Create a capsule

Package this capsule as a Claude Code agent. Omit to inherit the Type's packaging default; set explicitly to override. Encrypted capsules can't be agents.

Required alongside content_md: "" when the Type has an output_template: confirms you want an empty authored body instead of the template. false asks for the refusal (422 empty_body_on_templated_type) now; omitting it is accepted with a warning until the API changelog's effective date, then refused.

Markdown body. Omit it to borrow the Type's output template (when the Type has one). Send body text to author the body. Send an empty string for an empty authored body; on a Type with an output template that also needs authored_blank: true (see authored_blank). Maximum length is configured per-Type via content_md_max (default 20000, ceiling 90000).

Draft attachment session id; required when draftAttachmentIds is present.

Create the capsule in the incomplete state (issue #1703): the Type's required fields need not be satisfied yet, so it can be captured before its values are known. Provided values are still validated. Complete it later with incomplete: false, which enforces the required fields at that point.

Expose this capsule on the MCP prompts surface. Omit to inherit the Type's default; set explicitly to override. Toggling it does not move the capsule or change its @type/ref.

UUID v4 string

Set true to reuse an alias that belonged to a deleted capsule. Without it, such an alias is dropped like any other collision. Only frees an alias no existing capsule answers to; older mentions of it stay unresolved and only new mentions reach this capsule.

How this capsule renders on its public share page: article, prompt, or showcase. Omit (or send null on update) to INHERIT the Type's share_template live; a concrete value pins it permanently. Independent of is_prompt (which controls MCP prompt exposure).

Optional human-readable alias (@type/alias). Lowercase slug, max 60 chars, not purely numeric. Resolves to the same capsule as its numeric ref.

Optional short summary (LLM-generated or hand-written).

Human-readable capsule title

Target Type by UUID. Omit to fall back to the user's default Type for the workspace, or name the Type by slug via type_slug instead.

Target Type by slug (e.g. receipts), resolved to the caller's Type of that slug in the destination workspace. An alternative to type_id; supplying both is accepted only when they name the same Type, else 422. Omit both to fall back to the default Type.

Workspace context. Accepts: "personal" for your personal workspace, an organization workspace name (full or partial — e.g. "Verdant Studio" or "Verdant"), or a workspace UUID. The MCP server resolves names against the user's accessible workspaces; ambiguous or unknown names return an error listing available workspaces — call list_workspaces in that case. Omit to use the default: personal for personal API keys, the bound organization for organization API keys.

Wrapped per-capsule content-encryption key (E2EE)

UUID v4 string

The owning capsule's id, when this is an owned log and you may read the owner; otherwise null. Always null in write responses.

What the capsule's shared page renders, after the cover fallback: a Showcase with no cover image renders as article. Present on server single-capsule reads and write responses, absent where cover presence was not looked up.

Why share_display_rendered differs from share_display_effective: showcase_no_cover when Showcase was chosen and the capsule has no cover image, else null. Present exactly when share_display_rendered is.

Present with name_changed: the name the next publish would serve it under.

Present with name_changed: the name the skill is served under now.

UUID v4 string