# ChainVerdict Pulse Bulk Quality Feed

> ChainVerdict Pulse Bulk Quality Feed is a paid API for AI agents from pulse.chainverdict.xyz, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-14).

Returns a bulk feed of all tracked x402 endpoints with quality scores, grades, availability, latency percentiles, pricing, uptime streaks, and freshness in a single pull.

## Facts

- Endpoint: GET https://pulse.chainverdict.xyz/v1/feed
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/chainverdict-pulse-bulk-quality-feed-0df00b9b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RCSaJCL4nruBuaWgdDec4

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 chainverdict-pulse-bulk-quality-feed-0df00b9b
```

Example prompt: Pull the full ChainVerdict Pulse bulk feed so I can see every tracked x402 endpoint with its current quality score, grade, availability, latency percentiles, price, and uptime streak all in one go.

## When to prefer this

Choose this endpoint when you need quality metrics for ALL tracked x402 endpoints in a single call rather than querying individual endpoints one at a time. Ideal for routers, aggregators, and dashboards that need a complete snapshot to make routing decisions, rank options, or populate a registry. Prefer over per-endpoint verdict calls when breadth matters more than real-time freshness for a specific target.

## Known failure modes

- Payment not received or invalid x402 payment header — returns 402 with offer details
- Upstream probe data temporarily unavailable — may return stale or partial feed
- Rate limiting if called too frequently from same origin
- Feed temporarily empty if no endpoints have been probed yet

## How this service works

Router-grade bulk quality feed: every tracked endpoint with score, grade, availability, latency percentiles, price, uptime streak and freshness in one pull. Designed for routers/aggregators to ingest.

## Output

A structured bulk payload containing every tracked x402 endpoint's quality score, letter grade, availability status, latency percentile metrics (e.g. p50/p95/p99), price, uptime streak length, and a freshness timestamp — all in a single response optimized for router and aggregator ingestion.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "properties": {
     "url": {
      "type": "string"
     },
     "grade": {
      "type": "string"
     },
     "score": {
      "type": "number"
     },
     "probes": {
      "type": "number"
     },
     "priceUsd": {
      "type": "number"
     },
     "streakDays": {
      "type": "number"
     },
     "lastProbeTs": {
      "type": "number"
     },
     "availability": {
      "type": "number"
     },
     "latencyP50Ms": {
      "type": "number"
     },
     "latencyP95Ms": {
      "type": "number"
     }
    }
   }
  },
  "count": {
   "type": "number"
  },
  "total": {
   "type": "number"
  },
  "schema": {
   "type": "string"
  },
  "generatedAt": {
   "type": "number"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/chainverdict-pulse-bulk-quality-feed-0df00b9b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pulse.chainverdict.xyz](https://www.zero.xyz/host/pulse.chainverdict.xyz/llms.txt)