{"record":{"id":"3d5c80af8c28ea21","repo":"Hmbown/CodeWhale","slug":"kimi-native-web-search-exceeded-the-bounded-tool-call-loop","errorCode":null,"errorMessage":"Kimi native web search exceeded the bounded tool-call loop","messagePattern":"Kimi native web search exceeded the bounded tool-call loop","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/tui/src/client/provider_native_search/kimi.rs","lineNumber":126,"sourceCode":"                .get(\"id\")\n                .and_then(Value::as_str)\n                .context(\"Kimi native web-search call omitted id\")?;\n            let arguments = tool_call\n                .pointer(\"/function/arguments\")\n                .and_then(Value::as_str)\n                .context(\"Kimi native web-search call omitted arguments\")?;\n            let _: Value = serde_json::from_str(arguments)\n                .context(\"Kimi native web-search arguments were not valid JSON\")?;\n            messages.push(json!({\n                \"role\": \"tool\",\n                \"tool_call_id\": id,\n                \"name\": \"$web_search\",\n                \"content\": arguments,\n            }));\n        }\n    }\n\n    bail!(\"Kimi native web search exceeded the bounded tool-call loop\")\n}\n\nasync fn search_formula(\n    client: &ProviderNativeSearchClient,\n    request: &ProviderNativeSearchRequest,\n) -> Result<ProviderNativeSearchResponse> {\n    let formula_path = format!(\"formulas/{WEB_SEARCH_FORMULA_URI}\");\n    let tools_payload = client\n        .get_json(&api_url(\n            &client.inner.base_url,\n            &format!(\"{formula_path}/tools\"),\n        ))\n        .await?;\n    let tools = formula_web_search_tools(&tools_payload)?;\n    let mut messages = vec![json!({\n        \"role\": \"user\",\n        \"content\": super::search_prompt(request),\n    })];","sourceCodeStart":108,"sourceCodeEnd":144,"githubUrl":"https://github.com/Hmbown/CodeWhale/blob/73e0f67d83c59909b571efdfc88c4bc28c309cb1/crates/tui/src/client/provider_native_search/kimi.rs#L108-L144","documentation":"The Kimi native web-search exchange runs as a bounded loop: each round executes returned $web_search calls and re-requests, but only up to MAX_NATIVE_SEARCH_TOOL_CALLS (8) total calls. If the loop exits its budget without the model producing a final answer, the client bails rather than looping forever.","triggerScenarios":"search_builtin exhausts its loop iterations because Kimi keeps returning additional rounds of $web_search tool calls and never yields a final non-tool-call answer within the 8-call budget.","commonSituations":"Very broad or ambiguous search queries causing many search rounds; a Kimi model stuck in a tool-call loop; MAX budget tuned too low for search-heavy workloads.","solutions":["Rephrase/narrow the search query so the model converges faster","Raise MAX_NATIVE_SEARCH_TOOL_CALLS if 8 is genuinely too small (mind cost/latency)","Inspect the conversation for a loop trigger (same query repeatedly re-issued)","Treat as a retry-able upstream misbehavior with backoff, or fall back to non-native search"],"exampleFix":"// before\nconst MAX_NATIVE_SEARCH_TOOL_CALLS: usize = 8;\n// after\nconst MAX_NATIVE_SEARCH_TOOL_CALLS: usize = 16; // search-heavy workloads need more rounds","handlingStrategy":"fallback","validationCode":"// keep queries narrow so the model converges in few rounds\nif query.split_whitespace().count() > 30 { query = summarize(query); }","typeGuard":null,"tryCatchPattern":"match provider.search(req).await {\n    Err(e) if e.to_string().contains(\"bounded tool-call loop\") => {\n        warn!(\"Kimi search looped past budget; retrying once with narrowed query\");\n        provider.search(req.with_narrowed_query()).await\n    }\n    other => other,\n}","preventionTips":["Phrase search queries narrowly","Budget for multi-round searches before raising MAX_NATIVE_SEARCH_TOOL_CALLS","Monitor for repeated identical tool calls (model loops)"],"tags":["kimi","web-search","infinite-loop-guard","limit-exceeded"],"backgroundTag":"value-out-of-range","analyzedSha":"73e0f67d83c59909b571efdfc88c4bc28c309cb1","analyzedAt":"2026-09-22T01:30:00.501Z","contentChangedAt":"2026-09-22T01:30:00.501Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}