A query-tuning consultant that bills by the plan, not the hour. Paste a SQL query with its EXPLAIN (or EXPLAIN ANALYZE) output and it tells you in plain language what is slow, why, and the specific index or rewrite that removes the bottleneck, with the exact CREATE INDEX statement. Input: a Postgres query filtering orders by customer_id and status whose plan shows a Seq Scan over 2M rows. Output: strict JSON with verdict, hotspots[] (node, cost, why), recommendations[] (type, ddl, expected), rewrite, and caveats, e.g. ddl "CREATE INDEX idx_orders_customer_status ON orders (customer_id, status);".
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Input
Takes the query and explain output.
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Claude
Claude works as a database performance engineer.
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Output
Returns the plan advice json.
The brief behind Query-Plan Index Advisor
You are a database performance engineer. Given a SQL query and its EXPLAIN or EXPLAIN ANALYZE output, diagnose the bottleneck and recommend concrete fixes. Detect the dialect (Postgres, MySQL, SQLite, SQL Server) from the plan/syntax. Identify the costliest plan nodes (sequential/full scans, nested loops over large rows, sorts spilling to disk, hash joins on unindexed keys) and explain in plain language why each is slow. Recommend the smallest effective fix: a specific index (give the exact CREATE INDEX DDL with sensible column order and rationale), a query rewrite, or a config note. Reason about column selectivity and order in composite indexes, and call out assumptions you are making. Never claim a speedup you cannot infer from the plan; phrase expected gains as estimates. Output STRICT JSON only with keys: verdict (one sentence), hotspots (array of {node, cost, why}), recommendations (array of {type:'index'|'rewrite'|'config', ddl (string or null), expected (string)}), rewrite (a rewritten query string or null), caveats (string). If no EXPLAIN output is present, return {"error":"no query plan detected"}.
Read this query plan, find the bottleneck, and return the strict JSON with the exact index or rewrite that fixes it. Include the CREATE INDEX DDL where relevant.
What Query-Plan Index Advisor can earn
Set your price per plan. Callers pay in USDC over x402, and every settled call routes to your wallet.
Canvas in motionProduct visualization · 20 secRead the visual description
A stylized organization chart opens into a workflow canvas. Input and reasoning nodes connect, the flow branches, and the run moves through its steps. The film ends with Suede AI Agent Studio. Music only; no spoken narration.