add-excel

add-excel is a skill for Claude Code from microsoft/power-platform-skills. It costs 33 tokens per session (813 once invoked), scanned A, original, MIT.

A connector that lets a Power Apps code app read and write tables in Excel workbooks stored in OneDrive or SharePoint. The workbook data must be organized in Excel tables.

In plain words
What is it for?
Use it to retrieve or update tabular Excel data from a workbook in OneDrive or SharePoint.
Why use it?
It avoids manually building a connection to the workbook and helps configure the required file, drive, and table details.

Skill for Claude Code ✓ vendor

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter; names the AskUserQuestion tool.

Part of the code-apps-preview plugin — 14 skills, 1 agent shipped together

About the project

microsoft/power-platform-skills is a plugin marketplace containing reusable skills, agents, and commands for developing with Microsoft Power Platform. Developers use it to build and deploy Power Pages sites, model-driven Power Apps, and related solutions through Claude Code or GitHub Copilot. The catalogue entries are the marketplace's included skills, agents, plugins, and other agent components.

microsoft/power-platform-skills · 829 stars · on GitHub · aka.ms

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/power-platform-skills/add-excel
Any agent
npx skills add microsoft/power-platform-skills --skill add-excel
Clone the repo
git clone --depth 1 https://github.com/microsoft/power-platform-skills

Made for: Claude Code.

Or install code-apps-preview, the plugin that ships this one along with the rest of its 14 skills, 1 agent.

Wrote 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.

agentmods badge for add-excel

README.md
[![agentmods](https://agentmods.dev/badge/skills/microsoft/power-platform-skills/add-excel.svg)](https://agentmods.dev/skills/microsoft/power-platform-skills/add-excel)
Your own site
<a href="https://agentmods.dev/skills/microsoft/power-platform-skills/add-excel"><img src="https://agentmods.dev/badge/skills/microsoft/power-platform-skills/add-excel.svg" alt="Measured on agentmods" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 813 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 5.1 $0.00033 $0.00813
Opus 5 $0.00016 $0.00407
Sonnet 5 $0.00007 $0.00163
Haiku 4.5 $0.00003 $0.00081

Measured 7d ago against content hash 930f31b63abe, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

add-excel 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 7d 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.

plugins/code-apps/skills/add-excel/SKILL.md · 92 lines

How it starts

The opening of the file, as written. The whole thing — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.

📋 Shared Instructions: shared-instructions.md - Cross-cutting concerns.

Add Excel Online

Workflow

  1. Check Memory Bank → 2. Gather → 3. Add Connector → 4. Configure → 5. Build → 6. Update Memory Bank

Step 1: Check Memory Bank

Check for memory-bank.md per shared-instructions.md.

Step 2: Gather

Ask the user:

  1. Where is the workbook? (OneDrive or SharePoint)
  2. Workbook file name
  3. Which table(s) in the workbook to access

Step 3: Add Connector

First, find the connection ID (see connector-reference.md):

Run the /list-connections skill. Find the Excel Online (Business) connection in the output. If none exists, direct the user to create one using the environment-specific Connections URL — construct it from the active environment ID in context (from power.config.json or a prior step): https://make.powerapps.com/environments/<environment-id>/connections+ New connection → search for the connector → Create.

Excel Online is a tabular datasource -- requires -c (connection ID), -d (drive), and --table (table name in workbook):

# OneDrive workbook
pa app add data-source --connector excelonlinebusiness -c <connection-id> -d 'me' --table 'Table1'

# SharePoint workbook -- dataset is the document library path
pa app add data-source --connector excelonlinebusiness -c <connection-id> -d 'sites/your-site' --table 'Table1'

Run for each table the user needs.

Step 4: Configure

AddRowIntoTable -- adds a row to an Excel table:

// OneDrive workbook
await ExcelOnlineBusinessService.AddRowIntoTable({
  source: "me",
  drive: "me",
  file: "MyWorkbook.xlsx",
  table: "Table1",
  body: { column1: "value1", column2: "value2" } // Flat object, NO "items" wrapper
});

// SharePoint workbook
await ExcelOnlineBusinessService.AddRowIntoTable({
  source: "sites/your-site",
  drive: "drive-id",
  file: "SharedWorkbook.xlsx",
  table: "Table1",
  body: { column1: "value1", column2: "value2" }
});

Read the full file on GitHub · 92 lines

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. 7d ago First seen · 92 lines · 33 tokens per session scan A 930f31b63abe

Subscribe to this mod's changes

add-excel is a skill published in the GitHub repository microsoft/power-platform-skills (829 stars, last pushed today), licensed MIT. It adds 33 tokens to every session and 813 once invoked, about $0.0002 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 2026-08-30.

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