{"name":"tool-call-diff","description":"Compare two agent run sequences and see how their tool calls differ. Send before and after arrays of tool calls (name/args or tool/arguments shape) and get back which calls were added, removed, or reordered, plus per-call argument drift with the exact changed argument paths from a deep compare. The result is exact and reproducible: the same replay comparison always returns the same diff. Built for agent regression diff work: confirming a prompt or code change didn't silently alter which tools an agent calls or what it passes them. Use it as a tool call diff API, an agent action drift checker, or a replay comparison step in CI before shipping an agent change.","price":"$0.008","method":"POST","input_schema":{"properties":{"before":{"type":"array","description":"The baseline tool-call sequence: a JSON array of call objects, each shaped {name, args} (or {tool, arguments} / {tool_name, input}). Required, max 500 entries."},"after":{"type":"array","description":"The new tool-call sequence to compare against 'before', same shape. Required, max 500 entries."}},"required":["before","after"]},"input_example":{"before":[{"name":"search","args":{"q":"hello","limit":10}},{"name":"fetch","args":{"url":"https://example.com"}}],"after":[{"name":"search","args":{"q":"world","limit":10}},{"name":"fetch","args":{"url":"https://example.com"}}]},"output_example":{"before_count":2,"after_count":2,"added":[],"removed":[],"reordered":[],"arg_drifted":[{"index_before":0,"index_after":0,"name":"search","arg_diffs":[{"path":"$.q","before":"hello","after":"world"}]}],"unchanged_count":1,"identical":false},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}