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agenttoll.dev Academic Citations Lookup
x402
agenttoll.dev Academic Citations Lookup is a paid API for AI agents from agenttoll.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).
Retrieves forward or backward citation relationships for an academic paper by its ID or DOI
Price / call$0.03
Success—
StatusUnknown
How this service works
108+ receipt-backed x402 work products for AI agents. Clear prices, spend caps, buyer metadata, and structured results over Base USDC.
Output
Returns a structured object containing citation relationships for the specified paper — either papers that cite it (forward) or papers it cites (backward), typically including paper IDs, titles, authors, publication years, and DOIs of the related works.
Example use cases
Literature review citation mapping
“I'm writing a lit review on transformer models. Can you pull the backward citations for the paper with ID 204e3073870fae3d05bcbc2f6a8e263d9b72e776 so I can see what foundational works it builds on?”
Research impact assessment
“I need to find all the papers that have cited DOI 10.1038/s41586-021-03819-2 — pull the forward citations so I can assess how much impact this Nature paper has had.”
Citation network exploration for OSINT
“Can you get both the forward and backward citations for paper ID 649def34f8be52c8b66281af98ae884c09aef38d? I want to understand the full citation neighborhood around this paper.”
Technical details
Endpoint
POSThttps://agenttoll.dev/paid/academic/citationsWhen to prefer
Choose this endpoint when you need to programmatically traverse academic citation graphs — either to find who cites a known paper (forward) or what a paper cites (backward) — and you want pay-per-call pricing in USDC without a subscription. Ideal for AI agents doing automated literature reviews, impact analysis, or citation network research where Semantic Scholar's free API rate limits are a concern.
Side effects
- Invalid or unrecognized paper ID or DOI returns an error or empty result
- Direction parameter typo (e.g. 'forwards' instead of 'forward') may return an error
- Paywalled or very obscure papers may have incomplete citation data
- Rate limiting or payment failure (USDC balance insufficient) blocks the call
- Very new papers may have zero forward citations indexed yet
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| paperId | string | string paper ID or DOI |
| direction | string | optional: forward or backward |
Output
Schema · Response
{
"type": "object"
}Tags
x402
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