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EMBL-EBI ChEMBL Bioactive Molecule Search
x402
EMBL-EBI ChEMBL Bioactive Molecule Search is a paid API for AI agents from api.healthtravel-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).
Search the ChEMBL database for bioactive molecules by name or term, returning ChEMBL ID, preferred name, clinical phase, molecule type, molecular weight, canonical SMILES, first approval year, and ATC codes.
Price / call$0.002
Success—
StatusUnknown
How this service works
EMBL-EBI ChEMBL molecule search: ChEMBL ID, preferred name, maximum clinical phase, molecule type, molecular weight, canonical SMILES, first approval year and ATC codes. Up to 20 molecules per call, with total match count.
Output
A list of up to 20 matching molecules (default 5), each with: ChEMBL ID, preferred name, maximum clinical phase (0–4), molecule type (e.g. Small molecule, Protein), molecular weight, canonical SMILES string, first approval year, and ATC codes. Also includes the total count of matching records in the ChEMBL database.
Example use cases
Drug candidate clinical phase lookup
“I'm researching gefitinib — can you pull its ChEMBL entry and tell me the maximum clinical phase it's reached, its molecule type, and when it was first approved?”
Cheminformatics SMILES retrieval
“I need the canonical SMILES and molecular weight for ibuprofen from ChEMBL so I can run a docking simulation — can you fetch that?”
ATC code and drug classification check
“Can you search ChEMBL for 'atorvastatin' and return its ATC codes, ChEMBL ID, and molecule type? Give me up to 10 matches.”
Technical details
Endpoint
GEThttps://api.healthtravel-api.workers.dev/api/health/chEMBL-bioactive-molecules?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need structured ChEMBL database records for named drug compounds, including regulatory and chemical metadata like SMILES, clinical phase, ATC codes, and approval year. Prefer over PubChem lookup (also on this provider) when you specifically need ChEMBL IDs, clinical phase data, or ATC classifications. Best for pharmaceutical research, drug discovery pipelines, and cheminformatics workflows requiring ChEMBL-sourced data.
Side effects
- Query term too short (under 2 characters) or too long (over 100 characters) returns a validation error
- No matching molecules found returns an empty result list with total count of 0
- ChEMBL upstream API unavailable returns a 5xx error
- Invalid 'max' parameter value (outside 1–20) may return an error or be clamped to defaults
- Special characters other than letters, digits, spaces, and hyphens may be rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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