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POST
Call email_template.save_draft

Authorizations

Authorization
string
header
required

An API key minted at Settings › API & MCP. Send it as Authorization: Bearer <key>. A key carries its holder's own permissions, resolved on every call — revoking a membership closes the key's reach immediately. Keep it in an environment variable (GOOSY_API_KEY), never in a committed file.

Headers

x-request-id
string

Your own id for this request, echoed back and recorded on the audit trail. 1–128 characters from A–Z a–z 0–9 . _ : -, starting with a letter or digit; anything else is replaced by a generated id.

Maximum string length: 128

Body

application/json
template_id
string<uuid>
required

The email template, as email_template.list_versions or email_template.create named it.

mjml_source
string

The template's whole design as MJML. Leave it out to keep the design as it stands and change only the subject or regions.

Required string length: 1 - 500000
subject
string | null

The template's own subject line. Leave it out to keep it; null clears it.

Maximum string length: 200
content
object | null

The editor's region overrides as one JSON object. Leave it out to keep them; null clears them.

expected_revision
integer

The open draft's revision as email_template.list_versions or the last save reported it. Leave it out only when no draft is open.

Required range: x >= 1
workspace
string

Which workspace to run in — its slug. Omit to use your default. With more than one reachable workspace and no default, the call is refused and the choices are listed.

Minimum string length: 1

Response

The call was admitted and dispatched. ok says whether the tool succeeded — a refusal the tool itself produced is still a 200, exactly as it is a successful JSON-RPC result over MCP.

The tool ran and answered.

ok
boolean
required
template_id
string
required
draft_version
number
required
revision
number
required
current_version
number | null
required
workspace
string
required

The slug of the workspace this call ran in.

working_in
object
required

Which workspace this call ran in, and how that was decided. Present on every workspace-scoped result.