diff --git a/Requests/.vscode/settings.json b/Requests/.vscode/settings.json
new file mode 100644
index 0000000..28241c5
--- /dev/null
+++ b/Requests/.vscode/settings.json
@@ -0,0 +1,9 @@
+{
+    "rest-client.environmentVariables": {
+        "$shared": {
+            "api": "https://localhost:6001",
+            "tenant": "https://localhost:5001",
+            "audience": "urn:calcapi"
+        }
+    }
+}
diff --git a/Requests/0_Basics/1_requests.http b/Requests/0_Basics/1_requests.http
new file mode 100644
index 0000000..45d8857
--- /dev/null
+++ b/Requests/0_Basics/1_requests.http
@@ -0,0 +1,23 @@
+##########
+#
+# Basics (Metadata)
+#
+##########
+
+
+# OpenID Provider Configuration Request
+# https://openid.net/specs/openid-connect-discovery-1_0.html
+#
+# @name configuration
+GET {{tenant}}/.well-known/openid-configuration
+
+###
+
+@jwks_uri = {{configuration.response.body.$.jwks_uri}}
+
+# JSON Web Key Set document
+# https://tools.ietf.org/html/draft-ietf-jose-json-web-key-31
+#
+# @name jwks
+
+GET {{jwks_uri}}
diff --git a/Requests/1_Client_Credentials_Grant/1_requests.http b/Requests/1_Client_Credentials_Grant/1_requests.http
new file mode 100644
index 0000000..f81c995
--- /dev/null
+++ b/Requests/1_Client_Credentials_Grant/1_requests.http
@@ -0,0 +1,49 @@
+##########
+#
+# Client Credentials Grant
+#
+# https://datatracker.ietf.org/doc/html/rfc6749#section-4.4
+#
+##########
+
+
+#####
+# Configuration --> use Client Credentials Grant
+
+@client_id= worker
+@client_secret = secret
+@scope = calc:double
+
+#
+#####
+
+
+# Get Access Token for Client (double-only)
+# @name token 
+POST {{tenant}}/connect/token
+Content-Type: application/x-www-form-urlencoded
+
+grant_type=client_credentials
+&client_id={{client_id}}
+&client_secret={{client_secret}}
+&scope={{scope}}
+
+###
+# @name double
+
+@access_token = {{token.response.body.$.access_token}}
+
+# Call API
+GET {{api}}/Double/2
+Authorization: Bearer {{access_token}}
+
+
+###
+# @name square
+
+@access_token = {{token.response.body.$.access_token}}
+
+# Call API
+GET {{api}}/Square/2
+Authorization: Bearer {{access_token}}
+
diff --git a/Requests/6_Authorization_Code_with_PKCE/1_requests.http b/Requests/6_Authorization_Code_with_PKCE/1_requests.http
new file mode 100644
index 0000000..db93d83
--- /dev/null
+++ b/Requests/6_Authorization_Code_with_PKCE/1_requests.http
@@ -0,0 +1,44 @@
+##########
+#
+# Authorization Code Grant with PKCE
+#
+# https://datatracker.ietf.org/doc/html/rfc6749#section-1.3.1
+# https://www.rfc-editor.org/rfc/rfc7636.html
+#
+##########
+
+
+#####
+# Configuration --> use Authorization Code Grant with PKCE
+# generate custom code_challenge and code_verifier with auth-code-pkce.js
+
+@client_id= web
+@client_secret = secret
+@redirect_uri = https://localhost:5002/signin-oidc
+@code_challenge = JiCfjR0ceTNiBRcxghqjnWxBwRl9o2B7ogdxpGl2tDw
+@code_verifier = aj1cBUxqDQvrueJKvr-taJkWPpmuodt-kqX5Z4KukSM
+@scope = openid email profile offline_access calc:double
+#
+#####
+
+
+# Authorize 
+GET {{tenant}}/connect/authorize?state=l337&redirect_uri={{redirect_uri}}&code_challenge_method=S256&code_challenge={{code_challenge}}&client_id={{client_id}}&response_type=code&scope={{scope}}&audience={{audience}}&prompt=consent
+
+###
+
+# Get access and refresh token
+# @name token
+
+@code = 892A6B9BB1FF2BD98A79A3E595548C687E1B8098DBA64B0E3F1DC5E183FBD154-1
+
+
+POST {{tenant}}/connect/token
+Content-Type: application/x-www-form-urlencoded
+
