Providers using this tag (53)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 2 Complete, well-documented, and agent-ready
Strong 2 Solid coverage with minor gaps
Developing 18 Usable, with meaningful gaps to close
Thin 19 Limited public surface area
Emerging 12 Early or largely undocumented
APIs with this tag (43)
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 2 Complete, well-documented, and agent-ready
Developing 15 Usable, with meaningful gaps to close
Avalanche Platform Chain APIJSON-RPC access to the Avalanche Primary Network Platform Chain (P-Chain) — balances, UTXOs, subnets, valid...Cubist RPC APIThe RPC API from Cubist — 1 operation(s) for rpc.Avalanche RPC APIRemote procedure calls for Avalanche Platform Chain operations including UTXO queries, transaction submissi...Horizon Blockchain Games Rpc APIThe Rpc API from Horizon Blockchain Games — 32 operation(s) for rpc.Blockdaemon RPC APIProduction-ready shared and dedicated JSON-RPC and REST node endpoints across 50+ protocols including Bitco...Stellar RPC APIThe Stellar RPC API (formerly Soroban RPC) is a JSON-RPC interface for interacting with Soroban smart contr...Golioth Remote Procedure Call (RPC)Bidirectional remote-procedure-call service. The cloud invokes device-side methods registered by firmware a...Supabase RPC APIInvoke PostgreSQL functions via remote procedure calls.Sequence Rpc APIThe Rpc API from Sequence — 32 operation(s) for rpc.Routescan Geth/Parity Proxy APIEthereum JSON-RPC compatible proxy endpoints for standard methods including eth_blockNumber, eth_getBlockBy...Nakama RPC APICall custom runtime functions.AT Protocol XRPC APIXRPC is the AT Protocol's HTTP-based remote procedure call layer. All protocol interactions — querying reco...Filebase IPFS RPC APIThe Filebase IPFS RPC API exposes core IPFS daemon functionality through an HTTP interface. Bucket-specific...Akash Chain Node (gRPC / REST / RPC)Direct access to the Akash Cosmos-SDK chain over gRPC, REST (LCD), and Tendermint RPC. Used to query state,...Temporal Nexus APITemporal Nexus connects Temporal applications across namespaces and teams via named Nexus endpoints backed ...
Thin 15 Limited public surface area
Monad RPC ProvidersRegistry of third-party RPC providers supporting Monad — QuickNode, Alchemy, Goldsky Edge, Ankr, MonadInfra...gRPC Core FrameworkThe gRPC core framework defines the RPC protocol, service definition format using Protocol Buffers, and the...Juniper Networks RPC APIExecute Junos RPC commandsZora Network RPC APIJSON-RPC access to the Zora Network L2 chain (Chain ID 7777777), an OP Stack rollup on Ethereum. Compatible...GMX TypeScript SDKOfficial @gmx-io/sdk package shipping two clients: GmxSdk (SDK v1) for full read/write access via RPC, and ...Apache Dubbo Go SDKThe Go implementation of Apache Dubbo, providing the same RPC framework capabilities including service disc...Apache Dubbo Java SDKThe core Apache Dubbo Java framework providing RPC service definition, publishing, invocation, and service ...gRPC Reflection APIgRPC server reflection provides information about publicly-accessible gRPC services on a server, enabling d...Syndica Sig Validator RPC APISig is Syndica's open-source Solana validator client implemented in Zig, built for performance, modular RPC...Syndica Solana RPC (HTTP) APIHigh-performance Solana JSON-RPC HTTP endpoints served from a fault-tolerant elastic-node architecture acro...Syndica Solana RPC (WebSocket) APIStandard Solana RPC PubSub WebSocket service supporting accountSubscribe, programSubscribe, signatureSubscr...Foundation Smart Contract APIEthereum smart contract interface for direct on-chain interaction with Foundation marketplace contracts. Su...1inch Web3 RPC APIHosted JSON-RPC endpoints for 14+ EVM and non-EVM networks, exposed through the 1inch API key for unified r...Apache Thrift IDLThe Thrift Interface Definition Language (IDL) is used to define data types and service interfaces in a lan...Apache Thrift Server APIThe Thrift Server API provides server implementations for hosting Thrift services including TSimpleServer (...
