Multica Projects and Resources

Quick start

Projects are durable context containers. Resources attached to a project can affect future agent tasks.

multica project list --output json
multica project get <project-id> --output json
multica project resource list <project-id> --output json

Project resources are mutated through project resource commands/endpoints. Issue comments do not create durable project resources.

Core model

A project groups work and carries durable resources. A resource is not just display metadata; it is context later injected into task briefs and .multica/project/resources.json.

A project's description is also durable context: when an issue (or a quick-create task) is bound to a project, the project description is injected into the agent's brief under ## Project Context and written to .multica/project/resources.json as project_description. Use it for project-wide rules/context that should apply to every task in the project.

Common resource types:

• github_repo — durable GitHub repo context, with resource_ref.url, optional checkout ref, and optional prompt-only default_branch_hint;
• local_directory — daemon-local path context, with resource_ref.local_path, daemon_id, optional label, and optional execution_mode (in_place, the default, or worktree).

CLI

multica project list --output json
multica project get <project-id> --output json
multica project create --title "<title>" --repo <github-url> --output json
multica project create --title "<title>" --start-date 2026-03-01 --due-date 2026-03-31 --output json
multica project update <project-id> --title "<title>" --output json
multica project update <project-id> --due-date 2026-04-15 --output json
multica project update <project-id> --start-date "" --output json   # clear the start date
multica project status <project-id> in_progress --output json
multica project resource list <project-id> --output json
multica project resource add <project-id> --type github_repo --url <github-url> --output json
multica project resource add <project-id> --type github_repo --url <github-url> --ref <branch-or-sha> --output json
multica project resource add <project-id> --type local_directory --local-path <abs-path> --daemon-id <daemon-id> --output json
multica project resource add <project-id> --type local_directory --local-path <abs-path> --daemon-id <daemon-id> --execution-mode worktree --output json
multica project resource update <project-id> <resource-id> --execution-mode in_place --output json
multica project resource update <project-id> <resource-id> --url <new-github-url> --output json
multica project resource update <project-id> <resource-id> --ref <branch-or-sha> --output json
multica project resource remove <project-id> <resource-id> --output json

--execution-mode decides how tasks share a local_directory. in_place (default) runs the agent in the user's directory, one task at a time; a second task waits in waiting_local_directory. worktree gives each task its own git worktree of that repo, so tasks run concurrently and each delivers its work as a branch in the user's repo instead of editing the working copy. Every task of one conversation shares that branch — agent/<agent>/<issue> for an issue, agent/<agent>/chat-<session> for a chat — and each turn's worktree starts from the previous turn's work rather than from HEAD; a task with no conversation behind it gets agent/<agent>/<task>. Continuation is decided by an ownership record (refs/multica/local-state/<branch>, which holds the owning conversation, the snapshot of the user's directory the branch already carries, and the branch tip it was recorded at), never by the branch name. A same-named branch the user created — or one that no longer contains the recorded commit, i.e. deleted and recreated or force-moved — is left alone and the task falls back to agent/<agent>/<issue>-<id>. A turn replays only what the user changed since that snapshot; when those edits conflict with the branch's own work the worktree is handed to the agent mid-merge and the run delivers nothing until the agent resolves it. worktree requires the path to be a git repository with at least one commit; tasks fail with an explicit error otherwise. The gate is the local-worktree-v1 capability the daemon advertises — not its version string — and it is checked twice: at save time, and again against the daemon that claims each task, so a machine whose runtime cannot do worktrees gets its tasks cancelled rather than run in place. Saving worktree is also refused (HTTP 422, code daemon_version_unsupported) while the daemon on that machine does not advertise the capability — the fix is updating the Multica app there, then retrying. Pass an empty value to clear it back to the default.

For github_repo, non-JSON --ref sets resource_ref.ref, the default checkout branch/tag/SHA for future tasks in that project. JSON --ref '<json>' remains the escape hatch for full payloads or resource types not covered by shortcuts.

--start-date / --due-date are optional calendar days (YYYY-MM-DD, like issue dates). On project update, pass an empty string (--start-date "") to clear a date; an unset flag leaves it untouched.

Referring to a project in a comment

A project has no MUL-123-style identifier, so writing its title as prose produces dead text — there is nothing for the reader's client to autolink. Use the mention-link form instead, with the project UUID from multica project list --output json:

[Roadmap](mention://project/<project-id>)

Every client makes it navigable, with different presentation: web and desktop render a chip carrying the project's icon and current title, while mobile renders an ordinary link that opens the project on tap. Unlike @agent / @squad, it is a pure link: util.MentionRe does not even include project, so it enqueues nothing and notifies nobody — the same no-side-effect contract as an issue mention.

Prefer this form over pasting the project's URL. Web and desktop do unfurl a bare in-app project URL into that same chip, but mobile does not — there a pasted URL is handed to the system browser and takes the reader out of the app.

When to add a resource

Add/update a project resource when the user asks for durable project context: "把这个 GitHub repo 绑到项目上", "以后都用这个 repo", "agent 总是拿不到这个项目的仓库", or "这个项目要在我的本地目录里跑".

Project resources are durable and affect future tasks. multica repo checkout is task-local checkout state.

Debugging wrong context

1. multica project get <project-id> --output json.
2. multica project resource list <project-id> --output json.
3. Check github_repo.resource_ref.url, optional ref, default_branch_hint, and local_directory.resource_ref.daemon_id.
4. Updating resources is a durable mutation. After an update, listing the resource is the verification path.
5. If resources match the expected task context, inspect runtime/repo checkout path next.

Side effects

Project create/update/delete/status and project resource add/update/remove mutate durable workspace state and affect future tasks. Ask before changing local_directory unless the user explicitly requested that exact local path.

More source-backed details: references/projects-and-resources-source-map.md.