Dynu

MCP server for Dynu — a Dynamic DNS, domain registration, email hosting, and cloud compute (VPS) provider. Exposes the full public Dynu REST API v2 as MCP tools.

Overview

• Stateless HTTP service. No credentials are ever persisted — each request supplies its own API key via a header, used only for the lifetime of that single request.
• Supports concurrent requests; per-request credential isolation is done via Python contextvars, not a global/shared client instance.
• Entry points: POST /mcp (MCP protocol) and GET /health (health check).
• Default port: 8080 (configurable via MCP_HTTP_PORT).

Scope

117 tools, one per operation in Dynu's official OpenAPI 3.0 spec (Dynu.API.OAS.zip, downloaded from https://www.dynu.com/Support/API), across 6 categories: dns (30), email (36), compute (27), domain (15), monitor (7), ping (2). Per explicit user decision, this covers the full public API including write operations (POST/DELETE — adding, updating, and removing DNS records, domains, email accounts, and even VPS compute instances), not just the 66 GET read methods. MSPbots itself only calls 1 endpoint (GET /dns) — see Known Gaps for important caveats about the higher-stakes compute/domain categories.

Authentication

Dynu authenticates with a single static API key (found in the API Credentials area of the Dynu control panel). MSPbots' own integration convention sends this key as the raw value of the API-Key header, and this server forwards it exactly that way.

HEADER 授权参数说明

Header	类型	是否必填	默认值	枚举值	字段描述	Example
X-Dynu-Api-Key	string	是	无	无	Dynu 静态 API Key，原样转发为上游 API-Key 请求头	a1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6

Missing the header returns 401:

{
  "error": "Missing credentials",
  "message": "This server requires the X-Dynu-Api-Key header",
  "required_headers": ["X-Dynu-Api-Key"],
  "optional_headers": []
}

Environment Variables

Variable	类型	是否必填	默认值	说明
MCP_HTTP_PORT	int	否	8080	HTTP 监听端口
MCP_HTTP_HOST	string	否	0.0.0.0	HTTP 监听地址
DYNU_BASE_URL	string	否	https://api.dynu.com/v2	Dynu API 基础 URL

MCP Endpoint

• POST /mcp — MCP protocol (streamable HTTP transport)
• GET /health — health check, returns {"status": "ok", "service": "dynu-mcp", "transport": "http"}

Tool List

Tool names are derived from each operation's own summary in the vendor's OpenAPI spec (e.g. "Get a list of domains for DNS service" → dynu_get_list_domains_dns_service); the one naming collision (both GET /ping and POST /ping share an identical summary) is disambiguated with a _get/_post suffix. body parameters for POST operations are accepted as a generic dict — see the vendor's OpenAPI spec's Models section (linked below) for the exact field names/types of each resource.

