# Base DEX Market Monitor

> Base DEX Market Monitor is a paid API for AI agents from nohands-coinbase-bazaar.bytoken2023.workers.dev, paid per call via x402, $0.005004/call, status unknown (last checked 2026-11-02).

Retrieves real-time DEX price, liquidity, volume, and trade activity data for a token on the Base blockchain.

## Facts

- Endpoint: GET https://nohands-coinbase-bazaar.bytoken2023.workers.dev/v1/x402/base/dex-market-monitor?utm_source=zero.xyz
- Price: $0.005004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-dex-market-monitor-d2873ffd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZfrrBwmggVERK-e1HlMv_

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 base-dex-market-monitor-d2873ffd
```

Example prompt: Can you pull up the current DEX price, liquidity, and 24-hour trading volume for the token at 0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed on Base?

## When to prefer this

Choose this endpoint when you need real-time DEX market data specifically for tokens on the Base blockchain, including price, liquidity, and volume in a single call. Prefer this over generic blockchain explorers when you need aggregated DEX-level market intelligence rather than raw on-chain transactions. Ideal for DeFi agents that need pre-trade market checks, price monitoring, or liquidity assessment on Base.

## Known failure modes

- Token not found on Base DEX — returns error if the token has no DEX listings on Base
- Invalid token address format — malformed or non-Base address causes request failure
- No liquidity available — token exists but has zero or negligible pool liquidity
- Rate limiting or payment failure — x402 payment not accepted or insufficient USDC balance
- Network congestion — Base RPC data may be delayed or unavailable during outages

## How this service works

Monitor Base DEX price, liquidity, volume, and trade activity for a token.

## Output

Returns current DEX market data for the specified token on Base, including price (likely in USD or paired asset), liquidity pool depth, 24-hour trading volume, and recent trade activity metrics such as number of trades and buy/sell ratios.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "token"
     ],
     "properties": {
      "token": {
       "type": "string",
       "example": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
       "pattern": "^0x[a-fA-F0-9]{40}$",
       "description": "Base token contract to monitor across DEX pairs."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "pretrade_evidence": {
       "type": "object",
       "required": [
        "evidence_version",
        "decision_scope",
        "evidence_status",
        "reason_codes",
        "observation",
        "sources",
        "pairs"
       ],
       "properties": {
        "pairs": {
         "type": "array",
         "items": {
          "type": "object",
          "required": [
           "pair_address",
           "requested_token_role",
           "evidence_status"
          ],
          "properties": {
           "flags": {
            "type": "array",
            "items": {
             "type": "string"
            }
           },
           "pair_address": {
            "type": [
             "string",
             "null"
            ]
           },
           "invalid_fields": {
            "type": "array",
            "items": {
             "type": "string"
            }
           },
           "missing_fields": {
            "type": "array",
            "items": {
             "type": "string"
            }
           },
           "evidence_status": {
            "enum": [
             "OBSERVED",
             "INCOMPLETE"
            ],
            "type": "string"
           },
           "base_token_address": {
            "type": [
             "string",
             "null"
            ]
           },
           "quote_token_address": {
            "type": [
             "string",
             "null"
            ]
           },
           "requested_token_role": {
            "enum": [
           
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-dex-market-monitor-d2873ffd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nohands-coinbase-bazaar.bytoken2023.workers.dev](https://www.zero.xyz/host/nohands-coinbase-bazaar.bytoken2023.workers.dev/llms.txt)