Roundhouse AI

research.memoryapi.org

Search 250M+ scholarly works via OpenAlex. Filter by keyword, topic, year, and sort by citations or recency.

SearchLiveeip155:8453Exactvia cdp
https://research.memoryapi.org/x402/research/openalex
Settlements · 30d
271↓ 19%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$6.21
Verified settled volume
1,654 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.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-06-21 04:49Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x24FAcafEB49b4e3FACF0B3e69604A2F4640c9bf2

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.

0.005USDC≈ $0.005 USD
on Base · exact scheme

Pay 0.005 USDC on Base to 0x24FA…c9bf2. The signed payment is good for 5 minutes.

Paid to
0x24FA…c9bf2
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
5000 smallest units
0.005USDC≈ $0.005 USD
on Base · upto scheme

Pay 0.005 USDC on Base to 0x24FA…c9bf2. The signed payment is good for 5 minutes.

Paid to
0x24FA…c9bf2
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": "0x24FAcafEB49b4e3FACF0B3e69604A2F4640c9bf2",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "facilitatorAddress": "0x93F6601151cCB08F333AB4B1CCcfb1e188c0bE44",
      "assetTransferMethod": "permit2"
    },
    "payTo": "0x24FAcafEB49b4e3FACF0B3e69604A2F4640c9bf2",
    "amount": "5000",
    "scheme": "upto",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "tags": [
        "research",
        "academic",
        "papers"
      ],
      "input": {
        "type": "http",
        "method": "GET",
        "schema": {
          "properties": {
            "q": {
              "type": "string",
              "description": "Keyword search query"
            },
            "sort": {
              "type": "string",
              "description": "Sort order: cited (default) or recent"
            },
            "limit": {
              "type": "string",
              "description": "Number of results (max 25, default 10)"
            },
            "topic": {
              "type": "string",
              "description": "Topic-based search (overrides q)"
            },
            "year_from": {
              "type": "string",
              "description": "Filter results from this year onwards"
            }
          }
        },
        "queryParams": {
          "q": "machine learning",
          "sort": "cited",
          "limit": "10"
        }
      },
      "output": {
        "example": {
          "count": 10,
          "query": "machine learning",
          "total": 4200000,
          "source": "OpenAlex (https://openalex.org)",
          "results": [
            {
              "id": "https://openalex.org/W2741809807",
              "year": 2017,
              "title": "Attention Is All You Need",
              "authors": [
                "Vaswani A"
              ],
              "journal": "Advances in Neural Information Processing Systems",
              "open_access": true,
              "cited_by_count": 80000
            }
          ],
          "success": true
        }
      },
      "iconUrl": "https://memoryapi.org/icon.png",
      "description": "Search OpenAlex's database of 250M+ scholarly works. Returns titles, authors, journals, DOIs, citation counts, and open-access status.",
      "serviceName": "MemoryAPI Research"
    },
    "schema": {
      "properties": {
        "input": {
          "required": [
            "method"
          ],
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-06-21 04:49Z
Last indexed by Roundhouse
2026-07-06 13:40Z
Last enriched (probe, favicon, geo)
2026-09-14 01:15Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 200
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 research.memoryapi.org 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=research.memoryapi.org'
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://research.memoryapi.org/x402/research/openalex, 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.