# Canon Academic Search & Fact-Checking

> Canon Academic Search & Fact-Checking is a paid API for AI agents from v0-canon.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Searches academic papers and journals to verify claims and retrieve research results for AI agents, paid per-query in USDC on Base.

## Facts

- Endpoint: POST https://v0-canon.orbonomy.xyz/api/search
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/canon-academic-search-fact-checking-8b39df9a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_U8c5ldmsTq21elpy8u0hS

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 canon-academic-search-fact-checking-8b39df9a -d '<json body>'
```

Example prompt: Can you fact-check the claim that 'regular exercise reduces the risk of Alzheimer's disease' by searching Canon for academic papers on the topic — give me up to 5 results?

## When to prefer this

Choose this endpoint when an AI agent needs to verify factual claims, find supporting academic literature, or search peer-reviewed journals — especially when payment via USDC on Base (x402) is already set up. Prefer over general web search when structured academic sourcing and fact-checking rigor are required.

## Known failure modes

- Payment failure — insufficient USDC balance on Base causes a 402 response and no results
- Invalid or missing 'query' field returns a 400-level validation error
- Limit parameter too large or out of range may cause an error or be clamped
- Query returns zero results if no matching academic content is indexed
- Network timeout if the upstream academic index is slow to respond

## How this service works

Fact-checking and academic research for AI agents. Verify claims, search papers, explore journals. USDC on Base.

## Output

A JSON object with a 'success' boolean and (presumably) a list of matching academic papers, journal entries, or fact-check results relevant to the submitted query, up to the specified limit.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "limit",
  "query"
 ],
 "properties": {
  "limit": {
   "type": "integer"
  },
  "query": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/canon-academic-search-fact-checking-8b39df9a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from v0-canon.orbonomy.xyz](https://www.zero.xyz/host/v0-canon.orbonomy.xyz/llms.txt)