BrowseSAP Cloud Application Programming Model
Everything in CAP
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Error handlingSAP and community
@sap/cds@sap/cdsThe CAP Node.js runtime, which compiles the CDS model, serves the services declared in it, answers generic requests before any handler runs, and loads every cds-plugin.sap official, cap
CAP Node.js runtime
GraphQLSAP only
@cap-js/graphql@cap-js/graphqlA protocol adapter that generates a GraphQL schema from the model and serves it, so the same services answer GraphQL without a second definition of them.sap official, cap
GraphQL protocol adapter generated from the CDS model
Metadata publishingSAP and community
@cap-js-community/common@cap-js-community/commonSix independent features for CAP services in one package: replication cache, migration check, rate limiting, a Redis client broker, a local HTML5 repository and a CDM builder.community org, cap
Six CAP features in one package, from replication cache to rate limits
It is a bundle, not a plugin with one job. Depending on it for one feature brings the rest.
@cap-js/asyncapi@cap-js/asyncapiExports AsyncAPI documents describing the events a CAP service emits and consumes.sap official, cap
Exports AsyncAPI documents for a CAP service's events
@cap-js/ord@cap-js/ordGenerates Open Resource Discovery documents from a CAP model.sap official, cap
Generates Open Resource Discovery documents from a CAP model
@sap/cds@sap/cdsThe CAP Node.js runtime, which compiles the CDS model, serves the services declared in it, answers generic requests before any handler runs, and loads every cds-plugin.sap official, cap
CAP Node.js runtime
com.sap.cds:cds-feature-ordcom.sap.cds:cds-feature-ordGenerates Open Resource Discovery (ORD) documents from a CAP Java application's model, a single entry point that a static metadata catalog or a runtime landscape inspection can read.sap official, cap
Generates Open Resource Discovery documents from a CAP Java model
ODataSAP and community
@cap-js-community/odata-v2-adapter@cap-js-community/odata-v2-adapterExposes a CAP service as OData V2 for clients that cannot move to V4.community org, cap
Exposes a CAP service as OData V2
@odatano/core@odatano/coreA CAP plugin that serves the Cardano blockchain as OData V4, giving enterprise-shaped access to a public chain, funded through Cardano Catalyst.independent, cap
CAP plugin serving the Cardano blockchain as OData V4
@odatano/nightgate@odatano/nightgateIndexes the Midnight blockchain and submits transactions to it from CAP, exposed as OData V4, with command-line tools for schema deltas, key rotation and migration.independent, cap
CAP plugin indexing the Midnight blockchain, exposed as OData V4
@root3287/cap-segw@root3287/cap-segwA CAP build tool that compiles a CDS service into the ABAP Model Provider and Data Provider classes a SAP Gateway SEGW project expects, for OData V4 by default or V2.independent, cap
Compiler from a CDS service to SEGW model and data provider classes
The generated files are copied or deployed into the ABAP system by hand, the fourth step of its own usage list, so nothing keeps an activated service in step with the model it was generated from. Its peer dependency is `@sap/cds` ^9.8, so it does not install into a project on an earlier CAP release.
@sap/cds@sap/cdsThe CAP Node.js runtime, which compiles the CDS model, serves the services declared in it, answers generic requests before any handler runs, and loads every cds-plugin.sap official, cap
CAP Node.js runtime
bookshop-demobookshop-demoSimple CDS bookshop — the reference model most CAP explanations build on.independent, cap
Simple CDS bookshop model used across CAP explanations
Neither the package manifest nor the repository tree declares a licence.
