diff --git a/CHANGELOG.md b/CHANGELOG.md
index d3eb7679f5b..6c189efda09 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,7 @@ Docs: https://docs.openclaw.ai
 - Agents/Azure OpenAI startup prompts: rephrase the built-in `/new`, `/reset`, and post-compaction startup instruction so Azure OpenAI deployments no longer hit HTTP 400 false positives from the content filter. (#43403) Thanks @xingsy97.
 - Config/validation: accept documented `agents.list[].params` per-agent overrides in strict config validation so `openclaw config validate` no longer rejects runtime-supported `cacheRetention`, `temperature`, and `maxTokens` settings. (#41171) Thanks @atian8179.
 - Android/onboarding QR scan: switch setup QR scanning to Google Code Scanner so onboarding uses a more reliable scanner instead of the legacy embedded ZXing flow. (#45021) Thanks @obviyus.
+- Config/web fetch: restore runtime validation for documented `tools.web.fetch.readability` and `tools.web.fetch.firecrawl` settings so valid web fetch configs no longer fail with unrecognized-key errors. (#42583) Thanks @stim64045-spec.
 
 ## 2026.3.12
 
diff --git a/src/config/schema.test.ts b/src/config/schema.test.ts
index 54aaa79c846..3d6ecced2ca 100644
--- a/src/config/schema.test.ts
+++ b/src/config/schema.test.ts
@@ -1,6 +1,7 @@
 import { beforeAll, describe, expect, it } from "vitest";
 import { buildConfigSchema, lookupConfigSchema } from "./schema.js";
 import { applyDerivedTags, CONFIG_TAGS, deriveTagsForPath } from "./schema.tags.js";
+import { ToolsSchema } from "./zod-schema.agent-runtime.js";
 
 describe("config schema", () => {
   type SchemaInput = NonNullable<Parameters<typeof buildConfigSchema>[0]>;
@@ -200,6 +201,51 @@ describe("config schema", () => {
     expect(tags).toContain("performance");
   });
 
+  it("accepts web fetch readability and firecrawl config in the runtime zod schema", () => {
+    const parsed = ToolsSchema.parse({
+      web: {
+        fetch: {
+          readability: true,
+          firecrawl: {
+            enabled: true,
+            apiKey: "firecrawl-test-key",
+            baseUrl: "https://api.firecrawl.dev",
+            onlyMainContent: true,
+            maxAgeMs: 60_000,
+            timeoutSeconds: 15,
+          },
+        },
+      },
+    });
+
+    expect(parsed?.web?.fetch?.readability).toBe(true);
+    expect(parsed?.web?.fetch).toMatchObject({
+      firecrawl: {
+        enabled: true,
+        apiKey: "firecrawl-test-key",
+        baseUrl: "https://api.firecrawl.dev",
+        onlyMainContent: true,
+        maxAgeMs: 60_000,
+        timeoutSeconds: 15,
+      },
+    });
+  });
+
+  it("rejects unknown keys inside web fetch firecrawl config", () => {
+    expect(() =>
+      ToolsSchema.parse({
+        web: {
+          fetch: {
+            firecrawl: {
+              enabled: true,
+              nope: true,
+            },
+          },
+        },
+      }),
+    ).toThrow();
+  });
+
   it("keeps tags in the allowed taxonomy", () => {
     const withTags = applyDerivedTags({
       "gateway.auth.token": {},
diff --git a/src/config/zod-schema.agent-runtime.ts b/src/config/zod-schema.agent-runtime.ts
index 680b79cdc16..7a87440a768 100644
--- a/src/config/zod-schema.agent-runtime.ts
+++ b/src/config/zod-schema.agent-runtime.ts
@@ -327,6 +327,18 @@ export const ToolsWebFetchSchema = z
     cacheTtlMinutes: z.number().nonnegative().optional(),
     maxRedirects: z.number().int().nonnegative().optional(),
     userAgent: z.string().optional(),
+    readability: z.boolean().optional(),
+    firecrawl: z
+      .object({
+        enabled: z.boolean().optional(),
+        apiKey: SecretInputSchema.optional().register(sensitive),
+        baseUrl: z.string().optional(),
+        onlyMainContent: z.boolean().optional(),
+        maxAgeMs: z.number().int().nonnegative().optional(),
+        timeoutSeconds: z.number().int().positive().optional(),
+      })
+      .strict()
+      .optional(),
   })
   .strict()
   .optional();