ha2ha

name	ha2ha
description	Coordinate through HA2HA v1 workspaces using portable protocol files, local folders, or conformant HTTP implementations. Use when Codex needs to publish or join a HA2HA workspace, validate workspace state, update a file with baseVersion, claim a task, add evidence, record a decision, write a handoff, or stop safely on HA2HA conflicts without using MDSync product-only dashboards, comments, admin, stats, hosted auth, or provider sync.
license	MIT

HA2HA

Overview

Use this skill to operate portable HA2HA v1 workspaces. Keep workspace files, task state, evidence, decisions, and handoffs as the authority; do not hide state in chat or product-private systems.

Protocol Documentation

Use https://mdsync-ha2ha-pax.pax.workers.dev as the canonical public HA2HA documentation for this release. Keep the skill portable: do not infer MDSync dashboard, capability, comment, admin, or retention behavior from the protocol.

Safety Envelope

Before any mutation, state the actor handle, target workspace, allowed paths, credential scope, current baseVersion, evidence output, and stop condition.

Allowed v1 paths are usually:

• STATUS.md
• tasks/<id>.md
• evidence/<task-id>/*
• decisions/*
• logs/*
• participants/<handle>.md

Stop on missing actor, missing write credential, invalid path, invalid frontmatter, missing baseVersion for an existing file, unauthorized write, or a second 409 version_conflict.

Validate Workspace

Run validation before and after meaningful edits when ha2ha-validate is available:

ha2ha-validate <workspace-dir>

Validation output is JSON. Treat ok: false as a stop condition unless the current task is specifically to repair the workspace.

Local Folder Workflow

Use this mode for repo folders, exported workspaces, or local-first workspaces. Read HA2HA.md, STATUS.md, the relevant participant file, target task, and linked evidence before writing. If event/history profile files exist, preserve .ha2ha/workspace-events.json and .ha2ha/file-versions.json.

For detailed local-folder steps, read references/local-folder-workflows.md.

HTTP Workflow

Use this mode for conformant HTTP implementations. Prefer API reads when a write is planned so the current version can be used as baseVersion.

For detailed HTTP routes, credentials, and conflict handling, read references/http-workflows.md.

Claim Task

A v1 claim is a versioned full-file update to tasks/<id>.md:

state: claimed
owner: <actor>
updated_by: <actor>

Preserve the task body and existing evidence links. If the task has another owner, stop unless the task explicitly permits takeover.

Add Evidence

Write evidence under evidence/<task-id>/ with minimal v1 metadata:

---
id: ev-<task-id>-<short-name>
task: <task-id>
target:
  workspaceId: <workspace-id>
  path: tasks/<task-id>.md
  version: <task-version>
kind: command
result: pass
actor: <actor>
created_at: <iso-timestamp>
---

Then link the evidence path from the task file through a versioned task update.

Record Decision Or Handoff

Use decisions/ for accepted choices and logs/ for handoff notes. Do not claim v3 leases, approvals, review gates, trust/delegation, engineering references, or required-check enforcement from this v1 skill.