OpenAPISAP and community
@cap-js/openapi@cap-js/openapiTurns a CDS service into an OpenAPI document, derived from the model so the description cannot drift from what is served.sap official, cap
Generates OpenAPI documents from a CDS service
cds-swagger-ui-expresscds-swagger-ui-expressServes a CAP service's OpenAPI definition as a browsable Swagger UI, which is the page @cap-js/openapi's document does not come with.independent, cap
Swagger UI for a CAP service's OpenAPI definition
Pagination and streamingSAP only
@sap/cds@sap/cdsThe CAP Node.js runtime, which compiles the CDS model, serves the services declared in it, answers generic requests before any handler runs, and loads every cds-plugin.sap official, cap
CAP Node.js runtime
Serve your application over MCPSAP and community
@cap-js/mcp@cap-js/mcpA CAP plugin that serves an @mcp-annotated service over MCP with three generated tools, describe, query and call_action, and writes its endpoint into the local agent's configuration in development.sap official, cap
Exposes CAP services as MCP servers for AI agents
SAP prohibits gateway/proxy use for SAP Application APIs; the Atlas applies that prohibition to CAP wrappers around those APIs. Data changes require application-defined unbound actions, and the adapter supplies no rate limiting, agent-action audit logging, approval workflows or policy enforcement. In beta, with nine releases in the six weeks after the first, so pin it.
@neoimpulse/cap-js-mcp@neoimpulse/cap-js-mcpAn MCP server inside a CAP application, with default tools that read the running model and query entities, plus configurable application tools, prompts and resources.independent, cap
MCP server inside a CAP application with model and query tools
@odatano/core-mcp@odatano/core-mcpMCP server exposing ODATANO — the Cardano-to-OData bridge built on CAP — to an agent, so the chain is reachable as tools rather than as a REST client.independent, cap
MCP server exposing the ODATANO Cardano-to-OData bridge as tools
The repository the package declares has been deleted — verified against the GitHub API, not just a failed fetch. The package is still on npm, so it installs; the source it was published from is no longer readable, which is a harder thing to discover than a stale version number.
@odatano/nightgate-mcp@odatano/nightgate-mcpMCP server exposing NIGHTGATE, the Midnight blockchain attestation layer, as agent tools — the companion to the CAP indexer plugin of the same name.independent, cap
MCP server exposing the NIGHTGATE Midnight attestation layer
xtravelsxtravelsA travel-booking application built on the master data that xflights publishes, composing another package's schema into its own rather than owning master data itself.sap official, cap
CAP travel-booking app built on xflights master data
CAP in the age of AI #5 - agents wrap-upCAP in the age of AI #5 - agents wrap-upThe agents topic closed out on what sits around the agent rather than inside it, now that the documentation has moved into capire. The chat preview's session is persisted in the database rather than kept in memory, traces go out through @cap-js/telemetry to a self-hosted MLflow under the OpenTelemetry conventions for generative AI, and the panel is explicit that @agent reuses the MCP adapter's code programmatically without serving an MCP endpoint. It ends in the xtravels sample, where a travel agent delegates to a hotel-service sub-agent and reaches a separately started flight service over MCP through the service binding CAP resolves anyway. Earlier in the hour the same agent answers from a model running on the presenter's laptop, reached as an OpenAI-compatible endpoint.published 2026-10-02
CAP in the age of AI #7 - vector embeddings wrap-upCAP in the age of AI #7 - vector embeddings wrap-upThe same embeddings model taken from SQLite to SAP HANA Cloud, then handed to an agent. Locally it is @cap-js/ai that adds the vector functions SQLite lacks and downloads an all-MiniLM L6v2 ONNX model on first start; on HANA natural language processing has to be switched on, the model name is a mandatory argument, the vectors it returns are 768 dimensions, and dimensions must match on both sides of a comparison. HANA itself can be given SAP AI Core as a remote source for other embedding models, which a CDS.ql expression has to inject because the postfix notation only takes what the CDS model holds, and the hour ends with a search function over cosine similarity exposed over @cap-js/mcp, so an agent asked about low output from solar panels calls semantic search instead of writing the query itself.published 2026-10-16
