# Canon – Events Fact-Check & Academic Research

> Canon – Events Fact-Check & Academic Research is a paid API for AI agents from v0-canon.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-19).

Retrieve fact-checked information and academic research about events on a given date and topic, for AI agents to verify claims and explore scholarly sources.

## Facts

- Endpoint: POST https://v0-canon.orbonomy.xyz/api/events?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/canon-events-fact-check-academic-research-9b304be6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JQdphDl6cduvEFipEc4jd

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-events-fact-check-academic-research-9b304be6 -d '<json body>'
```

Example prompt: Use Canon to fact-check what major events happened around climate policy on 2023-11-01 and pull any relevant academic research on the topic.

## When to prefer this

Choose this endpoint when an AI agent needs to verify a claim tied to a specific date and topic, search for academic or scholarly backing for a statement, or fact-check event-based assertions. Prefer it over general web search when structured, USDC-priced, agent-native fact-checking with academic sourcing is needed.

## Known failure modes

- Missing required 'date' field returns validation error
- Missing required 'topic' field returns validation error
- Invalid date format may cause parsing failure
- Payment not sent or insufficient USDC results in 402 Payment Required
- Topic too vague or broad may return low-confidence or empty results
- Service unavailability returns 5xx error

## How this service works

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

## Output

A response object with a success boolean indicating whether the lookup completed, along with fact-checked event information and academic research results related to the submitted date and topic.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "date",
  "topic"
 ],
 "properties": {
  "date": {
   "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-events-fact-check-academic-research-9b304be6/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)