End-to-end Proteina-Complexa design pipeline driver. An agent skill from NVIDIA-BioNeMo/bionemo-agent-toolkit.

Custom licenceAuto-check: notesResearch & Science

Install Complexa Design

skills CLI
$ npx skills add NVIDIA-BioNeMo/bionemo-agent-toolkit --skill complexa-design -a claude-code

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

GitHub CLI
$ gh skill install NVIDIA-BioNeMo/bionemo-agent-toolkit complexa-design --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/NVIDIA-BioNeMo/bionemo-agent-toolkit.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/bionemo-agent-toolkit/skills/complexa-design .claude/skills/complexa-design && 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
complexa-design
GitHub stars
478
Token cost
~4.1k tokens
SKILL.md length
1,572 words
Files
6
Skills in repo
14
Repo updated
First seen
Licence
Custom licence

At a glance

End-to-end Proteina-Complexa design pipeline driver. An agent skill from NVIDIA-BioNeMo/bionemo-agent-toolkit.

  • Works in 7 steps: Pre-flight → Pick the pipeline → Gather parameters → …
  • The user wants to design a binder
  • SKILL.md covers What this skill enables, Step 1: Pre-flight, Step 2: Pick the pipeline and Step 3: Gather parameters, plus 7 more sections
  • Calls bash, python and python3

What it does

Complexa Design is an agent skill from NVIDIA-BioNeMo/bionemo-agent-toolkit. End-to-end Proteina-Complexa design pipeline driver. Use when the user wants to "design a binder", "design binders for X", "run complexa design", "de novo binder", "PDL1 binder", "TrkA binder", "design proteins for target", "protein binder design", "ligand binder", "design a small-molecule binder", "ATP-binding protein", "AME motif scaffolding", "scaffold a motif near a ligand", "motif + ligand design", "enzyme scaffolding", "flow matching protein design", "beam-search binder", "FK steering", "MCTS protein…

Its SKILL.md is about 4.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files (for example `evals/evals.json`, `evals/trigger_evals.json` and `reference/overrides.md`). Compatibility notes: complexa CLI installed (pip install -e .); environment file populated; 1x CUDA GPU =40GB VRAM (A100/H100/L40S); 24 CPUs; ~50GB disk

It sits in Research & Science, covering Project scaffolding and Protein structure and design. The repository describes itself as: Turn any agent into a life science expert with NVIDIA BioNeMo skills.

When your agent uses it

  • The user wants to design a binder
  • Design binders for X
  • Run complexa design
  • Design proteins for target

Example prompts

  • “design a binder”
  • “design binders for X”
  • “run complexa design”
  • “/complexa-design”

Requirements

  • Python 3
  • Compatibility (from SKILL.md): complexa CLI installed (pip install -e .); environment file populated; 1x CUDA GPU >=40GB VRAM (A100/H100/L40S); 24 CPUs; ~50GB disk
  • Pre-approved tools (allowed-tools): Bash, Read, Write, AskUserQuestion

Workflow steps

7 steps, taken from the step headings in SKILL.md.

  1. Pre-flight
  2. Pick the pipeline
  3. Gather parameters
  4. Validate
  5. Run the pipeline
  6. Collect results
  7. Emit manifest

What it can do on your machine

Read from SKILL.md and the folder at commit 2113472. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Bash
    • Read
    • Write
    • AskUserQuestion

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • bash
    • python
    • python3

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

  • Network

    No URLs in SKILL.md.

    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.

  • Compatibility

    complexa CLI installed (pip install -e .); environment file populated; 1x CUDA GPU >=40GB VRAM (A100/H100/L40S); 24 CPUs; ~50GB disk

    From compatibility in the SKILL.md frontmatter.

Context cost

Complexa Design loads about 4.1k tokens when it runs. Until then it costs about 194 tokens; SKILL.md has 1,572 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~194
When it runs · the whole SKILL.md, loaded when a task matches
~4.1k

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: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NoteMentions a .env fileSKILL.md:316
    yError: AF2_DIR` | colabdesign eval but `.env` does not set `AF2_DIR` | Set `AF2_DIR` in `.env` or `++metric.binder_fold
  • NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
    allowed-tools: Bash, Read, Write, AskUserQuestion

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,572 words (~4,120 tokens).

