---
title: "Snapshot the draft as an immutable published version."
method: POST
path: "/templates/{id}/publish"
tags: ["templates"]
---

# Snapshot the draft as an immutable published version.

`POST /templates/{id}/publish`

## Request

- Base URL: `https://api.agentisend.com`
- URL: `https://api.agentisend.com/templates/{id}/publish`
- Auth: HTTP bearer

## Path parameters

- `id` string, required: The template id or its alias.

## Headers

- `Idempotency-Key` string
- `Resend-Idempotency-Key` string

## Response `200`

Success

- PostTemplatesByIdPublishReply
  - `object` 'template', required
  - `id` string, uuid, required
  - `template` object, required
    - `object` 'template', required
    - `id` string, uuid, required
    - `name` string, required
    - `alias` string, nullable, required
    - `status` 'draft' | 'published', required
    - `current_version_number` integer, nullable, required
    - `current_version_id` string, uuid, nullable, required
    - `has_unpublished_versions` boolean, required
    - `published_at` string, date-time, nullable, required
    - `from` string, nullable, required
    - `subject` string, required
    - `reply_to` string[], nullable, required
    - `html` string, required
    - `text` string, required
    - `variables` object[], required
      - `key` string, required
      - `type` 'string' | 'number' | 'boolean', required
      - `fallback_value` union
        - string
        - number
        - boolean
    - `draft_content` union, required
      - object
        - `mode` 'block', required: block, markdown or html.
        - `blocks` union[], required: Blocks, in order. At least one.
          - union
            - object
              - …
            - object
              - …
      - object
        - `mode` 'markdown' | 'html', required: markdown or html.
        - `source` string, required: The template source. At most 512 KB when writing.
    - `draft_variables` object[], nullable, required
      - `name` string, required: Placeholder name, without the braces.
      - `type` 'string' | 'number' | 'boolean', required: string, number or boolean.
      - `required` boolean: A missing required value fails the render, unless preview is true.
      - `default` string: Used when the render call omits this name.
    - `draft_subject` string, nullable, required
    - `created_at` string, date-time, required
    - `updated_at` string, date-time, required
  - `version` object, required
    - `id` string, uuid, required
    - `template_id` string, uuid, required
    - `version_number` integer, required
    - `status` 'draft' | 'published', required
    - `content` union, required
      - object
        - `mode` 'block', required: block, markdown or html.
        - `blocks` union[], required: Blocks, in order. At least one.
          - union
            - object
              - …
            - object
              - …
      - object
        - `mode` 'markdown' | 'html', required: markdown or html.
        - `source` string, required: The template source. At most 512 KB when writing.
    - `variables` object[], required
      - `name` string, required: Placeholder name, without the braces.
      - `type` 'string' | 'number' | 'boolean', required: string, number or boolean.
      - `required` boolean: A missing required value fails the render, unless preview is true.
      - `default` string: Used when the render call omits this name.
    - `subject` string, required
    - `from` string, nullable, required
    - `reply_to` string[], nullable, required
    - `text` string, nullable, required
    - `published_at` string, date-time, nullable, required
    - `rolled_back_from` integer, nullable, required
    - `created_at` string, date-time, required

## Other responses

- `400`: The request is malformed or a field failed validation. Codes: validation_error, invalid_idempotency_key, invalid_cursor, plan_not_purchasable, stripe_signature_invalid, support_upload_rejected, sign_in_check_required.
- `401`: No usable credential was sent. Codes: missing_api_key, session_required, mfa_required.
- `403`: The credential may not do this, or the account or key is stopped. Codes: sending_domain_blocked, young_domain_held, domain_sending_disabled, domain_not_verified, onboarding_recipient_not_a_member, onboarding_sender_unavailable, account_suspended, account_sandboxed, human_action_required, csrf_origin_rejected, charge_not_this_account, invalid_api_key, restricted_api_key, insufficient_role, invite_email_mismatch, domain_scope_violation, dedicated_ip_assigned_by_us, approval_required, staff_review_required, trust_paused, kill_switch_active.
- `404`: Nothing with this id exists on the account. Codes: billing_customer_missing, not_found, session_expired, support_ticket_not_found.
- `409`: The request conflicts with the current state. Codes: domain_already_exists, template_name_taken, template_alias_taken, template_in_use, segment_in_use, contact_resubscribe_required, email_still_scheduled, domain_verified_elsewhere, domain_not_claimable, return_path_subdomain_in_use, overage_not_on_plan, term_not_on_sale, subscription_active, portal_change_unavailable, already_in_account, idempotency_in_flight, idempotency_payload_mismatch, approval_expired, support_closed, support_reopen_expired, support_merge_conflict, support_reply_too_soon.
- `413`: The request body is larger than this operation accepts. Codes: payload_too_large, support_upload_too_large.
- `415`: The request body is not JSON. Codes: unsupported_media_type.
- `422`: A field is well formed but was refused. Codes: missing_required_field, invalid_from_address, invalid_parameter, invalid_attachment, invalid_region, tracking_subdomain_unverified, tracking_subdomain_cannot_be_removed, domain_field_immutable, open_tracking_on_transactional, header_replaced, html_clipped_by_gmail, link_domain_listed, domain_blocklisted, mailbox_provider_domain, onboarding_shape_refused, dkim_key_mismatch, domain_check_window_expired, spf_conflict, spf_lookup_limit, review_sandbox_recipient_only, suppressed_recipient, content_refused, recipient_blocklisted, last_owner_required, seat_limit_reached, invite_not_valid, key_budget_exceeds_plan, domain_limit_reached, webhook_endpoint_limit_reached.
- `429`: A rate, quota or ramp ceiling was reached. Codes: onboarding_daily_cap_reached, trust_throttled, invite_limit_reached, rate_ceiling_exceeded, daily_quota_exceeded, monthly_quota_exceeded, rate_limit_exceeded, support_rate_limited.
- `500`: Something failed on our side. Codes: internal_server_error.

---

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