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Agent skill

Build Compiled Extensions

by A-EVO-Lab in A-EVO-Lab/a-evolve

How to build C/C++/Cython/Fortran extensions and frameworks like Caffe, OpenCV, protobuf-dependent projects from source.

No licenceAuto-check passedBackend & APIs

Install Build Compiled Extensions

skills CLI
$ npx skills add A-EVO-Lab/a-evolve --skill build-compiled-extensions -a claude-code

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

GitHub CLI
$ gh skill install A-EVO-Lab/a-evolve build-compiled-extensions --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/A-EVO-Lab/a-evolve.git skills-src && mkdir -p .claude/skills && cp -r skills-src/seed_workspaces/terminal/skills/build-compiled-extensions .claude/skills/build-compiled-extensions && 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
build-compiled-extensions
GitHub stars
806
Token cost
~416 tokens
SKILL.md length
135 words
Files
1
Skills in repo
17
Repo updated
First seen
Licence
None found

At a glance

How to build C/C++/Cython/Fortran extensions and frameworks like Caffe, OpenCV, protobuf-dependent projects from source.

  • Works in 4 steps: Check protobuf version: protoc --version… → Fix API incompatibilities before… → Use make -j$(nproc) but capture errors:… → …
  • Tasks that involve gRPC and Protobuf
  • SKILL.md covers Pre-flight, Cython extension workflow, Building large C++ frameworks… and When pip install times out, plus 2 more sections
  • Calls make, pip and python

What it does

Build Compiled Extensions is an agent skill from A-EVO-Lab/a-evolve. How to build C/C++/Cython/Fortran extensions and frameworks like Caffe, OpenCV, protobuf-dependent projects from source.

Its SKILL.md is about 420 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Backend & APIs, covering gRPC and Protobuf. It works with gRPC, C++, OpenCV and NumPy. The repository describes itself as: The official repository of "Position: Agentic Evolution is the Path to Evolving LLMs".

When your agent uses it

  • Tasks that involve gRPC and Protobuf

Example prompts

  • “/build-compiled-extensions”

Requirements

  • Python 3

Workflow steps

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

  1. Check protobuf version: protoc --version and dpkg -l | grep protobuf
  2. Fix API incompatibilities before building (see debug-and-fix skill)
  3. Use make -j$(nproc) but capture errors: make 2>&1 | tee build.log
  4. For Caffe specifically

What it can do on your machine

Read from SKILL.md and the folder at commit 18ba996. 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:

    • make
    • pip
    • python
    • apt-get

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

  • Network

    No URLs in SKILL.md. Its commands use pip, which can reach the network depending on how they are called.

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

  • Credentials

    Names no API keys, tokens, secrets or passwords.

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

Context cost

Build Compiled Extensions loads about 416 tokens when it runs. Until then it costs about 37 tokens; SKILL.md has 135 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~37
When it runs · the whole SKILL.md, loaded when a task matches
~416

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 135 words (~416 tokens).

name
build-compiled-extensions

Read the full SKILL.md on GitHub

Files

Just SKILL.md in seed_workspaces/terminal/skills/build-compiled-extensions of A-EVO-Lab/a-evolve.

Open the folder on GitHubat commit 18ba996

Compare with similar skills

Build Compiled Extensions 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.

Build Compiled Extensions compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Build Compiled Extensions this skillA-EVO-Lab/a-evolve806—~416Automated safety check: PassNone
Xilinx SuiteQingquanYao/xilinx-skill461—~1.5kAutomated safety check: PassNone
Subspace Buildsdallison/subspace104—~990Automated safety check: PassApache-2.0
Doca Flow Grpc ServerNVIDIA/skills3.5k—~4.2kAutomated safety check: PassApache-2.0
Use Yaakmountain-loop/yaak19k—~1.9kAutomated safety check: PassMIT
Golang Proantoniopaya22/go-rest-template1723 repos~1.2kAutomated safety check: PassMIT

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Works with

Categories

Questions about Build Compiled Extensions

What does Build Compiled Extensions do?

How to build C/C++/Cython/Fortran extensions and frameworks like Caffe, OpenCV, protobuf-dependent projects from source. Build Compiled Extensions is an agent skill from A-EVO-Lab/a-evolve. How to build C/C++/Cython/Fortran extensions and frameworks like Caffe, OpenCV, protobuf-dependent projects from source.

When should I use Build Compiled Extensions?

Build Compiled Extensions fits situations like: tasks that involve gRPC and Protobuf.

How do I install Build Compiled Extensions in Claude Code?

Run `npx skills add A-EVO-Lab/a-evolve --skill build-compiled-extensions -a claude-code`. Or copy the skill folder (seed_workspaces/terminal/skills/build-compiled-extensions in A-EVO-Lab/a-evolve) into .claude/skills/build-compiled-extensions in your project. Claude Code loads it when a task matches its description.

How do I install Build Compiled Extensions in Codex?

Run `npx skills add A-EVO-Lab/a-evolve --skill build-compiled-extensions -a codex`. Or copy the skill folder (seed_workspaces/terminal/skills/build-compiled-extensions in A-EVO-Lab/a-evolve) into .agents/skills/build-compiled-extensions in your project. Codex loads it when a task matches its description.

Can I use Build Compiled Extensions 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 A-EVO-Lab/a-evolve --skill build-compiled-extensions -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/build-compiled-extensions, .gemini/skills/build-compiled-extensions, .github/skills/build-compiled-extensions and .opencode/skills/build-compiled-extensions in your project.

What does Build Compiled Extensions need to run?

Going by SKILL.md and its folder, Build Compiled Extensions needs the command-line tools its instructions call (make, pip, python and apt-get). Our summary lists: Python 3.

Does Build Compiled Extensions access the network?

SKILL.md contains no URLs. Its commands use pip, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Build Compiled Extensions 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 Build Compiled Extensions use?

No licence was found for Build Compiled Extensions or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Build Compiled Extensions use?

About 416 tokens (SKILL.md is roughly 1.7k 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 Build Compiled Extensions?

Skills that share tags, products or a category with Build Compiled Extensions: Xilinx Suite (QingquanYao/xilinx-skill, 461 stars), Subspace Builds (dallison/subspace, 104 stars), Doca Flow Grpc Server (NVIDIA/skills, 3.5k stars) and Use Yaak (mountain-loop/yaak, 19k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Build Compiled Extensions?

A-EVO-Lab (a GitHub organization) maintains it in A-EVO-Lab/a-evolve, which has 806 GitHub stars. The repository holds 17 skills in this directory. The repository was last updated on August 22, 2026.

Source: A-EVO-Lab/a-evolve on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.