chai

chai is a skill for Claude Code, Codex from BioTender-max/ProteinClaw. It costs 107 tokens per session (759 once invoked), scanned A, original, no licence file.

A molecular structure predictor based on the Chai-1 model. It estimates three-dimensional structures for protein complexes and protein-ligand pairs.

In plain words
What is it for?
Predicting protein-protein and protein-ligand structures, validating binders, and running high-throughput predictions through the Chai API.
Why use it?
It helps check designed binders and explore molecular interactions as an alternative to AlphaFold2.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Predicting protein-protein and protein-ligand structures, validating binders, and running high-throughput predictions through the Chai API.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/biotender-max/proteinclaw/chai
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.

Any agent
npx skills add BioTender-max/ProteinClaw --skill chai
Clone the repo
git clone --depth 1 https://github.com/BioTender-max/ProteinClaw

Made for: Claude Code, Codex.

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 chai

README.md
[![agentmods](https://agentmods.dev/badge/skills/biotender-max/proteinclaw/chai.svg)](https://agentmods.dev/skills/biotender-max/proteinclaw/chai)
Your own site
<a href="https://agentmods.dev/skills/biotender-max/proteinclaw/chai"><img src="https://agentmods.dev/badge/skills/biotender-max/proteinclaw/chai.svg" alt="Measured on agentmods" height="20"></a>
Per session 107 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 759 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00107 $0.00759
Opus 5 $0.00053 $0.00380
Sonnet 5 $0.00021 $0.00152
Haiku 4.5 $0.00011 $0.00076

Measured 7d ago against content hash 80e7d9ce9deb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

chai 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.

skills/chai/SKILL.md · 109 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. 7d ago First seen · 109 lines · 107 tokens per session scan A 80e7d9ce9deb

Subscribe to this mod's changes

chai is a skill published in the GitHub repository BioTender-max/ProteinClaw (11 stars, last pushed 6mo ago), with no licence file. It adds 107 tokens to every session and 759 once invoked, about $0.0005 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.

Related

Other skills, from other repositories

chai

Structure prediction using Chai-1, a foundation model for molecular structure. Use this skill when: (1) Predicting protein-protein complex structures, (2) Validating designed binders, (3) Predicting protein-ligand complexes, (4) Using the Chai API for high-throughput prediction, (5) Need an alternative to AlphaFold2.…

adaptyvbio/protein-design-skills · 107 tokens

chai1-structure-prediction

Chai-1 structure prediction for protein complexes and design validation. Use this skill when: (1) Predicting protein-protein complex structures, (2) Validating designed binders, (3) Predicting protein-ligand complexes, (4) Using the Chai API for high-throughput prediction, (5) Need an alternative to AlphaFold2. For QC…

zongtingwei/Bioclaw_Skills_Hub · 121 tokens

alphafold

Validate protein designs using AlphaFold2 structure prediction. Use this skill when: (1) Validating designed sequences fold correctly, (2) Predicting binder-target complex structures, (3) Calculating confidence metrics (pLDDT, pTM, ipTM), (4) Self-consistency validation of designs, (5) Multi-chain complex prediction…

adaptyvbio/protein-design-skills · 100 tokens

protenix

Structure prediction with Protenix, an open AlphaFold3 reproduction. Use this skill when: (1) Predicting complex structures with an AF3-class model, (2) Wanting an open alternative to AF3 alongside Boltz and Chai, (3) Validating designed binder-target complexes. For QC thresholds, use protein-qc. For ipSAE ranking…

adaptyvbio/protein-design-skills · 84 tokens

chai1-structure-prediction

Chai-1 structure prediction for protein complexes and design validation. Use this skill when: (1) Predicting protein-protein complex structures, (2) Validating designed binders, (3) Predicting protein-ligand complexes, (4) Using the Chai API for high-throughput prediction, (5) Need an alternative to AlphaFold2. For QC…

BioTender-max/awesome-bio-agent-skills · 121 tokens

chai

Structure prediction using Chai-1, a foundation model for molecular structure. Use this skill when: (1) Predicting protein-protein complex structures, (2) Validating designed binders, (3) Predicting protein-ligand complexes, (4) Using the Chai API for high-throughput prediction, (5) Need an alternative to AlphaFold2.…

BioTender-max/awesome-bio-agent-skills · 107 tokens