Roundhouse

Onchain Router

Text-to-speech generation · 24-hour encrypted capability URL · 0% service fee launch promotion

InferenceLiveeip155:8453Exactvia cdp
https://onchainrouter.dev/v1/audio/speech
AiAudioText-to-speechSpeech-generationElevenlabs
Calls · 30d
4→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 19 snapshots so far.
$0.28
Verified settled volume
32 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
Listed price
As published in the catalog. Always read the live 402 before paying.
4
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-06 09:49Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xA7660dea6AadCc87CbB5e79ccd262d391e61dE5d

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.

0.002045USDC≈ $0.002045 USD
on Base · exact scheme

Pay 0.002045 USDC on Base to 0xA766…1dE5d. The signed payment is good for 5 minutes.

Paid to
0xA766…1dE5d
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
2045 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xA7660dea6AadCc87CbB5e79ccd262d391e61dE5d",
    "amount": "2045",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "input": "Your text to speak.",
          "model": "elevenlabs/flash-v2.5",
          "speed": 1,
          "voice": "darian",
          "response_format": "mp3"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "id": "spch_example",
          "data": [
            {
              "url": "https://onchainrouter.dev/v1/media/audio/example?access=capability"
            }
          ],
          "model": "elevenlabs/flash-v2.5",
          "usage": {
            "input_characters": 19
          }
        }
      }
    },
    "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": {
              "required": [
                "model",
                "input"
              ],
              "properties": {
                "input": {
                  "type": "string",
                  "maxLength": 2000,
                  "minLength": 1
                },
                "model": {
                  "enum": [
                    "elevenlabs/flash-v2.5"
                  ],
                  "type": "string"
                },
                "speed": {
                  "type": "number",
                  "maximum": 1.2,
                  "minimum": 0.7,
                  "multipleOf": 0.001
                },
                "voice": {
                  "enum": [
                    "darian",
                    "talia",
                    "elara",
                    "baxter",
                    "eldrin",
                    "kellan",
                    "elowen",
                    "kaelen",
                    "lawrence",
                    "alicia",
                    "maisie",
                    "warren",
                    "jade",
                    "eddie",
                    "caleb",
                    "sawyer",
                    "finley",
                    "florence",
                    "wyatt",
                    "bella"
                  ],
                  "type": "string",
                  "description": "Optional public alias; omission uses the selected model's default voice."
                },
                "response_format": {
                  "enum": [
                    "mp3"
                  ],
                  "type": "string"
                }
              }
            },
            "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"
            }
          }
        }
      }
    }
  },
  "payment-identifier": {
    "info": {
      "required": false
    },
    "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
2026-09-06 09:49Z
Last indexed by Roundhouse
2026-09-24 02:00Z
Last enriched (probe, favicon, geo)
2026-09-12 23:45Z
x402 version
2
Max timeout
300s
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. 19 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 Onchain Router 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=Onchain%20Router'
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://onchainrouter.dev/v1/audio/speech, 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.