diff --git a/src/settings.ts b/src/settings.ts
index 001f001..b648ae3 100644
--- a/src/settings.ts
+++ b/src/settings.ts
@@ -94,6 +94,7 @@ class CollapsibleSection {
 export class ClaudeContextSettingTab extends PluginSettingTab {
 	plugin: ClaudeContextPlugin;
 	private activeTab: SettingsTabId;
+	private searchQuery = '';
 
 	constructor(app: App, plugin: ClaudeContextPlugin) {
 		super(app, plugin);
@@ -105,33 +106,135 @@ export class ClaudeContextSettingTab extends PluginSettingTab {
 		const { containerEl } = this;
 		containerEl.empty();
 
-		// Tab navigation
-		const nav = containerEl.createEl('nav', { cls: 'cc-settings-tabs' });
-		for (const tab of SETTINGS_TABS) {
-			const btn = nav.createEl('button', {
-				text: tab.label,
-				cls: 'cc-settings-tab',
-			});
-			if (tab.id === this.activeTab) {
-				btn.addClass('is-active');
-			}
-			btn.addEventListener('click', async () => {
-				this.activeTab = tab.id;
-				this.plugin.settings.lastSettingsTab = tab.id;
-				await this.plugin.saveSettings();
-				this.display();
-			});
-		}
+		// Search input
+		const searchInput = containerEl.createEl('input', {
+			type: 'text',
+			placeholder: 'Search settings...',
+			cls: 'cc-settings-search-input',
+		});
+		searchInput.value = this.searchQuery;
+
+		searchInput.addEventListener('input', () => {
+			const wasSearching = this.searchQuery.length > 0;
+			this.searchQuery = searchInput.value;
+			const nowSearching = this.searchQuery.length > 0;
+
+			if (wasSearching !== nowSearching) {
+				// Mode transition (tabs ↔ all): re-render and refocus
+				this.display();
+				const refocused = containerEl.querySelector('.cc-settings-search-input') as HTMLInputElement;
+				if (refocused) {
+					refocused.focus();
+					refocused.selectionStart = refocused.selectionEnd = refocused.value.length;
+				}
+			} else if (nowSearching) {
+				this.filterSettings(containerEl);
+			}
+		});
+
+		searchInput.addEventListener('keydown', (e) => {
+			if (e.key === 'Escape' && this.searchQuery) {
+				e.preventDefault();
+				e.stopPropagation();
+				this.searchQuery = '';
+				this.display();
+			}
+		});
 
-		// Tab content
 		const content = containerEl.createDiv({ cls: 'cc-settings-tab-content' });
 
