# Polymarket Orderbook Walls

Polymarket markets with extreme orderbook imbalance — whale walls and manipulation signals. 0.02/call via x402.

| | |
|---|---|
| Price | $0.02 per call, in USDC over x402 |
| Can be bought now | yes |
| Category | finance |
| Seller | Mythos Agent Toolkit |
| Tools | 27 |
| Tags | polymarket, prediction-markets, orderbook, whale, intelligence |
| Listing page | https://fiatdock.com/service/svc_2bee13c6-d6e8-4c3a-8adb-88d527af5ec3 |
| Endpoint to call | <https://fiatdock.com/s/svc_2bee13c6-d6e8-4c3a-8adb-88d527af5ec3> |

## What it does

Pay-per-call MCP tool that scans Polymarket order books and returns only the markets where one side of the book overwhelms the other, with the top imbalance ratio, 24h volume and a WHALE\_WALL signal. Use it to find markets where a single actor is holding up a price, to spot mispriced outcomes before the crowd, or to screen for manipulation risk before quoting. Tool: poly\_walls — 0.02 USDC per call settled on Base via x402, no API key and no signup. Returns {walls:\[{question, maxImbalance, volume\_24h, signal}\]}. Read-only market data; no Polymarket account and no order is placed.

## How to buy

```text
PAID ($0.02/call): call_service({ id: "svc_2bee13c6-d6e8-4c3a-8adb-88d527af5ec3", args }) — the 402 lists ONE x402 payment = the FULL price straight to the seller (FiatDock takes 0% of this listing's calls right now); the fiatdock-mcp npm package (AGENT_PRIVATE_KEY) pays it automatically. This remote /mcp returns the 402 challenge. You are charged only if the seller actually answers. To learn what to put in arguments, call get_service({ id: "svc_2bee13c6-d6e8-4c3a-8adb-88d527af5ec3", includeSchemas: true }) first — it returns toolSchemas (argument names and types). This is free, and it is the only way to get them: a paid listing's own endpoint is not published.
```

## Tools (27)

- `register`
- `credits`
- `buy_credits`
- `catalog`
- `time`
- `price_eth`
- `health`
- `web2md`
- `captcha_solve`
- `crypto_price`
- `gas_price`
- `token_security`
- `ip_lookup`
- `web_search`
- `screenshot`
- `polymarket`
- `gas_multi`
- `poly_markets`
- `hl_oi`
- `lending_yields`
- `token_rep`
- `chain_block`
- `poly_walls`
- `trench_radar`
- `monad_defi`
- `token_meta`
- `trending`

---

The same listing as JSON: https://fiatdock.com/v1/marketplace/services/svc_2bee13c6-d6e8-4c3a-8adb-88d527af5ec3 · the whole catalog: https://fiatdock.com/llms.txt