Roundhouse

FastX402 Lab

Checks compatibility between two open source licenses (MIT, GPL, Apache, BSD, etc.) and returns obligations and restrictions. Uses SPDX identifiers to determine if licenses can be combined in a project.

Otheroffline · HTTP 500eip155:8453Exactvia facilitator:payAI
https://fastx402.tools/spdx-license-compat
Dev
Settlements · 30d
230↓ 100%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$0.40
Verified settled volume
230 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0010
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xFe6Ae9ec9DE12817f23958F11b6CE69194b6Bd7E

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.

0.001USDC≈ $0.001 USD
on Base · exact scheme

Pay 0.001 USDC on Base to 0xFe6A…6Bd7E. The signed payment is good for 5 minutes.

Paid to
0xFe6A…6Bd7E
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
1000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xFe6Ae9ec9DE12817f23958F11b6CE69194b6Bd7E",
    "amount": "1000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "license1": "MIT",
          "license2": "GPL-3.0"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "license1": {
            "id": "MIT",
            "name": "MIT License"
          },
          "license2": {
            "id": "GPL-3.0",
            "name": "GNU General Public License v3.0"
          },
          "direction": "one-way",
          "compatible": true,
          "explanation": "MIT License can be combined with GNU General Public License v3.0. The combined work must be distributed under GNU General Public License v3.0.",
          "obligations": [
            "Provide attribution for MIT components",
            "Distribute combined work under GPL-3.0",
            "Disclose source code of combined work",
            "Include GPL-3.0 license text",
            "State changes made to GPL-3.0 components"
          ],
          "restrictions": [
            "Cannot sublicense under different terms",
            "Must provide patent grant as required by GPL-3.0"
          ]
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "license1",
                "license2"
              ],
              "properties": {
                "license1": {
                  "type": "string",
                  "description": "First SPDX license identifier (e.g., MIT, Apache-2.0, GPL-3.0)"
                },
                "license2": {
                  "type": "string",
                  "description": "Second SPDX license identifier to check compatibility with"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "properties": {
                "license1": {
                  "type": "object",
                  "properties": {
                    "id": {
                      "type": "string"
                    },
                    "name": {
                      "type": "string"
                    }
                  }
                },
                "license2": {
                  "type": "object",
                  "properties": {
                    "id": {
                      "type": "string"
                    },
                    "name": {
                      "type": "string"
                    }
                  }
                },
                "direction": {
                  "type": "string"
                },
                "compatible": {
                  "type": "boolean"
                },
                "explanation": {
                  "type": "string"
                },
                "obligations": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  }
                },
                "restrictions": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-18 11:49Z
Last indexed by Roundhouse
2026-10-26 13:46Z
Last enriched (probe, favicon, geo)
2026-10-18 19:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 500
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

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. 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 FastX402 Lab 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=FastX402%20Lab'
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://fastx402.tools/spdx-license-compat, 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. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

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