unichem-database

unichem-database is a skill for Claude Code from jaechang-hits/SciAgent-Skills. It costs 96 tokens per session (9,479 once invoked), scanned A, original, no licence file.

A guide to UniChem, a service that links chemical compound identifiers across more than 20 databases. It can translate IDs between sources, resolve InChIKeys, and find structurally related compounds.

In plain words
What is it for?
Use it to convert identifiers between sources such as PubChem, ChEMBL, PDB, and DrugBank, look up source-specific records, and find related compounds by connectivity.
Why use it?
The same compound often has different identifiers in different chemical databases. This provides a way to connect those records without matching them manually.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the sciagent-skills plugin — 206 skills shipped together

Good fit Use it to convert identifiers between sources such as PubChem, ChEMBL, PDB, and DrugBank, look up source-specific records, and find related compounds by connectivity.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jaechang-hits/sciagent-skills/unichem-database
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 jaechang-hits/SciAgent-Skills --skill unichem-database
Clone the repo
git clone --depth 1 https://github.com/jaechang-hits/SciAgent-Skills

Made for: Claude Code.

Or install sciagent-skills, the plugin that ships this one along with the rest of its 206 skills.

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 unichem-database

README.md
[![agentmods](https://agentmods.dev/badge/skills/jaechang-hits/sciagent-skills/unichem-database/github.svg)](https://agentmods.dev/skills/jaechang-hits/sciagent-skills/unichem-database)
Your own site
<a href="https://agentmods.dev/skills/jaechang-hits/sciagent-skills/unichem-database"><img src="https://agentmods.dev/badge/skills/jaechang-hits/sciagent-skills/unichem-database/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for unichem-database

Your own site · 80×15
<a href="https://agentmods.dev/skills/jaechang-hits/sciagent-skills/unichem-database"><img src="https://agentmods.dev/badge/skills/jaechang-hits/sciagent-skills/unichem-database.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 96 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,479 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00096 $0.09479
Opus 5.5 $0.00038 $0.03792
Sonnet 5.5 $0.00019 $0.01896
Haiku 4.5 $0.00010 $0.00948

Measured 29d ago against content hash b2a3d84224dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

unichem-database scanned grade A with 1 finding 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 29d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

r = requests.post(f"{UNICHEM_API}/{endpoint}", json=body, timeout=20)
skills/structural-biology-drug-discovery/unichem-database/SKILL.md · 759 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

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. 29d ago First seen · 759 lines · 96 tokens per session scan A b2a3d84224dc

Subscribe to this mod's changes

unichem-database is a skill published in the GitHub repository jaechang-hits/SciAgent-Skills (384 stars, last pushed 6d ago), with no licence file. It adds 96 tokens to every session and 9,479 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-29.

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