CAP-level Data FederationCAP-level Data FederationA Devtoberfest 2026 session (CAP-31) on letting one CAP application read another's data as if it were local. The modelling half is the same for both answers, which is why the two technical edges hold: the provider defines an API service and exports it with CDS export as an npm package carrying the model, mock data and translated texts, the consumer imports it and puts consumption views on top, and only then is it wired either as service-level replication that copies the rows into local tables each time the server starts, or over the SAP HANA synonyms that cds-federation-synonyms generates, with HDI grants on the provider side and a service replacement that redirects each synonym from its mock table to the provider's container. It is worked through on xflights and xtravels, including the local run where CDS watch mocks the imported service from the CSV files inside the package.SAP Developers, published 2026-10-02
SAP Meets the Agentic Web: CAP MCP - UI5 WebMCPSAP Meets the Agentic Web: CAP MCP - UI5 WebMCPA Devtoberfest 2026 session (CAP-42) that puts MCP and WebMCP side by side: MCP exposes a backend to an agent, WebMCP exposes the tools of a web page to whatever agent arrives at it, and only Chrome behind a flag and Cloudflare's Kite browser support the second one today. The CAP half starts with two agents scraping a Fiori elements app with Playwright and browser dev tools, then annotates the catalogue service with the MCP protocol through @cap-js/mcp, after which the agent calls the generated describe tool instead of parsing pages. The UI5 half registers a search-authors tool on the browser's model context API inside the same app, with the cross-origin isolation header the API requires, and lists it through the WebMCP Chrome extension — the agent run against it ends on an exhausted Gemini key rather than a result.published 2026-10-16
What's in Daniel Hutzel's brain?What's in Daniel Hutzel's brain?A Devtoberfest 2026 session in the building-apps track, in which Daniel Hutzel and DJ Adams work through what the CAP team is building for agents. A bookshop gets an MCP endpoint beside its OData one from a single annotation, with the plugin writing the coding agent's configuration itself; in the xt-travels sample five services that know nothing about each other are served over MCP and an agent does the orchestration the hand-built UI and its value helps used to do. Hutzel then annotates a service as an agent so the ReAct loop and the choice of model move into the CAP service, and finally drops MCP for a skill that teaches the agent CQL instead, which is where the edges to Serve your application over MCP, Agent tooling and Agent guidance come from. The mechanism under all of it, a plugin file in the package root and event handlers that can be added to any CAP service, is the edge to Plugin authoring.published 2026-10-02
WebSocketCommunity only
@cap-js-community/websocket@cap-js-community/websocketA WebSocket adapter for CDS services, speaking either the plain WebSocket protocol or Socket.IO, so a service can push instead of being polled.community org, cap
WebSocket and Socket.IO adapter for CDS services
From Inbox to Quotation: An AI-Assisted Sales Workbench in React on SAP CAPFrom Inbox to Quotation: An AI-Assisted Sales Workbench in React on SAP CAPA Devtoberfest 2026 session walking live through a sales workbench that turns an incoming customer e-mail into a quotation in S/4HANA, built as a React UI on CAP. It shows the filterable request inbox, the extracted configuration properties with a confidence indicator per characteristic, the variant configurator rendered in React from a JSON schema the configuration service returns, and the link from a derived value back to the place in the e-mail it was read from; the stated reason for the stack is that CAP keeps authentication, destinations and deployment the same in every project, which is where frontend boundary holds. The inbox grows while a user works because a CAP WebSocket plugin pushes new requests into the list — WebSocket.SAP Developers, published 2026-10-09
CI/CD pipelinesSAP only
@sap/cds-dk@sap/cds-dkThe command line client and development toolkit for CAP projects, with the commands cds build, cds deploy, cds watch and cds add among them.sap official, cap
Command line client and development toolkit for CAP
cf-setupcf-setupGitHub Action that sets up the Cloud Foundry CLI in a workflow.sap official, cap
GitHub Action setting up the Cloud Foundry CLI
cap-java-childcap-java-childThe consumer side of a promotion model for CAP Java: a parent pom pinned to a fixed version, Renovate opening the bump as a pull request, the application's own tests as the gate, and auto-merge only on green.independent, cap
Consumer side of a CAP Java parent pom promotion model with Renovate
Neither the package manifest nor the repository tree declares a licence.
