{
  "markdown": "# Order Book Depth API\n\n[![MCP Server](https://img.shields.io/badge/MCP-server-blue)](https://orderbook-depth.api.klymax402.com/mcp)\n[![x402](https://img.shields.io/badge/payments-x402-6E56CF)](https://x402.org)\n[![License: MIT](https://img.shields.io/badge/license-MIT-green)](LICENSE)\n\nUniswap V3 liquidity depth analysis -- price impact at 1/2/5/10% levels. Slippage estimation pre-trade. Pay-per-call via [x402](https://x402.org) (USDC on Base L2) -- no API key, no signup, no rate-limit wall.\n\nPart of the [klymax402](https://klymax402.com) marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.\n\n## Quickstart -- MCP\n\nAdd to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):\n\n```json\n{\n  \"mcpServers\": {\n    \"orderbook-depth\": {\n      \"url\": \"https://orderbook-depth.api.klymax402.com/mcp\"\n    }\n  }\n}\n```\n\n## Quickstart -- HTTP (x402)\n\n```bash\ncurl \"https://orderbook-depth.api.klymax402.com/api/depth?pool=...\"\n# -> 402 Payment Required, with an x402 payment challenge in the response body\n```\n\nAny x402-aware client ([`@x402/fetch`](https://www.npmjs.com/package/@x402/fetch), [`x402-agent-tools`](https://www.npmjs.com/package/x402-agent-tools), ATXP) handles the 402 -> sign -> retry cycle automatically.\n\n## Tools\n\n| Tool | Method | Path | Price | Description |\n|---|---|---|---|---|\n| `dex_analyze_orderbook_depth` | GET | `/api/depth` | $0.012 | Analyze orderbook depth for a Uniswap V3 pool |\n| `dex_analyze_orderbook_depth` | POST | `/api/depth` | $0.012 | Analyze orderbook depth for a Uniswap V3 pool (POST variant) |\n\n### `dex_analyze_orderbook_depth`\n\nUse this when you need to analyze liquidity depth of a Uniswap V3 pool before a large trade. Returns depth analysis in JSON.\n\n**Parameters**\n\n| Name | Type | Required | Description |\n|---|---|---|---|\n| `pool` | string | yes | Uniswap V3 pool address (0x...) |\n| `chain` | string | no | Chain name: base, ethereum (default: base) |\n\n**Returns**\n\n- `currentPrice` -- current pool price\n- `depth1pct` -- USD liquidity available within 1% price impact\n- `depth2pct` -- USD liquidity available within 2% price impact\n- `depth5pct` -- USD liquidity available within 5% price impact\n- `depth10pct` -- USD liquidity available within 10% price impact\n- `totalLiquidity` -- total pool liquidity in USD\n- `feeTier` -- pool fee tier (0.01%, 0.05%, 0.3%, 1%)\n- `token0/token1` -- pool token pair symbols\n\nExample response:\n\n```json\n{\"currentPrice\":3128.50,\"depth1pct\":850000,\"depth2pct\":2100000,\"depth5pct\":5400000,\"depth10pct\":9800000,\"totalLiquidity\":15200000,\"feeTier\":\"0.3%\",\"token0\":\"USDC\",\"token1\":\"WETH\"}\n```\n\n**When to use**: executing large on-chain trades to estimate slippage and determine optimal trade size. Essential for MEV-aware agents and OTC sizing.\n\n**Not for**: swap quotes (use `dex_get_swap_quote`), token safety (use `token_check_safety`), token holders (use `token_get_holder_analysis`).\n\n### `dex_analyze_orderbook_depth`\n\nUse 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.\n\n**Parameters**\n\n| Name | Type | Required | Description |\n|---|---|---|---|\n| `pool` | string | yes | Uniswap V3 pool address (0x...) |\n| `chain` | string | no | Chain name: base, ethereum (default: base) |\n\n**Returns**\n\n- `currentPrice` -- current pool price\n- `depth1pct` -- USD liquidity available within 1% price impact\n- `depth2pct` -- USD liquidity available within 2% price impact\n- `depth5pct` -- USD liquidity available within 5% price impact\n- `depth10pct` -- USD liquidity available within 10% price impact\n- `totalLiquidity` -- total pool liquidity in USD\n- `feeTier` -- pool fee tier (0.01%, 0.05%, 0.3%, 1%)\n- `token0/token1` -- pool token pair symbols\n\nExample response:\n\n```json\n{\"currentPrice\":3128.50,\"depth1pct\":850000,\"depth2pct\":2100000,\"depth5pct\":5400000,\"depth10pct\":9800000,\"totalLiquidity\":15200000,\"feeTier\":\"0.3%\",\"token0\":\"USDC\",\"token1\":\"WETH\"}\n```\n\n**When to use**: executing large on-chain trades to estimate slippage and determine optimal trade size. Essential for MEV-aware agents and OTC sizing.\n\n**Not for**: swap quotes (use `dex_get_swap_quote`), token safety (use `token_check_safety`), token holders (use `token_get_holder_analysis`).\n\n## Example agent prompts\n\n- \"Analyze liquidity depth of a Uniswap V3 pool before a large trade\"\n- \"Analyze liquidity depth of a Uniswap V3 pool before a large trade\"\n\n## Payment\n\n- Protocol: [x402](https://x402.org) -- HTTP-native pay-per-call, no signup, no API key\n- Network: Base L2 (`eip155:8453`)\n- Asset: USDC\n- Facilitator: Coinbase CDP (primary), PayAI (fallback)\n- Also reachable via [ATXP](https://atxp.ai) (OAuth-wrapped x402, RFC 9728 protected-resource metadata)\n\n## Part of klymax402\n\n100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.\n\n- Catalog: https://klymax402.com/llms.txt\n- Full API reference: https://klymax402.com/llms-full.txt\n- Live stats: https://klymax402.com/stats\n\n## License\n\nMIT\n",
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}