aid: aggregation name: Aggregation kind: topic description: >- An index and topic collection covering API aggregation, marketplaces, directories, unified APIs, and catalog platforms. API aggregation brings together multiple APIs under a single interface, simplifying integration, reducing maintenance overhead, and enabling consistent authentication and data normalization across disparate services. This collection includes API marketplaces like RapidAPI, unified API platforms like Merge and Apideck, API directories like APIs.guru and APIs.io, web scraping aggregators, and open-source catalog tools like Backstage. type: Index image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg tags: - API Aggregation - API Directory - API Marketplace url: >- https://raw.githubusercontent.com/api-evangelist/aggregation/refs/heads/main/apis.yml created: '2026-03-26' modified: '2026-04-19' specificationVersion: '0.19' apis: [] network: - name: Alloy Automation url: https://raw.githubusercontent.com/api-evangelist/alloy-automation/refs/heads/main/apis.yml - name: Any-API url: https://raw.githubusercontent.com/api-evangelist/any-api/refs/heads/main/apis.yml - name: API Harmony url: https://raw.githubusercontent.com/api-evangelist/api-harmony/refs/heads/main/apis.yml - name: API Layer url: https://raw.githubusercontent.com/api-evangelist/api-layer/refs/heads/main/apis.yml - name: API Stack url: https://raw.githubusercontent.com/api-evangelist/api-stack/refs/heads/main/apis.yml - name: Apideck url: https://raw.githubusercontent.com/api-evangelist/apideck/refs/heads/main/apis.yml - name: Apify url: https://raw.githubusercontent.com/api-evangelist/apify/refs/heads/main/apis.yml - name: APIpark url: https://raw.githubusercontent.com/api-evangelist/apipark/refs/heads/main/apis.yml - name: APIs.guru url: https://raw.githubusercontent.com/api-evangelist/apis-guru/refs/heads/main/apis.yml - name: APIs.io url: https://raw.githubusercontent.com/api-evangelist/apis-io/refs/heads/main/apis.yml - name: APIs.json url: https://raw.githubusercontent.com/api-evangelist/apis-json/refs/heads/main/apis.yml - name: Backstage url: https://raw.githubusercontent.com/api-evangelist/backstage/refs/heads/main/apis.yml - name: Blobr url: https://raw.githubusercontent.com/api-evangelist/blobr/refs/heads/main/apis.yml - name: Bright Data url: https://raw.githubusercontent.com/api-evangelist/bright-data/refs/heads/main/apis.yml - name: Codat url: https://raw.githubusercontent.com/api-evangelist/codat/refs/heads/main/apis.yml - name: Composio url: https://raw.githubusercontent.com/api-evangelist/composio/refs/heads/main/apis.yml - name: Datafiniti url: https://raw.githubusercontent.com/api-evangelist/datafiniti/refs/heads/main/apis.yml - name: DigitalAPI url: https://raw.githubusercontent.com/api-evangelist/digitalapi/refs/heads/main/apis.yml - name: Diffbot url: https://raw.githubusercontent.com/api-evangelist/diffbot/refs/heads/main/apis.yml - name: Finverse url: https://raw.githubusercontent.com/api-evangelist/finverse/refs/heads/main/apis.yml - name: Hotglue url: https://raw.githubusercontent.com/api-evangelist/hotglue/refs/heads/main/apis.yml - name: Import.io url: https://raw.githubusercontent.com/api-evangelist/import-io/refs/heads/main/apis.yml - name: Merge url: https://raw.githubusercontent.com/api-evangelist/merge/refs/heads/main/apis.yml - name: Nango url: https://raw.githubusercontent.com/api-evangelist/nango/refs/heads/main/apis.yml - name: Optic url: https://raw.githubusercontent.com/api-evangelist/optic/refs/heads/main/apis.yml - name: Paragon url: https://raw.githubusercontent.com/api-evangelist/paragon/refs/heads/main/apis.yml - name: Plaid url: https://raw.githubusercontent.com/api-evangelist/plaid/refs/heads/main/apis.yml - name: Postman url: https://raw.githubusercontent.com/api-evangelist/postman/refs/heads/main/apis.yml - name: ProgrammableWeb url: https://raw.githubusercontent.com/api-evangelist/programmableweb/refs/heads/main/apis.yml - name: Public APIs url: https://raw.githubusercontent.com/api-evangelist/public-apis/refs/heads/main/apis.yml - name: RapidAPI url: https://raw.githubusercontent.com/api-evangelist/rapidapi/refs/heads/main/apis.yml - name: Rutter url: https://raw.githubusercontent.com/api-evangelist/rutter/refs/heads/main/apis.yml - name: SaaSHub url: https://raw.githubusercontent.com/api-evangelist/saashub/refs/heads/main/apis.yml - name: ScrapingBee url: https://raw.githubusercontent.com/api-evangelist/scrapingbee/refs/heads/main/apis.yml - name: SmartBear url: https://raw.githubusercontent.com/api-evangelist/smartbear/refs/heads/main/apis.yml - name: Stoplight url: https://raw.githubusercontent.com/api-evangelist/stoplight/refs/heads/main/apis.yml - name: SwaggerHub url: https://raw.githubusercontent.com/api-evangelist/swaggerhub/refs/heads/main/apis.yml - name: Tray.io url: https://raw.githubusercontent.com/api-evangelist/tray-io/refs/heads/main/apis.yml - name: Unified.to url: https://raw.githubusercontent.com/api-evangelist/unified-to/refs/heads/main/apis.yml - name: Vessel url: https://raw.githubusercontent.com/api-evangelist/vessel/refs/heads/main/apis.yml - name: Workato url: https://raw.githubusercontent.com/api-evangelist/workato/refs/heads/main/apis.yml - name: Zyla url: https://raw.githubusercontent.com/api-evangelist/zyla/refs/heads/main/apis.yml common: - type: Portal url: https://apievangelist.com - type: GitHubOrganization url: https://github.com/api-evangelist - type: Features data: - name: Unified API Interface description: API aggregation platforms expose multiple underlying APIs through a single, standardized interface, reducing the integration burden for developers. - name: API Marketplaces and Discovery description: API directories and marketplaces like RapidAPI, APIs.guru, and APIs.io help developers discover, evaluate, and subscribe to APIs from multiple providers. - name: Data Normalization description: Unified API platforms like Merge and Apideck normalize data schemas across disparate HR, CRM, and accounting systems into a consistent model. - name: Authentication Abstraction description: Aggregation layers handle OAuth, API keys, and other authentication flows across multiple providers, presenting a single auth interface to the consumer. - name: API Catalogs and Internal Discovery description: Internal API catalog tools like Backstage and Stoplight enable organizations to document, discover, and govern APIs across the enterprise. - name: Web Scraping as API description: Platforms like Bright Data, Apify, and ScrapingBee aggregate web data and expose it through structured APIs, removing the need for custom scraper maintenance. - type: UseCases data: - name: Unified HR and CRM Integration description: Unified API platforms like Merge and Apideck enable applications to sync with dozens of HR systems (BambooHR, Workday, ADP) through a single normalized API. - name: API Marketplace Distribution description: API providers publish their APIs to marketplaces like RapidAPI to reach new developer audiences and monetize access through tiered subscription plans. - name: Internal API Governance description: Organizations use API catalogs like Backstage or Stoplight to document, version, and govern internal APIs across product teams. - name: Financial Data Aggregation description: Platforms like Plaid and Codat aggregate financial account data from banks and accounting systems into normalized APIs for fintech applications. - name: AI Agent Tool Federation description: Aggregation platforms like Composio expose hundreds of third-party APIs as unified tool sets that AI agents can discover and invoke. - type: Integrations data: - name: RapidAPI description: The largest API marketplace with 40,000+ APIs available to developers through a unified subscription and API key model. - name: Merge description: Unified API for HR, payroll, accounting, CRM, and ATS integrations across 100+ providers. - name: Apideck description: Unified API platform for CRM, file storage, accounting, and e-commerce integrations. - name: Composio description: API aggregation platform enabling AI agents to use 100+ apps as structured tools. - name: Backstage description: Open-source developer portal and API catalog platform from Spotify for internal service discovery. - name: APIs.guru description: Open-source directory of machine-readable API specifications (OpenAPI) maintained by the community. - name: Plaid description: Financial data aggregation platform connecting apps to bank accounts and financial institutions. - name: Nango description: Open-source unified API for OAuth integrations across 200+ apps. maintainers: - FN: Kin Lane email: kin@apievangelist.com humanURL: https://apievangelist.com