diff --git a/packages/core/src/agent/research/finance-decisioner.test.ts b/packages/core/src/agent/research/finance-decisioner.test.ts
new file mode 100644
index 00000000..af7daec4
--- /dev/null
+++ b/packages/core/src/agent/research/finance-decisioner.test.ts
@@ -0,0 +1,68 @@
+import { describe, expect, it } from "vitest";
+import { buildInternalFinanceGuidance, decideFinanceEvidencePlan } from "./finance-decisioner.js";
+
+describe("decideFinanceEvidencePlan", () => {
+  it("returns undefined for non-finance prompts", () => {
+    const result = decideFinanceEvidencePlan({
+      prompt: "Write a TypeScript utility to parse CSV files.",
+      tools: ["read", "write", "exec"],
+    });
+    expect(result).toBeUndefined();
+  });
+
+  it("prefers data_only for secondary market non-event tasks", () => {
+    const result = decideFinanceEvidencePlan({
+      prompt: "Analyze AAPL valuation based on 5-year financial statements.",
+      tools: ["data", "web_search", "web_fetch"],
+    });
+    expect(result).toBeDefined();
+    expect(result?.plan).toBe("data_only");
+    expect(result?.marketRoute).toBe("secondary");
+    expect(result?.reasons).toContain("secondary_market_task");
+  });
+
+  it("prefers hybrid for event-driven secondary tasks", () => {
+    const result = decideFinanceEvidencePlan({
+      prompt: "Why did AAPL drop after latest earnings and guidance update?",
+      tools: ["data", "web_search", "web_fetch"],
+    });
+    expect(result).toBeDefined();
+    expect(result?.plan).toBe("hybrid");
+    expect(result?.reasons).toContain("event_driven");
+    expect(result?.reasons).toContain("causal_explanation_needed");
+  });
+
+  it("prefers web_first for primary market tasks without ticker", () => {
+    const result = decideFinanceEvidencePlan({
+      prompt: "Review this pre-IPO issuance structure and lock-up risks.",
+      tools: ["data", "web_search", "web_fetch"],
+    });
+    expect(result).toBeDefined();
+    expect(result?.marketRoute).toBe("primary_no_ticker");
+    expect(result?.plan).toBe("web_first");
+  });
+
+  it("degrades when web tools are unavailable for event-driven tasks", () => {
+    const result = decideFinanceEvidencePlan({
+      prompt: "Analyze latest earnings surprise drivers for TSLA stock.",
+      tools: ["data"],
+    });
+    expect(result).toBeDefined();
+    expect(result?.reasons).toContain("web_tools_unavailable");
+    expect(result?.confidencePenalty).toBe("high");
+  });
+});
+
+describe("buildInternalFinanceGuidance", () => {
+  it("formats internal guidance text", () => {
+    const decision = decideFinanceEvidencePlan({
+      prompt: "Analyze latest AAPL earnings impact on valuation.",
+      tools: ["data", "web_search"],
+    });
+    expect(decision).toBeDefined();
+    const guidance = buildInternalFinanceGuidance(decision!);
+    expect(guidance).toContain("Internal Finance Research Guidance");
+    expect(guidance).toContain("Preferred evidence plan:");
+    expect(guidance).toContain("Do not expose technical labels");
+  });
+});
diff --git a/packages/core/src/agent/research/finance-decisioner.ts b/packages/core/src/agent/research/finance-decisioner.ts
new file mode 100644
index 00000000..7df1be8d
--- /dev/null
+++ b/packages/core/src/agent/research/finance-decisioner.ts
@@ -0,0 +1,304 @@
+/**
+ * Finance evidence decisioner.
+ *
+ * Produces an internal research plan for finance tasks:
+ * - data_only
+ * - hybrid (data + web validation)
+ * - web_first
+ *
+ * The output is intended for internal orchestration only.
