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Agent skill

Outlook API

by CraftOS-dev in CraftOS-dev/CraftBot

Microsoft Outlook API integration with managed OAuth. An agent skill from CraftOS-dev/CraftBot.

MITAuto-check passedBackend & APIs

Install Outlook API

skills CLI
$ npx skills add CraftOS-dev/CraftBot --skill outlook-api -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install CraftOS-dev/CraftBot outlook-api --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/CraftOS-dev/CraftBot.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/outlook-api .claude/skills/outlook-api && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
outlook-api
GitHub stars
392
Token cost
~2.6k tokens
SKILL.md length
430 words
Files
4
Skills in repo
89
Repo updated
First seen
Licence
MIT

At a glance

Microsoft Outlook API integration with managed OAuth. An agent skill from CraftOS-dev/CraftBot.

  • Works in 3 steps: Sign in or create an account at maton.ai → Go to maton.ai/settings → Copy your API key
  • Users want to interact with Outlook
  • SKILL.md covers Quick Start, Base URL, Authentication and Connection Management, plus 6 more sections
  • Calls python and curl; reaches gateway.maton.ai and ctrl.maton.ai; needs MATON_API_KEY

What it does

Outlook API is an agent skill from CraftOS-dev/CraftBot. Microsoft Outlook API integration with managed OAuth. Read, send, and manage emails, folders, calendar events, and contacts via Microsoft Graph. Use this skill when users want to interact with Outlook. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway).

Its SKILL.md is about 2.6k tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files (for example `.clawhub/origin.json` and `_meta.json`). Compatibility notes: Requires network access and valid Maton API key

It sits in Backend & APIs, covering Microservices, Third-party API integration and OAuth and OpenID Connect. It works with Microsoft 365 and Microsoft Outlook. The repository describes itself as: One agent. Every kind of work. The licence is MIT.

When your agent uses it

  • Users want to interact with Outlook
  • Tasks that involve Microservices
  • Tasks that involve Third-party API integration

Example prompts

  • “/outlook-api”

Requirements

  • Python 3
  • A credential in MATON_API_KEY
  • A credential in YOUR_API_KEY
  • Compatibility (from SKILL.md): Requires network access and valid Maton API key

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Sign in or create an account at maton.ai
  2. Go to maton.ai/settings
  3. Copy your API key

What it can do on your machine

Read from SKILL.md and the folder at commit b50970c. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • python
    • curl

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • gateway.maton.ai
    • ctrl.maton.ai
    • connect.maton.ai

    Also links to:

    • learn.microsoft.com
    • maton.ai
    • discord.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • MATON_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Requires network access and valid Maton API key

    From compatibility in the SKILL.md frontmatter.

Context cost

Outlook API loads about 2.6k tokens when it runs. Until then it costs about 78 tokens; SKILL.md has 430 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~78
When it runs · the whole SKILL.md, loaded when a task matches
~2.6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from CraftOS-dev/CraftBot at commit b50970c, republished under its MIT licence (© CraftOS-dev). 430 words, ~2,595 tokens.

Download SKILL.mdSave it as .claude/skills/outlook-api/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
outlook-api
description
Microsoft Outlook API integration with managed OAuth. Read, send, and manage emails, folders, calendar events, and contacts via Microsoft Graph. Use this skill when users want to interact with Outlook. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway).
compatibility
Requires network access and valid Maton API key
metadata.author
maton
metadata.version
1.0

Outlook

Access the Microsoft Outlook API (via Microsoft Graph) with managed OAuth authentication. Read, send, and manage emails, folders, calendar events, and contacts.

Quick Start

bash
# Get user profile
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/outlook/v1.0/me')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Base URL

https://gateway.maton.ai/outlook/{native-api-path}

Replace {native-api-path} with the actual Microsoft Graph API endpoint path. The gateway proxies requests to graph.microsoft.com and automatically injects your OAuth token.

Authentication

All requests require the Maton API key in the Authorization header:

Authorization: Bearer $MATON_API_KEY

Environment Variable: Set your API key as MATON_API_KEY:

bash
export MATON_API_KEY="YOUR_API_KEY"
Getting Your API Key
  1. Sign in or create an account at maton.ai
  2. Go to maton.ai/settings
  3. Copy your API key

Connection Management

Manage your Microsoft OAuth connections at https://ctrl.maton.ai.

List Connections
bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections?app=outlook&status=ACTIVE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF
Create Connection
bash
python <<'EOF'
import urllib.request, os, json
data = json.dumps({'app': 'outlook'}).encode()
req = urllib.request.Request('https://ctrl.maton.ai/connections', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF
Get Connection
bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Response:

json
{
  "connection": {
    "connection_id": "21fd90f9-5935-43cd-b6c8-bde9d915ca80",
    "status": "ACTIVE",
    "creation_time": "2025-12-08T07:20:53.488460Z",
    "last_updated_time": "2026-01-31T20:03:32.593153Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "outlook",
    "metadata": {}
  }
}

Open the returned url in a browser to complete OAuth authorization.