+grant_type=authorization_code
+&client_id={{client_id}}
+&client_secret={{client_secret}}
+&code_verifier={{code_verifier}}
+&code={{code}}
+&redirect_uri={{redirect_uri}}
diff --git a/Requests/7_Device_Flow/1_requests.http b/Requests/7_Device_Flow/1_requests.http
new file mode 100644
index 0000000..3a836d4
--- /dev/null
+++ b/Requests/7_Device_Flow/1_requests.http
@@ -0,0 +1,74 @@
+##########
+#
+# Device Authorization Grant
+#
+# https://datatracker.ietf.org/doc/html/rfc8628
+#
+##########
+
+
+#####
+# Configuration --> use Device Code Grant
+
+@client_id = device
+@client_secret = secret
+@scope = openid email profile offline_access calc:double
+@resource = urn:calcapi
+
+#
+#####
+
+# Get Device Code
+# @name devicecode
+
+POST {{tenant}}/connect/deviceauthorization
+Content-Type: application/x-www-form-urlencoded
+
+client_id={{client_id}}
+&client_secret={{client_secret}}
+&scope={{scope}}
+&resource={{resource}}
+
+
+###
+
+@device_code = {{devicecode.response.body.$.device_code}}
+@user_code = {{devicecode.response.body.$.user_code}}
+
+# Get Token
+# @name token
+
+POST {{tenant}}/connect/token
+Content-Type: application/x-www-form-urlencoded
+
+grant_type=urn:ietf:params:oauth:grant-type:device_code
+&client_id={{client_id}}
+&client_secret={{client_secret}}
+&device_code={{device_code}}
+
+###
+
+@access_token = {{token.response.body.$.access_token}}
+@id_token = {{token.response.body.$.id_token}}
+
+# Get Userinfo with identity token
+GET {{tenant}}/connect/userinfo
+Authorization: Bearer {{access_token}}
+
+###
+
+# Double Calucator API
+GET https://localhost:6001/Double/3
+Authorization: Bearer {{access_token}}
+
+###
+
+# Square Calucator API
+GET https://localhost:6001/Square/3
+Authorization: Bearer {{access_token}}
+
+###
+
+# Tokeninfo Calucator API
+GET http://localhost:5001/api/tokeninfo
+Authorization: Bearer {{access_token}}
diff --git a/Requests/README.md b/Requests/README.md
new file mode 100644
index 0000000..60b976e
--- /dev/null
+++ b/Requests/README.md
@@ -0,0 +1,12 @@
+# OAuth / OpenID Connect Sample Requests
+
+## Prerequisites
+
+- [Visual Studio Code](https://code.visualstudio.com)
+- [REST Client](https://marketplace.visualstudio.com/items?itemName=humao.rest-client)
+
+## Usage
+
+- Customize configuration settings in [.vscode\settings.json](.vscode/settings.json)
+- Start IdentityServer in [IdentityServer](../src/IdentityServerUi)]
+- Start Calculator API in [CalcApi](../src/CalcApi)
diff --git a/Requests/helpers/.gitignore b/Requests/helpers/.gitignore
new file mode 100644
index 0000000..7d00161
--- /dev/null
+++ b/Requests/helpers/.gitignore
@@ -0,0 +1,76 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# next.js build output
+.next
+
+# nuxt.js build output
+.nuxt
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless
+
+# FuseBox cache
+.fusebox/
\ No newline at end of file
diff --git a/Requests/helpers/auth-code-pkce/.devcontainer/devcontainer.json b/Requests/helpers/auth-code-pkce/.devcontainer/devcontainer.json
new file mode 100644
index 0000000..9662c3e
--- /dev/null
+++ b/Requests/helpers/auth-code-pkce/.devcontainer/devcontainer.json
@@ -0,0 +1,22 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/typescript-node
+{
+	"name": "Node.js & TypeScript",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"image": "mcr.microsoft.com/devcontainers/typescript-node:0-20"
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "yarn install",
+
+	// Configure tool-specific properties.
