MCP server changelog

0.4.0 — May 28, 2026

Form-linked CTA buttons.

• * Button blocks can now link to one of your forms instead of a URL: set { linkType: "form", formId, formSlug }(get both from list_forms) and omit href. The send path rewrites it into a tracked, name/email-prefilled form link. Reflected in list_block_types schemas.
• * lint_email now flags form-linked buttons whose target is missing/deleted (form-link-missing), archived (form-link-archived), or unpublished (form-link-unpublished), and no longer false-positives a form button as having “no link.” The form catalog is resolved from your tenant automatically.

0.3.0 — May 26, 2026

Major batch — full tool surface.

• + Diagnostics: whoami.
• + Forms admin: archive_form, publish_form, duplicate_form, add_page, update_page, delete_page, reorder_pages, update_form_settings, assign_workflow_to_form.
• + Reads: list_calendar_templates, get_calendar_template, list_contacts, get_contact, list_audiences, get_audience, list_workflow_templates, get_workflow_template, get_form_stats.
• + Submissions: bulk_recommend_submissions(HMAC confirm when matching > 25), add_submission_comment, advance_submission_status (HMAC confirm).
• + Campaigns: create_campaign, schedule_campaign, cancel_campaign, duplicate_campaign, save_as_template.
• + Contacts & audiences: add_contact, update_contact, tag_contact, create_audience, add_to_audience, remove_from_audience.
• + Workflow & calendar template writes: create_workflow_template, update_workflow_template, create_calendar_template, update_calendar_template.
• + Variables: list_variables, get_variable, set_variable_value.
• + Email templates: list_email_templates, get_email_template_full, update_email_template.
• + Tenant, media, audit: get_tenant, update_tenant_branding, list_media, delete_media, get_audit_log.
• * All write tools now carry MCP destructiveHint annotations. All reads carry readOnlyHint.
• * recommend_submission gains structured signals (concerns[], highlights[],fieldsReferenced[], suggestedAction) for richer review-panel rendering.
• * Forms now carry a revision counter for optimistic-concurrency protection across multi-tab + MCP + UI edits.
• * Every write response includes clickable deep links to the affected form / campaign / submission for in-chat hand-off.

0.2.0 — May 2026

• + Form builder tools (V2 schema): list_forms, get_form, create_form(single- and multi-page with logicRules), apply_form_tool_call, list_field_types.
• + Submissions soft-approval tools: list_submissions, get_submission, recommend_submission, clear_recommendation. recommend_submission is advisory only — never changes workflow status.
• + JSON Schemas for every form field type incl. totals(dashboard widgets + formula DSL) and rich select options.

0.1.0 — Initial release

• + MCP OAuth provider: PKCE S256 + Dynamic Client Registration + Authorization Server Metadata.
• + Campaigns tools: list_campaigns, get_campaign, set_campaign_blocks, apply_tool_call, render_email, screenshot_email, lint_email.
• + Email block templates: list_templates, get_template, apply_template_to_campaign.
• + Auto-snapshots before destructive campaign writes (list_campaign_snapshots, restore_campaign_snapshot, 30-day TTL).
• + upload_image for the media library.
• + Slash-command prompts via prompts/list.

Versioning policy

The server's MAJOR.MINOR.PATCH version is exposed at GET /api/mcp in the version field.

• Patch (0.x.Y): bug fixes, doc updates, internal refactors. No client-visible changes.
• Minor (0.X.0): new tools, new optional fields on existing tool inputs/outputs, new prompts. Backwards-compatible.
• Major (X.0.0): breaking schema changes, tool removals, scope renames. Announced ≥ 30 days in advance via this changelog and an email to active OAuth clients' registered contacts where available.