| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| encoding/binary | Package binary implements simple translation between numbers and byte sequences and encoding and decoding of varints. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| go.opentelemetry.io/otel/codes | Package codes defines the canonical error codes used by OpenTelemetry. |
| go.opentelemetry.io/otel/internal/matchers | |
| go.opentelemetry.io/otel/internal/metric | |
| go.opentelemetry.io/otel/label | |
| go.opentelemetry.io/otel/metric | Package metric provides the OpenTelemetry API used to measure metrics about source code operation. |
| go.opentelemetry.io/otel/metric/number | |
| go.opentelemetry.io/otel/metric/registry | |
| go.opentelemetry.io/otel/propagation | Package propagation contains OpenTelemetry context propagators. |
| go.opentelemetry.io/otel/trace | Package trace provides an implementation of the tracing part of the OpenTelemetry API. |
| reflect | Package reflect implements run-time reflection, allowing a program to manipulate objects with arbitrary types. |
| strconv | Package strconv implements conversions to and from string representations of basic data types. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| sync/atomic | Package atomic provides low-level atomic memory primitives useful for implementing synchronization algorithms. |
| testing | Package testing provides support for automated testing of Go packages. |
| time | Package time provides functionality for measuring and displaying time. |