Order Book Depth API

Uniswap V3 liquidity depth analysis -- price impact at 1/2/5/10% levels. Slippage estimation pre-trade. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

{
  "mcpServers": {
    "orderbook-depth": {
      "url": "https://orderbook-depth.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

curl "https://orderbook-depth.api.klymax402.com/api/depth?pool=..."
# -> 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

Tool	Method	Path	Price	Description
dex_analyze_orderbook_depth	GET	/api/depth	$0.012	Analyze orderbook depth for a Uniswap V3 pool
dex_analyze_orderbook_depth	POST	/api/depth	$0.012	Analyze orderbook depth for a Uniswap V3 pool (POST variant)

dex_analyze_orderbook_depth

Use this when you need to analyze liquidity depth of a Uniswap V3 pool before a large trade. Returns depth analysis in JSON.

Parameters

Name	Type	Required	Description
pool	string	yes	Uniswap V3 pool address (0x...)
chain	string	no	Chain name: base, ethereum (default: base)

Returns

• currentPrice -- current pool price
• depth1pct -- USD liquidity available within 1% price impact
• depth2pct -- USD liquidity available within 2% price impact
• depth5pct -- USD liquidity available within 5% price impact
• depth10pct -- USD liquidity available within 10% price impact
• totalLiquidity -- total pool liquidity in USD
• feeTier -- pool fee tier (0.01%, 0.05%, 0.3%, 1%)
• token0/token1 -- pool token pair symbols

Example response:

{"currentPrice":3128.50,"depth1pct":850000,"depth2pct":2100000,"depth5pct":5400000,"depth10pct":9800000,"totalLiquidity":15200000,"feeTier":"0.3%","token0":"USDC","token1":"WETH"}

When to use: executing large on-chain trades to estimate slippage and determine optimal trade size. Essential for MEV-aware agents and OTC sizing.

Not for: swap quotes (use dex_get_swap_quote), token safety (use token_check_safety), token holders (use token_get_holder_analysis).

dex_analyze_orderbook_depth

Use this when you need to analyze liquidity depth of a Uniswap V3 pool before a large trade. Returns depth analysis in JSON. POST variant of dex_analyze_orderbook_depth -- same params passed as JSON body instead of query string.

Parameters

Name	Type	Required	Description
pool	string	yes	Uniswap V3 pool address (0x...)
chain	string	no	Chain name: base, ethereum (default: base)

Returns

• currentPrice -- current pool price
• depth1pct -- USD liquidity available within 1% price impact
• depth2pct -- USD liquidity available within 2% price impact
• depth5pct -- USD liquidity available within 5% price impact
• depth10pct -- USD liquidity available within 10% price impact
• totalLiquidity -- total pool liquidity in USD
• feeTier -- pool fee tier (0.01%, 0.05%, 0.3%, 1%)
• token0/token1 -- pool token pair symbols

Example response:

{"currentPrice":3128.50,"depth1pct":850000,"depth2pct":2100000,"depth5pct":5400000,"depth10pct":9800000,"totalLiquidity":15200000,"feeTier":"0.3%","token0":"USDC","token1":"WETH"}

When to use: executing large on-chain trades to estimate slippage and determine optimal trade size. Essential for MEV-aware agents and OTC sizing.

Not for: swap quotes (use dex_get_swap_quote), token safety (use token_check_safety), token holders (use token_get_holder_analysis).

Example agent prompts

• "Analyze liquidity depth of a Uniswap V3 pool before a large trade"
• "Analyze liquidity depth of a Uniswap V3 pool before a large trade"

Payment

• Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
• Network: Base L2 (eip155:8453)
• Asset: USDC
• Facilitator: Coinbase CDP (primary), PayAI (fallback)
• Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)

Part of klymax402

100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.

• Catalog: https://klymax402.com/llms.txt
• Full API reference: https://klymax402.com/llms-full.txt
• Live stats: https://klymax402.com/stats

License

MIT