DebuggingSAP and community
@cap-js/console@cap-js/consoleConnects a running CAP application to the CAP console.sap official, cap
Connects a running CAP application to the CAP console
@cap-js/data-inspector@cap-js/data-inspectorInspects database entities and their contents at the CAP service level.sap official, cap
Inspects database entities and contents at CAP service level
@sap/cds-dk@sap/cds-dkThe command line client and development toolkit for CAP projects, with the commands cds build, cds deploy, cds watch and cds add among them.sap official, cap
Command line client and development toolkit for CAP
com.sap.cds:cds-feature-consolecom.sap.cds:cds-feature-consoleA CAP Java plugin that connects a running application to CAP console, which consumes its remote monitoring data; CAP console itself is installed separately and still being developed.sap official, cap
Connects a running CAP Java app to CAP console for monitoring
Editor supportSAP and community
@sap/cds-lsp@sap/cds-lspLanguage server for CDS — the engine behind completion, navigation and inline errors in every supported editor.sap official, cap
Language server for CDS
@sap/ux-cds-odata-language-server-extension@sap/ux-cds-odata-language-server-extensionAdds the OData annotation features to @sap/vscode-cds, the CDS plug-in for Visual Studio Code: completion, micro-snippets, diagnostics, vocabulary documentation, Go to Definition and an i18n check inside a .cds file.sap official, cap
OData annotation features for the @sap/vscode-cds extension
@sap/vscode-cds@sap/vscode-cdsSAP CDS language support for Visual Studio Code and Business Application Studio, published as an npm library.sap official, cap
CDS language support for VS Code and Business Application Studio
cds-intellijcds-intellijSAP CDS language support for IntelliJ IDEA.sap official, cap
SAP CDS language support for IntelliJ IDEA
GeneratorsSAP and community
@cap-handler/generator@cap-handler/generatorInteractive generator for CAP event handlers: reads the model through the reflection API, asks which service, target and phase, then writes the handler file and wires the import and registration into the service implementation.independent, cap
Interactive generator for CAP event handler files
@sap-ux/cap-config-writer@sap-ux/cap-config-writerSAP's writer module for changing a CAP project's configuration from code, so a tool can add a UI5 app to a project that already exists, returning a mem-fs editor whose commit writes the changes.sap official, cap
Writer module for changing a CAP project's configuration from code
There is nothing to run: it is published for a generator or a script to call, not for a developer to invoke in a project, and it declares Node.js 22 or later.
