API Designer
Jeffallan/claude-skills
Designs REST and GraphQL APIs from resource modeling to an OpenAPI 3.1 contract, with versioning, pagination and RFC 7807 error handling.
Query the ChEMBL database for drug molecules, bioactivity data, and drug targets via the ChEMBL REST API.
Install Chembl Query
$ npx skills add QSong-github/DrugClaw --skill chembl-query -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install QSong-github/DrugClaw chembl-query --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/QSong-github/DrugClaw.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/dti/chembl .claude/skills/chembl-query && rm -rf skills-srcUse ~/.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/
Install the "chembl-query" agent skill from https://github.com/QSong-github/DrugClaw/tree/main/skills/dti/chembl into .claude/skills/chembl-query/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "chembl-query", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/QSong-github/DrugClaw/tree/main/skills/dti/chemblType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add QSong-github/DrugClaw --skill chembl-query -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install QSong-github/DrugClaw chembl-query --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/QSong-github/DrugClaw.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/dti/chembl .agents/skills/chembl-query && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "chembl-query" agent skill from https://github.com/QSong-github/DrugClaw/tree/main/skills/dti/chembl into .agents/skills/chembl-query/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "chembl-query", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add QSong-github/DrugClaw --skill chembl-query -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install QSong-github/DrugClaw chembl-query --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/QSong-github/DrugClaw.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/dti/chembl .cursor/skills/chembl-query && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "chembl-query" agent skill from https://github.com/QSong-github/DrugClaw/tree/main/skills/dti/chembl into .cursor/skills/chembl-query/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "chembl-query", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/QSong-github/DrugClaw.git --path skills/dti/chembl--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add QSong-github/DrugClaw --skill chembl-query -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install QSong-github/DrugClaw chembl-query --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/QSong-github/DrugClaw.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/dti/chembl .gemini/skills/chembl-query && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "chembl-query" agent skill from https://github.com/QSong-github/DrugClaw/tree/main/skills/dti/chembl into .gemini/skills/chembl-query/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "chembl-query", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install QSong-github/DrugClaw chembl-queryInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add QSong-github/DrugClaw --skill chembl-query -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/QSong-github/DrugClaw.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/dti/chembl .github/skills/chembl-query && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "chembl-query" agent skill from https://github.com/QSong-github/DrugClaw/tree/main/skills/dti/chembl into .github/skills/chembl-query/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "chembl-query", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add QSong-github/DrugClaw --skill chembl-query -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install QSong-github/DrugClaw chembl-query --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/QSong-github/DrugClaw.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/dti/chembl .opencode/skills/chembl-query && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "chembl-query" agent skill from https://github.com/QSong-github/DrugClaw/tree/main/skills/dti/chembl into .opencode/skills/chembl-query/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "chembl-query", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
chembl-query- GitHub stars
- 116
- Used in
- 1 other repo
- Token cost
- ~632 tokens
- SKILL.md length
- 192 words
- Files
- 6
- Skills in repo
- 31
- Repo updated
- First seen
- Licence
- None found
At a glance
Query the ChEMBL database for drug molecules, bioactivity data, and drug targets via the ChEMBL REST API.
- Works in 5 steps: Single molecule by ID —… → Batch molecule search by name —… → Bioactivities for multiple molecules —… → …
- The user asks about drug properties (molecular weight
- SKILL.md covers API, Usage, Key Fields and Data Source
- Runs Python scripts from its folder; reaches ebi.ac.uk
What it does
Chembl Query is an agent skill from QSong-github/DrugClaw. Query the ChEMBL database for drug molecules, bioactivity data, and drug targets via the ChEMBL REST API. Use whenever the user asks about drug properties (molecular weight, logP, Lipinski violations), drug-target interactions, bioactivity assay results, or wants to look up any entity by ChEMBL ID or drug/gene name in ChEMBL. Supports single entity or batch queries. No API key required.
Its SKILL.md is about 630 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files (for example `README.md`, `__init__.py` and `chembl_skill.py`).
It sits in Backend & APIs, covering REST APIs. The repository describes itself as: 🦀 Agentic RAG for drug intelligence · 57 skills · 15 task categories · DTI · ADR · DDI · PGx · Repurposing · Powered by LangGraph.
