emerging · -1.5 capability schema

gRPC

Score 23.6 / 100 92 providers +74 via APIs 157 APIs Search apis.io →

Providers using this tag (92)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 1 Complete, well-documented, and agent-ready
PostmanEnvironmentFlowSpecificationWorkspace21 APIs82.5
Strong 16 Solid coverage with minor gaps
BufCode GenerationKafkaOpen Source2 APIs64.9Heroic LabsGame BackendMultiplayerReal-TimeWebSocket4 APIs63.2ViamRoboticsEdge AIFleet ManagementComputer Vision13 APIs56.6GraviteeAPI GatewayAPI ManagementIdentity and Access ManagementIdentity3 APIs66.2Stack MoxieCompanyRevenue OperationsMarketing OperationsObservability1 API65.4Nord SecurityCybersecurityThreat IntelligenceDark Web MonitoringAttack Surface Management7 APIs65.3EngineCompanyTravelBusiness TravelLodging1 API64.0KentikNetwork ObservabilityNetwork MonitoringFlow AnalyticsBGP20 APIs62.6Sift StackObservabilityTelemetryAerospaceDefense1 API60.6ActionpowerSpeech RecognitionSpeech-to-TextText-to-SpeechNatural Language Processing1 API58.9bitdriftCompanyDeveloper ToolsObservabilityMobile1 API58.4TailorCompanyERPHeadless ERPRetail3 APIs56.4AgiBotCompanyRoboticsHumanoid RobotsEmbodied AI3 APIs56.0AptosBlockchainWeb3MoveLayer 11 API55.9KurrentCompanyDatabaseEvent SourcingEvent Streaming1 API55.5AlphausCompanyFinOpsCloud Cost ManagementCloud1 API54.7
Developing 21 Usable, with meaningful gaps to close
AuthzedAuthorizationAccess ControlPermissionsZanzibar1 API43.7LocalyticsCompanyMarTechMobile AnalyticsPush Notifications2 APIs51.7AGNTCYAI AgentsInteroperabilitySpecificationOpen Source4 APIs51.0Polar SignalsCompanyEnterpriseObservabilityContinuous Profiling1 API50.6LightstreamCompanyVideoLive StreamingBroadcasting3 APIs50.2Defakto SecuritySecurityIdentityNon-Human IdentityWorkload Identity2 APIs49.6ZenossAIOpsMonitoringObservabilityInfrastructure3 APIs48.9Bear RoboticsRoboticsAutonomous Mobile RobotsFleet ManagementHospitality1 API48.3SS&C TechnologiesFinancial ServicesInvestment ManagementFund AdministrationWealth Management1 API48.2NuanceCompanySpeech RecognitionConversational AINatural Language Understanding1 API48.0Dronecode FoundationDronesUAVRoboticsMAVLink4 APIs47.6MomentoCompanyAI InfrastructureCachingServerless1 API47.5EngFlowCompanyRemote ExecutionRemote CachingBuild Systems1 API47.3HappyCoCompanyPropTechReal EstateProperty Management1 API46.7PicarroCompanyGas DetectionEnvironmental MonitoringEmissions4 APIs46.4Triton OneSolanaRPCBlockchainWeb33 APIs46.0Mysten LabsCompanyBlockchainWeb3Sui3 APIs45.6Envoy GatewayAPI GatewayCNCFEnvoyKubernetes3 APIs41.9QuanergyCompanyLiDARSensorsPhysical Security1 API40.8Linq.ggCompanyGamingPaymentsWallets1 API40.5EinrideCompanySustainable TransportFreightLogistics2 APIs39.7
Thin 33 Limited public surface area
