# Canon – Fact-Check & Academic Research Summary

> Canon – Fact-Check & Academic Research Summary is a paid API for AI agents from vert.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Given a topic and language, returns a researched summary with fact-checking and academic paper references for that subject.

## Facts

- Endpoint: POST https://vert.orbonomy.xyz/api/summary
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/canon-fact-check-academic-research-summary-d10736c9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SnKdUVVK1fUM1I4CWM_kt

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-fact-check-academic-research-summary-d10736c9 -d '<json body>'
```

Example prompt: Can you look up what the academic literature says about the link between processed food and cognitive decline, and fact-check the common claim that it causes memory loss — give me the summary in English?

## When to prefer this

Choose this endpoint when an agent needs to verify factual claims or retrieve academic/research-backed summaries on a topic, especially when a lightweight per-call USDC micropayment model is acceptable. It is particularly useful when the agent needs both fact-checking and literature discovery in a single call rather than querying separate search or database APIs.

## Known failure modes

- Missing required 'topic' field returns a validation error
- Missing required 'lang' field causes a request failure
- Unrecognized or highly niche topic may return a low-confidence or empty summary
- Payment failure via x402/USDC results in a 402 Payment Required response
- Network timeout if the underlying research aggregation takes too long

## 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 a researched summary covering fact-checks and academic findings for the requested topic in the specified language.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "lang",
  "topic"
 ],
 "properties": {
  "lang": {
   "type": "string"
  },
  "topic": {
   "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-fact-check-academic-research-summary-d10736c9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from vert.orbonomy.xyz](https://www.zero.xyz/host/vert.orbonomy.xyz/llms.txt)