Feature
Caching & Conditional Requests
ETags, cache headers, and conditional GETs.
33 providers
182 APIs
31 declared variants
Cache-control headers, ETags, and If-None-Match support let clients avoid refetching unchanged data. Directly reduces both latency and billable call volume.
33 API providers on the APIs.io network offer caching & conditional requests. The highest-rated are Anthropic, Inworld AI, Amazon API Gateway, Modal, GitHub.
Providers
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 2 Complete, well-documented, and agent-ready
Strong 8 Solid coverage with minor gaps
Amazon API GatewayAmazon API Gateway is a fully managed service that makes it easy to create, publish, maintain, monitor, and...ModalModal is a serverless cloud platform for AI and data workloads. Modal lets developers write ordinary Python...GitHubThe GitHub REST API allows developers to programmatically interact with GitHub resources including reposito...FastlyFastly is an edge cloud platform that helps customers create great digital experiences quickly, securely, a...GitHub ActionsAPIs for GitHub Actions - automation and CI/CD platform.PipedreamPipedream is a developer-centric integration platform providing three product lines: Workflows (code-level ...Amazon Storage GatewayAWS Storage Gateway is a hybrid cloud storage service that provides on-premises access to virtually unlimit...SmitherySmithery is an MCP server registry and hosting platform that lets developers discover, publish, and connect...
Developing 13 Usable, with meaningful gaps to close
Amazon CodeBuildAWS CodeBuild is a fully managed continuous integration service that compiles source code, runs tests, and ...GrafanaGrafana Labs builds the open and composable observability stack used by millions of engineers to visualize,...CouchbaseCouchbase is a distributed, document-oriented NoSQL cloud database platform that combines the flexibility o...VesselFinderVesselFinder is a maritime intelligence company operating a global AIS vessel-tracking network (terrestrial...BifrostBifrost is a high-performance open-source AI gateway that unifies access to 20+ AI providers through a sing...CircleCICircleCI is a continuous integration and continuous delivery (CI/CD) platform that automates software build...GeminiGoogle's Gemini API provides access to state-of-the-art generative AI models for text generation, multimoda...BazelBazel is a fast, scalable, multi-language and extensible build tool open-sourced by Google. It supports sof...PlandexPlandex is an open-source, terminal-based AI coding agent designed to take on large, multi-step software de...PackagistPackagist is the default package repository for Composer, the PHP dependency manager. It indexes over 454,0...NGINXNGINX is a high-performance open-source web server, reverse proxy, and API gateway widely used for load bal...Kong AI GatewayKong AI Gateway is the AI-native capability layer built on top of Kong Gateway and managed through Kong Kon...buildpacks-ioCloud Native Buildpacks (CNB) is a CNCF Incubating project that transforms application source code into OCI...
Thin 8 Limited public surface area
AI GatewayAn API Evangelist landscape index of AI gateways — the LLM routers, prompt firewalls, model fallback proxie...Amazon AthenaAmazon Athena is an interactive query service that makes it easy to analyze data in Amazon S3 using standar...TurborepoTurborepo is a high-performance build system for JavaScript and TypeScript codebases, built by Vercel and w...Apache CuratorApache Curator is a Java/JVM client library for Apache ZooKeeper, governed by the Apache Software Foundatio...Amazon AppSyncAmazon AppSync creates serverless GraphQL and Pub/Sub APIs that simplify application development through a ...planetscalePlanetScale is a serverless MySQL database platform powered by Vitess, providing horizontal scaling, branch...YARNYARN (Yet Another Resource Negotiator in the original Hadoop context; also the JavaScript package manager) ...CDataCData Software is a leading provider of data access and connectivity solutions. Our standards-based connect...
What Providers Actually Declared
This feature is a canonical term. These are the free-text strings
providers wrote in their own apis.yml that map onto it.
AI Accelerator semantic caching for OpenAI and Google GeminiAPI CachingAsynchronous container lookups with 202 polling and 12-hour cachingBoost for query result cachingBuild CachingBuilt-in caching (Memcached compatible)Built-in caching for improved performanceConditional requests with ETag/If-None-Match return 304 without consuming rate limitContent CachingContent-addressable local caching of task outputsContext CachingDeclarative Image builder with layered caching (pip_install, apt_install, run_commands, from_registry, from_dockerfile)Dependency caching for faster buildsDocker layer caching (Performance+)HTTP CachingLocal CachingLocal task caching with input-hash invalidation; worktree-aware in Nx 22.7Managed gateway handling MCP protocol compliance, metadata enrichment, and cachingMetadata CachingNode CachingOffline CachingPer-layer caching with launch/build/cache types in `.toml` Prompt caching with automatic and manual breakpoints, 5-minute and 1-hour TTLs, cache reads at 10% of input pricePrompt caching, prompt compression, and integrated web search inside the RouterQuery and resource caching (Enterprise)Query result caching for improved performance and cost reductionRemote Caching and ExecutionResponse CachingSemantic CachingStatic Composer v2 metadata mirror at repo.packagist.org with long-lived cachingStep caching for memoization
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Work with this as data
Every feature here is available over the APIs.io API and to AI agents over MCP. Features is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.