BuftechnologiesCompanyProtobufDeveloper Tools3 APIs38.9TemporalDurable ExecutionWorkflow OrchestrationWorkflows1 API32.1ClarifaiArtificial IntelligenceComputer VisionNatural Language ProcessingImage Recognition1 API29.5KratosCloud-NativeFrameworkGo1 API28.7ImandraCompanyArtificial IntelligenceAutomated ReasoningFormal Verification1 API39.1Vapor IOCompanyEdge ComputingData CenterColocation2 APIs38.2AalyriaCompanyNetworkingSatelliteSpace4 APIs37.9OpenXAdvertisingProgrammatic AdvertisingAd ExchangeSupply Side Platform5 APIs37.6ProvableCompanySecurities LendingCapital MarketsFintech1 API37.2PlakarCompanyBackupData ProtectionDisaster Recovery36.7SpacemeshCompanyCrypto InfrastructureBlockchainCryptocurrency2 APIs36.2CrestaArtificial IntelligenceContact CenterContact Center AICCaaS1 API35.7The GuildAPI CompositionAPI GatewayAPI ObservabilityBreaking Changes10 APIs34.7QpointCompanySecurityObservabilityeBPF1 API34.6Science CorporationCompanyNeurotechnologyBrain-Computer InterfaceNeural Interface1 API33.8ToitCompanySoftware-as-a-ServiceIoTEmbedded33.7AI ArenaCompanyGamingWeb3Artificial Intelligence33.5HYPERLABSsignal-integrityTest and MeasurementElectronic ComponentsInstrumentation1 API32.7CodeCompanyPaymentsMicropaymentsWallets1 API32.3AkaveCompanyObject StorageS3 CompatibleDecentralized Storage3 APIs32.1SuccinctCompanyCrypto InfrastructureZero-Knowledge ProofszkVM31.7TimberCompanyDeveloper ToolsObservabilityLogs1 API31.6HailoArtificial IntelligenceMachine LearningSemiconductorsEdge Computing2 APIs31.4Unto LabsCompanyCryptocurrencyBlockchainLayer 12 APIs30.8Harmonic GGCompanyBlockchainSolanaBlock Building2 APIs30.6ContainerdCloud-NativeContainer RuntimeCRIDocker1 API30.5RefurbedCompanyMarketplaceE-CommerceRefurbished Electronics2 APIs29.1Apache ArrowAnalyticsApacheColumnar FormatData3 APIs28.5ProvenanceCompanyBlockchainFinancial ServicesTokenization1 API28.5Mythical GamesCompanyGamingWeb3Blockchain1 API27.9PachydermCompanyMLOpsData VersioningData Pipeline1 API27.8CloudMindsCompanyFrontier TechRoboticsCloud Robotics1 API26.8SeaweedFSCompanyObject StorageDistributed File SystemS3 Compatible1 API26.3
Emerging 14 Early or largely undocumented
TailcallGraphQLAPI GatewayGraphQL RuntimeREST2 APIs24.4MilkmanAPI ClientCassandraDesktop ApplicationGraphQL1 API13.7YaakAPI ClientClientsDeveloper ToolsGraphQL1 API12.9Connect-RPCApache 2.0BufCode GenerationConnect Protocol5 APIs12.5Eden NetworkCompanyWeb3EthereumMEV1 API12.2InfostellarCompanySpaceSatelliteGround Station1 API25.6XilinxFortune 1000SemiconductorsFPGAProgrammable Logic25.2Protocol BuffersData FormatProtobufProtocol Buffers1 API24.0TariCompanyBlockchainCryptocurrencyProtocol1 API23.6Boston DynamicsAtlasBoston DynamicsFleet Management1 API20.8EigenDABlockchainData AvailabilityEthereumRestaking5 APIs19.8CloneCompanyFrontier TechRoboticsHumanoid1 API18.5DexAuthenticationConnectorsFederation1 API17.9Nova LabsCompanyWirelessIoTLoRaWAN16.2
Minimal 7 Almost no public developer surface
GrpcurlCommand Line Interface1 API10.1KreyaAPI ClientDeveloper ToolsREST1 API9.0EzyClientsDesktopGUI1 API4.5VerseCompanyConnect RPCBessemer Portfolio1 API7.4SpeechlyCompanySpeech RecognitionVoiceSpoken Language Understanding1 API0.0test.aiCompanyTestingTest AutomationQuality Assurance1 API0.0ToplCompanyBlockchainDistributed Ledger1 API0.0

