# ChronicaPulse Historical Event Research

> ChronicaPulse Historical Event Research is a paid API for AI agents from chronicapulse.theaslangroupllc.com, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-16).

Returns primary-source newspaper coverage of historical wars, disasters, social movements, and world events as they were reported at the time.

## Facts

- Endpoint: GET https://chronicapulse.theaslangroupllc.com/api/chronica/event
- Price: $0.08/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/chronicapulse-historical-event-research-7db5bb97
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Tk4WSAlmky2S4GggFw_pB

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 chronicapulse-historical-event-research-7db5bb97
```

Example prompt: Can you pull up how newspapers actually covered the 1918 Spanish flu pandemic — I want primary source reporting from that era, not modern summaries.

## When to prefer this

Use this endpoint when an agent needs authentic primary-source newspaper coverage of a specific historical event — wars, disasters, social movements, or world events — rather than modern secondary analysis. Best for historian agents, research agents, or academic workflows that require how events were contemporaneously reported rather than how they are described today.

## Known failure modes

- Event too recent or not yet historically archived — returns no results
- Event name too ambiguous — returns mixed or unrelated coverage
- Date range too narrow to capture meaningful coverage
- Unrecognized event identifier — returns empty result set
- Network timeout on large event queries

## How this service works

Historical event research for research and historian agents. Returns how newspapers covered wars, disasters, social movements, and world events as primary sources.

## Output

The agent receives historical newspaper articles and coverage showing how journalists and publications reported on the specified event at the time it occurred, including article excerpts, publication names, and dates — serving as primary source material for research.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "event"
 ],
 "properties": {
  "lang": {
   "type": "string",
   "description": "lang"
  },
  "event": {
   "type": "string",
   "description": "event"
  },
  "year_end": {
   "type": "string",
   "description": "year_end"
  },
  "year_start": {
   "type": "string",
   "description": "year_start"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/chronicapulse-historical-event-research-7db5bb97/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from chronicapulse.theaslangroupllc.com](https://www.zero.xyz/host/chronicapulse.theaslangroupllc.com/llms.txt)