Roundhouse AI

FreshContext

Pay-per-call x402 service: verify whether a symbol is publicly exported by an exact npm package version, with artifact evidence. $0.003/call, no account. HTTP + MCP.

SearchLiveeip155:8453Exactvia cdp
https://401-chi.vercel.app/api/v1/symbol
NpmTypescriptApi-verificationPackage-exportsCode-generation
Activity
—
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record.
$0.02
Verified settled volume
5 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0030
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-07-12 10:16Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x4C7128ECE22D35eDBf342c7feaEc336080a88227

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.

0.003USDC≈ $0.003 USD
on Base · exact scheme

Pay 0.003 USDC on Base to 0x4C71…88227. The signed payment is good for 5 minutes.

Paid to
0x4C71…88227
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
3000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x4C7128ECE22D35eDBf342c7feaEc336080a88227",
    "amount": "3000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "symbol": "z",
          "package": "zod",
          "version": "4.0.0",
          "ecosystem": "npm"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "pathParams": {}
      },
      "output": {
        "type": "json",
        "example": {
          "query": {
            "symbol": "z",
            "package": "zod",
            "ecosystem": "npm",
            "requestedVersion": "4.0.0"
          },
          "result": {
            "exists": true,
            "certainty": "verified",
            "exportKind": "named"
          },
          "evidence": [
            {
              "locator": "export { ... z ... }",
              "sourcePath": "index.d.cts",
              "sourceType": "typescript-declaration",
              "packageVersion": "4.0.0"
            }
          ],
          "resolution": {
            "package": "zod",
            "version": "4.0.0",
            "versionResolution": "exact"
          },
          "retrievedAt": "2026-07-11T21:34:45.134Z",
          "schemaVersion": "1"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "$schema": "https://json-schema.org/draft/2020-12/schema",
              "required": [
                "ecosystem",
                "package",
                "version",
                "symbol"
              ],
              "properties": {
                "symbol": {
                  "type": "string",
                  "pattern": "^[A-Za-z_$][A-Za-z0-9_$]*$",
                  "maxLength": 512,
                  "minLength": 1
                },
                "package": {
                  "type": "string",
                  "pattern": "^(?:@[a-z0-9][a-z0-9._-]*\\/)?[a-z0-9][a-z0-9._-]*$",
                  "maxLength": 214,
                  "minLength": 1
                },
                "version": {
                  "type": "string",
                  "pattern": "^v?\\d+\\.\\d+\\.\\d+(?:-[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?(?:\\+[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?$",
                  "maxLength": 100,
                  "minLength": 1
                },
                "ecosystem": {
                  "type": "string",
                  "const": "npm"
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "pathParams": {
              "type": "object"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "$schema": "https://json-schema.org/draft/2020-12/schema",
              "required": [
                "schemaVersion",
                "query",
                "resolution",
                "result",
                "evidence",
                "retrievedAt"
              ],
              "properties": {
                "query": {
                  "type": "object",
                  "required": [
                    "ecosystem",
                    "package",
                    "requestedVersion",
                    "symbol"
                  ],
                  "properties": {
                    "symbol": {
                      "type": "string"
                    },
                    "package": {
                      "type": "string"
                    },
                    "ecosystem": {
                      "type": "string",
                      "const": "npm"
                    },
                    "requestedVersion": {
                      "type": "string"
                    }
                  },
                  "additionalProperties": false
                },
                "result": {
                  "type": "object",
                  "required": [
                    "exists",
                    "exportKind",
                    "certainty"
                  ],
                  "properties": {
                    "exists": {
                      "type": "boolean"
                    },
                    "certainty": {
                      "enum": [
                        "verified",
                        "inconclusive"
                      ],
                      "type": "string"
                    },
                    "exportKind": {
                      "anyOf": [
                        {
                          "enum": [
                            "named",
                            "default",
                            "namespace",
                            "type",
                            "unknown"
                          ],
                          "type": "string"
                        },
                        {
                          "type": "null"
                        }
                      ]
                    }
                  },
                  "additionalProperties": false
                },
                "evidence": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "sourceType",
                      "sourcePath",
                      "locator",
                      "packageVersion"
                    ],
                    "properties": {
                      "locator": {
                        "type": "string"
                      },
                      "sourcePath": {
                        "type": "string"
                      },
                      "sourceType": {
                        "enum": [
                          "typescript-declaration",
                          "package-json"
                        ],
                        "type": "string"
                      },
                      "packageVersion": {
                        "type": "string"
                      }
                    },
                    "additionalProperties": false
                  }
                },
                "resolution": {
                  "type": "object",
                  "required": [
                    "package",
                    "version",
                    "versionResolution"
                  ],
                  "properties": {
                    "package": {
                      "type": "string"
                    },
                    "version": {
                      "type": "string"
                    },
                    "versionResolution": {
                      "type": "string",
                      "const": "exact"
                    }
                  },
                  "additionalProperties": false
                },
                "retrievedAt": {
                  "type": "string",
                  "format": "date-time",
                  "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z))$"
                },
                "schemaVersion": {
                  "type": "string",
                  "const": "1"
                }
              },
              "additionalProperties": false
            }
          }
        }
      }
    },
    "routeTemplate": ":var1"
  },
  "payment-identifier": {
    "info": {
      "required": true
    },
    "schema": {
      "type": "object",
      "$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
2026-07-12 10:16Z
Last indexed by Roundhouse
2026-08-04 03:20Z
Last enriched (probe, favicon, geo)
2026-09-20 23:15Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 405
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

Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record. 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 FreshContext 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=FreshContext'
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://401-chi.vercel.app/api/v1/symbol, 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.