Category	Tool	功能	方法+路径	参数
email	dynu_add_new_blacklist_email_service	Add a new blacklist for email service.	POST /email/{id}/blacklist	id(必填), body(必填,dict)
email	dynu_add_new_email_account_email_service	Add a new email account for email service.	POST /email/{id}/account	id(必填), body(必填,dict)
email	dynu_add_new_email_alias_email_service	Add a new email alias for email service.	POST /email/{id}/alias	id(必填), body(必填,dict)
email	dynu_add_new_email_distribution_list_email_service	Add a new email distribution list for email service.	POST /email/{id}/distributionlist	id(必填), body(必填,dict)
email	dynu_add_new_recipient_email_distribution_list	Add a new recipient for email distribution list.	POST /email/{id}/distributionlist/{distributionListId}/recipient	id(必填), distribution_list_id(必填), body(必填,dict)
email	dynu_add_new_whitelist_email_service	Add a new whitelist for email service.	POST /email/{id}/whitelist	id(必填), body(必填,dict)
email	dynu_get_details_blacklist_email_service	Get details of a blacklist for email service.	GET /email/{id}/blacklist/{blacklistId}	id(必填), blacklist_id(必填)
email	dynu_get_details_email_account	Get details of the email account.	GET /email/{id}/account/{accountId}	id(必填), account_id(必填)
email	dynu_get_details_email_alias	Get details of the email alias.	GET /email/{id}/alias/{aliasId}	id(必填), alias_id(必填)
email	dynu_get_details_email_distribution_list	Get details of the email distribution list.	GET /email/{id}/distributionlist/{distributionListId}	id(必填), distribution_list_id(必填)
email	dynu_get_details_email_service	Get details of an email service.	GET /email/{id}	id(必填)
email	dynu_get_details_whitelist_email_service	Get details of a whitelist for email service.	GET /email/{id}/whitelist/{whitelistId}	id(必填), whitelist_id(必填)
email	dynu_get_dkim_details_email_service	Get DKIM details of the email service.	GET /email/{id}/dkim	id(必填)
email	dynu_get_list_blacklist	Get a list of blacklist.	GET /email/{id}/blacklist	id(必填)
email	dynu_get_list_daily_limits_email_service	Get a list of daily limits for email service.	GET /email/{id}/dailylimit	id(必填)
email	dynu_get_list_distribution_lists_email_service	Get a list of distribution lists for email service.	GET /email/{id}/distributionlist	id(必填)
email	dynu_get_list_email_accounts_email_service	Get a list of email accounts for email service.	GET /email/{id}/account	id(必填)
email	dynu_get_list_email_aliases_email_service	Get a list of email aliases for email service.	GET /email/{id}/alias	id(必填)
email	dynu_get_list_email_services	Get a list of email services.	GET /email	无
email	dynu_get_list_messages_in_delivery_queue	Get a list of messages in delivery queue.	GET /email/{id}/deliveryQueue	id(必填)
email	dynu_get_list_recipients_distribution_list	Get a list of recipients of the distribution list.	GET /email/{id}/distributionlist/{distributionListId}/recipient	id(必填), distribution_list_id(必填)
email	dynu_get_list_whitelist	Get a list of whitelist.	GET /email/{id}/whitelist	id(必填)
email	dynu_remove_blacklist_email_service	Remove a blacklist from email service.	DELETE /email/{id}/blacklist/{blacklistId}	id(必填), blacklist_id(必填)
email	dynu_remove_email_account_email_service	Remove an email account from email service.	DELETE /email/{id}/account/{accountId}	id(必填), account_id(必填)
email	dynu_remove_email_alias_email_service	Remove an email alias from email service.	DELETE /email/{id}/alias/{aliasId}	id(必填), alias_id(必填)
email	dynu_remove_email_distribution_list_email_service	Remove an email distribution list from email service.	DELETE /email/{id}/distributionlist/{distributionListId}	id(必填), distribution_list_id(必填)
email	dynu_remove_existing_recipient_email_distribution_list	Remove an existing recipient from email distribution list.	DELETE /email/{id}/distributionlist/{distributionListId}/recipient/{recipientId}	id(必填), distribution_list_id(必填), recipient_id(必填)
