# x402 Pump Chains Listing

> x402 Pump Chains Listing is a paid API for AI agents from workspace-x402-paywall.onrender.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-11).

Returns a list of blockchain chains supported for pump/multi-venue spread data, optionally filtered by name

## Facts

- Endpoint: GET https://workspace-x402-paywall.onrender.com/pump/chains?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-pump-chains-listing-7292a38a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FS0DxShwvt84HtSeGDVY1

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-pump-chains-listing-7292a38a
```

Example prompt: Show me all the blockchain chains available for pump/spread data on this x402 API — filter for anything matching 'solana' if you can.

## When to prefer this

Use this endpoint when you need to discover which blockchain networks are available before querying live spread or pump data on this x402 micro-API. It is the right starting point for any agent workflow that needs to validate chain support or enumerate available networks prior to making paid data calls.

## Known failure modes

- Payment not received — returns HTTP 402 requiring USDC payment via x402 on Base or Solana
- Invalid or malformed query parameter — may return empty results or error
- Service temporarily unavailable on Render free tier — cold start delays or downtime
- No chains match the filter string — empty result set returned

## How this service works

66 pay-per-call APIs: AI text/image generation ($0.01), Polymarket odds, crypto prices, DeFi yields, FX rates, weather, IP/geo, FBI wanted, SEC tickers, clinical trials, 250M academic papers, Stack Overflow, meme-coin launchpads (pump.fun, Clanker, Four.meme, SunPump), tokenized stocks, Solana top 100, and 40+ more. $0.005/call standard. USDC on Base and Solana via x402.

## Output

A JSON object containing blockchain chains supported by the pump/spread data service, with optional filtering by chain name. Typically includes chain identifiers and metadata useful for determining which networks are queryable for live SOL multi-venue spread data.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-pump-chains-listing-7292a38a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from workspace-x402-paywall.onrender.com](https://www.zero.xyz/host/workspace-x402-paywall.onrender.com/llms.txt)