# x402 Bazaar Rank – Gas-Tagged Services

> x402 Bazaar Rank – Gas-Tagged Services is a paid API for AI agents from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-21).

Returns a ranked list of x402 services tagged as 'gas'-related, scored by real 30-day call volume and unique paying-wallet counts, with a verifiable snapshot receipt.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-gas?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-bazaar-rank-gas-tagged-services-bb27768d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bn2ioeJmxeokTiFEYf106

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 x402-bazaar-rank-gas-tagged-services-bb27768d
```

Example prompt: Show me the top 25 gas-tagged services on the x402 bazaar ranked by number of paying wallets over the last 30 days, and include the snapshot hash so I can verify the results.

## When to prefer this

Use this endpoint when you specifically need to discover and rank x402-protocol services in the gas category by real on-chain usage signals (30-day calls and paying wallets) rather than self-reported metadata. Prefer this over generic API directories when you need a cryptographically receipted, tamper-evident ranking snapshot tied to a specific scoring revision.

## Known failure modes

- No services indexed for gas tag returns empty services array with count 0
- Stale snapshot if indexer hasn't refreshed recently — check generatedAt timestamp
- Payment failure (402) if USDC payment of $0.008 is not attached to the request
- Rate limiting if called too frequently without valid payment receipts
- Snapshot hash mismatch if scoring revision has changed between calls

## How this service works

Use when an agent needs the top x402 services tagged 'gas'. Returns Retired route /in-gas: now serves the live /in-x402 ranking, the top 25 x402 services tagged 'x402' by 30-day unique paying wallets.

## Output

A JSON object containing: total matched services count, the query parameters used (by, op, limit, tag), a list of up to 25 ranked services each with name, network (EIP-155 chain ID), 30-day call count, USD price, resource URL, and 30-day unique payer count, plus a declaredBy field, generatedAt timestamp, and a snapshot hash for receipt verification.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "generatedAt",
  "data"
 ],
 "properties": {
  "data": {
   "type": "string"
  },
  "generatedAt": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-bazaar-rank-gas-tagged-services-bb27768d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev](https://www.zero.xyz/host/x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/llms.txt)