> ## Documentation Index > Fetch the complete documentation index at: https://docs.ohmyho.st/llms.txt > Use this file to discover all available pages before exploring further. > ## Agent Instructions > For account actions, read https://ohmyho.st/skills/ohmyhost-get-started/SKILL.md and use the authenticated ohmyho.st CLI, local product MCP or supported remote OAuth MCP. Read the current project source binding before choosing GitHub or managed versions. Mintlify search only reads documentation. Preserve the customer’s selected project, environment and authentication provider; keep private application values in the portal or local stdin flow. # Authorize only the frozen application TXT challenge > Explicit workspace sender authority and target project authority are checked independently. Shared sending requires current verified application identity with the same registrable main domain. Receiving and mailbox routing remain separate. ## OpenAPI ````yaml /openapi.json post /v1/projects/{project_id}/application-domain-identity/dns-authorization openapi: 3.1.2 info: title: ohmyho.st API version: 0.0.0 description: >- Public REST API for ohmyho.st hosting, projects, domains, email, credits and exports. servers: - url: https://app.ohmyho.st description: Production control API - url: https://dev.app.ohmyho.st description: Development control API security: - BearerAuth: [] paths: /v1/projects/{project_id}/application-domain-identity/dns-authorization: post: summary: Authorize only the frozen application TXT challenge description: >- Explicit workspace sender authority and target project authority are checked independently. Shared sending requires current verified application identity with the same registrable main domain. Receiving and mailbox routing remain separate. operationId: authorizeApplicationDomainIdentityDns parameters: - $ref: '#/components/parameters/RequestId' - name: project_id in: path required: true schema: $ref: '#/components/schemas/Ulid' - $ref: '#/components/parameters/IdempotencyKey' requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/SharedMailDnsAuthorizationRequest' responses: '200': description: Authorized exact resource result. content: application/json: schema: $ref: '#/components/schemas/CloudflareDnsAuthorization' '400': $ref: '#/components/responses/Problem' '401': $ref: '#/components/responses/Problem' '402': $ref: '#/components/responses/Problem' '403': $ref: '#/components/responses/Problem' '404': $ref: '#/components/responses/Problem' '409': $ref: '#/components/responses/Problem' '429': $ref: '#/components/responses/Problem' '503': $ref: '#/components/responses/Problem' components: parameters: RequestId: name: X-Request-Id in: header description: Optional caller-provided correlation identifier. required: false schema: type: string minLength: 1 maxLength: 128 IdempotencyKey: name: Idempotency-Key in: header description: Identifies one mutation and its canonical request payload. required: true schema: type: string minLength: 1 maxLength: 128 schemas: Ulid: type: string pattern: ^[0-9A-HJKMNP-TV-Z]{26}$ SharedMailDnsAuthorizationRequest: type: object additionalProperties: false required: - expected_revision - zone properties: expected_revision: type: integer minimum: 1 zone: type: string minLength: 4 maxLength: 253 pattern: >- ^(?=.{1,253}$)(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)+[a-z]{2,63}$ CloudflareDnsAuthorization: type: object description: >- Short-lived credential-free redirect information for one Cloudflare OAuth authorization. additionalProperties: false required: - authorization_id - authorization_url - expires_at properties: authorization_id: $ref: '#/components/schemas/Ulid' authorization_url: type: string format: uri minLength: 20 maxLength: 4096 pattern: ^https://dash\.cloudflare\.com/oauth2/auth\? expires_at: type: string format: date-time ProblemDetails: type: object description: RFC 9457 Problem Details extended with stable ohmyhost recovery fields. additionalProperties: false required: - type - title - status - code - request_id - retryable - suggested_action properties: type: type: string format: uri-reference title: type: string minLength: 1 status: type: integer minimum: 400 maximum: 599 detail: type: string instance: type: string format: uri-reference code: type: string enum: - invalid_request - unauthenticated - forbidden - organization_required - resource_not_found - idempotency_key_reused - project_handle_unavailable - project_identity_unavailable - deployment_plan_expired - deployment_plan_incompatible - confirmation_expired - confirmation_invalid - etag_mismatch - promotion_source_stale - promotion_target_stale - promotion_invalid_target - mail_domain_conflict - mail_domain_required - mail_capacity_unavailable - storage_jurisdiction_conflict - shared_data_requires_promotion - production_deployment_required - framework_conversion_required - repository_configuration_missing - migration_filename_noncanonical - environment_secret_mutation_blocked - workers_runtime_incompatible - project_handle_invalid - project_handle_taken - project_handle_unchanged - project_rename_blocked - payload_too_large - rate_limited - insufficient_organization_credits - paid_plan_required - project_budget_exceeded - compute_performance_paid_required - compute_performance_unavailable - database_write_pending - database_access_limit - compute_change_pending - compute_change_conflict - billing_purchase_conflict - billing_recharge_conflict - github_connection_required - github_connection_revoked - repository_not_installed - cloudflare_zone_not_bound - cloudflare_authorization_closed - project_notes_conflict - project_export_not_ready - powered_by_flag_required - interactive_login_required - api_key_creation_uncertain - api_key_permissions_unavailable - reconciliation_exhausted - service_unavailable - source_commit_not_found - domain_hostname_taken - domain_dns_conflict - data_change_blocked - data_change_in_progress - data_change_not_applicable - rollback_target_data_changed - project_domain_delete_required request_id: type: string minLength: 1 maxLength: 128 retryable: type: boolean retry_after_seconds: type: integer minimum: 1 maximum: 86400 description: >- Optional machine-readable retry delay for a rate limit, matching Retry-After. suggested_action: type: string minLength: 1 responses: Problem: description: The request failed. headers: X-Request-Id: $ref: '#/components/headers/XRequestId' content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' headers: XRequestId: description: Correlates the request with operations, events, logs, and audit records. required: true schema: type: string minLength: 1 maxLength: 128 securitySchemes: BearerAuth: type: http scheme: bearer description: >- WorkOS access JWT or a user-owned WorkOS API key. User keys are bound to one organization and restricted to their enabled product permissions. Session-only onboarding and session revocation require an interactive access JWT. No cookie session is assumed. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.