Chemaxon
Chemaxon is a cheminformatics software company, now part of Certara (chemaxon.com redirects to certara.com/chemaxon), offering 'a complete cheminformatics workbench for molecule design, property calculation, search, data management, and more.' Its products include Marvin chemical drawing, JChem Base and JChem Microservices, Design Hub, Compound Registration, calculators and standardizer toolkits, with developer documentation at docs.chemaxon.com and Java, .NET and Python API references at apidocs.chemaxon.com.
Chemaxon publishes 40 API contracts indexed on the APIs.io network, including Amendment API, Audit API, Auto Mapper API, and 37 more. Tagged areas include Company, Cheminformatics, Chemistry, Drug Discovery, and Life Sciences.
The Chemaxon catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.
Chemaxon’s developer surface includes changelog, sandbox, authentication, documentation, API reference, support, engineering blog, and 33 more developer resources.
Kin Score
Standards implemented 3
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
APIs 40
Individual APIs this provider publishes, each with its own machine-readable definition.
Chemaxon Amendment API
Amendment related operations
Chemaxon Audit API
Audit related operations
Chemaxon Auto Mapper API
This controller lets you assign mapping values to atoms
Chemaxon Builtin Checker API
The Builtin Checker API from Chemaxon — 65 operation(s) for builtin checker.
Chemaxon Bulk amendment API
Bulk amendment related operations
Chemaxon Bulk registration API
Bulk registration related operations
Chemaxon Bulk upload API
Bulk upload related operations
Chemaxon Calculator API
The Calculator API from Chemaxon — 25 operation(s) for calculator.
Chemaxon Checker API
The Checker API from Chemaxon — 1 operation(s) for checker.
Chemaxon Checker Descriptor API
The Checker Descriptor API from Chemaxon — 4 operation(s) for checker descriptor.
Chemaxon Checker Fixer API
The Checker Fixer API from Chemaxon — 3 operation(s) for checker fixer.
Chemaxon Chemaxon built-in reactions API
The Chemaxon built-in reactions API from Chemaxon — 2 operation(s) for chemaxon built-in reactions.
Chemaxon Chemical-term evaluation API
The Chemical-term evaluation API from Chemaxon — 1 operation(s) for chemical-term evaluation.
Chemaxon CIP Stereo Calculator API
The CIP Stereo Calculator API from Chemaxon — 1 operation(s) for cip stereo calculator.
Chemaxon Color substructure hits API
Endpoint to color substructure hits in molecules
Chemaxon Compound retriever API
Compound retriever related operations
Chemaxon Database version management API
Endpoints to monitor and manage the different database versions and the automatic update process (the so-called "reindexing") from one version to another
Chemaxon Db Work queue handler controller API
Use this controller to handle async and background tasks
Chemaxon Dictionary API
Dictionary related operations.
Chemaxon Downstream API
Downstream related operations
Chemaxon Extractor API
Endpoint to extract textbox content from molecules
Chemaxon Forms API
Information about Forms and Fields
Chemaxon Fragmenter API
These endpoints can cut molecules into fragments
Chemaxon JSON Converter API
The JSON Converter API from Chemaxon — 2 operation(s) for json converter.
Chemaxon Markush API
The Markush API from Chemaxon — 1 operation(s) for markush.
Chemaxon Molecule Cleaner API
The Molecule Cleaner API from Chemaxon — 1 operation(s) for molecule cleaner.
Chemaxon Molecule format converter API
The Molecule format converter API from Chemaxon — 13 operation(s) for molecule format converter.
Chemaxon Molecule Standardizer API
The Molecule Standardizer API from Chemaxon — 4 operation(s) for molecule standardizer.
Chemaxon Molecule type information API
Use this service to get information about the molecule types. These types specify what to do with a structure during search. You can fine tune the search logic with different ar...
Chemaxon Multistep reaction controller API
The Multistep reaction controller API from Chemaxon — 2 operation(s) for multistep reaction controller.
Chemaxon R-group decomposition API
Use this controller to create r-group decompositions of targets for given query.
Chemaxon Reaction Converter API
The Reaction Converter API from Chemaxon — 1 operation(s) for reaction converter.
Chemaxon Reactor API
The Reactor API from Chemaxon — 2 operation(s) for reactor.
Chemaxon Reactor Work queue handler controller API
Use this controller to handle async and background tasks
Chemaxon Registration API
Registration related operations
Chemaxon Search API
Structure search and export related operations.
Chemaxon Standardized molecule search API
Endpoints to search for query structure in specified list of target structures while using standardization on structures
Chemaxon Store and search molecules and non chemical data API
Use this controller to manage molecule collections that also has non chemical data assigned to structures. Create (or delete) a collection (a.k.a. ''table''). Insert / delete / ...
Chemaxon Structure details API
Structure details and matching related operations.
Chemaxon Submission API
Structure search and export related queries.
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Agent Skills 6
Packaged agent skills for driving this provider's APIs from an AI assistant.
calculate-molecular-properties
AGENT SKILLcheck-and-fix-structures
AGENT SKILLconvert-chemical-structures
AGENT SKILLregister-compound
AGENT SKILLrun-reaction
AGENT SKILLsearch-structure-database
AGENT SKILLChemaxon API pricing
Pricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Chemaxon Rate Limits
RATE LIMITSTerms of Service 1
What its API terms permit and prohibit, quoted from its own page.
Data License 1
How its data and outputs may be reused, quoted from its own terms.
Semantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Chemaxon Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.
