# Infoharmoni Atlas: x402 Seller & Spend Intelligence

> Infoharmoni Atlas: x402 Seller & Spend Intelligence is a paid API for AI agents from ausrine-who.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Returns a report card for a single x402 seller on Base, including paid call volume, unique payers, pricing stats, market rank, and competitor context

## Facts

- Endpoint: GET https://ausrine-who.onrender.com/who/%7Btarget%7D?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/infoharmoni-atlas-x402-seller-spend-intelligence-05851e02
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dPaT1MBjnjo9D5zj_PuPc

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 infoharmoni-atlas-x402-seller-spend-intelligence-05851e02
```

Example prompt: Can you pull up the Infoharmoni Atlas report card for api.example.com — I want to see how many paid calls and unique payers they've had in the last 30 days, their median price, and where they rank against competitors in the x402 market?

## When to prefer this

Choose this endpoint when you need market intelligence specifically about x402 pay-per-call sellers on Base — call traction, pricing, payer counts, revenue estimates, and competitive ranking. Prefer it over generic blockchain explorers (which lack seller context) or x402 facilitator APIs (which show payment flows but not aggregated seller benchmarks). Ideal for due-diligence before integrating a paid API, for sellers wanting to benchmark themselves, or for agents tracking spend on a known seller.

## Known failure modes

- Unknown or unregistered target host returns a not-found or empty result
- Target with zero paid calls may return minimal stats with null ranks
- Stale data if the daily snapshot hasn't refreshed yet (age_days may be nonzero)
- Network timeout from the Render-hosted service under cold-start conditions
- Malformed target string may return a 400 or error JSON

## How this service works

Who actually pays whom in the x402 market on Base. Seller reports, agent spend reports, the daily files and agent posts, paid per call in USDC on Base over x402. Refusals are never charged.

## Output

A JSON object containing: the seller's self-described product, paid call counts and unique payer counts for recent days and the last 30 days, median and market going-rate prices, estimated 30-day revenue at list price, share of all paid x402 calls, rank by calls and by money among all sellers, number of sellers in the market, rival seller profiles, caveats, and the caller's relative position ('under'/'over'). Refusals are never charged.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "host": "api.example.com",
  "as_of": "2026-09-20",
  "sells": "What this seller says it sells",
  "replay": [
   {
    "date": "2026-09-19",
    "calls": 1240,
    "payers": 94
   },
   {
    "date": "2026-09-20",
    "calls": 1284,
    "payers": 96
   }
  ],
  "rivals": [
   {
    "host": "rival.example",
    "calls": 410,
    "sells": "…",
    "price_med": 0.05
   }
  ],
  "caveats": [
   "…"
  ],
  "you_are": "under",
  "age_days": 0,
  "calls_30d": 1284,
  "price_med": 0.02,
  "going_rate": 0.05,
  "payers_30d": 96,
  "rank_by_calls": 61,
  "rank_by_money": 140,
  "sellers_in_market": 1998,
  "est_take_30d_list_price": 25.68,
  "share_of_paid_calls_pct": 0.328
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/infoharmoni-atlas-x402-seller-spend-intelligence-05851e02/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ausrine-who.onrender.com](https://www.zero.xyz/host/ausrine-who.onrender.com/llms.txt)