> ## Documentation Index
> Fetch the complete documentation index at: https://docs.brik64.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Terms

> Public glossary for BRIK64, Digital Circuitality, PCD, monomers, EVA and evidence workflows.

## BRIK64

A CLI-first system for designing software logic as explicit circuit structure.

## Digital Circuitality

The discipline of shaping software as bounded, compositional, deterministic and inspectable computational circuitry.

## PCD

Program Circuit Description. A PCD describes bounded logic as a circuit blueprint.

## `.pcd`

The source artifact for a PCD Blueprint. It can be raw source or an envelope that carries non-semantic metadata around exact `pcd_source` bytes.

## Monomer

An atomic BRIK64 operation. Monomers are the operation vocabulary used when expressing circuit logic.

## EVA

The BRIK64 composition model: sequential, conditional and parallel structure.

## Polymer

A composed unit built from PCDs and lower-level operations.

## `.brik`

The local BRIK64 workspace for traceability, logic events, export records and evidence references.

## BIR

BRIK64 intermediate representation below PCD, used by analysis and generation workflows.

## TCE

Thermodynamic Coherence Engine. In public docs, treat TCE as an evidence and coherence mechanism under a declared scope.

## Evidence Pack

A collection of artifacts, hashes, reports, manifests and references that support a bounded engineering statement.

## Evidence Status

The explicit statement of what an artifact currently supports and what remains outside the available evidence.

## Managed Section

The delimited section in `AGENTS.md` used for reviewed BRIK64 agent
instructions. The current CLI beta does not expose `brik64 skill` subcommands.

## Agent Skill

BRIK64 instructions for coding agents. The skill helps agents generate PCD, select monomers, preserve `.brik` traceability and avoid unsupported claims.

## CLI

The local `brik` command surface.

## MCP

Model Context Protocol integration for exposing BRIK64 context and workflows to AI agents.