email	dynu_remove_whitelist_email_service	Remove a whitelist from email service.	DELETE /email/{id}/whitelist/{whitelistId}	id(必填), whitelist_id(必填)
email	dynu_this_operation_autogenerates_dkim_details_including_private_key_email_service	This operation auto-generates DKIM details including the private key of the email service.	GET /email/{id}/autogeneratedkim	id(必填)
email	dynu_update_details_existing_blacklist_email_service	Update details of an existing blacklist for email service.	POST /email/{id}/blacklist/{blacklistId}	id(必填), blacklist_id(必填), body(必填,dict)
email	dynu_update_details_existing_whitelist_email_service	Update details of an existing whitelist for email service.	POST /email/{id}/whitelist/{whitelistId}	id(必填), whitelist_id(必填), body(必填,dict)
email	dynu_update_dkim_details_email_service	Update DKIM details for the email service.	POST /email/{id}/dkim	id(必填), body(必填,dict)
email	dynu_update_email_service	Update an email service.	POST /email/{id}	id(必填), body(必填,dict)
email	dynu_update_existing_email_account_email_service	Update an existing email account for email service.	POST /email/{id}/account/{accountId}	id(必填), account_id(必填), body(必填,dict)
email	dynu_update_existing_email_alias_email_service	Update an existing email alias for email service.	POST /email/{id}/alias/{aliasId}	id(必填), alias_id(必填), body(必填,dict)
email	dynu_update_existing_email_distribution_list_email_service	Update an existing email distribution list for email service.	POST /email/{id}/distributionlist/{distributionListId}	id(必填), distribution_list_id(必填), body(必填,dict)
dns	dynu_add_new_dns_record_dns_service	Add a new DNS record for DNS service.	POST /dns/{id}/record	id(必填), body(必填,dict)
dns	dynu_add_new_dns_service	Add a new DNS service.	POST /dns	body(必填,dict)
dns	dynu_add_new_group	Add a new group.	POST /dns/group	body(必填,dict)
dns	dynu_add_new_web_redirect	Add a new web redirect.	POST /dns/{id}/webredirect	id(必填), body(必填,dict)
dns	dynu_disable_dns_record_dns_service	Disable the DNS record for DNS service.	GET /dns/{id}/record/{dnsRecordId}/disable	id(必填), dns_record_id(必填)
dns	dynu_disable_dnssec_dns_service	Disable DNSSEC for DNS service.	GET /dns/{id}/dnssec/disable	id(必填)
dns	dynu_ds_record_dnssec_dns_service	DS record of DNSSEC for DNS service.	GET /dns/{id}/dnssec	id(必填)
dns	dynu_enable_dns_record_dns_service	Enable the DNS record for DNS service.	GET /dns/{id}/record/{dnsRecordId}/enable	id(必填), dns_record_id(必填)
dns	dynu_enable_dnssec_dns_service	Enable DNSSEC for DNS service.	GET /dns/{id}/dnssec/enable	id(必填)
dns	dynu_get_details_dns_record_dns_service	Get details of a DNS record for DNS service.	GET /dns/{id}/record/{dnsRecordId}	id(必填), dns_record_id(必填)
dns	dynu_get_details_domain_dns_service	Get details of a domain for DNS service.	GET /dns/{id}	id(必填)
dns	dynu_get_details_web_redirect	Get details of the web redirect.	GET /dns/{id}/webRedirect/{webRedirectId}	id(必填), web_redirect_id(必填)
dns	dynu_get_dns_records_based_hostname_and_resource_record_type	Get DNS records based on a hostname and resource record type.	GET /dns/record/{hostname}	hostname(必填), record_type(必填)
dns	dynu_get_list_dns_records_dns_service	Get a list of DNS records for DNS service.	GET /dns/{id}/record	id(必填)
dns	dynu_get_list_domains_dns_service	Get a list of domains for DNS service.	GET /dns	无
dns	dynu_get_list_groups_which_hosts_are_assigned	Get a list of groups to which hosts are assigned to.	GET /dns/group	无
dns	dynu_get_list_ip_address_updates	Get a list of IP address updates.	GET /dns/ipUpdateHistory	无
dns	dynu_get_list_top_levels	Get a list of top levels.	GET /dns/toplevel	无
dns	dynu_get_list_web_redirects	Get a list of web redirects.	GET /dns/{id}/webredirect	id(必填)
dns	dynu_get_root_domain_name_based_hostname	Get the root domain name based on a hostname.	GET /dns/getroot/{hostname}	hostname(必填)
dns	dynu_limits_associated_dns_records	Limits associated with DNS records.	GET /dns/{id}/limit	id(必填)
dns	dynu_limits_associated_hostnames	Limits associated with hostnames.	GET /dns/limit	无
