---
title: "Witnessability, WEXP and CBEE: Roles and Relationships"
description: "Understand the roles of Witnessability's conceptual work, the WEXP execution-claim appraisal specifications and the CBEE claim-boundary rules."
canonical: "https://witnessability.io/ecosystem/"
representation: "Website reading format; consult linked publications for their exact status and terms."
---

[Witnessability](https://witnessability.io/) / Ecosystem / Related work

# A common question. Distinct areas of work.

Concepts, specifications and tools contribute at different levels. A result at one level does not automatically establish a result at another.

Witnessability editorial explanation · 30 October 2026, revised 3 November 2026\
Prepared with AI assistance. [Authorship and responsibility](https://witnessability.io/about/#authorship).\
Read the linked publications for their exact definitions and status.

## Witnessability / The conceptual foundation

Witnessability.io explains the relationship between propositions, evidence, evaluation and reliance. It provides entry points to the Conceptual Core, published model, research and practical explanations. Its scope includes software and AI systems as well as records, institutions and archival practice.

## WEXP / Execution-related claims

The WEXP work develops appraisal semantics and related specifications for execution-related claims. The public project retains the name Witnessed Execution Protocol. The current Core draft's title describes its focus on appraisal semantics; this website does not announce a renaming.

Use the WEXP project for its specifications, implementation work and interoperability records. Each experiment should be read with its exact inputs, versions and limits. A successful example is not a general guarantee for other systems.

## CBEE / Boundaries for claims

Claim Boundaries for Execution Evidence collects non-inference rules and reporting distinctions. It defines no protocol, record format or registry. Its individual Internet-Draft status is distinct from the publication status of the Witnessability Conceptual Core.

## Work across project boundaries

Useful collaboration includes testing a precise claim against a published evidence set, reviewing a proposed rule, or identifying missing assumptions in an example. Such work can use another project's format and tools. Adoption of the Witnessability name is not a prerequisite for a useful finding.

## Sources and next steps

- [Witnessability organization on GitHub](https://github.com/Witnessability)
- [WEXP project on GitHub](https://github.com/WEXP-dev)
- [WEXP.dev](https://wexp.dev/)
- [CBEE publication and source](https://github.com/Witnessability/cbee-spec)

## What this does not claim

These relationships do not imply common governance, a merger of GitHub organizations, standards-body endorsement or verified capabilities of any product that implements these texts.