APIs with this tag (157)

Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Exemplar 6 Complete, well-documented, and agent-ready
Salesforce Pub/Sub APIThe Salesforce Pub/Sub API is a gRPC-based API for publishing and subscribing to platform events, change da...88.0GitLab Orbit APIUse this API to query [GitLab Orbit](https://docs.gitlab.com/orbit/), which indexes a group's software deve...86.3ClickHouse gRPC InterfacegRPC interface defined by clickhouse_grpc.proto for efficient binary communication.77.1Qlik Server-Side Extension ProtocolgRPC/protobuf contract for extending the Qlik Associative Engine with external compute. A plugin implements...72.2Service Cloud Pub/Sub APIThe gRPC event API. Publish and subscribe to platform events and Change Data Capture events (including /dat...70.3Spectro Cloud Grpc APIThe grpc API from Spectro Cloud — 1 operation(s) for grpc.66.7
Strong 17 Solid coverage with minor gaps
Hermes Search Engine gRPC APISelf-hosted, MIT-licensed Rust search engine published by Space Frontiers (github.com/SpaceFrontiers/hermes...64.1Nakama APIThe Nakama API is the core REST and WebSocket API for Heroic Labs' open-source game backend server. It prov...63.2Goldmane Flows APIGoldmane is the Calico flow aggregation and network-observability service introduced in Calico Open Source ...62.9Condux Protobuf ContractsProtocol Buffers definitions published in Condux's public source repository (tripledownab/condux, proto/con...61.5Sift gRPC APIThe gRPC contract that is Sift's primary API — 51 services and 330 RPCs defined across 66 proto3 files publ...60.6daglo Realtime Streaming STT (gRPC)Bidirectional gRPC streaming speech recognition served from apis.daglo.ai. The provider publishes the proto...58.9Antimetal Agent APIs (Protobuf)Public protobuf/Connect definitions for the Antimetal system agent — the component that connects customer i...58.4bitdrift Public APIThe bitdrift Capture public API — schema-first protobuf service definitions exposed over gRPC, Connect, and...58.4Decart Oasis Action-to-Video (gRPC)A gRPC session protocol for Oasis 3 Preview, Decart's promptable real-time world model. A client initialize...57.6Junos Telemetry Interface (JTI)Streaming telemetry from Junos and Junos EVO devices to a collector over gRPC (gNMI and native sensors) or ...57.3Chirp gRPC APIAdvanced gRPC interface for typed, on-premise Chirp integrations using the same X-API-Key sign-in as REST; ...56.7Tailor Platform Operator APIThe Tailor Platform control plane. A single tailor.v1.OperatorService with 254 RPCs covering organizations,...56.4AimDK Protocol (Link-U OS Robot Interface)The AimDK protocol is AgiBot's first-party Protocol Buffers definition of its robots' interfaces, published...56.0Aptos Transaction Stream APIgRPC streaming API that delivers historical and real-time transaction data from the Aptos blockchain. Used ...55.9Agentic RTB Framework gRPCThe Agentic Real-Time Framework (ARTF) 1.0 defines gRPC extension points an exchange calls during an auctio...55.6KurrentDB gRPC APIThe primary protocol for KurrentDB. The published protocol buffer definitions cover the v2 streams service ...55.5Salesforce Pub/Sub APIgRPC-based API for publishing and subscribing to platform events, change data capture events, and real-time...55.5
Developing 45 Usable, with meaningful gaps to close
Arango Managed Platform (AMP) APIThe control-plane API of the Arango Managed Platform (formerly ArangoGraph Insights Platform / Oasis) — the...52.3Kaiko StreamReal-time crypto market data delivered over gRPC server-streaming. Feeds include tick-level trades, top-of-...52.1Bruno API ClientThe core open-source, git-native desktop API client (a lightweight Postman/Insomnia alternative). Compose a...51.4Bruno API ClientBruno is an open-source API client for exploring and testing REST, GraphQL, and gRPC APIs. Collections are ...51.40G DA (Data Availability) gRPCgRPC surface for the 0G data-availability layer. The Disperser service accepts blobs asynchronously (Disper...51.1Agent Directory (DIR)Distributed announce and discovery of multi-agent systems. gRPC-first, with services for storage (content-a...51.0Luther Platform Protobuf ContractsBuf-managed Protocol Buffers published at github.com/luthersystems/protos (module buf.build/luthersystems/p...51.0Cerbos PDP gRPC APIThe Cerbos PDP gRPC API exposes the cerbos.svc.v1.CerbosService