name: ChEMBL description: ChEMBL is a manually curated database of bioactive molecules with drug-like properties, maintained by the EMBL-EBI. It provides a REST API for accessing bioactive molecules, drug targets, bioactivity data, approved drugs, clinical trial compounds, and cheminformatics utilities to support drug discovery research. image: https://www.ebi.ac.uk/chembl/static/chembl/img/chembl_logo.png url: https://www.ebi.ac.uk/chembl/ created: '2026-06-13' modified: '2026-06-13' specificationVersion: '0.19' apis: - name: ChEMBL Data API description: REST API providing access to ChEMBL database content including bioactive molecules, drug targets, bioactivity measurements, approved drugs, assay data, and clinical trial compound information. image: https://www.ebi.ac.uk/chembl/static/chembl/img/chembl_logo.png humanURL: https://chembl.gitbook.io/chembl-interface-documentation/web-services/chembl-data-web-services baseURL: https://www.ebi.ac.uk/chembl/api/data/ version: ChEMBL_37 tags: - Drug Discovery - Bioactivity - Molecules - Cheminformatics - Life Sciences properties: - type: Documentation url: https://chembl.gitbook.io/chembl-interface-documentation/web-services/chembl-data-web-services - type: OpenAPI url: https://www.ebi.ac.uk/chembl/api/data/docs - type: OpenAPI url: openapi/openapi.json - type: TermsOfService url: https://www.ebi.ac.uk/about/terms-of-use/ contact: - FN: ChEMBL Team email: chembl-help@ebi.ac.uk url: https://www.ebi.ac.uk/chembl/ resources: - name: Activity description: Activity values recorded in an assay url: https://www.ebi.ac.uk/chembl/api/data/activity - name: Assay description: Experimental protocol and result details from source documents and datasets url: https://www.ebi.ac.uk/chembl/api/data/assay - name: ATC Classification description: WHO Anatomical Therapeutic Chemical classification system for drugs url: https://www.ebi.ac.uk/chembl/api/data/atc_class - name: Binding Site description: Target binding site definitions used in assays url: https://www.ebi.ac.uk/chembl/api/data/binding_site - name: Biotherapeutic description: Biotherapeutic molecules including HELM notation and sequence data url: https://www.ebi.ac.uk/chembl/api/data/biotherapeutic - name: Cell Line description: Cell line information used in assays url: https://www.ebi.ac.uk/chembl/api/data/cell_line - name: ChEMBL ID Lookup description: Identify entity type for a given ChEMBL ID url: https://www.ebi.ac.uk/chembl/api/data/chembl_id_lookup - name: Compound Record description: Occurrence of a compound in a specific document url: https://www.ebi.ac.uk/chembl/api/data/compound_record - name: Compound Structural Alert description: Structural anomalies and alerts identified in compounds url: https://www.ebi.ac.uk/chembl/api/data/compound_structural_alert - name: Document description: Source documents and datasets from which assay data is derived url: https://www.ebi.ac.uk/chembl/api/data/document - name: Document Similarity description: Documents similar to a given source document url: https://www.ebi.ac.uk/chembl/api/data/document_similarity - name: Document Term description: Keywords extracted from a document using the TextRank algorithm url: https://www.ebi.ac.uk/chembl/api/data/document_term - name: Drug description: Approved drugs information including applicants, patent numbers, and research codes url: https://www.ebi.ac.uk/chembl/api/data/drug - name: Drug Indication description: Drug-disease associations with clinical trial and regulatory references url: https://www.ebi.ac.uk/chembl/api/data/drug_indication - name: Drug Warning description: Safety information for withdrawn or black-box warned drugs url: https://www.ebi.ac.uk/chembl/api/data/drug_warning - name: GO Slim description: Gene ontology slim classifications for targets url: https://www.ebi.ac.uk/chembl/api/data/go_slim - name: Image description: SVG molecular structure image representations url: https://www.ebi.ac.uk/chembl/api/data/image - name: Mechanism description: Mechanism of action information for approved drugs url: https://www.ebi.ac.uk/chembl/api/data/mechanism - name: Metabolism description: Metabolic pathways with substrate, product, and enzyme references url: https://www.ebi.ac.uk/chembl/api/data/metabolism - name: Molecule description: Molecule information including properties, structural representations, and synonyms url: https://www.ebi.ac.uk/chembl/api/data/molecule - name: Molecule Form description: Parent-salt relationships for molecules url: https://www.ebi.ac.uk/chembl/api/data/molecule_form - name: Organism description: Organism classification information url: https://www.ebi.ac.uk/chembl/api/data/organism - name: Protein Classification description: Target protein family classification hierarchy url: https://www.ebi.ac.uk/chembl/api/data/protein_class - name: Similarity description: Molecule similarity searching using Tanimoto coefficient url: https://www.ebi.ac.uk/chembl/api/data/similarity - name: Source description: Source information for documents and datasets url: https://www.ebi.ac.uk/chembl/api/data/source - name: Status description: API operational status and ChEMBL database version information url: https://www.ebi.ac.uk/chembl/api/data/status - name: Substructure description: Molecular substructure searching url: https://www.ebi.ac.uk/chembl/api/data/substructure - name: Target description: Targets (protein and non-protein) defined in assays url: https://www.ebi.ac.uk/chembl/api/data/target - name: Target Component description: Target sequence information and component details url: https://www.ebi.ac.uk/chembl/api/data/target_component - name: Target Relation description: Inter-target relationships url: https://www.ebi.ac.uk/chembl/api/data/target_relation - name: Tissue description: Tissue classification information url: https://www.ebi.ac.uk/chembl/api/data/tissue - name: X-Ref description: Cross-references to external chemical and biological databases url: https://www.ebi.ac.uk/chembl/api/data/xref_source - name: ChEMBL Cheminformatics Utilities API description: Cheminformatics utility services (ChEMBL Beaker) providing chemical structure standardization, physico-chemical property calculation, format conversion, and structural analysis tools powered by RDKit and the ChEMBL Structure Pipeline. image: https://www.ebi.ac.uk/chembl/static/chembl/img/chembl_logo.png humanURL: https://chembl.gitbook.io/chembl-interface-documentation/web-services/cheminformatic-utils-web-services baseURL: https://www.ebi.ac.uk/chembl/api/utils/ version: ChEMBL_37 tags: - Cheminformatics - Structure Standardization - Drug Discovery - Life Sciences properties: - type: Documentation url: https://chembl.gitbook.io/chembl-interface-documentation/web-services/cheminformatic-utils-web-services - type: OpenAPI url: https://www.ebi.ac.uk/chembl/api/utils/docs - type: TermsOfService url: https://www.ebi.ac.uk/about/terms-of-use/ contact: - FN: ChEMBL Team email: chembl-help@ebi.ac.uk url: https://www.ebi.ac.uk/chembl/ resources: - name: Standardize description: Apply ChEMBL Structure Pipeline standardization to molecules url: https://www.ebi.ac.uk/chembl/api/utils/standardize - name: Check description: Check a molecule for issues using ChEMBL Structure Pipeline url: https://www.ebi.ac.uk/chembl/api/utils/check - name: Exclude description: Identify structures that would be excluded from ChEMBL url: https://www.ebi.ac.uk/chembl/api/utils/exclude - name: Get Parent description: Remove salts and solvates using ChEMBL Structure Pipeline url: https://www.ebi.ac.uk/chembl/api/utils/getParent - name: Descriptors description: Calculate all RDKit physico-chemical descriptors for a molecule url: https://www.ebi.ac.uk/chembl/api/utils/descriptors - name: ChEMBL Descriptors description: Calculate ChEMBL-specific physico-chemical descriptors url: https://www.ebi.ac.uk/chembl/api/utils/chemblDescriptors - name: Status description: Operational status and version of the cheminformatics utilities service url: https://www.ebi.ac.uk/chembl/api/utils/status common: - type: Authentication value: None - public API, no key required - type: Formats value: JSON, XML, YAML, SDF (compounds), SVG (images) - type: Pagination value: Offset-based pagination with configurable limit (default 20 records per page) - type: Filtering value: URL-friendly query language with operators including exact, contains, startswith, endswith, regex, gt/gte, lt/lte, range, in, isnull, and full-text search - type: License url: https://creativecommons.org/licenses/by-sa/3.0/ value: Creative Commons Attribution-ShareAlike 3.0 Unported - type: TermsOfService url: https://www.ebi.ac.uk/about/terms-of-use/ - type: PythonClient url: https://github.com/chembl/chembl_webresource_client value: Official Python client available via pip install chembl_webresource_client - type: Status url: https://www.ebi.ac.uk/chembl/api/data/status/ maintainers: - FN: ChEMBL Team email: chembl-help@ebi.ac.uk url: https://www.ebi.ac.uk/chembl/ tags: - Drug Discovery - Bioactivity - Molecules - Cheminformatics - Life Sciences - Bioinformatics - Pharmacology - EMBL-EBI