# Anokha Web Tools - Academic Paper Search

> Anokha Web Tools - Academic Paper Search is a paid API for AI agents from tools.anokha.space, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).

Search academic papers by keyword query, returning titles, abstracts, DOIs, citation counts, and publication years

## Facts

- Endpoint: GET https://tools.anokha.space/v1/papers?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/anokha-web-tools-academic-paper-search-d328d97b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Tv02rvAVGC45cNiiLZqKt

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability anokha-web-tools-academic-paper-search-d328d97b
```

Example prompt: Search for academic papers on transformer architectures in NLP, sorted by citation count, limit to 10 results from 2020 onwards.

## When to prefer this

Choose this endpoint when an AI agent needs to search academic literature programmatically without an API key, paying per call via USDC on Base. It is well-suited for agents performing automated literature reviews, citation discovery, or research enrichment pipelines. Prefer this over Google Scholar scraping or OpenAlex direct calls when you need a simple pay-per-use model with structured JSON responses including abstracts and citation data.

## Known failure modes

- Missing required 'q' query parameter returns a validation error
- Invalid sort enum value (not 'relevance', 'cited', or 'recent') causes a 400 error
- Payment failure or insufficient USDC balance returns HTTP 402
- Very broad queries may return large total_matches but limited results per call
- No results found for highly specific or obscure queries returns empty results array

## How this service works

Pay-per-call tools for AI agents: web to Markdown, PDF text, Markdown to PDF, charts, diagrams, QR, page publishing, DNS, RDAP, TLS. x402, USDC on Base, no API key.

## Output

A JSON object containing the original query string, a list of paper results (each with DOI URL, publication year, title, abstract, and cited_by count), and a total_matches integer indicating how many papers matched the query in total.

## Request schema (JSON Schema)

```json
{
 "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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string"
      },
      "sort": {
       "enum": [
        "relevance",
        "cited",
        "recent"
       ],
       "type": "string"
      },
      "limit": {
       "type": "integer"
      },
      "from_year": {
       "type": "integer"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "query": "...",
  "results": [
   {
    "doi": "https://doi.org/...",
    "year": 2024,
    "title": "...",
    "abstract": "...",
    "cited_by": 120
   }
  ],
  "total_matches": 1200
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/anokha-web-tools-academic-paper-search-d328d97b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tools.anokha.space](https://www.zero.xyz/host/tools.anokha.space/llms.txt)