diff --git a/src/components/NIPBadge.tsx b/src/components/NIPBadge.tsx
index cb9c439..c642787 100644
--- a/src/components/NIPBadge.tsx
+++ b/src/components/NIPBadge.tsx
@@ -1,5 +1,6 @@
 import { getNIPInfo } from "../lib/nip-icons";
 import { useGrimoire } from "@/core/state";
+import { isNipDeprecated } from "@/constants/nips";
 
 export interface NIPBadgeProps {
   nipNumber: string;
@@ -23,6 +24,7 @@ export function NIPBadge({
   const name = nipInfo?.name || `NIP-${nipNumber}`;
   const description =
     nipInfo?.description || `Nostr Implementation Possibility ${nipNumber}`;
+  const isDeprecated = isNipDeprecated(nipNumber);
 
   const openNIP = () => {
     const paddedNum = nipNumber.toString().padStart(2, "0");
@@ -36,8 +38,10 @@ export function NIPBadge({
   return (
     <button
       onClick={openNIP}
-      className={`flex items-center gap-2 border bg-card px-2.5 py-1.5 text-sm hover:underline hover:decoration-dotted cursor-crosshair ${className}`}
-      title={description}
+      className={`flex items-center gap-2 border bg-card px-2.5 py-1.5 text-sm hover:underline hover:decoration-dotted cursor-crosshair ${
+        isDeprecated ? "opacity-50" : ""
+      } ${className}`}
+      title={isDeprecated ? `${description} (DEPRECATED)` : description}
     >
       <span className="text-muted-foreground">
         {`${showNIPPrefix ? "NIP-" : ""}${nipNumber}`}
diff --git a/src/components/NipsViewer.tsx b/src/components/NipsViewer.tsx
new file mode 100644
index 0000000..d5b341e
--- /dev/null
+++ b/src/components/NipsViewer.tsx
@@ -0,0 +1,129 @@
+import { useState, useRef, useEffect } from "react";
+import { Search, X } from "lucide-react";
+import { VALID_NIPS, NIP_TITLES } from "@/constants/nips";
+import { Input } from "@/components/ui/input";
+import { Button } from "@/components/ui/button";
+import { NIPBadge } from "./NIPBadge";
+import { useGrimoire } from "@/core/state";
+
+/**
+ * NipsViewer - Documentation introspection command
+ * Shows all Nostr Implementation Possibilities (NIPs)
+ */
+export default function NipsViewer() {
+  const [search, setSearch] = useState("");
+  const searchInputRef = useRef<HTMLInputElement>(null);
+  const { addWindow } = useGrimoire();
+
+  // Autofocus on mount
+  useEffect(() => {
+    searchInputRef.current?.focus();
+  }, []);
+
+  // Sort NIPs: numeric first (01-99), then hex (7D, A0, etc.)
+  const sortedNips = [...VALID_NIPS].sort((a, b) => {
+    const aIsHex = /^[A-F]/.test(a);
+    const bIsHex = /^[A-F]/.test(b);
+
+    // If both are hex or both are numeric, sort alphabetically
+    if (aIsHex === bIsHex) {
+      return a.localeCompare(b);
+    }
+
+    // Numeric before hex
+    return aIsHex ? 1 : -1;
+  });
+
+  // Filter NIPs by search term (matches NIP number or title)
+  const filteredNips = search
+    ? sortedNips.filter((nipId) => {
+        const title = NIP_TITLES[nipId] || "";
+        const searchLower = search.toLowerCase();
+        return (
+          nipId.toLowerCase().includes(searchLower) ||
+          title.toLowerCase().includes(searchLower)
+        );
+      })
+    : sortedNips;
+
+  // Clear search
+  const handleClear = () => {
+    setSearch("");
+    searchInputRef.current?.focus();
+  };
+
+  // Handle keyboard shortcuts
+  const handleKeyDown = (e: React.KeyboardEvent<HTMLInputElement>) => {
+    if (e.key === "Escape") {
+      handleClear();
+    } else if (e.key === "Enter" && filteredNips.length === 1) {
+      // Open the single result when Enter is pressed
+      const nipId = filteredNips[0];
+      const title = NIP_TITLES[nipId] || `NIP-${nipId}`;
+      addWindow("nip", { number: nipId }, `NIP-${nipId}: ${title}`);
+    }
+  };
+
+  return (
+    <div className="h-full w-full overflow-y-auto p-6">
+      <div className="max-w-3xl mx-auto space-y-6">
+        {/* Header */}
+        <div>
+          <h1 className="text-2xl font-bold mb-2">
+            {search
+              ? `Showing ${filteredNips.length} of ${sortedNips.length} NIPs`
+              : `Nostr Implementation Possibilities (${sortedNips.length})`}
+          </h1>
+          <p className="text-sm text-muted-foreground mb-4">
+            Protocol specifications and extensions for the Nostr network. Click
+            any NIP to view its full specification document.
+          </p>
+
+          {/* Search Input */}
+          <div className="relative">
+            <Search className="absolute left-3 top-1/2 -translate-y-1/2 h-4 w-4 text-muted-foreground pointer-events-none" />
+            <Input
+              ref={searchInputRef}
+              type="text"
+              placeholder="Search NIPs by number or title..."
+              value={search}
+              onChange={(e) => setSearch(e.target.value)}
+              onKeyDown={handleKeyDown}
+              className="pl-9 pr-9"
+            />
+            {search && (
+              <Button
+                variant="ghost"
+                size="sm"
+                onClick={handleClear}
+                className="absolute right-1 top-1/2 -translate-y-1/2 h-7 w-7 p-0 hover:bg-muted"
+                aria-label="Clear search"
+              >
+                <X className="h-4 w-4" />
+              </Button>
+            )}
+          </div>
+        </div>
+
+        {/* NIP List */}
+        {filteredNips.length > 0 ? (
+          <div className="flex flex-col gap-0">
+            {filteredNips.map((nipId) => (
+              <NIPBadge
+                className="border-none"
+                key={nipId}
+                showName
+                nipNumber={nipId}
+              />
+            ))}
+          </div>
+        ) : (
+          <div className="text-center py-12 text-muted-foreground">
+            <p className="text-lg mb-2">No NIPs match "{search}"</p>
+            <p className="text-sm">Try searching for a different term</p>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}
diff --git a/src/components/WindowRenderer.tsx b/src/components/WindowRenderer.tsx
index 42e5767..8827168 100644
--- a/src/components/WindowRenderer.tsx
+++ b/src/components/WindowRenderer.tsx
@@ -12,6 +12,7 @@ import DecodeViewer from "./DecodeViewer";
 import { RelayViewer } from "./RelayViewer";
 import KindRenderer from "./KindRenderer";
 import KindsViewer from "./KindsViewer";
+import NipsViewer from "./NipsViewer";
 import { DebugViewer } from "./DebugViewer";
 import ConnViewer from "./ConnViewer";
 