Delete Connection
bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}', method='DELETE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF
Specifying Connection

If you have multiple Outlook connections, specify which one to use with the Maton-Connection header:

bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/outlook/v1.0/me')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Maton-Connection', '21fd90f9-5935-43cd-b6c8-bde9d915ca80')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

If omitted, the gateway uses the default (oldest) active connection.

API Reference

User Profile
bash
GET /outlook/v1.0/me
Mail Folders
List Mail Folders
bash
GET /outlook/v1.0/me/mailFolders
Get Mail Folder
bash
GET /outlook/v1.0/me/mailFolders/{folderId}

Well-known folder names: Inbox, Drafts, SentItems, DeletedItems, Archive, JunkEmail

Create Mail Folder
bash
POST /outlook/v1.0/me/mailFolders
Content-Type: application/json

{
  "displayName": "My Folder"
}
Delete Mail Folder
bash
DELETE /outlook/v1.0/me/mailFolders/{folderId}
List Child Folders
bash
GET /outlook/v1.0/me/mailFolders/{folderId}/childFolders
Messages
List Messages
bash
GET /outlook/v1.0/me/messages

From specific folder:

bash
GET /outlook/v1.0/me/mailFolders/Inbox/messages

With query filter:

bash
GET /outlook/v1.0/me/messages?$filter=isRead eq false&$top=10
Get Message
bash
GET /outlook/v1.0/me/messages/{messageId}
Create Draft
bash
POST /outlook/v1.0/me/messages
Content-Type: application/json

{
  "subject": "Hello",
  "body": {
    "contentType": "Text",
    "content": "This is the email body."
  },
  "toRecipients": [
    {
      "emailAddress": {
        "address": "recipient@example.com"
      }
    }
  ]
}
Send Message
bash
POST /outlook/v1.0/me/sendMail
Content-Type: application/json

{
  "message": {
    "subject": "Hello",
    "body": {
      "contentType": "Text",
      "content": "This is the email body."
    },
    "toRecipients": [
      {
        "emailAddress": {
          "address": "recipient@example.com"
        }
      }
    ]
  },
  "saveToSentItems": true
}
Send Existing Draft
bash
POST /outlook/v1.0/me/messages/{messageId}/send
Update Message
bash
PATCH /outlook/v1.0/me/messages/{messageId}
Content-Type: application/json

{
  "isRead": true
}
Delete Message
bash
DELETE /outlook/v1.0/me/messages/{messageId}
Move Message
bash
POST /outlook/v1.0/me/messages/{messageId}/move
Content-Type: application/json

{
  "destinationId": "{folderId}"
}
Calendar
List Calendars
bash
GET /outlook/v1.0/me/calendars
List Events
bash
GET /outlook/v1.0/me/calendar/events

With date filter:

bash
GET /outlook/v1.0/me/calendar/events?$filter=start/dateTime ge '2024-01-01'&$top=10
Get Event
bash
GET /outlook/v1.0/me/events/{eventId}
Create Event
bash
POST /outlook/v1.0/me/calendar/events
Content-Type: application/json

{
  "subject": "Meeting",
  "start": {
    "dateTime": "2024-01-15T10:00:00",
    "timeZone": "UTC"
  },
  "end": {
    "dateTime": "2024-01-15T11:00:00",
    "timeZone": "UTC"
  },
  "attendees": [
    {
      "emailAddress": {
        "address": "attendee@example.com"
      },
      "type": "required"
    }
  ]
}
Delete Event
bash
DELETE /outlook/v1.0/me/events/{eventId}
Contacts
List Contacts
bash
GET /outlook/v1.0/me/contacts
Get Contact
bash
GET /outlook/v1.0/me/contacts/{contactId}
Create Contact
bash
POST /outlook/v1.0/me/contacts
Content-Type: application/json

{
  "givenName": "John",
  "surname": "Doe",
  "emailAddresses": [
    {
      "address": "john.doe@example.com"
    }
  ]
}
Delete Contact
bash
DELETE /outlook/v1.0/me/contacts/{contactId}

Query Parameters

Use OData query parameters:

  • $top=10 - Limit results
  • $skip=20 - Skip results (pagination)
  • $select=subject,from - Select specific fields
  • $filter=isRead eq false - Filter results
  • $orderby=receivedDateTime desc - Sort results
  • $search="keyword" - Search content

Code Examples

JavaScript
javascript
const response = await fetch(
  'https://gateway.maton.ai/outlook/v1.0/me/messages?$top=10',
  {
    headers: {
      'Authorization': `Bearer ${process.env.MATON_API_KEY}`
    }
  }
);
Python
python
import os
import requests

response = requests.get(
    "https://gateway.maton.ai/outlook/v1.0/me/messages",
    headers={"Authorization": f"Bearer {os.environ['MATON_API_KEY']}"},
    params={"$top": 10, "$filter": "isRead eq false"},
)
Show full SKILL.md (173 more words)Show less

Notes

  • Use me as the user identifier for the authenticated user
  • Message body content types: Text or HTML
  • Well-known folder names work as folder IDs: Inbox, Drafts, SentItems, etc.
  • Calendar events use ISO 8601 datetime format
  • IMPORTANT: When using curl commands, use curl -g when URLs contain brackets (fields[], sort[], records[]) to disable glob parsing
  • IMPORTANT: When piping curl output to jq or other commands, environment variables like $MATON_API_KEY may not expand correctly in some shell environments. You may get "Invalid API key" errors when piping.

