Lumen Agent Utilities

Name: Lumen Agent Utilities
Price: 0.001 USDC
Availability: InStock

Search arXiv preprints: id, title, abstract, authors, categories, dates, PDF link. Supports arXiv field prefixes (ti:, au:, cat:). {query, limit<=50, sort:relevance|date}.

SearchLiveeip155:8453Exactvia cdp

https://lumenworks-x402-decoder.onrender.com/v1/arxiv/search

ArxivPapersResearchScienceAcademic

Calls · 30d

1→ 0%

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far.

$0.03

Verified settled volume

17 settlements proven x402 by their on-chain EIP-3009 marker.

$0.0010

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

Last called 2026-10-11 02:37Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0xee9790cB3960952F585379F831a89b4e00B4029A

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.

0.001USDC≈ $0.001 USD

on Base · exact scheme

Pay 0.001 USDC on Base to 0xee97…4029A. The signed payment is good for 2 minutes.

Paid to: 0xee97…4029A
USD Coin contract: 0x8335…02913
Payment window: 2 minutes
As published: 1000 smallest units

1000units

on eip155:42220 · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to: 0xee97…4029A
Token contract: 0xD2ab…7F771
Payment window: 2 minutes

1000units

on eip155:42220 · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to: 0xee97…4029A
Token contract: 0xcebA…2118C
Payment window: 2 minutes

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xee9790cB3960952F585379F831a89b4e00B4029A",
    "amount": "1000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  },
  {
    "asset": "0xD2ab3C9A02DBBAB236BfEC45D1d755DF4267F771",
    "extra": {
      "name": "Tether America USD",
      "version": "1",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0xee9790cB3960952F585379F831a89b4e00B4029A",
    "amount": "1000",
    "scheme": "exact",
    "network": "eip155:42220",
    "maxTimeoutSeconds": 120
  },
  {
    "asset": "0xcebA9300f2b948710d2653dD7B07f33A8B32118C",
    "extra": {
      "name": "USDC",
      "version": "2",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0xee9790cB3960952F585379F831a89b4e00B4029A",
    "amount": "1000",
    "scheme": "exact",
    "network": "eip155:42220",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "limit": 2,
          "query": "LLM agents tool use"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "query": "LLM agents tool use",
          "total": 1585251,
          "source": "arXiv API",
          "results": [
            {
              "id": "2111.01762v1",
              "pdf": "https://arxiv.org/pdf/2111.01762v1",
              "url": "http://arxiv.org/abs/2111.01762v1",
              "title": "AIRCC-Clim: a user-friendly tool for generating regional probabilistic climate change scenarios and risk measures",
              "authors": [
                "Francisco Estrada",
                "Oscar Calderón-Bustamante",
                "Wouter Botzen"
              ],
              "summary": "Complex physical models are the most advanced tools available for producing realistic simulations of the climate system. However, such levels of realism imply high computational cost and restrictions on their use for policymaking and risk assessment. Two central characteristics of climate change are uncertainty and that it is a dynamic problem in which international actions can significantly alter…",
              "updated": "2021-10-30T11:09:03Z",
              "published": "2021-10-30T11:09:03Z",
              "categories": [
                "physics.ao-ph",
                "econ.GN",
                "stat.AP"
              ]
            },
            {
              "id": "2605.18805v1",
              "pdf": "https://arxiv.org/pdf/2605.18805v1",
              "url": "http://arxiv.org/abs/2605.18805v1",
              "title": "RecoAtlas: From Semantic Plausibility to Set-Level Utility in LLM Recommendation Agents",
              "authors": [
                "Imad Aouali",
                "Flavian Vasile",
                "Otmane Sakhi"
              ],
              "summary": "LLM recommendation agents increasingly produce structured recommendation reports: sets of items accompanied by natural-language justifications. Yet existing evaluations often reduce this setting to reranking small shortlisted candidate sets or judge reports mainly by semantic plausibility. We introduce Recommendation Atlas (Agentic Tool-Level Assessment for Shopping), or RecoAtlas, a benchmark and…",
              "updated": "2026-05-11T18:55:32Z",
              "published": "2026-05-11T18:55:32Z",
              "categories": [
                "cs.IR",
                "cs.AI",
                "cs.LG"
              ]
            }
          ]
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "required": [
                "query"
              ],
              "properties": {
                "sort": {
                  "enum": [
                    "relevance",
                    "date"
                  ],
                  "type": "string"
                },
                "limit": {
                  "type": "number"
                },
                "query": {
                  "type": "string"
                }
              }
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  },
  "builder-code": {
    "info": {
      "a": "celo_9c8960fd085e"
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "a": {
          "type": "string",
          "pattern": "^[a-z0-9_]{1,32}$",
          "description": "App builder code"
        },
        "s": {
          "type": "array",
          "items": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$"
          },
          "description": "Service builder codes"
        },
        "w": {
          "type": "string",
          "pattern": "^[a-z0-9_]{1,32}$",
          "description": "Wallet builder code"
        }
      },
      "additionalProperties": false
    }
  }
}

Provenance

Seen in the source catalog: 2026-10-11 02:37Z
Last indexed by Roundhouse: 2026-10-12 01:21Z
Last enriched (probe, favicon, geo): 2026-10-11 03:46Z
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. 3 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 Lumen Agent Utilities 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=Lumen%20Agent%20Utilities'
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://lumenworks-x402-decoder.onrender.com/v1/arxiv/search, 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. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.