From 3e08186d3ec0fec6b4ea2320aea744791698ff0c Mon Sep 17 00:00:00 2001
From: can1357 <me@can.ac>
Date: Sun, 15 Mar 2026 17:04:08 +0100
Subject: [PATCH] feat(coding-agent): added disabledExtensions setting to
 filter skills

Fixes #413
---
 packages/coding-agent/CHANGELOG.md                  | 4 ++++
 packages/coding-agent/src/config/settings-schema.ts | 1 +
 packages/coding-agent/src/extensibility/skills.ts   | 5 +++++
 packages/coding-agent/src/sdk.ts                    | 7 ++++++-
 4 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index c855b7661..906b7bc6e 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -1,6 +1,10 @@
 # Changelog
 
 ## [Unreleased]
+### Added
+
+- Added `disabledExtensions` setting to allow disabling specific extensions and skills by ID
+- Added support for filtering skills by disabled extension IDs with `skill:` prefix
 
 ## [13.12.1] - 2026-03-15
 ### Added
diff --git a/packages/coding-agent/src/config/settings-schema.ts b/packages/coding-agent/src/config/settings-schema.ts
index d81ded9d0..08db2fcfa 100644
--- a/packages/coding-agent/src/config/settings-schema.ts
+++ b/packages/coding-agent/src/config/settings-schema.ts
@@ -1574,6 +1574,7 @@ export interface SkillsSettings {
 	customDirectories?: string[];
 	ignoredSkills?: string[];
 	includeSkills?: string[];
+	disabledExtensions?: string[];
 }
 
 export interface CommitSettings {
diff --git a/packages/coding-agent/src/extensibility/skills.ts b/packages/coding-agent/src/extensibility/skills.ts
index 7309b04dc..d9f865ab1 100644
--- a/packages/coding-agent/src/extensibility/skills.ts
+++ b/packages/coding-agent/src/extensibility/skills.ts
@@ -83,6 +83,7 @@ export async function loadSkills(options: LoadSkillsOptions = {}): Promise<LoadS
 		customDirectories = [],
 		ignoredSkills = [],
 		includeSkills = [],
+		disabledExtensions = [],
 	} = options;
 
 	// Early return if skills are disabled
@@ -123,8 +124,12 @@ export async function loadSkills(options: LoadSkillsOptions = {}): Promise<LoadS
 		return ignoredSkills.some(pattern => new Bun.Glob(pattern).match(name));
 	}
 
+	const disabledSkillNames = new Set(
+		(disabledExtensions ?? []).filter(id => id.startsWith("skill:")).map(id => id.slice(6)),
+	);
 	// Filter skills by source and patterns first
 	const filteredSkills = result.items.filter(capSkill => {
+		if (disabledSkillNames.has(capSkill.name)) return false;
 		if (!isSourceEnabled(capSkill._source)) return false;
 		if (matchesIgnorePatterns(capSkill.name)) return false;
 		if (!matchesIncludePatterns(capSkill.name)) return false;
diff --git a/packages/coding-agent/src/sdk.ts b/packages/coding-agent/src/sdk.ts
index 8fe8b5832..57c84c2a9 100644
--- a/packages/coding-agent/src/sdk.ts
+++ b/packages/coding-agent/src/sdk.ts
@@ -627,8 +627,11 @@ export async function createAgentSession(options: CreateAgentSessionOptions = {}
 		modelRegistry.refreshInBackground();
 	}
 	const skillsSettings = settings.getGroup("skills") as SkillsSettings;
+	const disabledExtensionIds = settings.get("disabledExtensions") ?? [];
 	const discoveredSkillsPromise =
-		options.skills === undefined ? discoverSkills(cwd, agentDir, skillsSettings) : undefined;
+		options.skills === undefined
+			? discoverSkills(cwd, agentDir, { ...skillsSettings, disabledExtensions: disabledExtensionIds })
+			: undefined;
 
 	// Initialize provider preferences from settings
 	const webSearchProvider = settings.get("providers.webSearch");
@@ -1006,12 +1009,14 @@ export async function createAgentSession(options: CreateAgentSessionOptions = {}
 			...(options.additionalExtensionPaths ?? []),
 			...((settings.get("extensions") as string[]) ?? []),
 		];
+		const disabledExtensionIds = settings.get("disabledExtensions") ?? [];
 		extensionsResult = await logger.timeAsync(
 			"discoverAndLoadExtensions",
 			discoverAndLoadExtensions,
 			configuredPaths,
 			cwd,
 			eventBus,
+			disabledExtensionIds,
 		);
 		for (const { path, error } of extensionsResult.errors) {
 			logger.error("Failed to load extension", { path, error });