Roundhouse

cabrini.ai

List every US stock ticker that traded on a given date (7,000-16,000+ symbols). $0.005 USDC.

TradingLiveeip155:8453Exactvia facilitator:payAI
https://cabrini.ai/v1/tickers
Activity
—
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record.
$2.08
Verified settled volume
56 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
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
0xb40867B72334463eE9bF5D2bD933eab5FB4ab8e0

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",
  "price": "$0.005 USDC",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xb40867B72334463eE9bF5D2bD933eab5FB4ab8e0",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "http://origin.cabrini.ai/v1/tickers",
      "description": "List all tickers for a date. $0.005 USDC.",
      "maxAmountRequired": "5000",
      "maxTimeoutSeconds": 300
    }
  ],
  "message": "Payment required. Lists all tickers trading on a given date. Usage: GET /v1/tickers?date=YYYY-MM-DD",
  "x402Version": 1,
  "payment_info": {
    "how": "Sign the USDC transfer from the PAYMENT-REQUIRED header and retry with an X-PAYMENT header. `pip install cabrini` does this for you.",
    "asset": "USDC",
    "amount": "$0.005",
    "network": "Base (eip155:8453)",
    "protocol": "x402 v2",
    "receiver": "0xb40867B72334463eE9bF5D2bD933eab5FB4ab8e0"
  }
}

Accepts

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

0.005USDC≈ $0.005 USD
on Base · exact scheme

Pay 0.005 USDC on Base to 0xb408…ab8e0. The signed payment is good for 5 minutes.

Paid to
0xb408…ab8e0
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
5000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xb40867B72334463eE9bF5D2bD933eab5FB4ab8e0",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Provenance

Seen in the source catalog
2026-08-01 06:51Z
Last indexed by Roundhouse
2026-09-24 02:15Z
Last enriched (probe, favicon, geo)
2026-09-15 16:15Z
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

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 cabrini.ai 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=cabrini.ai'
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://cabrini.ai/v1/tickers, 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.