+	// "customizations": {},
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}
diff --git a/Requests/helpers/auth-code-pkce/.github/dependabot.yml b/Requests/helpers/auth-code-pkce/.github/dependabot.yml
new file mode 100644
index 0000000..3a3cce5
--- /dev/null
+++ b/Requests/helpers/auth-code-pkce/.github/dependabot.yml
@@ -0,0 +1,11 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "npm" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"
diff --git a/Requests/helpers/auth-code-pkce/.github/workflows/codeql-analysis.yml b/Requests/helpers/auth-code-pkce/.github/workflows/codeql-analysis.yml
new file mode 100644
index 0000000..6e4d100
--- /dev/null
+++ b/Requests/helpers/auth-code-pkce/.github/workflows/codeql-analysis.yml
@@ -0,0 +1,74 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "main" ]
+  schedule:
+    - cron: '20 17 * * 5'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'javascript' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
+        # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v2
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+        
+        # Details on CodeQL's query packs refer to : https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
+        # queries: security-extended,security-and-quality
+
+        
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v2
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
+
+    #   If the Autobuild fails above, remove it and uncomment the following three lines. 
+    #   modify them (or add more) to build your code if your project, please refer to the EXAMPLE below for guidance.
+
+    # - run: |
+    #   echo "Run, Build Application using script"
+    #   ./location_of_script_within_repo/buildscript.sh
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v2
+      with:
+        category: "/language:${{matrix.language}}"
diff --git a/Requests/helpers/auth-code-pkce/.gitignore b/Requests/helpers/auth-code-pkce/.gitignore
new file mode 100644
index 0000000..7d00161
--- /dev/null
+++ b/Requests/helpers/auth-code-pkce/.gitignore
@@ -0,0 +1,76 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# next.js build output
+.next
+
+# nuxt.js build output
+.nuxt
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless
+
+# FuseBox cache
+.fusebox/
\ No newline at end of file
diff --git a/Requests/helpers/auth-code-pkce/auth-code-pkce.js b/Requests/helpers/auth-code-pkce/auth-code-pkce.js
new file mode 100644
index 0000000..089f310
--- /dev/null
+++ b/Requests/helpers/auth-code-pkce/auth-code-pkce.js
@@ -0,0 +1,15 @@
+const crypto = require('crypto');
+const base64url = require('base64url');
+
+var code_verifier = randomString();
+
+var hash = crypto.createHash('sha256').update(code_verifier).digest();
+var code_challenge = base64url.encode(hash)
+
+console.log(`code challenge: ${code_challenge}`);
+console.log(`code verifier:  ${code_verifier}`);
+
+/** @returns {string} crypto-generated base64 string */
+function randomString() {
+    return base64url.encode(crypto.randomBytes(32))
+}
\ No newline at end of file
diff --git a/Requests/helpers/auth-code-pkce/package-lock.json b/Requests/helpers/auth-code-pkce/package-lock.json
new file mode 100644
index 0000000..531ac8a
--- /dev/null
+++ b/Requests/helpers/auth-code-pkce/package-lock.json
@@ -0,0 +1,24 @@
+{
+  "name": "auth-code-pkce",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "auth-code-pkce",
+      "version": "1.0.0",
+      "license": "MIT",
+      "dependencies": {
+        "base64url": "^3.0.1"
+      }
+    },
+    "node_modules/base64url": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/base64url/-/base64url-3.0.1.tgz",
+      "integrity": "sha512-ir1UPr3dkwexU7FdV8qBBbNDRUhMmIekYMFZfi+C/sLNnRESKPl23nB9b2pltqfOQNnGzsDdId90AEtG5tCx4A==",
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    }
+  }
+}
diff --git a/Requests/helpers/auth-code-pkce/package.json b/Requests/helpers/auth-code-pkce/package.json
new file mode 100644
index 0000000..c71102b
--- /dev/null
+++ b/Requests/helpers/auth-code-pkce/package.json
@@ -0,0 +1,19 @@
+{
+  "name": "auth-code-pkce",
+  "version": "1.0.0",
+  "description": "PKCE utility for OAuth 2.0 authorization code grant",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [
+    "oauth2",
+    "oidc",
+    "pkce",
+    "authorization code"
+  ],
+  "author": "Daniel Wagner <daniel@danielwagner.at>",
+  "license": "MIT",
+  "dependencies": {
+    "base64url": "^3.0.1"
+  }
+}