api.cortexcloud.org

OpenAI-compatible AI and data API for agents. Pay per call in USDC on Base via x402 — no API keys, no subscriptions, no lock-in.

MediaLiveeip155:8453Exactvia cdp

https://api.cortexcloud.org/x402/v1/audio/transcriptions

Activity

—

Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record.

$0.31

Verified settled volume

56 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.

—

Calls · 30d

Upstream's own call count for this endpoint, not ours.

—

Unique payers · 30d

Last called 2026-08-02 14:24Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x311760952bd4f26b08f9d868f07bc52a16c63d62

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.

{
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x311760952bd4f26b08f9d868f07bc52a16c63d62",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://api.cortexcloud.org/x402/v1/audio/transcriptions",
    "mimeType": "application/json",
    "description": "AI speech-to-text (Groq Whisper) - pay per call in USDC."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "mime": "audio/wav",
            "audio_b64": "<base64>"
          },
          "type": "http",
          "method": "GET",
          "bodyType": "json"
        },
        "output": {
          "type": "object",
          "format": "application/json",
          "example": {}
        }
      },
      "schema": {
        "properties": {
          "input": {
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "audio_b64"
                ],
                "properties": {
                  "mime": {
                    "type": "string"
                  },
                  "model": {
                    "type": "string"
                  },
                  "audio_b64": {
                    "type": "string"
                  }
                }
              }
            }
          },
          "output": {
            "properties": {
              "example": {}
            }
          }
        }
      }
    }
  },
  "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.

0.003USDC≈ $0.003 USD

on Base · exact scheme

Pay 0.003 USDC on Base to 0x3117…63d62. The signed payment is good for 1 minute.

Paid to: 0x3117…63d62
USD Coin contract: 0x8335…02913
Payment window: 1 minute
As published: 3000 smallest units

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x311760952bd4f26b08f9d868f07bc52a16c63d62",
    "amount": "3000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "mime": "audio/wav",
          "audio_b64": "<base64>"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "object",
        "format": "application/json",
        "example": {}
      }
    },
    "schema": {
      "properties": {
        "input": {
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "audio_b64"
              ],
              "properties": {
                "mime": {
                  "type": "string"
                },
                "model": {
                  "type": "string"
                },
                "audio_b64": {
                  "type": "string"
                }
              }
            }
          }
        },
        "output": {
          "properties": {
            "example": {}
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog: 2026-08-02 14:28Z
Last indexed by Roundhouse: 2026-08-02 18:00Z
Last enriched (probe, favicon, geo): 2026-08-28 00:45Z
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

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 api.cortexcloud.org 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=api.cortexcloud.org'
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.cortexcloud.org/x402/v1/audio/transcriptions, 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://app.roundhouseai.io/dashboard/team.

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