+ */
+
+export type FinanceEvidencePlan = "data_only" | "hybrid" | "web_first";
+
+export type FinanceMarketRoute = "secondary" | "primary_with_ticker" | "primary_no_ticker";
+
+export type FinanceConfidencePenalty = "low" | "medium" | "high";
+
+export interface FinanceDecisionInput {
+  prompt: string;
+  tools: string[];
+}
+
+export interface FinanceDecision {
+  plan: FinanceEvidencePlan;
+  marketRoute: FinanceMarketRoute;
+  confidencePenalty: FinanceConfidencePenalty;
+  reasons: string[];
+  score: Record<FinanceEvidencePlan, number>;
+}
+
+const FINANCE_KEYWORDS = [
+  "stock",
+  "stocks",
+  "equity",
+  "equities",
+  "valuation",
+  "financial",
+  "finance",
+  "earnings",
+  "revenue",
+  "eps",
+  "cash flow",
+  "balance sheet",
+  "income statement",
+  "pe ratio",
+  "market cap",
+  "ipo",
+  "pre-ipo",
+  "listing",
+  "ticker",
+  "一级市场",
+  "二级市场",
+  "财报",
+  "股票",
+  "估值",
+  "市值",
+  "募资",
+  "锁定期",
+  "稀释",
+];
+
+const PRIMARY_MARKET_KEYWORDS = [
+  "ipo",
+  "pre-ipo",
+  "prospectus",
+  "s-1",
+  "f-1",
+  "roadshow",
+  "listing",
+  "follow-on",
+  "new issuance",
+  "lock-up",
+  "dilution",
+  "一级市场",
+  "募资",
+  "锁定期",
+  "稀释",
+];
+
+const EVENT_DRIVEN_KEYWORDS = [
+  "latest",
+  "recent",
+  "today",
+  "yesterday",
+  "breaking",
+  "earnings call",
+  "guidance",
+  "surprise",
+  "selloff",
+  "policy",
+  "fed",
+  "fomc",
+  "news",
+  "headline",
+  "突发",
+  "最新",
+  "消息",
+  "政策",
+  "财报后",
+];
+
+const CAUSAL_KEYWORDS = [
+  "why",
+  "reason",
+  "driver",
+  "impact",
+  "because",
+  "attribution",
+  "explain",
+  "原因",
+  "驱动",
+  "影响",
+  "为什么",
+];
+
+const TIME_SENSITIVE_KEYWORDS = [
+  "latest",
+  "today",
+  "this week",
+  "this month",
+  "current",
+  "now",
+  "最新",
+  "当前",
+  "近期",
+];
+
+const COMMON_UPPERCASE_NON_TICKERS = new Set([
+  "IPO",
+  "SEC",
+  "USD",
+  "CNY",
+  "HKD",
+  "GDP",
+  "CPI",
+  "PPI",
+  "FED",
+  "FOMC",
+  "EPS",
+  "FCF",
+  "PE",
+  "TTM",
+  "DCF",
+]);
+
+function includesAny(text: string, keywords: string[]): boolean {
+  return keywords.some((keyword) => text.includes(keyword));
+}
+
+function normalizeTools(tools: string[]): Set<string> {
+  return new Set(tools.map((tool) => tool.toLowerCase()));
+}
+
+function hasTickerSignal(prompt: string): boolean {
+  const explicit = /(?:\$|ticker\s*[:=]\s*)([A-Za-z]{1,6})/g;
+  if (explicit.test(prompt)) return true;
+
+  const upperWords = prompt.match(/\b[A-Z]{1,6}\b/g) ?? [];
+  const candidates = upperWords.filter((word) => !COMMON_UPPERCASE_NON_TICKERS.has(word));
+  return candidates.length > 0;
+}
+
+function isFinanceTask(prompt: string): boolean {
+  const normalized = prompt.toLowerCase();
+  return includesAny(normalized, FINANCE_KEYWORDS);
+}
+
+function resolveMarketRoute(prompt: string): FinanceMarketRoute {
+  const normalized = prompt.toLowerCase();
+  const primary = includesAny(normalized, PRIMARY_MARKET_KEYWORDS);
+  if (!primary) return "secondary";
+  return hasTickerSignal(prompt) ? "primary_with_ticker" : "primary_no_ticker";
+}
+
+function choosePlan(score: Record<FinanceEvidencePlan, number>): FinanceEvidencePlan {
+  const order: FinanceEvidencePlan[] = ["data_only", "hybrid", "web_first"];
+  let best: FinanceEvidencePlan = order[0];
+  for (const plan of order) {
+    if (score[plan] > score[best]) best = plan;
+  }
+  return best;
+}
+
+function resolveConfidencePenalty(params: {
+  plan: FinanceEvidencePlan;
+  hasData: boolean;
+  hasWeb: boolean;
+  route: FinanceMarketRoute;
+  eventDriven: boolean;
+  timeSensitive: boolean;
