# PulseFeed Trust History

> PulseFeed Trust History is a paid API for AI agents from pulsefeed.dev, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-14).

Returns the full historical trust record for a specific x402 endpoint: uptime percentage, chronological payTo (receiver) change log, and price-change history over time.

## Facts

- Endpoint: POST https://pulsefeed.dev/trust/history
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pulsefeed-trust-history-435ad931
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OjaK_V5eTATbcaQtY_IoR

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 pulsefeed-trust-history-435ad931 -d '<json body>'
```

Example prompt: Can you pull up the full trust history for https://api.example.com/data — I want to see its uptime record, every time the payment receiver changed, and how the price has shifted over time?

## When to prefer this

Use this endpoint when you need the longitudinal trust record of a specific x402 endpoint — especially the payTo change history — rather than just a current trust snapshot. It is the right choice when detecting past hijacks, performing due diligence before repeated payments, or auditing an endpoint's behavioral history over time. Prefer this over a current-status endpoint when historical continuity and tamper-evidence matter.

## Known failure modes

- Unknown or unmonitored endpoint URL returns empty history or 404
- Malformed endpoint URL parameter returns an error
- Endpoint with no recorded history returns minimal data
- Network or service unavailability returns a timeout or 5xx error

## How this service works

Has this x402 endpoint been trustworthy over time? Track record of one endpoint from continuous independent monitoring: uptime %, the dated chronology of every payTo (receiver) change — the signal that catches hijacks — plus price-change history and trend. Compounding data that cannot be reconstructed after the fact: a snapshot tells you what an endpoint is, this tells you what it has been. ?endpoint=url

## Output

Returns a structured record including: historical uptime percentage, a dated chronology of every payTo (payment receiver) address change (critical for detecting hijacks), and a history of price changes with trend data — all accumulated over continuous independent monitoring of the specified endpoint.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pulsefeed-trust-history-435ad931/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pulsefeed.dev](https://www.zero.xyz/host/pulsefeed.dev/llms.txt)