": {
                  "required": [
                    "agent_id"
                  ],
                  "properties": {
                    "agent_id": {
                      "type": "string",
                      "description": "Stable agent or wallet id that receives prepaid validate credits after x402 settle"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "ok": {
                      "type": "boolean"
                    },
                    "bundle": {
                      "type": "string"
                    },
                    "balance": {
                      "type": "number"
                    },
                    "agent_id": {
                      "type": "string"
                    },
                    "credits_added": {
                      "type": "number"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts share the 7d window selected here. Every series is also served as JSON at /api/v1/services/sqlguard/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

7d UPTIME 97.6%

RESPONSE TIME

AVG RESP 245ms

PRICE (captured 402, USD)

Median across 4 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)

VOLUME (on-chain settlement, USD)

DISTINCT BUYERS

COMPLIANCE

14/14 checks pass · grade A

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) · click to expand

TIME STATUS RESP

22:31:04 UTC ● SLOW 381ms

22:15:06 UTC ● OK 199ms

21:59:04 UTC ● OK 174ms

21:43:14 UTC ○ DOWN 2501ms

21:27:05 UTC ● OK 265ms

21:11:06 UTC ● OK 85ms

20:55:05 UTC ● OK 122ms

20:39:04 UTC ● OK 130ms

20:23:05 UTC ● OK 245ms

20:07:04 UTC ● OK 241ms

19:51:04 UTC ● OK 118ms

19:35:05 UTC ● OK 229ms

19:19:05 UTC ● OK 260ms

19:03:06 UTC ● OK 294ms

18:47:05 UTC ● OK 200ms

18:31:04 UTC ● OK 158ms

18:15:05 UTC ● OK 262ms

17:59:05 UTC ● OK 356ms

EMBED THIS BADGE

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

status

SQLGuard uptime on x402-list — live uptime

// HTML

<a href="https://x402-list.com/services/sqlguard?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/sqlguard.svg" alt="SQLGuard listed on x402-list" height="28">
</a>

// Markdown

[![SQLGuard on x402-list](https://x402-list.com/badge/sqlguard.svg)](https://x402-list.com/services/sqlguard?utm_source=badge&utm_medium=referral&utm_campaign=embed)

// HTML · live uptime variant

<a href="https://x402-list.com/services/sqlguard?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/sqlguard.svg?data=uptime" alt="SQLGuard 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.

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