and related management services on port 359...50.7Starlink Local Device APISpaceX's officially supported local gRPC API on Starlink hardware, defined in protobuf and published verbat...50.0Defakto Management APIThe Defakto control-plane API. A gRPC service surface of sixteen versioned services covering trust domains,...49.6SPIRL Management API (legacy)The pre-rebrand SPIRL control-plane endpoint, still documented and still serving the legacy app.spirl.com c...49.6Zenoss Cloud gRPC ServicesFirst-party proto3 service contracts published at github.com/zenoss/zenoss-protobufs and released as a Go m...48.9RegScale gRPC Ingestion ServicesRegScale publishes a gRPC contract library, rs-data, covering three high-volume ingestion services: AssetIn...48.7Bear Base APIThe on-robot gRPC service for direct local control of a Bear robot, used where the cloud is not in the path...48.3etcd gRPC APIThe etcd v3 API is a gRPC-based interface providing key-value operations (put, get, delete, range), watch s...48.2Telia ACE Audio Stream Forwarding APIBidirectional streaming gRPC service over HTTP/2 that forwards copies of the audio streams in Telia ACE con...48.1Akash Chain Node (gRPC / REST / RPC)Direct access to the Akash Cosmos-SDK chain over gRPC, REST (LCD), and Tendermint RPC. Used to query state,...48.0Google Assistant Service (gRPC)Bidirectional streaming gRPC API (google.assistant.embedded.v1alpha2.EmbeddedAssistant/Assist) for sending ...48.0Nuance Mix ASRaaS gRPC APIAutomatic Speech Recognition as a Service — convert speech to text in real time over a gRPC streaming API (...48.0Nuance Mix DLGaaS gRPC APIDialog as a Service — execute conversational dialog flows authored in Mix.dialog over a gRPC Dialog service.48.0Nuance Mix NLUaaS gRPC APINatural Language Understanding as a Service — interpret user input against NLU models built in Mix.nlu, ove...48.0Nuance Mix NRaaS gRPC APIGrammar-based recognition as a Service — grammar-driven speech recognition over a gRPC runtime service.48.0Nuance Mix TTSaaS gRPC APIText-to-Speech as a Service — turn text into synthesized speech (including neural voices) over a gRPC Synth...48.0MAVSDK gRPC APIMAVSDK is the Dronecode Foundation's programmable interface to any MAVLink vehicle, and the only surface in...47.6HappyCo API (Happy API)HappyCo's gRPC API for property inspections, reports, templates, accounts, users, partner account provision...46.7Picarro Edge — SAM FOUP gRPC APIThe first-party gRPC/ProtoBuf interface Picarro publishes for external access to Picarro SAM (semiconductor...46.4Picarro Platform Server APIThe gRPC interface to the host computer underneath a Picarro SAM deployment. `platformserver` exposes NetCo...46.4Bazel Remote Execution APIBazel speaks the open Remote Execution API (REAPI), a gRPC protocol for content-addressable storage and dis...46.3Triton One Yellowstone gRPC (Dragon's Mouth)Dragon's Mouth — Triton's high-performance Solana streaming gRPC service. Subscribe to slots, blocks, trans...46.0Sui gRPC APIThe Sui full-node gRPC API (Protobuf, sui.rpc.v2) exposing LedgerService, StateService, TransactionExecutio...45.6Rigetti QCS Controller Service (gRPC)gRPC Controller service that executes encrypted Controller Jobs on a Rigetti QPU endpoint and returns measu...45.4Rigetti QCS Translation Service (gRPC)gRPC Translation service that compiles native Quil programs into encrypted Controller Jobs for execution on...45.4Rentberry Geocoder (gRPC)Open-source gRPC geocoding and timezone-lookup service Rentberry built and runs for its own property search...44.6Envoy xDS APIsThe xDS (x Discovery Service) APIs provide dynamic configuration for Envoy proxies via a management server,...43.9Sora APIgRPC service for collecting, storing and analysing device location time series. DeviceService (5 RPCs) take...43.8SPIRE Server APIThe SPIRE Server exposes a gRPC API used by administrators and the SPIRE Agent to manage registration entri...43.6SPIRE Workload APIThe SPIRE Agent exposes the SPIFFE Workload API as a Unix domain socket, allowing workloads running on the ...43.6Hubble Relay APIThe Hubble Relay API is a gRPC service that aggregates and relays network flow data from multiple Hubble ag...43.4Envoy Gateway Extension ServerA gRPC contract an operator implements to extend Envoy Gateway. Envoy Gateway is the client: during xDS tra...41.9Envoy