# Polymarket Market Intel & Execution Microstructure Snapshot

> Polymarket Market Intel & Execution Microstructure Snapshot is a paid API for AI agents from x402.botsmith.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-16).

Returns a deep snapshot of a single Polymarket prediction market by slug, including implied probability, bid/ask/spread, 24h volume, liquidity depth, momentum, and estimated slippage for $100 and $1000 buy orders.

## Facts

- Endpoint: GET https://x402.botsmith.dev/polymarket/market
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polymarket-market-intel-execution-microstructure-snapshot-691617e7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Er0FIaoZbzNECvxWlqwG1

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 polymarket-market-intel-execution-microstructure-snapshot-691617e7
```

Example prompt: Pull the full market intel snapshot for the Polymarket market 'will-the-fed-cut-rates-in-march' — I need the implied probability, best bid/ask spread, 24h volume, liquidity depth, and how much slippage I'd face buying $100 and $1000 worth of shares.

## When to prefer this

Use this endpoint when you need detailed execution microstructure — slippage estimates, order book depth, spread — for a specific Polymarket market identified by slug, rather than just headline probability. Prefer this over generic market-listing endpoints when you already know the market slug and need actionable trading or analysis signals for a single market.

## Known failure modes

- Invalid or misspelled slug returns an error or empty result
- Market no longer active or resolved may return stale or missing data
- Low-liquidity markets may show null for bid/ask and slippage fields
- Slug from a different prediction platform (not Polymarket) will not resolve
- Rate limits or payment failures return a 402 or 429 error

## How this service works

Market Intel & Signals ($0.02/call): Deep snapshot and execution microstructure for one Polymarket market: implied probability, best bid/ask/spread, 24h volume, liquidity depth, days to resolution, momentum, and estimated slippage to buy at $100 and $1000 order sizes from the live order book. Pass a slug, or omit it for the highest-volume open market right now. Signals are factual market data, not investment advice.

## Output

A structured JSON object containing: the market question and URL, outcome names, implied probability, best bid/ask/last trade prices and spread, 24h volume, liquidity depth in USD (bids and asks), a liquidity rating, days to resolution, 24h price change, and slippage estimates (average fill price, shares filled, and slippage % vs best) for $100 and $1000 buy order sizes.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "slug": {
       "type": "string",
       "minLength": 1,
       "description": "Polymarket market slug from a market URL, e.g. 'will-the-fed-cut-rates-in-march'. Omit to get the single highest-volume open market right now."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "question",
      "slug",
      "url",
      "outcomes",
      "impliedProbability",
      "prices",
      "volume24hr",
      "liquidity",
      "liquidityRating",
      "daysToResolution",
      "priceChange24h",
      "signals"
     ],
     "properties": {
      "url": {
       "type": "string"
      },
      "slug": {
       "type": "string"
      },
      "prices": {
       "type": "object",
       "required": [
        "bestBid",
        "bestAsk",
        "lastTrade",
        "spread"
       ],
       "properties": {
        "spread": {
         "anyOf": [
          {
           "type": "number"
          },
          {
           "type": "null"
          }
         ]
        },
        "bestAsk": {
         "anyOf": [
          {
           "type": "number"
          },
          {
           "type": "null"
          }
         ]
        },
        "bestBid": {
         "anyOf": [
          {
           "type": "number"
          },
          {
           "type": "null"
          }
         ]
        },
        "lastTrade": {
         "anyOf": [
          {
           "type": "number"
          },
          {
           "type": "null"
          }
         ]
        }
       },
       "additionalProperties": false
      },
      "signals": {
       "type": "object",
       "required": [
        "bookDepthUsd",
        "slippage"
       ],
       "properties": {
        "slippage": {
         "type": "array",
         "items": {
          "type": "object",
          "required": [
           "orderUsd",

… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polymarket-market-intel-execution-microstructure-snapshot-691617e7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.botsmith.dev](https://www.zero.xyz/host/x402.botsmith.dev/llms.txt)