paper-lookup-production-56b0.up.railway.app
Scholarly works metadata from Crossref (150M+ records): resolve a DOI, or search by keywords, author or title with year and type filters. Returns title, authors with ORCID, journal or publisher, publication date, type, ISSN/ISBN, citation count, references count, licence and full-text links, funders. Abstracts are excluded. Use when an agent must verify a citation or DOI, find papers on a topic, or get a paper's authors, journal, date, citation count and links.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
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.
Pay 0.005 USDC on Base to 0x922D…045B8. The signed payment is good for 5 minutes.
- Paid to
- 0x922D…045B8
- 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": "0x922DAc4235B819F3C6778fB206333440b5A045B8",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"query": "microplastics drinking water"
}
},
"output": {
"type": "json",
"example": {
"legal": {
"terms": "https://paper-lookup-production-56b0.up.railway.app/terms",
"privacy": "https://paper-lookup-production-56b0.up.railway.app/privacy"
},
"total": 28674,
"status": "ok",
"results": [
{
"doi": "10.1016/j.watres.2018.05.060",
"url": "https://doi.org/10.1016/j.watres.2018.05.060",
"type": "journal-article",
"title": "Microplastics in drinking water ...",
"authors": [
{
"name": "A. Author",
"orcid": null
}
],
"cited_by": 512,
"container": "Water Research",
"published": "2018-09-01"
}
],
"use_when": "Use when an agent must verify a citation or DOI, find papers on a topic, or get a paper's authors, journal, date, citation count and links."
}
}
},
"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"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"doi": {
"type": "string",
"description": "DOI to resolve, e.g. 10.1038/nature12373"
},
"type": {
"type": "string",
"description": "Crossref type, e.g. journal-article, book-chapter, posted-content"
},
"limit": {
"type": "integer",
"description": "Results 1-20 (default 10)"
},
"query": {
"type": "string",
"description": "Keywords (title, abstract words, topics)"
},
"author": {
"type": "string",
"description": "Author name filter"
},
"from_year": {
"type": "integer",
"description": "Earliest publication year"
},
"until_year": {
"type": "integer",
"description": "Latest publication year"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-16 17:05Z
- Last indexed by Roundhouse
- 2026-10-17 19:40Z
- Last enriched (probe, favicon, geo)
- 2026-10-16 19:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
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.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service paper-lookup-production-56b0.up.railway.app 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=paper-lookup-production-56b0.up.railway.app' 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://paper-lookup-production-56b0.up.railway.app/v1/papers/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.