@sap-ux/create@sap-ux/createSAP Fiori tools as a command: npx @sap-ux/create changes the features of a Fiori project that already exists, through its add, generate, convert, remove, update and change subcommands.sap official, ui5
Command line for changing features of an existing Fiori project
@sap-ux/fe-fpm-writer@sap-ux/fe-fpm-writerA library that writes flexible programming model elements, such as a custom page wired into the app's routing, into a Fiori elements application for OData v4 from Node code.sap official, ui5
Writer of flexible programming model elements into Fiori elements apps
@sap-ux/fiori-generator-shared@sap-ux/fiori-generator-sharedThe shared functions and types the Fiori generators are built from; a dependency of theirs rather than a generator itself.sap official, cap
Shared functions and types of the Fiori generators
@sap-ux/odata-service-writer@sap-ux/odata-service-writerA library that adds an OData service to a UI5 project that already exists, writing the file updates from a config object naming the service url, its OData version and a destination.sap official, ui5
Writer that adds an OData service to an existing UI5 project
@sap/cds-dk@sap/cds-dkThe command line client and development toolkit for CAP projects, with the commands cds build, cds deploy, cds watch and cds add among them.sap official, cap
Command line client and development toolkit for CAP
CAP in the age of AI #7 - vector embeddings wrap-upCAP in the age of AI #7 - vector embeddings wrap-upThe same embeddings model taken from SQLite to SAP HANA Cloud, then handed to an agent. Locally it is @cap-js/ai that adds the vector functions SQLite lacks and downloads an all-MiniLM L6v2 ONNX model on first start; on HANA natural language processing has to be switched on, the model name is a mandatory argument, the vectors it returns are 768 dimensions, and dimensions must match on both sides of a comparison. HANA itself can be given SAP AI Core as a remote source for other embedding models, which a CDS.ql expression has to inject because the postfix notation only takes what the CDS model holds, and the hour ends with a search function over cosine similarity exposed over @cap-js/mcp, so an agent asked about low output from solar panels calls semantic search instead of writing the query itself.published 2026-10-16
LintingSAP and community
@sap-ux/eslint-plugin-fiori-tools@sap-ux/eslint-plugin-fiori-toolsESLint rules from the Fiori tools team, aimed at the parts of a project their generators produce.sap official, cap
ESLint rules for projects the Fiori tools generators produce
Local developmentSAP and community
@cap-js-community/common@cap-js-community/commonSix independent features for CAP services in one package: replication cache, migration check, rate limiting, a Redis client broker, a local HTML5 repository and a CDM builder.community org, cap
Six CAP features in one package, from replication cache to rate limits
It is a bundle, not a plugin with one job. Depending on it for one feature brings the rest.
@sang2x/captools@sang2x/captoolsA CLI of eight CAP development commands aimed at Cloud Foundry workflows, shipped without a repository or README, whose binding step writes resolved VCAP_SERVICES into default-env.json.independent, cap
CLI of CAP development tools for Cloud Foundry workflows
There is no repository and no README: what the eight commands do is only readable from the compiled dist that ships in the package. Three of them — npmrc, install, project — are written for "SimpleMDG" projects rather than for CAP generally, so the reusable part is bind-local, run-local and debug. Seven releases up to July 2026. Its binding step writes the resolved VCAP_SERVICES into default-env.json in the project, where [@sap/cds-dk](artifact:sap-cds-dk) keeps only the place the credentials can be fetched from, so a project using it needs that file kept out of version control.
@sap/cds@sap/cdsThe CAP Node.js runtime, which compiles the CDS model, serves the services declared in it, answers generic requests before any handler runs, and loads every cds-plugin.sap official, cap
CAP Node.js runtime
@sap/cds-dk@sap/cds-dkThe command line client and development toolkit for CAP projects, with the commands cds build, cds deploy, cds watch and cds add among them.sap official, cap
Command line client and development toolkit for CAP
dev-approuterdev-approuterA development-time wrapper for the SAP Application Router that serves UI5 and CDS modules once they are added to the project as dependencies.community org, cap
Dev-time wrapper for the SAP Application Router
approuterapprouterThe showcase for dev-approuter in ui5-ecosystem-showcase: an SAP Application Router in front of two of the repository's apps, started either through the dev-time wrapper or through plain @sap/approuter.community org, cap
Showcase for dev-approuter in front of two UI5 apps
cap-nodejs-dev-envcap-nodejs-dev-envA development container definition for CAP Node.js with @sap/cds-dk and the Cloud Foundry CLI, for use with VS Code's Dev Containers extension or GitHub Codespaces.sap official, cap
Development container definition for CAP Node.js
Model visualisationSAP and community
@sap/cds-dk@sap/cds-dkThe command line client and development toolkit for CAP projects, with the commands cds build, cds deploy, cds watch and cds add among them.sap official, cap
Command line client and development toolkit for CAP
Plugin authoringSAP only
@sap/cds-dk@sap/cds-dkThe command line client and development toolkit for CAP projects, with the commands cds build, cds deploy, cds watch and cds add among them.sap official, cap
Command line client and development toolkit for CAP
commoncommonA CAP plugin that extends @sap/cds/common with enhanced reuse data in .csv, published as a sample of how to write a CAP plugin rather than as something to run in production.sap official, cap
Sample CAP plugin extending @sap/cds/common with reuse data
ordersordersA sample reuse service for managing orders, with its own Fiori UI, written to show how a CAP plugin is built and consumed: embedded in the consuming application or run standalone over OData.sap official, cap
Sample CAP reuse service for orders, with a Fiori UI
Not in production. SAP states it is just a sample, not optimised for performance or security.
