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

# Changelog

> Where to find ECP (Execution Control Protocol) release notes and the Fluent API overhaul.

# Changelog

Release notes for ECP (Execution Control Protocol) packages live in the monorepo:

* [CHANGELOG on GitHub](https://github.com/executioncontrolprotocol/executioncontrolprotocol/blob/main/CHANGELOG.md)
* npm package pages under the `@executioncontrolprotocol` scope

## Fluent-era docs

This documentation site describes the **Fluent Workflow + Environment** surface:

* Author with TypeScript Fluent API → JSON manifests
* Run with `ecp` CLI and host runtimes
* Browser Graph Editor + `ecp up` for Ollama

Older **YAML Context / `spec.yaml` / ECPContext** material is obsolete and is not documented here. Prefer [Fluent API](/guides/fluent-api) and [Concepts](/learn/concepts).

## Next steps

* [Quickstart](/getting-started/quickstart)
* [Packages](/reference/packages)