dns	dynu_remove_dns_record_dns_service	Remove a DNS record from DNS service.	DELETE /dns/{id}/record/{dnsRecordId}	id(必填), dns_record_id(必填)
dns	dynu_remove_domain_dns_service	Remove domain from DNS service.	DELETE /dns/{id}	id(必填)
dns	dynu_remove_group	Remove a group.	DELETE /dns/group/{id}	id(必填)
dns	dynu_remove_web_redirect	Remove a web redirect.	DELETE /dns/{id}/webRedirect/{webRedirectId}	id(必填), web_redirect_id(必填)
dns	dynu_update_existing_dns_record_dns_service	Update an existing DNS record for DNS service.	POST /dns/{id}/record/{dnsRecordId}	id(必填), dns_record_id(必填), body(必填,dict)
dns	dynu_update_existing_dns_service	Update an existing DNS service.	POST /dns/{id}	id(必填), body(必填,dict)
dns	dynu_update_existing_group	Update an existing group.	POST /dns/group/{id}	id(必填), body(必填,dict)
dns	dynu_update_existing_web_redirect	Update an existing web redirect.	POST /dns/{id}/webRedirect/{webRedirectId}	id(必填), web_redirect_id(必填), body(必填,dict)
compute	dynu_change_operating_system_password	Change the operating system password.	POST /compute/instance/{id}/password	id(必填), body(必填,dict)
compute	dynu_change_vnc_password	Change the VNC password.	POST /compute/instance/{id}/vnc	id(必填), body(必填,dict)
compute	dynu_create_manual_backup	Create a manual backup.	POST /compute/instance/{id}/backup	id(必填)
compute	dynu_create_or_update_reverse_dns_mapping	Create or update a reverse DNS mapping.	POST /compute/instance/{id}/reversedns	id(必填), body(必填,dict)
compute	dynu_create_snapshot	Create a snapshot.	POST /compute/instance/{id}/snapshot	id(必填)
compute	dynu_get_instance	Get an instance.	GET /compute/instance/{id}	id(必填)
compute	dynu_get_list_active_tasks	Get a list of active tasks.	GET /compute/instance/{id}/task	id(必填)
compute	dynu_get_list_backups	Get a list of backups.	GET /compute/instance/{id}/backup	id(必填)
compute	dynu_get_list_instances	Get a list of instances.	GET /compute/instance	无
compute	dynu_get_list_operating_systems_available_reinstall	Get a list of operating systems available for reinstall.	GET /compute/os	无
compute	dynu_get_list_snapshots	Get a list of snapshots.	GET /compute/instance/{id}/snapshot	id(必填)
compute	dynu_get_network_settings	Get network settings.	GET /compute/instance/{id}/network	id(必填)
compute	dynu_get_reverse_dns_mappings	Get reverse DNS mappings.	GET /compute/instance/{id}/reversedns	id(必填)
compute	dynu_get_vnc_connection_details	Get VNC connection details.	GET /compute/instance/{id}/vnc	id(必填)
compute	dynu_mount_iso_image	Mount an ISO image.	POST /compute/instance/{id}/mountiso	id(必填), body(必填,dict)
compute	dynu_reinstall_operating_system	Reinstall the operating system.	POST /compute/instance/{id}/reinstall	id(必填), body(必填,dict)
compute	dynu_remove_all_snapshots	Remove all snapshots.	DELETE /compute/instance/{id}/snapshot	id(必填)
compute	dynu_remove_backup	Remove a backup.	DELETE /compute/instance/{id}/backup/{backupId}	id(必填), backup_id(必填)
compute	dynu_remove_ipv6_reverse_dns_mapping	Remove an IPv6 reverse DNS mapping.	DELETE /compute/instance/{id}/reversedns/{ptrRecordId}	id(必填), ptr_record_id(必填)
compute	dynu_remove_snapshot	Remove a snapshot.	DELETE /compute/instance/{id}/snapshot/{snapshotId}	id(必填), snapshot_id(必填)
compute	dynu_restart_instance	Restart an instance.	GET /compute/instance/{id}/restart	id(必填)
compute	dynu_restore_backup	Restore a backup.	GET /compute/instance/{id}/backup/{backupId}/restore	id(必填), backup_id(必填)
compute	dynu_restore_snapshot	Restore a snapshot.	GET /compute/instance/{id}/snapshot/{snapshotId}/restore	id(必填), snapshot_id(必填)
compute	dynu_start_instance	Start an instance.	GET /compute/instance/{id}/start	id(必填)
compute	dynu_stop_suspend_instance	Stop (suspend) an instance.	GET /compute/instance/{id}/stop	id(必填)
compute	dynu_unmount_iso_image	Unmount the ISO image.	POST /compute/instance/{id}/unmountiso	id(必填), body(必填,dict)
