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.
npx skills add yorkeccak/scientific-skills --skill chembl-searchgit clone --depth 1 https://github.com/yorkeccak/scientific-skillsWrote 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.
[](https://agentmods.dev/skills/yorkeccak/scientific-skills/chembl-search)<a href="https://agentmods.dev/skills/yorkeccak/scientific-skills/chembl-search"><img src="https://agentmods.dev/badge/skills/yorkeccak/scientific-skills/chembl-search/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.
<a href="https://agentmods.dev/skills/yorkeccak/scientific-skills/chembl-search"><img src="https://agentmods.dev/badge/skills/yorkeccak/scientific-skills/chembl-search.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00028 | $0.01250 |
| Opus 5 | $0.00014 | $0.00625 |
| Sonnet 5 | $0.00006 | $0.00250 |
| Haiku 4.5 | $0.00003 | $0.00125 |
Grade B, and why
chembl-search scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
CHEMBL_SCRIPT=$(find ~/.claude/plugins/cache -name "search" -path "*/chembl-search/*/scripts/*" -type f 2>/dev/null | head -1) Copies of this mod
2 near-identical copies found in the catalogue:
- chembl-search — 100% identical, 0 lines differ
- chembl-search — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 212 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ChEMBL Search
Search the complete ChEMBL database of bioactive molecules, drug targets, and binding data using natural language queries powered by Valyu's semantic search API.
Why This Skill is Powerful
- No API Parameter Parsing: Just pass natural language queries directly - no need to construct complex search parameters
- Semantic Search: Understands the meaning of your query, not just keyword matching
- Full-Text Access: Returns complete compound and target information
- Image Links: Includes molecular structures and data visualizations
- Comprehensive Coverage: Access to all ChEMBL bioactive molecule data for drug discovery
Requirements
- Node.js 18+ (uses built-in fetch)
- Valyu API key from https://platform.valyu.ai ($10 free credits)
CRITICAL: Script Path Resolution
The scripts/search commands in this documentation are relative to this skill's installation directory.
Before running any command, locate the script using:
CHEMBL_SCRIPT=$(find ~/.claude/plugins/cache -name "search" -path "*/chembl-search/*/scripts/*" -type f 2>/dev/null | head -1)
Then use the full path for all commands:
$CHEMBL_SCRIPT "kinase inhibitors" 15
API Key Setup Flow
When you run a search and receive "setup_required": true, follow this flow:
-
Ask the user for their API key: "To search ChEMBL, I need your Valyu API key. Get one free ($10 credits) at https://platform.valyu.ai"
-
Once the user provides the key, run:
scripts/search setup <api-key> -
Retry the original search.
When to Use This Skill
- Finding bioactive compounds for drug discovery
- Target-based compound searching
- Compound property optimization
- Assay data and biological activity research
- Structure-activity relationship studies
- Lead compound identification
Output Format
{
"success": true,
"type": "chembl_search",
"query": "kinase inhibitors",
"result_count": 10,
"results": [
{
"title": "Compound/Assay Title",
"url": "https://chembl.org/...",
"content": "Compound data, targets, assay results...",
"source": "chembl",
"relevance_score": 0.95,
"images": ["https://example.com/structure.png"]
}
],
"cost": 0.025
}
What ships with it
2 files 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.
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.
- 12d ago First seen · 212 lines · 28 tokens per session scan B a5ed62d18d39
chembl-search is a skill published in the GitHub repository yorkeccak/scientific-skills (61 stars, last pushed 7mo ago), licensed MIT. It adds 28 tokens to every session and 1,250 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
chembl-search
Search ChEMBL bioactive molecules database with natural language queries. Find compounds and assay data with Valyu semantic search.
chembl-search
Search ChEMBL bioactive molecules database with natural language queries. Find compounds and assay data with Valyu semantic search.
chembl-search
Search ChEMBL bioactive molecules database with natural language queries. Find compounds and assay data with Valyu semantic search.
molecular-rag
Retrieve structurally similar compounds with known properties from ChEMBL/ZINC to ground predictions and inform optimization. Based on MolRAG (Xian 2025, ACL).
chembl-query
Query ChEMBL database for bioactivity data on drug-like compounds. Use this skill when: (1) Finding compounds active against a protein target (target-based search), (2) Getting bioactivity profile for a molecule (molecule-based search), (3) Finding drugs for a disease indication (indication-based search).
drug-discovery-search
End-to-end drug discovery platform combining ChEMBL compounds, DrugBank, targets, and FDA labels. Natural language powered by Valyu.