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# Semantic conventions for RPC

**Status**: [Experimental][DocumentStatus]

This document defines semantic conventions for remote procedure calls (RPC)
, also called "remote method invocations" (RMI).

Semantic conventions for RPC are defined for the following signals:

* [RPC Spans](rpc-spans.md): Semantic Conventions for RPC client and server *spans*.
* [RPC Metrics](rpc-metrics.md): Semantic Conventions for RPC *metrics*.

Technology specific semantic conventions are defined for the following RPC systems:

* [Connect](connect-rpc.md): Semantic Conventions for *Connect RPC*.
* [gRPC](grpc.md): Semantic Conventions for *gRPC*.
* [JSON-RPC](json-rpc.md): Semantic Conventions for *JSON-RPC*.

Specifications defined by maintainers of RPC systems:

* [gRPC](https://github.com/grpc/proposal/blob/master/A66-otel-stats.md): Semantic Conventions for *gRPC*.

[DocumentStatus]: https://opentelemetry.io/docs/specs/otel/document-status