When your agent uses it
- The user asks about drug properties (molecular weight
- Lipinski violations)
- Drug-target interactions
- Bioactivity assay results
Example prompts
- “/chembl-query”
Requirements
- Python 3
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Single molecule by ID — query_molecules("CHEMBL25")
- Batch molecule search by name — query_molecules(["ibuprofen", "metformin"], limit=3)
- Bioactivities for multiple molecules — query_bioactivities(["CHEMBL25", "CHEMBL1642"], limit=3)
- Single target by gene name — query_targets("EGFR", limit=3)
- Batch target lookup by ID — query_targets(["CHEMBL203", "CHEMBL204"])
What it can do on your machine
Read from SKILL.md and the folder at commit bc7b93e. 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
Ships script files (Python), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
ebi.ac.uk
Also links to:
doi.org
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
Chembl Query loads about 632 tokens when it runs. Until then it costs about 101 tokens; SKILL.md has 192 words of instructions outside code blocks.
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 192 words (~632 tokens).
“Query ChEMBL bioactivity database for molecules, targets, and activity data. Auto-detects input type by prefix:”
- name
- chembl-query
Files
SKILL.md and 5 other files in skills/dti/chembl of QSong-github/DrugClaw.
- SKILL.md
- README.md
- __init__.py
- chembl_skill.py
- example.py
- retrieve.py
Open the folder on GitHubat commit bc7b93e
Used in 1 other repository
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in QSong-github/DrugClaw, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Chembl Query 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Chembl Query this skillQSong-github/DrugClaw | 116 | 1 repos | ~632 | Automated safety check: Pass | None | |
| API DesignerJeffallan/claude-skills | 12k | 2 repos | ~2k | Automated safety check: Pass | MIT | |
| Paperclippaperclipai/paperclip | 98k | — | ~9.6k | Automated safety check: Pass | MIT | |
| Nodejs Backend Patternsever-works/ever-works | 158 | 17 repos | ~4k | Automated safety check: Pass | AGPL-3.0 | |
| OpenAPI to MCP Servermcp-use/mcp-use | 11k | — | ~5.2k | Automated safety check: Pass | Apache-2.0 | |
| Use Yaakmountain-loop/yaak | 19k | — | ~1.9k | Automated safety check: Pass | MIT |
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Related
Categories
Questions about Chembl Query
What does Chembl Query do?
Query the ChEMBL database for drug molecules, bioactivity data, and drug targets via the ChEMBL REST API. Chembl Query is an agent skill from QSong-github/DrugClaw. Query the ChEMBL database for drug molecules, bioactivity data, and drug targets via the ChEMBL REST API.
When should I use Chembl Query?
Chembl Query fits situations like: the user asks about drug properties (molecular weight; lipinski violations); drug-target interactions; bioactivity assay results.
How do I install Chembl Query in Claude Code?
Run `npx skills add QSong-github/DrugClaw --skill chembl-query -a claude-code`. Or copy the skill folder (skills/dti/chembl in QSong-github/DrugClaw) into .claude/skills/chembl-query in your project. Claude Code loads it when a task matches its description.
How do I install Chembl Query in Codex?
Run `npx skills add QSong-github/DrugClaw --skill chembl-query -a codex`. Or copy the skill folder (skills/dti/chembl in QSong-github/DrugClaw) into .agents/skills/chembl-query in your project. Codex loads it when a task matches its description.
Can I use Chembl Query 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 QSong-github/DrugClaw --skill chembl-query -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/chembl-query, .gemini/skills/chembl-query, .github/skills/chembl-query and .opencode/skills/chembl-query in your project.
What does Chembl Query need to run?
Going by SKILL.md and its folder, Chembl Query needs Python for the scripts in its folder. Our summary lists: Python 3.
Does Chembl Query access the network?
SKILL.md names 2 domains. In commands or code: ebi.ac.uk; the agent is likely to contact it when it follows the instructions. As links in the text: doi.org. This is read from the text; nothing was executed.
Is Chembl Query 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 Chembl Query use?
No licence was found for Chembl Query or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Chembl Query use?
About 632 tokens (SKILL.md is roughly 2.5k 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 Chembl Query?
Skills that share tags, products or a category with Chembl Query: API Designer (Jeffallan/claude-skills, 12k stars), Paperclip (paperclipai/paperclip, 98k stars), Nodejs Backend Patterns (ever-works/ever-works, 158 stars) and OpenAPI to MCP Server (mcp-use/mcp-use, 11k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Chembl Query?
QSong-github (a GitHub user) maintains it in QSong-github/DrugClaw, which has 116 GitHub stars. The repository holds 31 skills in this directory. The repository was last updated on August 25, 2026.
Source: QSong-github/DrugClaw on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.