Gateway Remote Infrastructure ProviderA gRPC contract added in v1.9.0 that lets an operator supply their own infrastructure management strategy i...41.9Contour ExtensionService APIKubernetes Custom Resource Definition for binding gRPC-based extension services to the Contour API. Extensi...40.8QORTEX DTC APIThe QORTEX DTC API is the integration surface of Quanergy's detect-track-classify perception server. A gRPC...40.8LinQ Wallet Public APIgRPC / Protocol Buffers API for integrating a game with LinQ Wallet services. Covers geo restriction checks...40.5Milvus gRPC APIgRPC is the canonical, high-throughput interface to Milvus. The official SDKs are gRPC-based; the REST API ...40.0OpenMLDB Cluster RPC ServicesThe Protobuf/brpc service contracts behind an OpenMLDB cluster — TabletServer, NameServer, TaskManager, the...39.3
Thin 63 Limited public surface area
Cisco NX-OS gNMI/gRPC APIgRPC Network Management Interface for streaming telemetry and configuration management on Nexus switches.39.2ImandraX APIThe ImandraX cloud-native automated reasoning engine, exposed as a protobuf-defined gRPC API. Services incl...39.1OpenTelemetry Protocol (OTLP) gRPC APIThe OTLP gRPC API defines Protocol Buffers service definitions for exporting traces, metrics, and logs over...39.0QUODD Snap gRPC APIgRPC delivery of pricing snapshots (Snap) and ticker information (Ticker Info) for high-performance, low-ov...38.4Synse Plugin gRPC API (V3Plugin)The internal gRPC API for bi-directional communication between Synse Server and Synse plugins. The publishe...38.2Spacetime Federation API (East-West Interface)The Federation API, or East-West Interface, allows peer networks to request and to supply network resources...37.9Spacetime Northbound Interface (NBI)The Northbound Interface allows humans or applications to define and orchestrate a Spacetime network. It ca...37.9Spacetime Southbound Interface (SBI / CDPI)The Southbound Interface, also called the Control to Data-plane Interface (CDPI), is the collection of gRPC...37.9Spacetime Status APIThe Status API is a small operational gRPC service exposed by every Spacetime instance. GetVersion returns ...37.9Cassandra gRPC API (Stargate)High-performance gRPC API for Cassandra through Stargate, designed for low-latency service-to-service commu...37.7OpenXBuild Real-Time Bidstream APIAn inverted API — OpenX is the caller. A partner implements an enrichment service that OpenX hosts as a con...37.6Triton GRPC APIHigh-performance gRPC API for model inference with support for streaming and binary tensor data.37.2Linkerd Proxy Control Plane APIThe Linkerd Proxy Control Plane gRPC API defines the protobuf service contracts used by the data-plane prox...37.1AlphaGenome APIGoogle DeepMind's AlphaGenome API, a gRPC service at gdmscience.googleapis.com that predicts genomic tracks...37.0OpenSCOW / CraneSched research-computing APIsOpenSCOW ("Super Computing On Web") is an HPC portal and management system authored at Peking University; C...37.0Jito Block Engine Validator gRPCgRPC interface between Jito-Solana validators / relayers and the Block Engine — BlockEngineValidator with S...36.6Jito Relayer gRPCRelayer gRPC service that sits in front of a Jito-Solana validator, exposing GetTpuConfigs and SubscribePac...36.6Jito Searcher gRPC ServicegRPC SearcherService exposing SubscribeBundleResults, SendBundle, GetNextScheduledLeader, GetConnectedLeade...36.6Jito Streaming SurfacesReal-time streaming surfaces from Jito infrastructure — the wss tip_stream for continuous bundle-tip percen...36.6Vitess VTCtld APIVTCtld is the Vitess topology management daemon that exposes a gRPC and HTTP API for administrative operati...36.6Vitess VTGate APIVTGate is the stateless proxy that routes queries to the appropriate VTTablet instances. It exposes a MySQL...36.6Envoy Proxy External Authorization APIThe Envoy External Authorization API provides a gRPC or HTTP interface for delegating authorization decisio...36.4Envoy Proxy External Processing APIThe Envoy External Processing API is a gRPC-based service that enables an external server to inspect and mo...36.4Envoy Proxy gRPC Access Log Service APIThe Envoy gRPC Access Log Service (ALS) API provides a streaming gRPC interface for receiving access log en...36.4Envoy Proxy Health Discovery Service APIThe Envoy Health Discovery Service (HDS) is a gRPC-based API that