# Execution Package

> The portable, signed contract that carries delivery work between environments.

Source: https://accd.github.io/verchestra/docs/concepts/execution-package/
Content digest: `sha256:7f2fb1c7b249c4314378455fdc789cfd8967efb0ec21147f437b50923213c0bb`

An Execution Package is the durable unit of Verchestra delivery. It binds:

- source identity and digests;
- requirements and accepted decisions;
- ordered, verifiable tasks;
- policy and authority requirements;
- expected artifacts and evidence;
- checkpoint and recovery state;
- independent verification and human-review gates.

The package is provider-neutral. Claude Code, Codex, and OpenCode/Qwen can interpret it through different drivers, but none may silently change its accepted requirements.

Packages are append-oriented and content-addressed. A material change produces a new identity and invalidates stale approvals.