Emerging 11 Early or largely undocumented
Apache Arrow Flight RPCArrow Flight is a high-performance RPC framework built on gRPC for transferring large datasets using the Ar...Apache TVM RPC APIThe TVM RPC (Remote Procedure Call) system enables remote compilation, deployment, and profiling of optimiz...5ireChain Native (Substrate) RPCSubstrate/Polkadot-SDK RPC surface of the 5ireChain node, reached over WebSocket (default port 9944) and co...KitexKitex is a high-performance, extensible RPC framework for building microservices in Go, developed by ByteDa...Apache ThriftApache Thrift is a lightweight, language-independent software stack for point-to-point RPC implementation. ...Twirp RPC FrameworkTwirp is a simple RPC framework with protobuf service definitions. Define your service in a .proto file and...NamekoNameko is a microservices framework for Python that provides tools for building, testing, and running servi...Cap'n Proto RPC ProtocolCap'n Proto's RPC protocol is a capability-based RPC layer that supports promise pipelining, object referen...gRPC and Protocol BuffersgRPC is a high-performance RPC framework using HTTP/2 and Protocol Buffers (Protobuf) as its IDL and wire f...JSON-RPC 2.0JSON-RPC 2.0 is a stateless, light-weight remote procedure call (RPC) protocol encoded in JSON. It is widel...Go MicroGo Micro is a distributed systems framework for building microservices in Go, providing service discovery, ...
Score breakdown
Frequency
53.7
log-scaled weighted occurrences
Breadth
1.5
spread across providers
Quality lift
43.2
mean composite of providers using it
Cohesion
6.2
strength of nearest seed neighbor
Related tags
JSON-RPC 17 co-occurrences
Multi-Chain 8 co-occurrences
Protocol Buffers 6 co-occurrences
NFT 12 co-occurrences
Staking 7 co-occurrences
Code Generation 6 co-occurrences
Go 6 co-occurrences
gRPC 10 co-occurrences
Where this tag comes from
Provider tag27
Api tag43
Openapi tag7
Openapi op tag69
Cohort brief
Auto-generatedThe 53 providers in the APIs.io catalog tagged RPC, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
53
all scored
Mean Kin Score
35.8
+15.1 vs catalog 20.7
Mean Agent Readiness
17.9
+8.2 vs catalog 9.7
Spread
14.3–70.4
median 35.3 · σ 13.2
How the 53 split by band
Exemplar 2Strong 2Developing 18Thin 19Emerging 12Minimal 0
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Contract Quality | 42.3 | 17.5 | +24.8 | 53 |
| Operational Transparency | 26.6 | 11.3 | +15.3 | 53 |
| Developer Ergonomics | 32.5 | 17.9 | +14.6 | 53 |
| Access Clarity | 32.9 | 22.3 | +10.6 | 53 |
| Discoverability | 70.7 | 60.4 | +10.3 | 53 |
| Contract Governance | 12.8 | 6.4 | +6.4 | 53 |
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
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 17% | 16% | +1 |
| MCP server (first-party) | 2% | 7% | -5 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 4% | 9% | -5 |
| Security | 96% | 88% | +8 |
| Arazzo workflows | 2% | 2% | 0 |
| Governance rules | 64% | 13% | +51 |
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 Heroic Labs 70.4
- 2 Matomo 67.3
- 3 Pocket Network 62.4
- 4 Chainstack 61.8
- 5 Ava Labs 54.2
- 6 Cubist 50.4
- 7 Triton One 49.4
- 8 Avalanche 48.2
- 9 Horizon Blockchain Games 48.1
- 10 Blockdaemon 47
Top by Agent Readiness
- 1 Matomo 37.8
- 2 Ava Labs 33.3
- 3 Helius 32.6
- 4 Alchemy 31.7
- 5 Chainstack 30.9
- 6 Avalanche 30.6
- 7 Stellar 30.6
- 8 Supabase 29.6
- 9 Horizon Blockchain Games 27.9
- 10 Cubist 26.1
All 53 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
25 August 2026, across 26891
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.
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