enables a management server to instruct E...36.4Envoy Proxy Metrics Service APIThe Envoy Metrics Service API is a gRPC-based interface for streaming Envoy's statistics and metrics to a r...36.4Envoy Proxy Rate Limit Service APIThe Envoy Rate Limit Service (RLS) is a gRPC-based API that allows Envoy to delegate rate limiting decision...36.4Envoy Proxy Tap Service APIThe Envoy Tap Service API provides a mechanism for intercepting and recording HTTP and TCP traffic passing ...36.4Falco gRPC APIThe Falco gRPC API provided a streaming interface for consuming Falco alert outputs and querying version in...36.3Jaeger Collector APIThe Jaeger Collector API receives trace spans from instrumented applications and SDKs. Since Jaeger v1.11 t...36.3Jaeger Remote Sampling APIThe Jaeger Remote Sampling API provides HTTP and gRPC endpoints that SDKs use to retrieve sampling strategi...36.3Jaeger Remote Storage APIThe Jaeger Remote Storage API is a gRPC-based interface that allows extending Jaeger with custom storage ba...36.3Cresta Platform APICresta's production API host. https://api.cresta.com resolves and answers anonymously with a gRPC-JSON tran...35.7TypeSpec Protobuf EmitterEmits Protocol Buffer `.proto` files from TypeSpec service definitions, enabling gRPC service generation fr...35.7QuickNode Core RPC APIMulti-chain JSON-RPC, REST, and gRPC endpoints across 77+ blockchains (Ethereum, Solana, Polygon, Arbitrum,...35.4CRI-O CRI gRPC APICRI-O implements the Kubernetes Container Runtime Interface (CRI) gRPC API that the kubelet uses to manage ...34.6Helius LaserStreamLow-latency gRPC streaming of Solana account, slot, transaction, and block updates (Geyser-compatible).33.3SPIFFE Workload APIThe SPIFFE Workload API is a gRPC streaming interface through which workloads request and receive SPIFFE Ve...33.2Anduril Lattice SDKThe Lattice SDK provides programmatic access to Anduril's Lattice platform so partners can publish entities...32.7HYPERLABS Radium gRPC API (TDR11100)Public gRPC control and acquisition interface for the HYPERLABS TDR11100 Time Domain Reflectometer. The pro...32.7Code Protobuf APIThe Code payments gRPC/Protobuf API — account, currency, messaging, and transaction (intent/swap) services ...32.3Akave IPC Node gRPC APIgRPC services IPCNodeAPI and IPCArchivalAPI (package ipcnodeapi) used by the Akave Go SDK and CLI to talk t...32.1Mango OPI Storage Bridge gRPC APIMangoBoost ships an Open Programmable Infrastructure (OPI) gRPC bridge that translates standard OPI storage...32.0Towns ProtocolTowns Protocol is an open, decentralized messaging protocol built on Base. Builders integrate via first-par...31.8Hailo Media Library ServiceThe Hailo Media Library is the C++ media and vision stack for the Hailo-15 AI vision processor. It exposes ...31.4Seldon Inference APIThe Seldon Inference API provides REST and gRPC endpoints for serving machine learning model predictions at...31.0Thru gRPC APIHigh-performance proto3 gRPC API (with gRPC-Web for browsers) for the Thru blockchain. QueryService exposes...30.8Vert.x gRPCA Vert.x-native gRPC implementation providing a reactive, non-blocking gRPC client and server built on top ...30.8Harmonic Searcher API (gRPC)gRPC bundle-submission interface for searchers. Authenticate with a Solana keypair (challenge-response to B...30.6Harmonic Validator API (gRPC)gRPC services the Harmonic validator clients (Salsa/Samba) use to bind to a block builder: subscribe to pac...30.6Akka gRPCAkka gRPC provides support for building streaming gRPC servers and clients on top of Akka Streams, with cod...30.5Containerd gRPC APICore gRPC API for managing the full container lifecycle including containers, images, content, snapshots, n...30.5Kinference Picker gRPC APIThe kinference.v1 Picker gRPC service used by the Kinference router - given an inference request it picks a...28.9KratosKratos is a Go framework for building cloud-native microservices, originally created at Bilibili. It provid...28.7Apache Arrow Flight RPCArrow Flight is a high-performance RPC framework built on gRPC for transferring large datasets using the Ar...28.5Provenance Blockchain APIPublic Cosmos SDK REST (LCD / gRPC-gateway), gRPC, and Tendermint RPC interface to the Provenance Blockchai...28.5Apache Beam Job Service APIThe Beam Job Service API provides a gRPC-based interface for submitting, managing, and monitoring