+}): FinanceConfidencePenalty {
+  const { plan, hasData, hasWeb, route, eventDriven, timeSensitive } = params;
+
+  if (!hasData && !hasWeb) return "high";
+  if ((plan === "hybrid" || plan === "web_first") && !hasWeb) return "high";
+  if (plan === "data_only" && (eventDriven || timeSensitive) && !hasWeb) return "high";
+  if (route === "primary_no_ticker") return "medium";
+  if (plan === "data_only" && (eventDriven || timeSensitive)) return "medium";
+  return "low";
+}
+
+export function decideFinanceEvidencePlan(input: FinanceDecisionInput): FinanceDecision | undefined {
+  const { prompt } = input;
+  if (!isFinanceTask(prompt)) return undefined;
+
+  const normalized = prompt.toLowerCase();
+  const toolSet = normalizeTools(input.tools);
+  const hasData = toolSet.has("data");
+  const hasWebSearch = toolSet.has("web_search");
+  const hasWebFetch = toolSet.has("web_fetch");
+  const hasWeb = hasWebSearch || hasWebFetch;
+
+  const route = resolveMarketRoute(prompt);
+  const eventDriven = includesAny(normalized, EVENT_DRIVEN_KEYWORDS);
+  const causal = includesAny(normalized, CAUSAL_KEYWORDS);
+  const timeSensitive = includesAny(normalized, TIME_SENSITIVE_KEYWORDS);
+
+  const score: Record<FinanceEvidencePlan, number> = {
+    data_only: hasData ? 1.0 : -3.0,
+    hybrid: hasData && hasWeb ? 1.0 : -2.0,
+    web_first: hasWeb ? 0.6 : -3.0,
+  };
+
+  const reasons: string[] = [];
+
+  if (route === "secondary") {
+    score.data_only += 0.7;
+    score.hybrid += 0.4;
+    reasons.push("secondary_market_task");
+  } else if (route === "primary_with_ticker") {
+    score.hybrid += 0.9;
+    score.web_first += 0.3;
+    score.data_only -= 0.2;
+    reasons.push("primary_market_with_ticker");
+  } else {
+    score.web_first += 1.3;
+    score.hybrid += 0.7;
+    score.data_only -= 1.0;
+    reasons.push("primary_market_without_ticker");
+  }
+
+  if (eventDriven) {
+    score.hybrid += 0.9;
+    score.web_first += 0.4;
+    score.data_only -= 0.5;
+    reasons.push("event_driven");
+  }
+
+  if (timeSensitive) {
+    score.hybrid += 0.6;
+    score.web_first += 0.3;
+    score.data_only -= 0.4;
+    reasons.push("time_sensitive");
+  }
+
+  if (causal) {
+    score.hybrid += 0.4;
+    score.web_first += 0.2;
+    score.data_only -= 0.2;
+    reasons.push("causal_explanation_needed");
+  }
+
+  if (!hasWeb) {
+    score.hybrid -= 2.0;
+    score.web_first -= 3.0;
+    reasons.push("web_tools_unavailable");
+  }
+  if (!hasData) {
+    score.data_only -= 2.5;
+    score.hybrid -= 1.5;
+    score.web_first += 0.5;
+    reasons.push("data_tool_unavailable");
+  }
+
+  const plan = choosePlan(score);
+  const confidencePenalty = resolveConfidencePenalty({
+    plan,
+    hasData,
+    hasWeb,
+    route,
+    eventDriven,
+    timeSensitive,
+  });
+
+  return {
+    plan,
+    marketRoute: route,
+    confidencePenalty,
+    reasons,
+    score,
+  };
+}
+
+export function buildInternalFinanceGuidance(decision: FinanceDecision): string {
+  return [
+    "## Internal Finance Research Guidance",
+    "This section is internal orchestration guidance. Do not expose technical labels directly to the user unless they explicitly request methodology details.",
+    `Preferred evidence plan: ${decision.plan}`,
+    `Market route: ${decision.marketRoute}`,
+    `Confidence penalty if evidence gaps remain: ${decision.confidencePenalty}`,
+    `Decision factors: ${decision.reasons.join(", ") || "none"}`,
+    "Execution policy: start with the preferred plan, then escalate evidence collection if signals conflict or causality remains unresolved.",
