Roundhouse AI

vrsai

Check PostgreSQL SQL immediately before execution to prevent destructive or unsafe database changes by AI agents and automated systems.

MediaLiveeip155:8453Exactvia cdp
https://api.vrsai.tech/v1/capabilities/sql_preflight/versions/1.0.0/execute
SqlPostgresqlPreflightSql-guardrailDestructive-sql
Calls · 30d
2→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far.
$3.41
Verified settled volume
34 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-23 23:42Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x6746dFF7bDB1ED4940DBe50024795AD97CbA09Af

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.05USDC≈ $0.05 USD
on Base · exact scheme

Pay 0.05 USDC on Base to 0x6746…A09Af. The signed payment is good for 1 minute.

Paid to
0x6746…A09Af
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
50000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "vrsai": {
        "capabilityId": "sql_preflight",
        "capabilityVersion": "1.0.0",
        "requestFingerprint": "v1:7f79b9dd858d1efea4f54ad0004965e924f3530b300ddad2f54c82676ed5da0f",
        "commercialTermsDigest": "v1:32c4139e0ddcff728339a74323207236e38e4d87f3585d4cabe2cfefabf27621",
        "commercialTermsRevision": "sql-preflight-r2"
      },
      "version": "2"
    },
    "payTo": "0x6746dFF7bDB1ED4940DBe50024795AD97CbA09Af",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "sql": "DELETE FROM customers;",
          "context": {
            "environment": "production",
            "protected_relations": [
              "customers"
            ]
          }
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "checks": [
            {
              "id": "parse_validity",
              "status": "PASS"
            },
            {
              "id": "statement_count",
              "status": "PASS",
              "evidence": {
                "count": 1
              }
            },
            {
              "id": "unbounded_delete",
              "status": "BLOCK",
              "reason_code": "DELETE_WITHOUT_WHERE",
              "statement_index": 0
            },
            {
              "id": "protected_relation_mutation",
              "status": "BLOCK",
              "evidence": {
                "relations": [
                  {
                    "name": "customers"
                  }
                ]
              },
              "reason_code": "PROTECTED_RELATION_MUTATION",
              "statement_index": 0
            },
            {
              "id": "expected_statement_kind",
              "status": "PASS",
              "statement_index": 0
            }
          ],
          "coverage": {
            "dialect": "postgresql",
            "assessment_scope": [
              "unbounded_delete",
              "unbounded_update",
              "truncate",
              "destructive_drop",
              "destructive_cascade",
              "alter_table_hazards",
              "nonconcurrent_index",
              "create_extension",
              "protected_relation_mutation",
              "dynamic_or_procedural_sql",
              "expected_statement_kind",
              "multi_statement_evaluation"
            ],
            "checks_performed": [
              "unbounded_delete",
              "unbounded_update",
              "truncate",
              "destructive_drop",
              "destructive_cascade",
              "alter_table_hazards",
              "nonconcurrent_index",
              "create_extension",
              "protected_relation_mutation",
              "dynamic_or_procedural_sql",
              "expected_statement_kind",
              "multi_statement_evaluation"
            ],
            "checks_not_performed": [
              "privilege_change",
              "explicit_locking",
              "alter_system",
              "availability_maintenance",
              "external_program_execution",
              "drop_schema_or_database",
              "read_cost_and_row_estimation",
              "sensitive_data_access_and_exfiltration",
              "tenant_isolation",
              "semantic_correctness"
            ],
            "complete_for_declared_scope": true
          },
          "decision": "BLOCK",
          "statements": [
            {
              "kind": "DELETE",
              "index": 0,
              "decision": "BLOCK",
              "relations": [
                {
                  "name": "customers"
                }
              ],
              "mutates_data": true,
              "reason_codes": [
                "DELETE_WITHOUT_WHERE",
                "PROTECTED_RELATION_MUTATION"
              ],
              "administrative": false,
              "changes_schema": false,
              "changes_privileges": false
            }
          ],
          "reason_codes": [
            "DELETE_WITHOUT_WHERE",
            "PROTECTED_RELATION_MUTATION"
          ],
          "machine_action": "DO_NOT_EXECUTE",
          "ruleset_version": "1.0.0",
          "statement_count": 1,
          "input_fingerprint": "v1:4634deedb0970b042098df09e6f8bf365f2ddb635a18742c5ffa676844e4fa62"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object"
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  },
  "offer-receipt": {
    "info": {
      "offers": [
        {
          "format": "jws",
          "signature": "eyJhbGciOiJFUzI1NiIsImtpZCI6ImRpZDp3ZWI6dnJzYWkudGVjaCNwcm9kdWN0aW9uLTIwMjYtMDgtMTkifQ.eyJhbW91bnQiOiI1MDAwMCIsImFzc2V0IjoiMHg4MzM1ODlmQ0Q2ZURiNkUwOGY0YzdDMzJENGY3MWI1NGJkQTAyOTEzIiwibmV0d29yayI6ImVpcDE1NTo4NDUzIiwicGF5VG8iOiIweDY3NDZkRkY3YkRCMUVENDk0MERCZTUwMDI0Nzk1QUQ5N0NiQTA5QWYiLCJyZXNvdXJjZVVybCI6Imh0dHBzOi8vYXBpLnZyc2FpLnRlY2gvdjEvY2FwYWJpbGl0aWVzL3NxbF9wcmVmbGlnaHQvdmVyc2lvbnMvMS4wLjAvZXhlY3V0ZSIsInNjaGVtZSI6ImV4YWN0IiwidmFsaWRVbnRpbCI6MTc4NzUyODU5OCwidmVyc2lvbiI6MX0.4dIvhKjkvMV0mXAo4xlpMDzpqc3EYiTyL3_87Adw4kbndgmvWBwOKggdOb6MszuRE-a2-7bwLqmG06Qk9-9Zkg",
          "acceptIndex": 0
        }
      ]
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "offers"
      ],
      "properties": {
        "offers": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "format",
              "signature"
            ],
            "properties": {
              "format": {
                "type": "string"
              },
              "payload": {
                "type": "object",
                "required": [
                  "version",
                  "resourceUrl",
                  "scheme",
                  "network",
                  "asset",
                  "payTo",
                  "amount"
                ],
                "properties": {
                  "asset": {
                    "type": "string"
                  },
                  "payTo": {
                    "type": "string"
                  },
                  "amount": {
                    "type": "string"
                  },
                  "scheme": {
                    "type": "string"
                  },
                  "network": {
                    "type": "string"
                  },
                  "version": {
                    "type": "integer"
                  },
                  "validUntil": {
                    "type": "integer"
                  },
                  "resourceUrl": {
                    "type": "string"
                  }
                }
              },
              "signature": {
                "type": "string"
              },
              "acceptIndex": {
                "type": "integer"
              }
            }
          }
        }
      }
    }
  },
  "payment-identifier": {
    "info": {
      "required": true
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "required"
      ],
      "properties": {
        "id": {
          "type": "string",
          "pattern": "^[a-zA-Z0-9_-]+$",
          "maxLength": 128,
          "minLength": 16
        },
        "required": {
          "type": "boolean"
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-08-23 23:42Z
Last indexed by Roundhouse
2026-08-27 06:40Z
Last enriched (probe, favicon, geo)
2026-09-23 21:15Z
x402 version
2
Max timeout
60s
Liveness probe
HTTP 404
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service vrsai and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=vrsai'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://api.vrsai.tech/v1/capabilities/sql_preflight/versions/1.0.0/execute, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.