Apache Be...28.4XMTP Network gRPC APICore gRPC-based API for the XMTP decentralized messaging network. Provides operations for sending and retri...28.2FirehoseOpen-source flat-file extraction layer that powers Substreams. Provides chain-specific gRPC streams of bloc...27.8Pachyderm gRPC APIPachyderm's platform API, exposed over gRPC/protobuf. Core services are PFS (data versioning — repos, commi...27.8The Graph SubstreamsgRPC streaming protocol for parallelized blockchain dataflows backed by Firehose. Substreams power high-thr...27.8HARIX Robot Skill API (gRPC)The gRPC surface a HARIX skill application uses to drive a CloudMinds cloud robot and to consume HARIX clou...26.8SeaweedFS gRPC APIgRPC services exposed by SeaweedFS cluster components (Seaweed master, VolumeServer, SeaweedFiler, SeaweedS...26.3
Emerging 20 Early or largely undocumented
StellarStation APIPublic gRPC API for the StellarStation ground-station-as-a-service platform. Lets satellite operators list ...25.6BandChain gRPC APIThe BandChain gRPC API provides high-performance protocol buffer access to BandChain nodes for querying ora...25.2PyBand Python SDKPyBand is a Python SDK that offers a comprehensive set of features for interacting with BandChain via gRPC....25.2Bitquery Solana CoreCast (gRPC)gRPC streaming API for Solana that delivers decoded block, transaction, and instruction data with sub-secon...25.1Tailcall GraphQL RuntimeHigh-performance GraphQL runtime for composing multiple upstream REST, gRPC, and GraphQL APIs into a unifie...24.4Protocol BuffersProtocol Buffers (Protobuf) is Google's language-neutral, platform-neutral, extensible mechanism for serial...24.0Kestrel Kubernetes OperatorThe Kestrel Kubernetes Operator is an open-source Go-based operator that connects Kubernetes clusters to th...23.5Lightwalletd gRPC APIA bandwidth-efficient gRPC service that provides a compact block streaming interface to the Zcash blockchai...21.8Apache SkyWalking gRPC Data Collect ProtocolThe SkyWalking data collection protocol defines gRPC service definitions for telemetry data ingestion from ...21.6PyAnsysOpen-source Python ecosystem for Ansys products. The pyansys metapackage bundles 45+ libraries including Py...21.1Tekton Results APITekton Results provides a long-term store and a gRPC + REST API for completed PipelineRun/TaskRun records a...20.9Boston Dynamics Spot SDKThe Spot SDK is an open-source SDK for developing applications and payloads for the Spot quadruped robot. B...20.8EigenDA Churner APIgRPC service that handles operator registration via the Churn RPC. The Churner decides whether new operator...19.8EigenDA Disperser APIgRPC API exposed by the EigenDA Disperser. Rollups submit raw blobs to DisperseBlob, then poll GetBlobStatu...19.8EigenDA Relay APIgRPC service exposing GetBlob, GetChunks, and GetValidatorChunks against blobs stored by the relay layer. R...19.8EigenDA Retriever APIgRPC service that fans out chunk requests to EigenDA operator nodes and reconstructs the original blob from...19.8EigenDA Validator Node APIgRPC API served by EigenDA operator nodes. Validators receive chunk dispersals from the Disperser, sign agg...19.8Dex gRPC APIgRPC management API for Dex covering OAuth2 client lifecycle (Create, Get, Update, Delete, List), password ...17.9Dash Platform DAPI (Decentralized API)Decentralized HTTP API exposing gRPC and JSON-RPC endpoints for both Dash Core layer 1 and Dash Platform la...13.4YaakYaak is an open-source desktop API client for organizing and executing REST, GraphQL, WebSockets, Server Se...12.9
Minimal 6 Almost no public developer surface
VOLTHAVOLTHA (Virtual Optical Line Termination Hardware Abstraction) is an open source platform that virtualizes ...10.8Grpcurlgrpcurl is an open source command-line tool for interacting with gRPC servers, like curl for gRPC with supp...10.1KreyaKreya is a GUI client for gRPC and REST APIs with innovative features for environments, authorizations, and...9.0Ezyezy is a graphical gRPC and gRPC-Web client for testing and debugging gRPC services with an intuitive deskt...4.5Apparatus (Topl) Node and Genus gRPC APIThe gRPC interface to the Apparatus (Topl) blockchain: NodeRpc on the Bifrost full node for submitting tran...0.0test.ai ClassifiergRPC service that classifies UI element screenshots into semantic labels. A single RPC, ClassifyElements, t...0.0