-		switch (this.activeTab) {
-			case 'general': this.renderGeneralTab(content); break;
-			case 'sources': this.renderSourcesTab(content); break;
-			case 'templates': this.renderTemplatesTab(content); break;
-			case 'output': this.renderOutputTab(content); break;
-			case 'history': this.renderHistoryTab(content); break;
+		if (this.searchQuery) {
+			// Search mode: render all tabs with group headings
+			const tabRenderers: { label: string; render: (el: HTMLElement) => void }[] = [
+				{ label: 'General', render: el => this.renderGeneralTab(el) },
+				{ label: 'Sources', render: el => this.renderSourcesTab(el) },
+				{ label: 'Templates', render: el => this.renderTemplatesTab(el) },
+				{ label: 'Output', render: el => this.renderOutputTab(el) },
+				{ label: 'History', render: el => this.renderHistoryTab(el) },
+			];
+
+			for (const tab of tabRenderers) {
+				const group = content.createDiv({ cls: 'cc-settings-search-group' });
+				group.createEl('h4', { text: tab.label, cls: 'cc-settings-search-heading' });
+				tab.render(group);
+			}
+
+			this.filterSettings(content);
+		} else {
+			// Normal mode: tab navigation
+			const nav = containerEl.createEl('nav', { cls: 'cc-settings-tabs' });
+			containerEl.insertBefore(nav, content);
+
+			for (const tab of SETTINGS_TABS) {
+				const btn = nav.createEl('button', {
+					text: tab.label,
+					cls: 'cc-settings-tab',
+				});
+				if (tab.id === this.activeTab) {
+					btn.addClass('is-active');
+				}
+				btn.addEventListener('click', async () => {
+					this.activeTab = tab.id;
+					this.plugin.settings.lastSettingsTab = tab.id;
+					await this.plugin.saveSettings();
+					this.display();
+				});
+			}
+
+			switch (this.activeTab) {
+				case 'general': this.renderGeneralTab(content); break;
+				case 'sources': this.renderSourcesTab(content); break;
+				case 'templates': this.renderTemplatesTab(content); break;
+				case 'output': this.renderOutputTab(content); break;
+				case 'history': this.renderHistoryTab(content); break;
+			}
+		}
+	}
+
+	private filterSettings(content: HTMLElement) {
+		const query = this.searchQuery.toLowerCase();
+
+		// Filter individual setting items by name and description
+		content.querySelectorAll('.setting-item').forEach(el => {
+			const item = el as HTMLElement;
+			const name = (item.querySelector('.setting-item-name')?.textContent ?? '').toLowerCase();
+			const desc = (item.querySelector('.setting-item-description')?.textContent ?? '').toLowerCase();
+			item.style.display = (name.includes(query) || desc.includes(query)) ? '' : 'none';
+		});
+
+		// Force-expand all collapsible sections, hide ones with no visible settings
+		content.querySelectorAll('.cc-section').forEach(el => {
+			const section = el as HTMLElement;
+			section.classList.remove('is-collapsed');
+			const hasVisible = Array.from(section.querySelectorAll('.setting-item'))
+				.some(s => (s as HTMLElement).style.display !== 'none');
+			section.style.display = hasVisible ? '' : 'none';
+		});
+
+		// Hide tab groups with no visible settings
+		let totalVisible = 0;
+		content.querySelectorAll('.cc-settings-search-group').forEach(el => {
+			const group = el as HTMLElement;
+			const visibleCount = Array.from(group.querySelectorAll('.setting-item'))
+				.filter(s => (s as HTMLElement).style.display !== 'none').length;
+			group.style.display = visibleCount > 0 ? '' : 'none';
+			totalVisible += visibleCount;
+		});
+
+		// Show "no results" message
+		let noResults = content.querySelector('.cc-settings-no-results') as HTMLElement;
+		if (totalVisible === 0) {
+			if (!noResults) {
+				noResults = content.createEl('p', {
+					text: `No settings matching "${this.searchQuery}"`,
+					cls: 'cc-settings-no-results',
+				});
+			} else {
+				noResults.textContent = `No settings matching "${this.searchQuery}"`;
+			}
+			noResults.style.display = '';
+		} else if (noResults) {
+			noResults.style.display = 'none';
 		}
 	}
 
diff --git a/styles.css b/styles.css
index 55b3cb7..6bdd10e 100644
--- a/styles.css
+++ b/styles.css
@@ -1,3 +1,46 @@
+/* Settings search */
+.cc-settings-search-input {
+	width: 100%;
+	padding: 8px 12px;
+	margin-bottom: 8px;
+	border: 1px solid var(--background-modifier-border);
+	border-radius: 4px;
+	background: var(--background-primary);
+	color: var(--text-normal);
+	font-size: 14px;
+}
+
+.cc-settings-search-input:focus {
+	border-color: var(--interactive-accent);
+	outline: none;
+}
+
+.cc-settings-search-input::placeholder {
+	color: var(--text-faint);
+}
+
+.cc-settings-search-heading {
+	font-size: 13px;
+	font-weight: 600;
+	color: var(--text-muted);
+	text-transform: uppercase;
+	letter-spacing: 0.05em;
+	margin: 16px 0 8px 0;
+	padding-bottom: 4px;
+	border-bottom: 1px solid var(--background-modifier-border);
+}
+
+.cc-settings-search-group:first-child .cc-settings-search-heading {
+	margin-top: 0;
+}
+
+.cc-settings-no-results {
+	color: var(--text-muted);
+	font-style: italic;
+	text-align: center;
+	padding: 20px 0;
+}
+
 /* Tab navigation for settings */
 .cc-settings-tabs {
 	display: flex;