@@ -98,6 +99,9 @@ export function WindowRenderer({ window, onClose }: WindowRendererProps) {
       case "kinds":
         content = <KindsViewer />;
         break;
+      case "nips":
+        content = <NipsViewer />;
+        break;
       case "man":
         content = <ManPage cmd={window.props.cmd} />;
         break;
diff --git a/src/constants/nips.ts b/src/constants/nips.ts
index f495bd9..4d87190 100644
--- a/src/constants/nips.ts
+++ b/src/constants/nips.ts
@@ -2,6 +2,11 @@
  * List of valid NIPs from https://github.com/nostr-protocol/nips
  * Includes both numeric (01-99) and hexadecimal (7D, A0, etc.) identifiers
  */
+/**
+ * Deprecated NIPs that are no longer recommended for use
+ */
+export const DEPRECATED_NIPS = ["04", "08", "26", "96"] as const;
+
 export const VALID_NIPS = [
   // Numeric NIPs
   "01",
@@ -201,3 +206,7 @@ export function getNipUrl(nipId: string): string {
 export function getNipTitle(nipId: string): string {
   return NIP_TITLES[nipId] || `NIP-${nipId}`;
 }
+
+export function isNipDeprecated(nipId: string): boolean {
+  return DEPRECATED_NIPS.includes(nipId as any);
+}
diff --git a/src/lib/nip-icons.ts b/src/lib/nip-icons.ts
index eec6567..1f0b0c3 100644
--- a/src/lib/nip-icons.ts
+++ b/src/lib/nip-icons.ts
@@ -42,6 +42,7 @@ import {
   Compass,
   Gamepad2,
   type LucideIcon,
+  Signature,
 } from "lucide-react";
 
 export interface NIPInfo {
@@ -54,51 +55,57 @@ export interface NIPInfo {
 
 export const NIP_METADATA: Record<number | string, NIPInfo> = {
   // Core Protocol
-  1: {
+  "01": {
     number: 1,
     name: "Basic Protocol",
     description: "Basic protocol flow description",
     icon: FileText,
   },
-  2: {
+  "02": {
     number: 2,
     name: "Follow List",
     description: "Contact list and petnames",
     icon: Users,
   },
-  4: {
+  "03": {
+    number: 3,
+    name: "OpenTimestamps Attestations for Events",
+    description: "A proof of any event",
+    icon: Signature,
+  },
+  "04": {
     number: 4,
     name: "Encrypted DMs",
     description: "Encrypted direct messages",
     icon: Mail,
     deprecated: true,
   },
-  5: {
+  "05": {
     number: 5,
     name: "Mapping Nostr keys to DNS",
     description: "Mapping Nostr keys to DNS-based internet identifiers",
     icon: Globe,
   },
-  6: {
+  "06": {
     number: 6,
     name: "Key Derivation",
     description: "Basic key derivation from mnemonic seed phrase",
     icon: Key,
   },
-  7: {
+  "07": {
     number: 7,
     name: "window.nostr",
     description: "window.nostr capability for web browsers",
     icon: Globe,
   },
-  8: {
+  "08": {
     number: 8,
     name: "Mentions",
     description: "Handling mentions",
     icon: Tag,
     deprecated: true,
   },
-  9: {
+  "09": {
     number: 9,
     name: "Event Deletion",
     description: "Event deletion",
diff --git a/src/types/app.ts b/src/types/app.ts
index 3cbad4f..d7ee761 100644
--- a/src/types/app.ts
+++ b/src/types/app.ts
@@ -3,7 +3,7 @@ import type { GlobalRelayState } from "./relay-state";
 
 export type AppId =
   | "nip"
-  //| "nips"
+  | "nips"
   | "kind"
   | "kinds"
   | "man"
diff --git a/src/types/man.ts b/src/types/man.ts
index 4b8da44..61e5706 100644
--- a/src/types/man.ts
+++ b/src/types/man.ts
@@ -100,6 +100,18 @@ export const manPages: Record<string, ManPageEntry> = {
     category: "System",
     defaultProps: {},
   },
+  nips: {
+    name: "nips",
+    section: "1",
+    synopsis: "nips",
+    description:
+      "Display all Nostr Implementation Possibilities (NIPs). Shows NIP numbers and titles, with links to view each specification document.",
+    examples: ["nips    View all NIPs"],
+    seeAlso: ["nip", "kinds", "man"],
+    appId: "nips",
+    category: "Documentation",
+    defaultProps: {},
+  },
   // debug: {
   //   name: "debug",
   //   section: "1",