Companies reaching this through an API (74)

These companies publish an API, specification or operation carrying “gRPC” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

0G Labs 4Paradigm Akash Network Akka Anduril Industries Ansys Antimetal Apache Beam Apache Cassandra Apache SkyWalking ArangoDB Band Protocol Bazel Bitquery Bruno Cerbos CHIRP Wireless Cilium Cisco Nexus Dashboard ClickHouse Condux Contour CRI-O Dash Decart DeepMind Envoy Envoy Proxy Etcd Falco GitLab Google Assistant Helius Here Not There Labs IAB Tech Lab Jaeger Jito Labs Juniper Networks Kaiko Kestrel Kinference LF Broadband Linkerd Luther Systems MangoBoost Milvus OpenTelemetry Peking University Qlik Sense QuickNode
Show all 74 companies ↓
QUODD RegScale Rentberry Rigetti Computing Salesforce Salesforce Sales Cloud Salesforce Service Cloud APIs Seldon Space Frontiers Spectro Cloud SPIFFE SPIRE Starlink Swift Navigation Tekton Telia Company The Graph Tigera Triton Inference Server TypeSpec Vert.x Vitess XMTP Zcash

Score breakdown

Frequency
59.7
log-scaled weighted occurrences
Breadth
1.2
spread across providers
Quality lift
37.0
mean composite of providers using it
Cohesion
6.5
strength of nearest seed neighbor

Related tags

Protobuf 23 co-occurrences Protocol Buffers 19 co-occurrences Cloud-Native 17 co-occurrences Kubernetes 23 co-occurrences Streaming 32 co-occurrences Observability 27 co-occurrences HTTP 10 co-occurrences RPC 9 co-occurrences

Where this tag comes from

Api tag157
Provider tag92
Openapi tag1
Openapi op tag1

Markets provisional

Kin Score markets whose measured providers carry this tag. Share is the fraction of the market's measured providers that carry it — it describes the market, not this tag.

MarketShare of the market's providers
Buf Schema Registry (public Protocol Buffers modules, gRPC / ConnectRPC schema publishers)58%

Cohort brief

Auto-generated

The 92 providers in the APIs.io catalog tagged gRPC, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
92
all scored
Mean Kin Score
37
+12.9 vs catalog 24.1
Mean Agent Readiness
20.7
+6.6 vs catalog 14.1
Spread
0–82.5
median 36 · σ 17
How the 92 split by band
Exemplar 1Strong 16Developing 21Thin 33Emerging 14Minimal 7
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Developer Ergonomics 51 24.5 +26.5 92
Operational Transparency 27.1 13.2 +13.9 92
Contract Quality 31.9 18.6 +13.3 92
Discoverability 66.1 59.1 +7 92
Access Clarity 32.7 30 +2.7 92
Contract Governance 11.2 9.7 +1.5 92

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes
ArtifactThis cohortCatalogDifference
MCP server (any) 21% 18% +3
MCP server (first-party) 18% 16% +2
Agent Skills 0% 0% 0
OAuth scopes 11% 13% -2
Security 96% 99% -3
Arazzo workflows 2% 1% +1
Governance rules 37% 36% +1

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score
  1. 1 Postman 82.5
  2. 2 Gravitee 66.2
  3. 3 Stack Moxie 65.4
  4. 4 Nord Security 65.3
  5. 5 Buf 64.9
  6. 6 Engine 64
  7. 7 Heroic Labs 63.2
  8. 8 Kentik 62.6
  9. 9 Sift Stack 60.6
  10. 10 Actionpower 58.9
Top by Agent Readiness
  1. 1 Postman 55.6
  2. 2 Buf 49.2
  3. 3 Mysten Labs 48.6
  4. 4 Kurrent 46.5
  5. 5 Nord Security 42.9
  6. 6 AGNTCY 42.5
  7. 7 Sift Stack 41.3
  8. 8 Polar Signals 41.2
  9. 9 OpenX 40.5
  10. 10 Tailor 38.3
All 92 members of this roster resolve to a scored provider in the catalog.
Coverage caveat. 75 of 92 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 14 November 2026, across 41591 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

Work with this as data

Every tag here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for tags

7 MCP tools reach this
  • find_tagsBrowse and filter every tag in the catalog.
  • get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
  • cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This tag 
curl "https://apis.io/api/v1/tags/grpc"
All tags 
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort (paid plan)
The distribution (Pro)

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