# x402-toolbox Academic Paper Search

> x402-toolbox Academic Paper Search is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).

Search academic papers and research literature by query, returning relevant scholarly results, paid per-call via USDC over x402.

## Facts

- Endpoint: GET https://x402-toolbox.shablony-pro.workers.dev/research/academic-paper-search?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-toolbox-academic-paper-search-934944c2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZU326HZ_n_1gfY1BwRORt

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 x402-toolbox-academic-paper-search-934944c2
```

Example prompt: Search for academic papers on transformer attention mechanisms in natural language processing and give me a list of relevant results.

## When to prefer this

Choose this endpoint when you need on-demand, pay-per-call academic paper search without any API key or account signup — ideal for AI agents that need occasional scholarly lookups and want to pay frictionlessly with USDC. Prefer this over subscription-based academic APIs when you have sporadic, unpredictable usage patterns or want to avoid credential management.

## Known failure modes

- Payment not received or insufficient USDC balance — returns 402 Payment Required
- Invalid or missing schema parameter — returns 400 Bad Request
- No papers found for the query — returns empty results array
- Upstream academic data source unavailable — returns 503 or error flag
- Rate limiting or network timeout from the Cloudflare Worker

## How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

## Output

Returns a JSON object with ok and paid status flags, along with a list of academic papers matching the search query, including metadata such as titles, authors, abstracts, and publication details.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "schema": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-toolbox-academic-paper-search-934944c2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-toolbox.shablony-pro.workers.dev](https://www.zero.xyz/host/x402-toolbox.shablony-pro.workers.dev/llms.txt)