Roundhouse AI

datastand.dev

Every model listed on the OpenRouter marketplace with per-MTok input/output pricing, cached-input rates where published, and context windows — several hundred rows, refreshed daily. Each build carries a `changes` block diffing it against the previous published build: models added, models the marketplace dropped (with their last known figures), and every price or context-window movement as from/to — so a daily buyer can see what actually moved instead of re-reading 400 unchanged rows. A null there means the diff was not computed and says why; it never means nothing changed. How much moved is on this free listing: `info.output.example.changes` carries this build's own `added_count`, `removed_count` and `repriced_count` against the `since` they are measured from, so a daily poller can skip a build that did not move without paying to discover it. Which models moved is what you are buying. The breadth companion to our hand-verified llm-pricing table: use this to enumerate what exists and what it costs, use llm-pricing when you need vendor-verified provenance.

SearchLiveeip155:8453Exactvia wellknown:datastand.dev
https://datastand.dev/api/data/llm-catalog
Calls · 30d
6↑ 71%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 31 snapshots so far.
$0.91
Verified settled volume
49 settlements proven x402 by their on-chain EIP-3009 marker.
$0.020
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
0x470a1b647d668d3820add26d70c8371557ff4c6b

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",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x470a1b647d668d3820add26d70c8371557ff4c6b",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://datastand.dev/api/data/llm-catalog",
      "description": "Every model on the OpenRouter marketplace with per-million-token input and output pricing, cached-input rates where published, and context windows: several hundred rows, rebuilt daily. Each build carries a changes block diffing it against the previous published build, listing models added, models the marketplace dropped with their last known figures, and every price or context-window movement as from/to. Spot repricing without re-reading 400 unchanged rows.",
      "maxAmountRequired": "20000",
      "maxTimeoutSeconds": 120
    }
  ],
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET"
        },
        "output": {
          "type": "json",
          "example": {
            "count": "integer",
            "items": [
              "..."
            ],
            "dataset": "llm-catalog",
            "generated_at": "ISO-8601"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "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.

0.02USDC≈ $0.02 USD
on Base · exact scheme

Pay 0.02 USDC on Base to 0x470a…f4c6b. The signed payment is good for 2 minutes.

Paid to
0x470a…f4c6b
USD Coin contract
0x8335…02913
Payment window
2 minutes
As published
20000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x470a1b647d668d3820add26d70c8371557ff4c6b",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET"
      },
      "output": {
        "type": "json",
        "example": {
          "count": 415,
          "items": [
            {
              "as_of": "2026-09-18",
              "model": "~anthropic/claude-fable-latest",
              "notes": "Price charged by the OpenRouter marketplace for this model, not the model vendor's own list price. Context window as reported by OpenRouter.",
              "source": "https://openrouter.ai/api/v1/models",
              "provider": "openrouter",
              "display_name": "Anthropic: Claude Fable Latest",
              "verification": "marketplace-listed",
              "input_per_mtok_usd": 10,
              "output_per_mtok_usd": 50,
              "context_window_tokens": 1000000,
              "cached_input_per_mtok_usd": 0.25
            }
          ],
          "changes": {
            "since": "2026-09-18T09:52:10.864Z",
            "baseline": "previous-build",
            "of_total": 415,
            "added_count": 0,
            "removed_count": 0,
            "repriced_count": 8,
            "details_omitted": [
              "added",
              "removed",
              "repriced"
            ],
            "details_omitted_reason": "The moved rows themselves, which are what this SKU is sold for. Every count above is a count of exactly these rows, so how much moved is free and what moved is the product."
          },
          "dataset": "llm-catalog",
          "generated_at": "2026-09-18T14:23:54.352Z"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET",
                "HEAD"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
—
Last indexed by Roundhouse
2026-09-19 03:15Z
Last enriched (probe, favicon, geo)
2026-09-19 03:45Z
x402 version
2
Max timeout
120s
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. 31 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 datastand.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=datastand.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://datastand.dev/api/data/llm-catalog, 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.