Error Handling

StatusMeaning
400Missing Outlook connection
401Invalid or missing Maton API key
429Rate limited (10 req/sec per account)
4xx/5xxPassthrough error from Microsoft Graph API
Troubleshooting: API Key Issues
  1. Check that the MATON_API_KEY environment variable is set:
bash
echo $MATON_API_KEY
  1. Verify the API key is valid by listing connections:
bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF
Troubleshooting: Invalid App Name
  1. Ensure your URL path starts with outlook. For example:
  • Correct: https://gateway.maton.ai/outlook/v1.0/me/messages
  • Incorrect: https://gateway.maton.ai/v1.0/me/messages

Resources

© CraftOS-dev, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files in skills/outlook-api of CraftOS-dev/CraftBot.

  • SKILL.md
  • .clawhub/origin.json
  • LICENSE.txt
  • _meta.json

Open the folder on GitHubat commit b50970c

Compare with similar skills

Outlook API next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Outlook API compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Outlook API this skillCraftOS-dev/CraftBot392—~2.6kAutomated safety check: PassMIT
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Acuity SchedulingLeoYeAI/openclaw-master-skills2.2k—~4.1kAutomated safety check: PassMIT
BrevoLeoYeAI/openclaw-master-skills2.2k—~4.8kAutomated safety check: PassMIT
ClickfunnelsLeoYeAI/openclaw-master-skills2.2k—~4.2kAutomated safety check: PassMIT

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Works with

Categories

Questions about Outlook API

What does Outlook API do?

Microsoft Outlook API integration with managed OAuth. An agent skill from CraftOS-dev/CraftBot. Outlook API is an agent skill from CraftOS-dev/CraftBot. Microsoft Outlook API integration with managed OAuth.

When should I use Outlook API?

Outlook API fits situations like: users want to interact with Outlook; tasks that involve Microservices; tasks that involve Third-party API integration.

How do I install Outlook API in Claude Code?

Run `npx skills add CraftOS-dev/CraftBot --skill outlook-api -a claude-code`. Or copy the skill folder (skills/outlook-api in CraftOS-dev/CraftBot) into .claude/skills/outlook-api in your project. Claude Code loads it when a task matches its description.

How do I install Outlook API in Codex?

Run `npx skills add CraftOS-dev/CraftBot --skill outlook-api -a codex`. Or copy the skill folder (skills/outlook-api in CraftOS-dev/CraftBot) into .agents/skills/outlook-api in your project. Codex loads it when a task matches its description.

Can I use Outlook API in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add CraftOS-dev/CraftBot --skill outlook-api -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/outlook-api, .gemini/skills/outlook-api, .github/skills/outlook-api and .opencode/skills/outlook-api in your project.

What does Outlook API need to run?

Going by SKILL.md and its folder, Outlook API needs the command-line tools its instructions call (python and curl) and credentials named MATON_API_KEY. Our summary lists: Python 3; A credential in MATON_API_KEY; A credential in YOUR_API_KEY. Compatibility (from SKILL.md): Requires network access and valid Maton API key.

Does Outlook API access the network?

SKILL.md names 6 domains. In commands or code: gateway.maton.ai, ctrl.maton.ai and connect.maton.ai; the agent is likely to contact these when it follows the instructions. As links in the text: learn.microsoft.com, maton.ai and discord.com. This is read from the text; nothing was executed.

Is Outlook API safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Outlook API use?

Outlook API is published under the MIT licence (from the LICENSE file in the skill folder). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Outlook API use?

About 2.6k tokens (SKILL.md is roughly 10k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Outlook API?

Skills that share tags, products or a category with Outlook API: One Note (LeoYeAI/openclaw-master-skills, 2.2k stars), Active Campaign (LeoYeAI/openclaw-master-skills, 2.2k stars), Acuity Scheduling (LeoYeAI/openclaw-master-skills, 2.2k stars) and Brevo (LeoYeAI/openclaw-master-skills, 2.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Outlook API?

CraftOS-dev (a GitHub user) maintains it in CraftOS-dev/CraftBot, which has 392 GitHub stars. The repository holds 89 skills in this directory. The repository was last updated on October 7, 2026.

Source: CraftOS-dev/CraftBot on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.