# Canon Academic & Fact-Check Search

> Canon Academic & Fact-Check Search is a paid API for AI agents from canon.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Searches academic papers, journals, and fact-checked sources to verify claims or retrieve research results

## Facts

- Endpoint: POST https://canon.orbonomy.xyz/api/search
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/canon-academic-fact-check-search-600b6b29
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_m1oJo2p__Xp5yMmN0NcA8

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-fact-check-search-600b6b29 -d '<json body>'
```

Example prompt: Search Canon for up to 10 peer-reviewed papers or fact-checked sources on 'mRNA vaccine efficacy against Omicron variant' so I can verify the claims in this article.

## When to prefer this

Use Canon when an AI agent needs to verify factual claims, find academic citations, or search peer-reviewed literature as part of a research or fact-checking workflow. Prefer this over generic web search when authoritative, citable academic sources are required. Best suited for tasks where evidence quality matters — scientific claims, policy assertions, medical statistics — and where USDC micropayment-per-query cost is acceptable.

## Known failure modes

- Missing required 'query' field returns a validation error
- Missing required 'limit' field returns a validation error
- Query returns zero results if no matching papers or sources are found
- Payment failure (insufficient USDC balance) returns 402 Payment Required
- Overly broad or ambiguous queries may return low-relevance results
- Rate limiting or quota exceeded may return 429 Too Many Requests

## 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 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-fact-check-search-600b6b29/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from canon.orbonomy.xyz](https://www.zero.xyz/host/canon.orbonomy.xyz/llms.txt)