# AgentCheck Market Snapshot

> AgentCheck Market Snapshot is a paid API for AI agents from agentcheck-kohl.vercel.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-10).

Returns a dated JSON snapshot of the x402 agent-payments market, including Bazaar listings, seller counts, 30-day paid call volume, market concentration, and registry health metrics.

## Facts

- Endpoint: GET https://agentcheck-kohl.vercel.app/snapshot?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentcheck-market-snapshot-b59ce560
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hBj07p2oL4ioJIIQuUcHl

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 agentcheck-market-snapshot-b59ce560
```

Example prompt: Pull me the latest AgentCheck market snapshot so I can see how many listings and sellers are active on the x402 Bazaar, what the 30-day paid call volume looks like, and whether most sellers actually have real buyers.

## When to prefer this

Choose this endpoint when you need a high-level, pre-computed market health summary of the x402 agent-payments ecosystem without querying raw Bazaar or registry data yourself. Prefer it for dashboards, competitive analysis, or due-diligence checks on the x402 marketplace as a whole. Use the sibling CSV endpoint instead if you need per-seller granularity.

## Known failure modes

- Snapshot data may be stale if AgentCheck's measurement pipeline has not run recently
- HTTP 402 if payment header is missing or malformed (x402 paywall)
- Service unavailable if Vercel deployment is down
- Incomplete metrics if upstream data sources (Bazaar, x402scan) are unreachable during measurement

## How this service works

Agent-payments market snapshot, measured by us: x402 Bazaar listings, sellers, 30-day paid calls, concentration, how many sellers have real buyers, registry dead rates, wallet shelf sizes. Dated JSON.

## Output

A dated JSON object (as_of field with ISO date) containing x402 Bazaar metrics: total origins, listing count, 30-day paid call volume across all listings, market concentration measure, ratio of sellers with real buyers, registry dead rates, and wallet shelf size distribution.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "as_of": "2026-10-03",
  "bazaar": {
   "origins": 2046,
   "listings": 24770,
   "calls_30d_all_listings": 770340
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentcheck-market-snapshot-b59ce560/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentcheck-kohl.vercel.app](https://www.zero.xyz/host/agentcheck-kohl.vercel.app/llms.txt)