# Canon – Fact-Checking & Academic Research (Events Endpoint)

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

Verifies claims and searches academic or factual content related to a given topic and date, returning structured results for AI agents.

## Facts

- Endpoint: POST https://veri.orbonomy.xyz/api/events
- 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-fact-checking-academic-research-events-endpoint-fee580db
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TKSpUPHAQgo1Jyz2GAuJN

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-checking-academic-research-events-endpoint-fee580db -d '<json body>'
```

Example prompt: Can you fact-check the claim that mRNA vaccines were first approved for human use in 2020? Search Canon for topic 'mRNA vaccine approval' with date '2020-12-11' and tell me what the academic record says.

## When to prefer this

Choose this endpoint when an AI agent needs to verify a factual claim or find academic/research support for a topic tied to a specific date. Ideal for tasks requiring citation-backed fact-checking rather than general web search or LLM-generated answers.

## Known failure modes

- Missing required fields 'date' or 'topic' causes 400 bad request
- Payment not included or insufficient USDC causes 402 Payment Required
- Topic too vague or unsupported results in no meaningful research results returned
- Invalid date format may cause parsing errors
- 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

Returns a JSON object with a success boolean and (implicitly) verified factual or academic research results related to the submitted topic and date, indicating whether the lookup completed successfully.

## 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-fact-checking-academic-research-events-endpoint-fee580db/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from veri.orbonomy.xyz](https://www.zero.xyz/host/veri.orbonomy.xyz/llms.txt)