Im Registry indexiert
chem-similarity-search
Find structurally similar chemical compounds using PubChem's 2D fast similarity engine via the PUG-REST API.
Übersicht
Find structurally similar chemical compounds using PubChem's 2D fast similarity engine via the PUG-REST API.
Vollständige Dokumentation lesen
Quelldokumentation, keine Anweisungen für diese Website. Vor dem Ausführen von Befehlen die Berechtigungen prüfen.
Chemical Similarity Search
Goal
To programmatically find chemical analogs, alternative precursors, and structurally similar compounds for a given target molecule using PubChem's "fastsimilarity_2d" endpoint. The skill retrieves lists of similar compounds ranked by sequence alignment of their 2D molecular fingerprints, providing CIDs, molecular weights, formulas, and SMILES strings.
Instructions
1. Search by SMILES String
Search for similar compounds by providing the canonical or isomeric SMILES.
Adjust the --threshold (similarity cutoff 0-100, default is 95) to widen or narrow the search radius. Higher threshold equals higher similarity.
Adjust --max_records to limit the output length.
# Env: base-agent
python .agents/skills/chem-similarity-search/scripts/similarity_search.py \
--smiles "CC(=O)Oc1ccccc1C(=O)O" \
--threshold 95 \
--max_records 5 \
--outdir research/aspirin_similar \
--output aspirin_similar.json
2. Search by PubChem CID
Search directly using an exact compound's CID. This avoids translation steps for SMILES parsing.
# Env: base-agent
python .agents/skills/chem-similarity-search/scripts/similarity_search.py \
--cid 2244 \
--threshold 90 \
--max_records 10 \
--outdir research/aspirin_similar \
--output cid_2244_similar.json
Examples
We can test extracting highly similar analogs (Threshold 95) for Aspirin (CID: 2244 or SMILES: CC(=O)Oc1ccccc1C(=O)O).
# Env: base-agent
python .agents/skills/chem-similarity-search/scripts/similarity_search.py \
--cid 2244 \
--threshold 95 \
--max_records 5 \
--outdir .agents/skills/chem-similarity-search/examples/aspirin_analogs \
--output aspirin_analogs.json
Constraints
- Rate Limiting: PubChem PUG REST API enforces per-user throttling limits. Heavy bursts will result in
HTTP 503 Server Busyerrors. The script implements an exponential backoff retry mechanism. - 2D Similarity: Uses exact structural bit-vector fingerprints. Stereochemical and 3D properties do not strongly affect the score.
- Network: Internet access is required.
Author: Bowen Deng Contact: GitHub @learningmatter-mit
Dateimetadaten
name: chem-similarity-search description: Find structurally similar chemical compounds using PubChem's 2D fast similarity engine via the PUG-REST API. category: [chemistry, drug-discovery]
Originaltext anzeigen
--- name: chem-similarity-search description: Find structurally similar chemical compounds using PubChem's 2D fast similarity engine via the PUG-REST API. category: [chemistry, drug-discovery] --- # Chemical Similarity Search ## Goal To programmatically find chemical analogs, alternative precursors, and structurally similar compounds for a given target molecule using PubChem's "fastsimilarity_2d" endpoint. The skill retrieves lists of similar compounds ranked by sequence alignment of their 2D molecular fingerprints, providing CIDs, molecular weights, formulas, and SMILES strings. ## Instructions ### 1. Search by SMILES String Search for similar compounds by providing the canonical or isomeric SMILES. Adjust the `--threshold` (similarity cutoff 0-100, default is 95) to widen or narrow the search radius. Higher threshold equals higher similarity. Adjust `--max_records` to limit the output length. ```bash # Env: base-agent python .agents/skills/chem-similarity-search/scripts/similarity_search.py \ --smiles "CC(=O)Oc1ccccc1C(=O)O" \ --threshold 95 \ --max_records 5 \ --outdir research/aspirin_similar \ --output aspirin_similar.json ``` ### 2. Search by PubChem CID Search directly using an exact compound's CID. This avoids translation steps for SMILES parsing. ```bash # Env: base-agent python .agents/skills/chem-similarity-search/scripts/similarity_search.py \ --cid 2244 \ --threshold 90 \ --max_records 10 \ --outdir research/aspirin_similar \ --output cid_2244_similar.json ``` ## Examples We can test extracting highly similar analogs (Threshold 95) for Aspirin (CID: 2244 or SMILES: `CC(=O)Oc1ccccc1C(=O)O`). ```bash # Env: base-agent python .agents/skills/chem-similarity-search/scripts/similarity_search.py \ --cid 2244 \ --threshold 95 \ --max_records 5 \ --outdir .agents/skills/chem-similarity-search/examples/aspirin_analogs \ --output aspirin_analogs.json ``` ## Constraints - **Rate Limiting**: PubChem PUG REST API enforces per-user throttling limits. Heavy bursts will result in `HTTP 503 Server Busy` errors. The script implements an exponential backoff retry mechanism. - **2D Similarity**: Uses exact structural bit-vector fingerprints. Stereochemical and 3D properties do not strongly affect the score. - **Network**: Internet access is required. --- --- **Author:** Bowen Deng **Contact:** [GitHub @learningmatter-mit](https://github.com/learningmatter-mit)
Quelle prüfen
Preis und Betriebskosten
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- Lizenz
- MIT
- Preis unbestätigt
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Skill-Quelle erfasst
Ein Anleitungspfad ist erfasst. Das ist kein Ausführungstest und keine Sicherheits- oder Kompatibilitätsgarantie.
Vor Installation prüfen: Automatische Installation vermeiden
Lizenz: MIT
- Dependency or permission surface needs review
- Permission surface may require sandboxing
- The SKILL.md excerpt shows an incomplete line in the script (e.g., 'elif' with no following code), but this is likely due to truncation in the provided excerpt and not a real issue.
- Quality score needs review
- Permission surface needs review: secrets or environment access, shell or command execution
- Stars/forks activity: 161 stars, 24 forks; issue activity unavailable in current metadata
- Dependency/runtime risk: command execution surface, credential or environment access
- Permission surface: secrets or environment access, shell or command execution
Tools sind Metadatenhinweise, keine getestete Kompatibilität. Prompts sind Vorschläge.
Mit einer kleinen Aufgabe beginnen
- 1Quelle lesen und Eingaben, Ergebnisse, Abhängigkeiten sowie Berechtigungen prüfen.
- 2Agent um einen Plan bitten. Einrichtung und Kosten vor einem isolierten Test genehmigen.
- 3Ergebnisse und geänderte Dateien prüfen. Nur tatsächliche Ausführungen melden und die Quellrevision aufbewahren.
Prüfe Abhängigkeiten, API-Schlüssel und externe Kosten in der Quelle. Öffentliche Repositories bedeuten nicht, dass alle Dienste kostenlos sind.
Quelle und Nutzungshinweise
Metadaten und Prüfungen dienen der Orientierung. Beliebtheit, Quellenerfassung und erfolgreiche Ausführung sind verschiedene Fakten.
- Quell-Repository
- learningmatter-mit/AtomisticSkills
- Lizenz
- MIT
- Version
- 1.0.0
- Letzter GitHub-Push
- 3. Sept. 2026
- Verzeichnis aktualisiert
- 6. Sept. 2026
Version aus den Verzeichnismetadaten; Releases der Quelle prüfen.
Qualität
66/100
Vielversprechend
Vertrauen
60/100
Nur Sandbox
Audit
73/100
Prüfung nötig
- Dependency or permission surface needs review
- Permission surface may require sandboxing
- The SKILL.md excerpt shows an incomplete line in the script (e.g., 'elif' with no following code), but this is likely due to truncation in the provided excerpt and not a real issue.
- Quality score needs review
- Permission surface needs review: secrets or environment access, shell or command execution
- Stars/forks activity: 161 stars, 24 forks; issue activity unavailable in current metadata
- Dependency/runtime risk: command execution surface, credential or environment access
- Permission surface: secrets or environment access, shell or command execution
- Verified installs
- —
- Ergebnisse
- —
Kopieren ist keine Installation. Zahlen benötigen eine Erfolgsmeldung und garantieren keine allgemeine Qualität.
Agent-Zugang
Die Registry API stellt Entscheidungs-, Vertrauens-, Audit-, Use-Case- und Installationssignale ohne UI-Scraping bereit.
Weitere Details
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}Für Ersteller
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