RPC
Providers using this tag (27)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Strong 1 Solid coverage with minor gaps
Developing 7 Usable, with meaningful gaps to close
Thin 10 Limited public surface area
Emerging 9 Early or largely undocumented
APIs with this tag (42)
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 1 Complete, well-documented, and agent-ready
Strong 3 Solid coverage with minor gaps
Developing 11 Usable, with meaningful gaps to close
Horizon Blockchain Games Rpc APIThe Rpc API from Horizon Blockchain Games — 32 operation(s) for rpc.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,...Golioth Remote Procedure Call (RPC)Bidirectional remote-procedure-call service. The cloud invokes device-side methods registered by firmware a...Cubist RPC APIThe RPC API from Cubist — 1 operation(s) for rpc.Supabase RPC APIInvoke PostgreSQL functions via remote procedure calls.gRPC Core FrameworkThe gRPC core framework defines the RPC protocol, service definition format using Protocol Buffers, and the...Stellar RPC APIThe Stellar RPC API (formerly Soroban RPC) is a JSON-RPC interface for interacting with Soroban smart contr...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 ...Sequence Rpc APIThe Rpc API from Sequence — 32 operation(s) for rpc.Quant Network RPC APIJSON-RPC proxy to the Fusion L2 (OP-Geth) **only**. For JSON-RPC against any other connected chain, use the...
Thin 14 Limited public surface area
Avalanche RPC APIRemote procedure calls for Avalanche Platform Chain operations including UTXO queries, transaction submissi...AT Protocol XRPC APIXRPC is the AT Protocol's HTTP-based remote procedure call layer. All protocol interactions — querying reco...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...Agent Failure Mode Registry Rpc APIThe Rpc API from Agent Failure Mode Registry — 1 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.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 (...Filebase IPFS RPC APIThe Filebase IPFS RPC API exposes core IPFS daemon functionality through an HTTP interface. Bucket-specific...Temporal Nexus APITemporal Nexus connects Temporal applications across namespaces and teams via named Nexus endpoints backed ...Apache Arrow Flight RPCArrow Flight is a high-performance RPC framework built on gRPC for transferring large datasets using the Ar...Monad RPC ProvidersRegistry of third-party RPC providers supporting Monad — QuickNode, Alchemy, Goldsky Edge, Ankr, MonadInfra...
Emerging 13 Early or largely undocumented
GMX TypeScript SDKOfficial @gmx-io/sdk package shipping two clients: GmxSdk (SDK v1) for full read/write access via RPC, and ...Zora Network RPC APIJSON-RPC access to the Zora Network L2 chain (Chain ID 7777777), an OP Stack rollup on Ethereum. Compatible...Apache TVM RPC APIThe TVM RPC (Remote Procedure Call) system enables remote compilation, deployment, and profiling of optimiz...Apache ThriftApache Thrift is a lightweight, language-independent software stack for point-to-point RPC implementation. ...Gram (by Speakeasy) APIGram (by Speakeasy) API as documented publicly: 11 operations. Contract generated from the documentation by...5ireChain Native (Substrate) RPCSubstrate/Polkadot-SDK RPC surface of the 5ireChain node, reached over WebSocket (default port 9944) and co...Foundation Smart Contract APIEthereum smart contract interface for direct on-chain interaction with Foundation marketplace contracts. Su...KitexKitex is a high-performance, extensible RPC framework for building microservices in Go, developed by ByteDa...1inch Web3 RPC APIHosted JSON-RPC endpoints for 14+ EVM and non-EVM networks, exposed through the 1inch API key for unified r...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...Go MicroGo Micro is a distributed systems framework for building microservices in Go, providing service discovery, ...
Companies reaching this through an API (26)
These companies publish an API, specification or operation carrying “RPC” 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.
5ire
Agent Failure Mode Registry
Akash Network
Apache Arrow
Apache TVM
AT Protocol
Avalanche
Cubist
Filebase
Foundation
GMX
Golioth
Gram (by Speakeasy)
Heroic Labs
Horizon Blockchain Games
Juniper Networks
Matomo
Monad
Nakama
Quant Network
Routescan (Snowtrace)
Sequence
Stellar
Supabase
Temporal
Zora
Score breakdown
Frequency
49.4
log-scaled weighted occurrences
Breadth
0.6
spread across providers
Quality lift
32.0
mean composite of providers using it
Cohesion
6.2
strength of nearest seed neighbor
Related tags
JSON-RPC 15 co-occurrences
Multi-Chain 7 co-occurrences
Validator 7 co-occurrences
Cosmos 5 co-occurrences
Staking 8 co-occurrences
NFT 12 co-occurrences
Go 6 co-occurrences
gRPC 10 co-occurrences
Where this tag comes from
Provider tag28
Api tag41
Openapi tag6
Openapi op tag8
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.
| Market | Share of the market's providers |
|---|---|
| Blockchain Node and RPC Infrastructure | 50% |
Cohort brief
Auto-generatedThe 27 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
27
all scored
Mean Kin Score
30.5
+8.3 vs catalog 22.2
Mean Agent Readiness
15.6
+3.6 vs catalog 12
Spread
11–55
median 30.8 · σ 11.7
How the 27 split by band
Exemplar 0Strong 1Developing 7Thin 10Emerging 9Minimal 0
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Contract Quality | 32.2 | 17.2 | +15 | 27 |
| Operational Transparency | 24.1 | 13 | +11.1 | 27 |
| Developer Ergonomics | 32.9 | 23.2 | +9.7 | 27 |
| Discoverability | 65.8 | 57.9 | +7.9 | 27 |
| Contract Governance | 12.8 | 6.5 | +6.3 | 27 |
| Access Clarity | 18.6 | 23.9 | -5.3 | 27 |
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) | 15% | 13% | +2 |
| MCP server (first-party) | 15% | 12% | +3 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 0% | 11% | -11 |
| Security | 93% | 98% | -5 |
| Arazzo workflows | 4% | 2% | +2 |
| Governance rules | 74% | 16% | +58 |
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 Blockdaemon 55
- 2 Pocket Network 49.4
- 3 tRPC 43.9
- 4 gRPC 42.6
- 5 Triton One 42.2
- 6 NoLimitNodes 41.4
- 7 Apache Dubbo 40.3
- 8 InfStones 39.7
- 9 Syndica 36.4
- 10 Pocket Network 36
Top by Agent Readiness
- 1 Blockdaemon 44.8
- 2 Alchemy 43.2
- 3 Helius 32.8
- 4 Tatum 25.1
- 5 Infura 24
- 6 Triton One 23.9
- 7 Reown 23.9
- 8 Pocket Network 22.1
- 9 tRPC 22.1
- 10 InfStones 22.1
All 27 members of this roster resolve to a scored provider in
the catalog.
Coverage caveat. 20 of 27 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 24 October 2026, across 31984 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.
Coverage caveat. 20 of 27 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 24 October 2026, across 31984 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.