Evo Pptx Embedded Update

Community

Zhang-Henry

evo-pptx-embedded-update

Surgically update a single cell in an embedded Excel workbook inside a PPTX file, driven by a text-box instruction on the slide. Recalculates cached values for dependent formula cells. Discovers all structure at runtime. Preserves formulas, styles, and package integrity.

Overview

Publisher	Zhang-Henry
Repository	`CoEvoSkills`
Skill name	`evo-pptx-embedded-update`
Stars	83
Forks	9
Bundled files	1
License	Apache-2.0
Links	Skill source Repository Homepage

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
1 bundled files
Scripts, templates, and references the model can read while it works. Files are read-only and never executed.
Open source
Published by Zhang-Henry on GitHub. Read the source before you install it.

Installation

Install the Evo Pptx Embedded Update AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/Zhang-Henry/CoEvoSkills/tree/main/artifacts/skills/exceltable-in-ppt/evo-pptx-embedded-update
Enable the skill in any chat where you want it available.

Store

Installed

Skills

Add skills

Import one or more skills from a public GitHub folder or a local .skill or .zip archive, or SKILL.md file.

From GitHub URLFrom .skill, .zip, or SKILL.md

GitHub repo or folder

https://github.com/Zhang-Henry/CoEvoSkills/tree/main/artifacts/skills/exceltable-in-ppt/evo-pptx-embedded-update

Points to a single skill folder, or any folder that contains multiple skills. Public repos only.

CancelContinue

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/Zhang-Henry/CoEvoSkills.git /tmp/CoEvoSkills
mkdir -p .claude/skills
cp -r /tmp/CoEvoSkills/artifacts/skills/exceltable-in-ppt/evo-pptx-embedded-update .claude/skills/evo-pptx-embedded-update

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Evo Pptx Embedded Update in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Evo Pptx Embedded Update on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Evo Pptx Embedded Update is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Embedded Workbook Update in PPTX

Updates one value cell in an embedded Excel workbook inside a PowerPoint file. The update instruction is read from a text-box shape on the slide. All structure (embedded path, worksheet, target cell) is discovered at runtime. Formula cells are kept as formulas but their cached results are recalculated to reflect the new value.

End-to-End Example

The caller sets input_pptx and output_pptx to the paths given by the task instruction.

python
import sys
sys.path.insert(0, '/app/environment/skills/evo-pptx-embedded-update/scripts')
from utils import run_end_to_end, validate

input_pptx = '<path from task instruction>'
output_pptx = '<path from task instruction>'

result = run_end_to_end(input_pptx, output_pptx)
validate(output_pptx,
         result['from_currency'],
         result['to_currency'],
         result['new_rate'])

Functions

Function	Purpose
`scan_textboxes(p)`	Collect text from every text-frame shape
`parse_update_instruction(t)`	Extract (from, to, value) from free text
`locate_embedded_xlsx(p)`	Find the embedded xlsx archive entry
`find_matrix_cell(xb, rl, cl)`	Locate a cell by header matching
`update_embedded_value(ip, op, fl, tl, v)`	Surgical edit with cache refresh
`run_end_to_end(ip, op)`	Full pipeline
`validate(op, fl, tl, r)`	Post-hoc integrity check

Approach

Surgical XML edit — the target cell's <v> text is replaced in the raw XML string. Formula cells that transitively depend on the changed cell have their cached <v> values recalculated.
Formula preservation — <f> elements are never removed or altered; only <v> cached results are refreshed.
ZIP preservation — every other entry in both the xlsx and pptx archives is copied with original compression, timestamps, and attrs.
Value formats — user-entered values use repr() (shortest round-trip decimal); cached formula results use %.17g (full IEEE 754 precision), matching OOXML conventions.
Safe evaluation — formula evaluation supports ROUND() and basic arithmetic via validated expression parsing; unsupported formulas leave cached values unchanged.

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

scripts/utils.py12 KB

Frequently asked questions

What does the Evo Pptx Embedded Update AI skill do?

Why use Evo Pptx Embedded Update on TypingMind?

Because you install it once and use it with any model. Evo Pptx Embedded Update is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Evo Pptx Embedded Update in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/Zhang-Henry/CoEvoSkills/tree/main/artifacts/skills/exceltable-in-ppt/evo-pptx-embedded-update. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Evo Pptx Embedded Update?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Evo Pptx Embedded Update?

As many as you like. As long as a model supports skills, you can use Evo Pptx Embedded Update with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Evo Pptx Embedded Update AI skill free?

Yes. It is published on GitHub by Zhang-Henry under the Apache-2.0 license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Embedded Workbook Update in PPTX

End-to-End Example

Functions

Approach

Bundled files

Frequently asked questions

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