Roundhouse

x721.dev

Provides paid HTTP GET access to the project's roadmap, returning a title and an array of roadmap items.

OtherLiveeip155:8453Exactvia facilitator:dexter
https://x721.dev/roadmap
Calls · 30d
2↑ 40%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far.
$41,329.10
Verified settled volume
1,378 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
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
0x70DA5f2A851FB936eFF8207f2733b0914cC44B7D

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": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x70DA5f2A851FB936eFF8207f2733b0914cC44B7D",
      "scheme": "exact",
      "network": "base",
      "mimeType": "",
      "resource": "https://x721.dev/roadmap",
      "description": "View the roadmap",
      "outputSchema": {
        "input": {
          "type": "http",
          "method": "GET"
        },
        "output": {
          "items": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "title": {
            "type": "string"
          }
        }
      },
      "maxAmountRequired": "10000",
      "maxTimeoutSeconds": 60
    }
  ],
  "x402Version": 1
}

Accepts

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

0.01USDC≈ $0.01 USD
on Base · exact scheme

Pay 0.01 USDC on Base to 0x70DA…44B7D. The signed payment is good for 1 minute.

Paid to
0x70DA…44B7D
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
10000 smallest units
Buys
View the roadmap
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x70DA5f2A851FB936eFF8207f2733b0914cC44B7D",
    "scheme": "exact",
    "network": "base",
    "mimeType": "",
    "resource": "https://x721.dev/roadmap",
    "description": "View the roadmap",
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "GET"
      },
      "output": {
        "items": {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        "title": {
          "type": "string"
        }
      }
    },
    "maxAmountRequired": "10000",
    "maxTimeoutSeconds": 60
  }
]

Provenance

Seen in the source catalog
2026-09-23 20:13Z
Last indexed by Roundhouse
2026-09-24 09:15Z
Last enriched (probe, favicon, geo)
2026-09-16 12:15Z
x402 version
2
Max timeout
60s
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

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 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 x721.dev 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=x721.dev'
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://x721.dev/roadmap, 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.