DRY CAP – Making Sustainable Solutions Through PluginsDRY CAP – Making Sustainable Solutions Through PluginsA Devtoberfest 2026 building-apps session on packaging the things you would otherwise write twice, from in-house API clients and shared data models to validation logic, as a CAP plugin. The presenter builds one live: a cds-plugin.js next to package.json is what makes CAP notice the plugin at all, an index.cds carries a reusable user context and service that the consuming application projects into its own and protects there, and the plugin registers an Express middleware at a chosen step of the bootstrap to put user properties on the request. A feature-flagging plugin his team already uses closes it, and the whole walkthrough is the edge to Plugin authoring.SAP Developers, published 2026-10-02
What's in Daniel Hutzel's brain?What's in Daniel Hutzel's brain?A Devtoberfest 2026 session in the building-apps track, in which Daniel Hutzel and DJ Adams work through what the CAP team is building for agents. A bookshop gets an MCP endpoint beside its OData one from a single annotation, with the plugin writing the coding agent's configuration itself; in the xt-travels sample five services that know nothing about each other are served over MCP and an agent does the orchestration the hand-built UI and its value helps used to do. Hutzel then annotates a service as an agent so the ReAct loop and the choice of model move into the CAP service, and finally drops MCP for a skill that teaches the agent CQL instead, which is where the edges to Serve your application over MCP, Agent tooling and Agent guidance come from. The mechanism under all of it, a plugin file in the package root and event handlers that can be added to any CAP service, is the edge to Plugin authoring.published 2026-10-02
Seed dataSAP and community
@sap/cds@sap/cdsThe CAP Node.js runtime, which compiles the CDS model, serves the services declared in it, answers generic requests before any handler runs, and loads every cds-plugin.sap official, cap
CAP Node.js runtime
TestingSAP and community
@cap-js/cds-test@cap-js/cds-testTest support for CAP Node.js, installed as a dev dependency: it starts the project's server for the test, hands the test an HTTP client bound to it, and carries the assertions.sap official, cap
Test support for CAP Node.js: server start, HTTP client, assertions
@sap-ux/fe-mockserver-plugin-cds@sap-ux/fe-mockserver-plugin-cdsLets the Fiori Elements mock server take a CDS file as its metadata source, so a UI is developed against the real model before a service exists.sap official, cap
Fiori Elements mock server plugin taking a CDS file as metadata
TypingSAP and community
@cap-js/cds-typer@cap-js/cds-typerGenerates TypeScript types from a CDS model.sap official, cap
Generates TypeScript types from a CDS model
@cap-js/cds-types@cap-js/cds-typesType definitions for the CAP Node.js SDK.sap official, cap
Type definitions for the CAP Node.js SDK
SAP-NPM-API-collectionSAP-NPM-API-collectionCollected API documentation extracted from SAP-published npm packages, including the ones that ship no public repository.independent, cap
API documentation extracted from SAP-published npm packages
Under no capability
ui5-bookshop-viewerui5-bookshop-viewerA standalone UI5 app in ui5-ecosystem-showcase that shows the cds-bookshop CAP server consumed inside the UI5 server through ui5-middleware-cap.community org, ui5
UI5 app consuming the cds-bookshop server via ui5-middleware-cap