Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add fabioc-aloha/Alex_Skill_Mall --skill teams-app-patternsgit clone --depth 1 https://github.com/fabioc-aloha/Alex_Skill_MallWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/fabioc-aloha/alex_skill_mall/teams-app-patterns)<a href="https://agentmods.dev/skills/fabioc-aloha/alex_skill_mall/teams-app-patterns"><img src="https://agentmods.dev/badge/skills/fabioc-aloha/alex_skill_mall/teams-app-patterns/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/fabioc-aloha/alex_skill_mall/teams-app-patterns"><img src="https://agentmods.dev/badge/skills/fabioc-aloha/alex_skill_mall/teams-app-patterns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00011 | $0.01716 |
| Opus 5 | $0.00005 | $0.00858 |
| Sonnet 5 | $0.00002 | $0.00343 |
| Haiku 4.5 | $0.00001 | $0.00172 |
Grade A, and why
teams-app-patterns scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 203 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Teams App Patterns Skill
Full Teams app development patterns.
⚠️ Staleness Warning
Teams platform evolves rapidly. Last validated: February 13, 2026 (M365 Agents Toolkit CLI 3.1.0, Manifest v1.19, DA v1.6)
Check: Teams Docs, M365 Agents Toolkit, EXTERNAL-API-REGISTRY.md
💡 Use
@m365agentschat participant in VS Code Copilot Chat for scaffolding, schema help, and troubleshooting.
Available MCP Tools
The @m365agents chat participant exposes MCP tools. Use these programmatically before falling back to manual docs:
| Tool | Purpose | Example Use |
|---|---|---|
mcp_m365agentstoo_get_schema |
Get current manifest schemas | Validate app manifest (v1.19), DA manifest (v1.0), API plugin (v2.1), M365 agents YAML |
mcp_m365agentstoo_get_code_snippets |
Working code samples | Teams AI library, Teams JS SDK, botbuilder patterns |
mcp_m365agentstoo_get_knowledge |
Development knowledge base | Copilot extensibility, capabilities, best practices |
mcp_m365agentstoo_troubleshoot |
Diagnose issues | Sideloading, conditional access, schema errors |
When to use: Any M365/Teams development task — call the relevant MCP tool first, then supplement with skill knowledge.
⚠️ Critical: Declarative Agent v1.6 Schema
declarativeAgent.json for M365 Copilot agents has specific schema requirements:
| Field | Wrong (Pre-v1.6) | Correct (v1.6) |
|---|---|---|
disclaimer |
"text string" |
{ "text": "..." } |
behavior_overrides.suggestions |
false |
{ "disabled": false } |
behavior_overrides.special_instructions |
"text string" |
{ "discourage_model_knowledge": false } |
user_overrides |
{ "capabilities": [...] } |
[ { "path": "$.capabilities[?(@.name=='X')]", "allowed_actions": ["remove"] } ] |
CLI Version Matters:
- v2.x:
--app-package-fileflag, may NOT include declarativeAgent.json in zip (bug) - v3.x:
--package-fileflag, correctly includes declarativeAgent.json
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 8d ago First seen · 203 lines · 11 tokens per session scan A feb48e6bd15b
teams-app-patterns is a skill published in the GitHub repository fabioc-aloha/Alex_Skill_Mall (4 stars, last pushed today), licensed MIT. It adds 11 tokens to every session and 1,716 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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