Roundhouse AI

vrsai

Choose the lowest-cost or highest-value feasible allocation, assignment, selection, or resource mix from caller-supplied options, capacities, budgets, and eligibility rules, with independently verified feasibility evidence and solver optimality/gap information.

OtherLiveeip155:8453Exactvia cdp
https://api.vrsai.tech/v1/capabilities/decision_optimization/versions/1.0.0/execute
Decision-optimizationResource-allocationAssignment-optimizationConstrained-selectionProduction-mix
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.
$0.030
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.

0.03USDC≈ $0.03 USD
on Base · exact scheme

Pay 0.03 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
30000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "vrsai": {
        "capabilityId": "decision_optimization",
        "capabilityVersion": "1.0.0",
        "requestFingerprint": "v1:30a0856fdc8cddad063d454fb70b7ff68de77809ab7440a52780194007ff7e9f",
        "commercialTermsDigest": "v1:556fab09d0fd23e8252bd022a750f925804083dfd737ea067ded85ef4790d83a",
        "commercialTermsRevision": "decision-optimization-r2"
      },
      "version": "2"
    },
    "payTo": "0x6746dFF7bDB1ED4940DBe50024795AD97CbA09Af",
    "amount": "30000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "lanes": [
            {
              "demand_id": "warehouse_1",
              "source_id": "supplier_a",
              "unit_cost": "2"
            },
            {
              "demand_id": "warehouse_1",
              "source_id": "supplier_b",
              "unit_cost": "5"
            }
          ],
          "demands": [
            {
              "id": "warehouse_1",
              "requirement": "80",
              "satisfaction": "exact"
            }
          ],
          "sources": [
            {
              "id": "supplier_a",
              "capacity": "100"
            },
            {
              "id": "supplier_b",
              "capacity": "100"
            }
          ],
          "objective": "minimize_total_cost",
          "problem_type": "allocation"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "status": "OPTIMAL",
          "quality": {
            "best_bound": "160",
            "absolute_gap": "0",
            "relative_gap": "0",
            "solver_optimality": "optimal_within_profile_tolerance",
            "solution_uniqueness": "unknown",
            "semantic_feasibility_verified": true
          },
          "decision": {
            "lanes": [
              {
                "quantity": "80",
                "demand_id": "warehouse_1",
                "source_id": "supplier_a"
              },
              {
                "quantity": "0",
                "demand_id": "warehouse_1",
                "source_id": "supplier_b"
              }
            ],
            "problem_type": "allocation",
            "source_activations": [
              {
                "active": true,
                "source_id": "supplier_a"
              },
              {
                "active": false,
                "source_id": "supplier_b"
              }
            ]
          },
          "evidence": {
            "solver": "highs",
            "solver_version": "1.15.2",
            "ruleset_version": "decision_optimization_r1",
            "input_fingerprint": "v1:23bf4e29934aad481275e4bf38cb45617bbbe664ad3dd5d771af2fe3d4d1c938",
            "model_fingerprint": "v1:392d8ab317c91b7339a92c2b9fa4b2b30f326f2175955d6fa362c4b57287c5a5",
            "constraints_checked": 3,
            "constraints_violated": 0,
            "decision_fingerprint": "v1:43b9ac81c64b8f95e46837a5103ac13d8f27ad829b32ee06463079bf0be83b81"
          },
          "economics": {
            "sense": "minimize",
            "objective": "minimize_total_cost",
            "objective_value": "160"
          },
          "diagnostics": {
            "binding_constraints": []
          },
          "problem_type": "allocation",
          "machine_action": "CONSUME_OPTIMAL_DECISION"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object"
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  },
  "offer-receipt": {
    "info": {
      "offers": [
        {
          "format": "jws",
          "signature": "eyJhbGciOiJFUzI1NiIsImtpZCI6ImRpZDp3ZWI6dnJzYWkudGVjaCNwcm9kdWN0aW9uLTIwMjYtMDgtMTkifQ.eyJhbW91bnQiOiIzMDAwMCIsImFzc2V0IjoiMHg4MzM1ODlmQ0Q2ZURiNkUwOGY0YzdDMzJENGY3MWI1NGJkQTAyOTEzIiwibmV0d29yayI6ImVpcDE1NTo4NDUzIiwicGF5VG8iOiIweDY3NDZkRkY3YkRCMUVENDk0MERCZTUwMDI0Nzk1QUQ5N0NiQTA5QWYiLCJyZXNvdXJjZVVybCI6Imh0dHBzOi8vYXBpLnZyc2FpLnRlY2gvdjEvY2FwYWJpbGl0aWVzL2RlY2lzaW9uX29wdGltaXphdGlvbi92ZXJzaW9ucy8xLjAuMC9leGVjdXRlIiwic2NoZW1lIjoiZXhhY3QiLCJ2YWxpZFVudGlsIjoxNzg3NTI4NjAyLCJ2ZXJzaW9uIjoxfQ.VeTeNrnq7Wjj7HLd8ouksAJvK5Zods1JgBvyzFACgoCFUY5OY3GYjIUFL1sNF29Hii0lJtg2yI828iSMl6rvbw",
          "acceptIndex": 0
        }
      ]
    },
    "schema": {
      "type": "object",
      "$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)
2026-09-24 11:15Z
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/decision_optimization/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.