“Drive the full four-stage complexa design pipeline: generate (flow matching + search) -> filter (top-N by reward) -> evaluate (refold with AF2/RF3) -> analyze (success rate, FoldSeek/MMseqs diversity). Pick the right pipeline config for the design intent, validate the run…”

— opening of SKILL.md by NVIDIA-BioNeMo, Custom licence
name
complexa-design
allowed-tools
Bash, Read, Write, AskUserQuestion
compatibility
complexa CLI installed (pip install -e .); environment file populated; 1x CUDA GPU >=40GB VRAM (A100/H100/L40S); 24 CPUs; ~50GB disk

Read the full SKILL.md on GitHub

Files

SKILL.md and 5 other files in skills/bionemo-agent-toolkit/skills/complexa-design of NVIDIA-BioNeMo/bionemo-agent-toolkit.

  • SKILL.md
  • evals/evals.json
  • evals/trigger_evals.json
  • reference/overrides.md
  • reference/pipelines.md
  • reference/troubleshooting.md

Open the folder on GitHubat commit 2113472

Compare with similar skills

Complexa Design 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.

Complexa Design compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Complexa Design this skillNVIDIA-BioNeMo/bionemo-agent-toolkit478—~4.1kAutomated safety check: NotesCustom licence
RfdiffusionPKU-YuanGroup/OpenAI4S617—~2.2kAutomated safety check: PassMIT
Rfdiffusionadaptyvbio/protein-design-skills1634 repos~2.3kAutomated safety check: PassMIT
Tooluniverse Protein Therapeutic Designwu-yc/LabClaw1.1k2 repos~4.4kAutomated safety check: PassNone
Gtdscunning1975/MixtapeTools470—~2.9kAutomated safety check: NotesNone
Scaffold Exercisespedrohcgs/claude-code-my-workflow1.6k—~2kAutomated safety check: NotesMIT

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Questions about Complexa Design

What does Complexa Design do?

End-to-end Proteina-Complexa design pipeline driver. An agent skill from NVIDIA-BioNeMo/bionemo-agent-toolkit. Complexa Design is an agent skill from NVIDIA-BioNeMo/bionemo-agent-toolkit. End-to-end Proteina-Complexa design pipeline driver.

When should I use Complexa Design?

Complexa Design fits situations like: the user wants to design a binder; design binders for X; run complexa design; design proteins for target.

How do I install Complexa Design in Claude Code?

Run `npx skills add NVIDIA-BioNeMo/bionemo-agent-toolkit --skill complexa-design -a claude-code`. Or copy the skill folder (skills/bionemo-agent-toolkit/skills/complexa-design in NVIDIA-BioNeMo/bionemo-agent-toolkit) into .claude/skills/complexa-design in your project. Claude Code loads it when a task matches its description.

How do I install Complexa Design in Codex?

Run `npx skills add NVIDIA-BioNeMo/bionemo-agent-toolkit --skill complexa-design -a codex`. Or copy the skill folder (skills/bionemo-agent-toolkit/skills/complexa-design in NVIDIA-BioNeMo/bionemo-agent-toolkit) into .agents/skills/complexa-design in your project. Codex loads it when a task matches its description.

Can I use Complexa Design 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 NVIDIA-BioNeMo/bionemo-agent-toolkit --skill complexa-design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/complexa-design, .gemini/skills/complexa-design, .github/skills/complexa-design and .opencode/skills/complexa-design in your project.

What does Complexa Design need to run?

Going by SKILL.md and its folder, Complexa Design needs the command-line tools its instructions call (bash, python and python3). Our summary lists: Python 3. Its frontmatter pre-approves these tools: Bash, Read, Write, AskUserQuestion. Compatibility (from SKILL.md): complexa CLI installed (pip install -e .); environment file populated; 1x CUDA GPU >=40GB VRAM (A100/H100/L40S); 24 CPUs; ~50GB disk.

Does Complexa Design access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Complexa Design safe to install?

Our automated static check of SKILL.md found notes only (mentions a .env file; pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Complexa Design use?

Complexa Design has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Complexa Design use?

About 4.1k tokens (SKILL.md is roughly 16k 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 Complexa Design?

Skills that share tags, products or a category with Complexa Design: Rfdiffusion (PKU-YuanGroup/OpenAI4S, 617 stars), Rfdiffusion (adaptyvbio/protein-design-skills, 163 stars), Tooluniverse Protein Therapeutic Design (wu-yc/LabClaw, 1.1k stars) and Gtd (scunning1975/MixtapeTools, 470 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Complexa Design?

NVIDIA-BioNeMo (a GitHub organization) maintains it in NVIDIA-BioNeMo/bionemo-agent-toolkit, which has 478 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on October 7, 2026.

Source: NVIDIA-BioNeMo/bionemo-agent-toolkit on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.