market2000.xyz

Name: market2000.xyz
Price: 0.01 USDC
Availability: InStock

arXiv Paper Search — find academic papers by keyword with optional category filter. HOW TO CALL: POST /search_arxiv?query=diffusion+model+finance&category=q-fin.ST&max_results=10 PARAMETERS: query — free-text search (required) category — arXiv category code (e.g. 'cs.AI', 'q-fin.ST', 'quant-ph') OR group alias: ai | finance | crypto | bio | physics | econ max_results — 1–50 (default 10) sort_by — 'submittedDate' (default) | 'relevance' | 'lastUpdatedDate' RESPONSE FIELDS (per paper): id, title, abstract (truncated to 600 chars), authors, published, updated, primary_category, categories, pdf_url, url Cached 12 hours per (query, category). PRICING: $0.02 per call.

SearchLiveeip155:8453Exactvia facilitator:payAI

https://market2000.xyz/search_arxiv

Settlements · 30d

39↓ 100%

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.

$1.83

Verified settled volume

39 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

0x7a9Fa18dd9402F8d8C55Afbd59ED707BAc0e9cAf

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": "0x7a9Fa18dd9402F8d8C55Afbd59ED707BAc0e9cAf",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://market2000.xyz/search_arxiv",
      "description": "arXiv Paper Search — find academic papers by keyword with optional category filter.\n\nHOW TO CALL:\n  POST /search_arxiv?query=diffusion+model+finance&category=q-fin.ST&max_results=10\n\nPARAMETERS:\n  query       — free-text search (required)\n  category    — arXiv category code (e.g. 'cs.AI', 'q-fin.ST', 'quant-ph')\n                OR group alias: ai | finance | crypto | bio | physics | econ\n  max_res",
      "maxAmountRequired": "10000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7a9Fa18dd9402F8d8C55Afbd59ED707BAc0e9cAf",
      "scheme": "exact",
      "network": "eip155:42161",
      "mimeType": "application/json",
      "resource": "https://market2000.xyz/search_arxiv",
      "description": "arXiv Paper Search — find academic papers by keyword with optional category filter.\n\nHOW TO CALL:\n  POST /search_arxiv?query=diffusion+model+finance&category=q-fin.ST&max_results=10\n\nPARAMETERS:\n  query       — free-text search (required)\n  category    — arXiv category code (e.g. 'cs.AI', 'q-fin.ST', 'quant-ph')\n                OR group alias: ai | finance | crypto | bio | physics | econ\n  max_res",
      "maxAmountRequired": "10000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
      },
      "payTo": "n2eV6XN2j1dR9bB7ReQHGjZVbWSknp4LA9XttCRYUC8",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "mimeType": "application/json",
      "resource": "https://market2000.xyz/search_arxiv",
      "description": "arXiv Paper Search — find academic papers by keyword with optional category filter.\n\nHOW TO CALL:\n  POST /search_arxiv?query=diffusion+model+finance&category=q-fin.ST&max_results=10\n\nPARAMETERS:\n  query       — free-text search (required)\n  category    — arXiv category code (e.g. 'cs.AI', 'q-fin.ST', 'quant-ph')\n                OR group alias: ai | finance | crypto | bio | physics | econ\n  max_res",
      "maxAmountRequired": "10000",
      "maxTimeoutSeconds": 300
    }
  ],
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "query": "transformer attention mechanism",
            "category": "cs.AI",
            "max_results": 5
          }
        },
        "output": {
          "type": "json",
          "example": {
            "count": 5,
            "query": "transformer attention mechanism",
            "cached": false,
            "papers": [
              {
                "id": "2406.01234",
                "url": "https://arxiv.org/abs/2406.01234",
                "title": "Attention Is All You Need (revisited)",
                "authors": [
                  "Author A",
                  "Author B"
                ],
                "pdf_url": "https://arxiv.org/pdf/2406.01234v1",
                "updated": "2026-06-01",
                "abstract": "We propose a novel...",
                "published": "2026-06-01",
                "categories": [
                  "cs.AI",
                  "cs.LG"
                ],
                "primary_category": "cs.AI"
              }
            ],
            "sort_by": "submittedDate",
            "category": "cs.AI",
            "fetched_at": "2026-06-07T10:00:00Z"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "queryParams"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "query"
                ],
                "properties": {
                  "query": {
                    "type": "string",
                    "description": "Free-text search terms (e.g. 'diffusion model finance')"
                  },
                  "sort_by": {
                    "enum": [
                      "submittedDate",
                      "relevance",
                      "lastUpdatedDate"
                    ],
                    "type": "string",
                    "description": "Sort order (default: submittedDate)"
                  },
                  "category": {
                    "type": "string",
                    "description": "arXiv category code (e.g. 'cs.AI', 'q-fin.ST') or group alias: ai | finance | crypto | bio | physics | econ"
                  },
                  "max_results": {
                    "type": "integer",
                    "description": "Number of papers to return, 1–50 (default 10)"
                  }
                }
              }
            }
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "query",
                  "count",
                  "papers"
                ],
                "properties": {
                  "count": {
                    "type": "integer"
                  },
                  "query": {
                    "type": "string"
                  },
                  "cached": {
                    "type": "boolean"
                  },
                  "papers": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "properties": {
                        "id": {
                          "type": "string"
                        },
                        "url": {
                          "type": "string"
                        },
                        "title": {
                          "type": "string"
                        },
                        "authors": {
                          "type": "array",
                          "items": {
                            "type": "string"
                          }
                        },
                        "pdf_url": {
                          "type": [
                            "string",
                            "null"
                          ]
                        },
                        "updated": {
                          "type": "string"
                        },
                        "abstract": {
                          "type": "string"
                        },
                        "published": {
                          "type": "string"
                        },
                        "categories": {
                          "type": "array",
                          "items": {
                            "type": "string"
                          }
                        },
                        "primary_category": {
                          "type": "string"
                        }
                      }
                    }
                  },
                  "sort_by": {
                    "type": "string"
                  },
                  "category": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "fetched_at": {
                    "type": "string"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "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 0x7a9F…e9cAf. The signed payment is good for 5 minutes.

Paid to: 0x7a9F…e9cAf
USD Coin contract: 0x8335…02913
Payment window: 5 minutes
As published: 10000 smallest units

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x7a9Fa18dd9402F8d8C55Afbd59ED707BAc0e9cAf",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Provenance

Seen in the source catalog: 2026-08-29 13:04Z
Last indexed by Roundhouse: 2026-09-24 01:15Z
Last enriched (probe, favicon, geo): 2026-09-14 22:16Z
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

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. 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 market2000.xyz 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=market2000.xyz'
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://market2000.xyz/search_arxiv, 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.