Roundhouse AI

WithZero

Create media, research companies and people, publish to the web, remember context, deploy apps, and schedule work-on demand, without vendor accounts or API keys.

SearchLiveeip155:8453Uptovia cdp
https://agents.withzero.xyz/api/v1/audio/speech/gemini-3.1-flash-tts
MediaResearchPublishingAutomationMemory
Calls · 30d
1↓ 46%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 20 snapshots so far.
—
Verified settled volume
0 settlements proven x402 by their on-chain EIP-3009 marker.
$0.160
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-13 19:04Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x4a7e38e5b2a9325e996a5a155ebdb2dd4181d974

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.

0.16USDC≈ $0.16 USD
on Base · upto scheme

Pay 0.16 USDC on Base to 0x4a7e…1d974. The signed payment is good for 30 minutes.

Paid to
0x4a7e…1d974
USD Coin contract
0x8335…02913
Payment window
30 minutes
As published
160000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "billing": {
        "model": "reserve-and-pay-actual",
        "description": "amount is a ceiling, NOT the charge. Your wallet reserves up to this much, then you are debited only your actual usage after the work runs; the reserved remainder never leaves your wallet, and a failed delivery debits nothing."
      },
      "version": "2",
      "zeroclick": {
        "kind": "transaction",
        "zcRequestId": "zcreq__Qag1FsvqDKs3_bInRSQY",
        "agentPaymentId": "apay_7Xo0-Xd8yY6Q3_2FC4YP-"
      },
      "facilitatorAddress": "0x4c934c63C786157Fefd990945b25eA60a0FB0205"
    },
    "payTo": "0x4a7e38e5b2a9325e996a5a155ebdb2dd4181d974",
    "amount": "160000",
    "scheme": "upto",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 1800
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "input": "Hello from WithZero — this is a text to speech sample."
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "properties": {}
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        }
      }
    }
  },
  "zeroclick": {
    "info": {
      "payment": {
        "id": "apay_7Xo0-Xd8yY6Q3_2FC4YP-",
        "amountUsd": "0.160000"
      },
      "service": "gemini-3-1-flash-tts",
      "requestId": "zcreq__Qag1FsvqDKs3_bInRSQY"
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "payment"
      ],
      "properties": {
        "agentId": {
          "type": "string"
        },
        "payment": {
          "type": "object",
          "required": [
            "id",
            "amountUsd"
          ],
          "properties": {
            "id": {
              "type": "string"
            },
            "amountUsd": {
              "type": "string"
            }
          }
        },
        "service": {
          "type": "string"
        },
        "requestId": {
          "type": "string"
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-08-13 19:04Z
Last indexed by Roundhouse
2026-09-12 18:50Z
Last enriched (probe, favicon, geo)
2026-09-21 15:15Z
x402 version
2
Max timeout
1800s
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. 20 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 WithZero 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=WithZero'
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://agents.withzero.xyz/api/v1/audio/speech/gemini-3.1-flash-tts, 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.