Roundhouse

gpt55.558686.xyz

GPT-5.6 Luna API Base USDC and OpenAI-compatible x402 chat: one request for $0.00293, paid by browser wallet or a quote-first agent fallback.

InferenceLiveeip155:8453Exactvia facilitator:payAI
https://gpt55.558686.xyz/v1/tools/case-convert
Settlements · 30d
67↓ 56%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$49.81
Verified settled volume
A floor: summed over 5,000 of 8,197 verified settlements.
$0.0001
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
0x1f0130669ca6fd02e025a984cc038f139df19a2f

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.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "x402Provider": "xpay"
      },
      "payTo": "0x1f0130669ca6fd02e025a984cc038f139df19a2f",
      "amount": "2000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://gpt55.558686.xyz/v1/tools/case-convert",
    "tags": [
      "case-convert",
      "camel-case",
      "snake-case",
      "kebab-case",
      "developer-tool"
    ],
    "iconUrl": "https://gpt55.558686.xyz/favicon.ico",
    "category": "developer-tool",
    "mimeType": "application/json",
    "description": "Convert text to upper, lower, title, sentence, camel, snake, or kebab case without calling an upstream model. GET variant for agents, crawlers, and wallets that prefer query parameters over a JSON body. Pay up to $0.002 per request with x402 USDC on Base.",
    "serviceName": "gpt55-token-gateway"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "case": "title",
            "text": "hello x402 world"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "case": "title",
            "tool": "caseConvert",
            "output": "Hello X402 World",
            "fetchedAt": "2026-06-10T00:00:00.000Z"
          }
        }
      },
      "schema": {
        "type": "object",
        "$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",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "pathParams": {
                "type": "object",
                "additionalProperties": true
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "text"
                ],
                "properties": {
                  "case": {
                    "enum": [
                      "upper",
                      "lower",
                      "title",
                      "sentence",
                      "camel",
                      "snake",
                      "kebab"
                    ],
                    "type": "string"
                  },
                  "text": {
                    "type": "string",
                    "maxLength": 20000,
                    "minLength": 1
                  }
                },
                "additionalProperties": false
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "ok": {
                    "type": "boolean"
                  },
                  "tool": {
                    "type": "string"
                  },
                  "fetchedAt": {
                    "type": "string"
                  }
                },
                "additionalProperties": true
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Accepts

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

0.0001USDC≈ $0.0001 USD
on Base · exact scheme

Pay 0.0001 USDC on Base to 0x1f01…19a2f. The signed payment is good for 5 minutes.

Paid to
0x1f01…19a2f
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
100 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x1f0130669ca6fd02e025a984cc038f139df19a2f",
    "amount": "100",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Provenance

Seen in the source catalog
2026-07-08 16:21Z
Last indexed by Roundhouse
2026-09-24 03:15Z
Last enriched (probe, favicon, geo)
2026-09-18 14:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 402
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 gpt55.558686.xyz 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=gpt55.558686.xyz'
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://gpt55.558686.xyz/v1/tools/case-convert, 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.