chai1

chai1 is a skill for Claude Code, Codex from HughYau/AcademicForge. It costs 98 tokens per session (1,280 once invoked), scanned A, original, no licence file.

A structure-prediction tool for modelling complexes made from proteins, nucleic acids, and small molecules. A FASTA file is a plain-text file containing biological sequences.

In plain words
What is it for?
It is for predicting antibody-antigen and protein-ligand complexes, and for checking designed binders with a model similar to AlphaFold-multimer.
Why use it?
It helps researchers test possible molecular interactions from sequence or molecule information before experiments.

Skill for Claude CodeCodex

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

Good fit It is for predicting antibody-antigen and protein-ligand complexes, and for checking designed binders with a model similar to AlphaFold-multimer.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hughyau/academicforge/chai1
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 HughYau/AcademicForge --skill chai1
Clone the repo
git clone --depth 1 https://github.com/HughYau/AcademicForge

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 chai1

README.md
[![agentmods](https://agentmods.dev/badge/skills/hughyau/academicforge/chai1.svg)](https://agentmods.dev/skills/hughyau/academicforge/chai1)
Your own site
<a href="https://agentmods.dev/skills/hughyau/academicforge/chai1"><img src="https://agentmods.dev/badge/skills/hughyau/academicforge/chai1.svg" alt="Measured on agentmods" height="20"></a>
Per session 98 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,280 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00098 $0.01280
Opus 5 $0.00049 $0.00640
Sonnet 5 $0.00020 $0.00256
Haiku 4.5 $0.00010 $0.00128

Measured 9d ago against content hash 14c7b111475c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

chai1 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 9d 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/claude-science/chai1/SKILL.md · 112 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 9d ago First seen · 112 lines · 98 tokens per session scan A 14c7b111475c

Subscribe to this mod's changes

chai1 is a skill published in the GitHub repository HughYau/AcademicForge (2,525 stars, last pushed 9d ago), with no licence file. It adds 98 tokens to every session and 1,280 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.