adding pages back

pages/app-developers/tools/build.mdx

@@ -0,0 +1,25 @@
+---
+title: Build
+lang: en-US
+description: >-
+  Learn about build in the Optimism ecosystem. This guide provides detailed
+  information and resources about build.
+---
+
+import { Card, Cards } from 'nextra/components'
+
+# Build
+
+This section provides information on account abstraction, block explorers, testnet faucets, op mainnet nft tools and oracles. You'll find guide, reference, tool, api to help you understand and work with these topics.
+
+<Cards>
+  <Card title="Account abstraction" href="/builders/tools/build/account-abstraction" />
+
+  <Card title="Block explorers" href="/builders/tools/build/block-explorers" />
+
+  <Card title="Testnet faucets" href="/builders/tools/build/faucets" />
+
+  <Card title="Op mainnet nft tools" href="/builders/tools/build/nft-tools" />
+
+  <Card title="Oracles" href="/builders/tools/build/oracles" />
+</Cards>

pages/app-developers/tools/connect.mdx

@@ -0,0 +1,19 @@
+---
+title: Connect
+lang: en-US
+description: >-
+  Learn about connect in the Optimism ecosystem. This guide provides detailed
+  information and resources about connect.
+---
+
+import { Card, Cards } from 'nextra/components'
+
+# Connect
+
+This section provides information on networks and rpc & node providers. You'll find reference to help you understand and work with these topics.
+
+<Cards>
+  <Card title="Networks" href="/builders/tools/connect/networks" />
+
+  <Card title="Rpc & node providers" href="/builders/tools/connect/rpc-providers" />
+</Cards>

pages/app-developers/tools/monitor.mdx

@@ -0,0 +1,19 @@
+---
+title: Monitor
+lang: en-US
+description: >-
+  Learn about monitor in the Optimism ecosystem. This guide provides detailed
+  information and resources about monitor.
+---
+
+import { Card, Cards } from 'nextra/components'
+
+# Monitor
+
+This section provides information on analytics tools and accessing pre regenesis history. You'll find guide, tool to help you understand and work with these topics.
+
+<Cards>
+  <Card title="Analytics tools" href="/builders/tools/monitor/analytics-tools" />
+
+  <Card title="Accessing pre Regenesis history" href="/builders/tools/monitor/regenesis-history" />
+</Cards>