diff --git a/CHANGELOG.md b/CHANGELOG.md
index 95c57c69fe3..6591be35a51 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -224,6 +224,7 @@ Docs: https://docs.openclaw.ai
 - WhatsApp: transcribe accepted voice notes before agent dispatch while keeping spoken transcripts out of command authorization. (#64120) Thanks @rogerdigital.
 - Plugins/CLI: expose channel plugin CLI descriptors during discovery-mode plugin loads so snapshot registries keep channel commands visible without activating full runtimes. (#71309) Thanks @gumadeiras.
 - WhatsApp: deliver media generated by tool-result replies while still suppressing text-only tool chatter. (#60968) Thanks @adaclaw.
+- Config/agents: accept `agents.list[].contextTokens` in strict config validation so per-agent overrides survive hot reload, letting `/status` reflect the configured model window instead of the 200k fallback. Fixes #70692. (#71247) Thanks @statxc.
 
 ## 2026.4.23
 
diff --git a/docs/.generated/config-baseline.sha256 b/docs/.generated/config-baseline.sha256
index b4da6f725d4..3c080dd76cf 100644
--- a/docs/.generated/config-baseline.sha256
+++ b/docs/.generated/config-baseline.sha256
@@ -1,4 +1,4 @@
-71ef32b7723f64d4a84ac43bb6d41ff21e0d77a099b42e026d8b0d3d5301f917  config-baseline.json
-cfab1910132ed23777005e0c650a13f44626b0450963f733e9de56a13323ae2b  config-baseline.core.json
+5c7709e1686f6ad90beaa8e34ba45e6445e34c48d598407bd837361b58c365ab  config-baseline.json
+98c83ce8af9ec4703726d7d673add95279be008a801b1d298982cbd9c1785747  config-baseline.core.json
 22d7cd6d8279146b2d79c9531a55b80b52a2c99c81338c508104729154fdd02d  config-baseline.channel.json
 86f615b7d267b03888af0af7ccb3f8232a6b636f8a741d522ff425e46729ba81  config-baseline.plugin.json
diff --git a/src/config/schema.base.generated.ts b/src/config/schema.base.generated.ts
index 6834bfb20d2..a843427a647 100644
--- a/src/config/schema.base.generated.ts
+++ b/src/config/schema.base.generated.ts
@@ -6432,6 +6432,11 @@ export const GENERATED_BASE_CONFIG_SCHEMA: BaseConfigSchemaResponse = {
                   description:
                     "Optional per-agent overrides for the focused context budget knobs. Omitted fields inherit agents.defaults.contextLimits.",
                 },
+                contextTokens: {
+                  type: "integer",
+                  exclusiveMinimum: 0,
+                  maximum: 9007199254740991,
+                },
                 heartbeat: {
                   type: "object",
                   properties: {
diff --git a/src/config/types.agents.ts b/src/config/types.agents.ts
index 23b69d93c2a..976eafa422f 100644
--- a/src/config/types.agents.ts
+++ b/src/config/types.agents.ts
@@ -95,6 +95,8 @@ export type AgentConfig = {
   skillsLimits?: Pick<SkillsLimitsConfig, "maxSkillsPromptChars">;
   /** Optional per-agent overrides for selected context/token-heavy limits. */
   contextLimits?: AgentContextLimitsConfig;
+  /** Optional per-agent override for the model's total context window (in tokens). */
+  contextTokens?: number;
   /** Optional per-agent heartbeat overrides. */
   heartbeat?: AgentDefaultsConfig["heartbeat"];
   identity?: IdentityConfig;
diff --git a/src/config/zod-schema.agent-defaults.test.ts b/src/config/zod-schema.agent-defaults.test.ts
index 120b3a82594..f0d1ac15690 100644
--- a/src/config/zod-schema.agent-defaults.test.ts
+++ b/src/config/zod-schema.agent-defaults.test.ts
@@ -116,4 +116,19 @@ describe("agent defaults schema", () => {
     expect(() => AgentDefaultsSchema.parse({ heartbeat: { timeoutSeconds: 0 } })).toThrow();
     expect(() => AgentEntrySchema.parse({ id: "ops", heartbeat: { timeoutSeconds: 0 } })).toThrow();
   });
+
+  it("accepts per-agent contextTokens override", () => {
+    const agent = AgentEntrySchema.parse({
+      id: "ops",
+      contextTokens: 1_048_576,
+    });
+    expect(agent.contextTokens).toBe(1_048_576);
+  });
+
+  it("rejects non-positive contextTokens on agent entries and defaults", () => {
+    expect(() => AgentEntrySchema.parse({ id: "ops", contextTokens: 0 })).toThrow();
+    expect(() => AgentEntrySchema.parse({ id: "ops", contextTokens: -1 })).toThrow();
+    expect(() => AgentEntrySchema.parse({ id: "ops", contextTokens: 1.5 })).toThrow();
+    expect(() => AgentDefaultsSchema.parse({ contextTokens: 0 })).toThrow();
+  });
 });
diff --git a/src/config/zod-schema.agent-runtime.ts b/src/config/zod-schema.agent-runtime.ts
index b2037b3bcb5..8f003787e9a 100644
--- a/src/config/zod-schema.agent-runtime.ts
+++ b/src/config/zod-schema.agent-runtime.ts
@@ -829,6 +829,7 @@ export const AgentEntrySchema = z
     humanDelay: HumanDelaySchema.optional(),
     skillsLimits: AgentSkillsLimitsSchema,
     contextLimits: AgentContextLimitsSchema,
+    contextTokens: z.number().int().positive().optional(),
     heartbeat: HeartbeatSchema,
     identity: IdentitySchema,
     groupChat: GroupChatSchema,