| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/open-policy-agent/opa/internal/future | |
| github.com/open-policy-agent/opa/internal/presentation | Package presentation prints results of an expression evaluation in json and tabular formats. |
| github.com/open-policy-agent/opa/v1/ast | Package ast declares Rego syntax tree types and also includes a parser and compiler for preparing policies for execution in the policy engine. |
| github.com/open-policy-agent/opa/v1/bundle | Package bundle implements bundle loading. |
| github.com/open-policy-agent/opa/v1/compile | Package compile implements bundles compilation and linking. |
| github.com/open-policy-agent/opa/v1/format | Package format implements formatting of Rego source files. |
| github.com/open-policy-agent/opa/v1/metrics | Package metrics contains helpers for performance metric management inside the policy engine. |
| github.com/open-policy-agent/opa/v1/profiler | Package profiler computes and reports on the time spent on expressions. |
| github.com/open-policy-agent/opa/v1/rego | Package rego exposes high level APIs for evaluating Rego policies. |
| github.com/open-policy-agent/opa/v1/storage | Package storage exposes the policy engine's storage layer. |
| github.com/open-policy-agent/opa/v1/topdown | Package topdown provides low-level query evaluation support. |
| github.com/open-policy-agent/opa/v1/topdown/lineage | |
| github.com/open-policy-agent/opa/v1/version | Package version contains version information that is set at build time. |
| github.com/peterh/liner | Package liner implements a simple command line editor, inspired by linenoise (https://github.com/antirez/linenoise/). |
| io | Package io provides basic interfaces to I/O primitives. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| 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. |