declarative-agent-developer

A development guide for Microsoft 365 Copilot and Teams declarative agents. These are agents defined largely through configuration files, including manifests and language files.

In plain words
What is it for?
Use it to scaffold agents, edit manifests, add capabilities, translate them into other languages, build them, and deploy them.
Why use it?
It brings creation, editing, localization, building, and deployment into one workflow. It also explains the special file structure needed for localized agents.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/microsoft/work-iq/declarative-agent-developer
Any agent
npx skills add microsoft/work-iq --skill declarative-agent-developer
Clone the repo
git clone --depth 1 https://github.com/microsoft/work-iq

Made for: Claude Code, Codex.

Per session 187 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,978 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00187 $0.02978
Opus 5 $0.00093 $0.01489
Sonnet 5 $0.00037 $0.00596
Haiku 4.5 $0.00019 $0.00298

Measured 2d ago against content hash 13d2af8dd44c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

declarative-agent-developer scanned grade B with 1 finding 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 2d 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.

Unrestricted tool accessmediumExcessive agency

A wildcard tool grant or "run any command" leaves no least-privilege boundary at all.

2. **NEVER create files in a non-agent project.** If the workspace is an Express/React/Django/etc. app without `appPackage/`, your response must be text-only. Do NOT create any files, do NOT run any commands.
plugins/microsoft-365-agents-toolkit/skills/declarative-agent-developer/SKILL.md · 194 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

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.

  1. 2d ago First seen · 194 lines · 187 tokens per session scan B 13d2af8dd44c

Subscribe to this mod's changes

declarative-agent-developer is a skill published in the GitHub repository microsoft/work-iq (982 stars, last pushed 4d ago), with no licence file. It adds 187 tokens to every session and 2,978 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it B with 1 finding (unrestricted tool access). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

zh-output-example

Reviews Chinese skill documentation for publication readiness. Invoke when the user asks in Chinese to review a skill.

bytedance/deer-flow · 24 tokens

i18n-localization

Internationalization and localization patterns. Detecting hardcoded strings, managing translations, locale files, RTL support.

vudovn/ag-kit · 27 tokens

seedance-vocab-ja

This skill should be used when the user asks for Japanese Seedance 2.0 prompt wording, Japanese cinematic vocabulary, or translation of camera, lighting, action, VFX, audio, and production terms into Japanese.

Emily2040/seedance-2.0 · 50 tokens

asc-subscription-localization

Bulk-localize subscription, subscription-group, and in-app purchase display names across App Store locales using asc, including API 4.4.1 version-scoped v2 resources. Use when filling or updating subscription/IAP names and descriptions without App Store Connect UI work.

rorkai/app-store-connect-cli-skills · 60 tokens

harden

Improve interface resilience through better error handling, i18n support, text overflow handling, and edge case management. Makes interfaces robust and production-ready.

childrentime/reactuse · 32 tokens

subtitle-translator

Translate subtitle files (SRT, ASS) and video/media with embedded subtitles into any target language with high linguistic quality, sliding context window, timestamp alignment, and formatting preservation. Use when the user asks to translate a subtitle file (.srt, .ass) or video subtitles.

MaKTaiL/gemini-srt-translator · 60 tokens