+  ].join("\n");
+}
diff --git a/packages/core/src/agent/runner.ts b/packages/core/src/agent/runner.ts
index beaa4faf..8ea675f3 100644
--- a/packages/core/src/agent/runner.ts
+++ b/packages/core/src/agent/runner.ts
@@ -35,8 +35,12 @@ import {
 import {
   buildSystemPrompt as buildStructuredSystemPrompt,
   collectRuntimeInfo,
-  type SystemPromptMode,
 } from "./system-prompt/index.js";
+import {
+  buildInternalFinanceGuidance,
+  decideFinanceEvidencePlan,
+  type FinanceDecision,
+} from "./research/finance-decisioner.js";
 import type { AuthProfileFailureReason } from "./auth-profiles/index.js";
 import {
   sanitizeToolCallInputs,
@@ -425,6 +429,7 @@ export class Agent {
   ): Promise<AgentRunResult> {
     await this.ensureInitialized();
     this.refreshAuthState();
+    this.applyFinanceResearchGuidance(prompt);
     this.output.state.lastAssistantText = "";
     this.currentUserDisplayPrompt = options?.displayPrompt;
 
@@ -968,6 +973,13 @@ export class Agent {
    * Shared by constructor (via buildFullSystemPrompt) and reloadSystemPrompt.
    */
   private rebuildSystemPrompt(toolNames: string[]): string | undefined {
+    return this.rebuildSystemPromptWithExtra(toolNames);
+  }
+
+  private rebuildSystemPromptWithExtra(
+    toolNames: string[],
+    extraSystemPrompt?: string | undefined,
+  ): string | undefined {
     const profile = this.profile?.getProfile();
     if (!profile) return undefined;
 
@@ -993,6 +1005,40 @@ export class Agent {
       tools: toolNames,
       skillsPrompt,
       runtime,
+      extraSystemPrompt,
+    });
+  }
+
+  private applyFinanceResearchGuidance(prompt: string): void {
+    const toolNames = (this.agent.state.tools ?? []).map((t: { name: string }) => t.name);
+    const decision = decideFinanceEvidencePlan({ prompt, tools: toolNames });
+
+    const guidance = decision ? buildInternalFinanceGuidance(decision) : undefined;
+    const systemPrompt = this.rebuildSystemPromptWithExtra(toolNames, guidance);
+    if (systemPrompt) {
+      this.agent.setSystemPrompt(systemPrompt);
+      this.session.setSystemPrompt(systemPrompt);
+    }
+
+    this.saveFinanceDecisionMeta(decision);
+  }
+
+  private saveFinanceDecisionMeta(decision: FinanceDecision | undefined): void {
+    const currentMeta = this.session.getMeta() ?? {};
+    if (!decision) {
+      // Keep previously saved decisions for non-finance turns.
+      return;
+    }
+    this.session.saveMeta({
+      ...currentMeta,
+      researchDecision: {
+        domain: "finance",
+        plan: decision.plan,
+        marketRoute: decision.marketRoute,
+        confidencePenalty: decision.confidencePenalty,
+        reasons: decision.reasons,
+        timestamp: Date.now(),
+      },
     });
   }
 }
diff --git a/packages/core/src/agent/session/types.ts b/packages/core/src/agent/session/types.ts
index ec734424..48c037a9 100644
--- a/packages/core/src/agent/session/types.ts
+++ b/packages/core/src/agent/session/types.ts
@@ -9,6 +9,15 @@ export type SessionMeta = {
   reasoningMode?: string;
   /** Context window token 数 */
   contextWindowTokens?: number;
+  /** Internal finance evidence decision from the latest run */
+  researchDecision?: {
+    domain: "finance";
+    plan: "data_only" | "hybrid" | "web_first";
+    marketRoute: "secondary" | "primary_with_ticker" | "primary_no_ticker";
+    confidencePenalty: "low" | "medium" | "high";
+    reasons: string[];
+    timestamp: number;
+  } | undefined;
 };
 
 export type SessionEntry =