Chemaxon API Rules
SPECTRALOpenAPI Overlays 15
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Chemaxon Calculations Overlay
DERIVEDChemaxon Database Search Overlay
DERIVEDChemaxon Input Output Overlay
DERIVEDChemaxon Reactor Overlay
DERIVEDChemaxon Task Manager Overlay
DERIVEDScroll for all 15
JSON Schema 82
Standalone JSON Schema definitions for this provider's data models.
AdvancedAutoRegisterRequest
JSON SCHEMAAromatizerRequest
JSON SCHEMAAuditSummary
JSON SCHEMAAutoMapperRequest
JSON SCHEMABatchMolConvertRequest
JSON SCHEMABatchMolConvertResponseElement
JSON SCHEMABulkAmendStatusRequestParams
JSON SCHEMABulkInsertRequest
JSON SCHEMABulkloaderAnalyzerRequest
JSON SCHEMABulkloaderResponse
JSON SCHEMACalculatorsStructureRequestChemTermRequest
JSON SCHEMACalculatorsStructureRequestNmrRequest
JSON SCHEMACalculatorsStructureRequestPkaRequest
JSON SCHEMACheckerDescriptionResponse
JSON SCHEMACheckerResponse
JSON SCHEMACheckerWithFixersDescriptionResponse
JSON SCHEMACipStereoCalculatorRequest
JSON SCHEMACipStereoCalculatorResponse
JSON SCHEMADatabaseVersionStatusResponse
JSON SCHEMADbAddStructuresRequest
JSON SCHEMADbTaskDescriptor
JSON SCHEMADictionary
JSON SCHEMADownloadLog
JSON SCHEMADownstreamMessageListResponse
JSON SCHEMADownstreamStatusResponse
JSON SCHEMAElementalAnalysisCalculatorsStructureRequest
JSON SCHEMAEnumerationRequest
JSON SCHEMAExportSearchRequest
JSON SCHEMAFailedStructuresResponse
JSON SCHEMAFileDescriptor
JSON SCHEMAFixerDescriptionResponse
JSON SCHEMAForm
JSON SCHEMAFullFragmentCombinedSearchRequest
JSON SCHEMAFullFragmentSearchRequest
JSON SCHEMAHitDisplayRequest
JSON SCHEMAHitDisplayResponse
JSON SCHEMAHydrogenizerRequest
JSON SCHEMAInsertMoleculesResponse
JSON SCHEMAItemSearchResult
JSON SCHEMALeverWrapper
JSON SCHEMAMarkushFragmentationResponse
JSON SCHEMAMarkushReactionFragmentationResponse
JSON SCHEMAMetalloceneCheckerResponse
JSON SCHEMAMolAppenderRequest
JSON SCHEMAMolConvertRequest
JSON SCHEMAMolConvertResponse
JSON SCHEMAMolSplitterRequest
JSON SCHEMAMolWithPropertiesAppenderRequest
JSON SCHEMAMoleculeTypeResponse
JSON SCHEMAMonitorResponse
JSON SCHEMAMultistepReactionDecomposerRequest
JSON SCHEMAMultistepReactionRequest
JSON SCHEMAPublishTreesRequest
JSON SCHEMAReactionConverterRequest
JSON SCHEMAReactionDetailedResponse
JSON SCHEMAReactionFragmentationResponse
JSON SCHEMAReactionListResponse
JSON SCHEMAReactionRequestCombinatorialRequestOptions
JSON SCHEMAReactionRequestReactRequestOptions
JSON SCHEMAReactorAddStructuresRequest
JSON SCHEMAReactorResponse
JSON SCHEMAReactorTaskCreationRequest
JSON SCHEMAReactorTaskDescriptor
JSON SCHEMARegistryStructure
JSON SCHEMARgroupDecomposerRequest
JSON SCHEMASearchRequest
JSON SCHEMAStandardizedDuplicateFilterRequest
JSON SCHEMAStandardizedMolSearchRequest
JSON SCHEMAStatelessSimilaritySearchRequest
JSON SCHEMAStructureIdPair
JSON SCHEMAStructureWithSimilarity
JSON SCHEMASubmission
JSON SCHEMASubmissionSearchRequestParams
JSON SCHEMASubmissionStatus
JSON SCHEMASubstructureCombinedSearchRequest
JSON SCHEMASubstructureSearchRequest
JSON SCHEMAUploadSubmissionStatistics
JSON SCHEMAValidateAutoRegistrationRequest
JSON SCHEMAXmlBasedCheckerFixerRequest
JSON SCHEMAScroll for all 82
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access (API Evangelist recommendations) 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 2
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 9
Pagination, idempotency, versioning, errors, and events
Scroll for all 9
Build 4
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 4
Properties that don't map to a standard resource type
Source (apis.yml)
Chemaxon API — frequently asked questions
Does Chemaxon have an API?
Yes. APIs.io lists 40 APIs from Chemaxon, including Chemaxon Amendment API, Chemaxon Audit API and Chemaxon Auto Mapper API, and 37 more.
Is there an OpenAPI specification for the Chemaxon API?
Yes. APIs.io indexes 40 OpenAPI specifications for Chemaxon, each linked for download from this page.
How do I authenticate with the Chemaxon API?
Chemaxon documents its authentication (4 schemes). The details are profiled on APIs.io as Chemaxon Authentication.
Is the Chemaxon API ready for AI agents?
Chemaxon has a Kin Score of 50.1 out of 100 (developing) and an Agent Readiness score of 43.7 (agent-ready), scored by API Evangelist on 2026-11-13.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.