compute	dynu_update_instance_label_or_cpu_emulation_mode	Update an instance label or CPU emulation mode.	POST /compute/instance/{id}	id(必填), body(必填,dict)
domain	dynu_add_glue_record_domain	Add a glue record to a domain.	POST /domain/{id}/glueRecord	id(必填), body(必填,dict)
domain	dynu_add_name_server_domain	Add a name server to a domain.	GET /domain/{id}/nameServer/add	id(必填), name_server(必填)
domain	dynu_cancel_domain	Cancel a domain.	GET /domain/{id}/cancel	id(必填)
domain	dynu_delete_glue_record_domain	Delete a glue record of a domain.	DELETE /domain/{id}/glueRecord/{glueRecordId}	id(必填), glue_record_id(必填)
domain	dynu_delete_name_server_domain	Delete a name server of a domain.	DELETE /domain/{id}/nameServer	id(必填), name_server(必填)
domain	dynu_disable_autorenewal_domain	Disable autorenewal for a domain.	GET /domain/{id}/autorenewDisable	id(必填)
domain	dynu_enable_autorenewal_domain	Enable autorenewal for a domain.	GET /domain/{id}/autorenewEnable	id(必填)
domain	dynu_get_details_domain_registration_domain	Get details of a domain registration domain.	GET /domain/{id}	id(必填)
domain	dynu_get_list_domains_domain_registration_service	Get a list of domains for domain registration service.	GET /domain	无
domain	dynu_get_list_glue_records_domain	Get a list of glue records for a domain.	GET /domain/{id}/glueRecord	id(必填)
domain	dynu_get_list_name_servers_domain	Get a list of name servers for a domain.	GET /domain/{id}/nameServer	id(必填)
domain	dynu_lock_domain	Lock a domain.	GET /domain/{id}/lock	id(必填)
domain	dynu_make_name_server_primary_name_server_domain	Make a name server the primary name server of a domain.	GET /domain/{id}/nameServer/primary	id(必填), name_server(必填)
domain	dynu_unlock_domain	Unlock a domain.	GET /domain/{id}/unlock	id(必填)
domain	dynu_update_glue_record_domain	Update a glue record of a domain.	POST /domain/{id}/glueRecord/{glueRecordId}	id(必填), glue_record_id(必填), body(必填,dict)
monitor	dynu_add_new_monitor	Add a new monitor.	POST /monitor	body(必填,dict)
monitor	dynu_delete_monitor	Delete a monitor.	DELETE /monitor/{id}	id(必填)
monitor	dynu_get_details_monitor	Get details of a monitor.	GET /monitor/{id}	id(必填)
monitor	dynu_get_list_monitors	Get a list of monitors.	GET /monitor	无
monitor	dynu_limits_associated_monitoring	Limits associated with monitoring.	GET /monitor/limit	无
monitor	dynu_pause_monitor	Pause a monitor.	GET /monitor/{id}/pause	id(必填)
monitor	dynu_unpause_monitor	Unpause a monitor.	GET /monitor/{id}/unpause	id(必填)
ping	dynu_ping_api_server_obtain_pong_response_get	Ping the API server to obtain the pong response.	GET /ping	message(必填)
ping	dynu_ping_api_server_obtain_pong_response_post	Ping the API server to obtain the pong response.	POST /ping	body(必填,dict)

测试示例

# Health check
curl -s http://localhost:8080/health

# Call a tool via the MCP protocol (streamable HTTP) — requires an
# initialize handshake first per the MCP spec; abbreviated example below
# shows the tool-call request body only:
curl -s -X POST http://localhost:8080/mcp   -H "X-Dynu-Api-Key: <your-dynu-api-key>"   -H "Content-Type: application/json"   -H "Accept: application/json, text/event-stream"   -H "mcp-session-id: <session-id-from-initialize>"   -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "dynu_get_list_domains_dns_service",
      "arguments": {}
    }
  }'

Live-verified (2026-07-29): dynu_get_list_domains_dns_service (the same endpoint MSPbots itself calls, zero parameters) was called end-to-end through this running server with a real API key and returned real DNS domain records for the account.

API Reference

• Overview: https://www.dynu.com/Support/API
• Official OpenAPI 3.0 spec (Swagger): https://www.dynu.com/files/dynu.api/Dynu.API.OAS.zip

Known Gaps

• Full API coverage was an explicit user decision, matching the pattern used for other large public APIs in this program (e.g. ConnectSecure, Cove Data Protection). Unlike those, Dynu's compute category manages real VPS instances (start/stop/restart/reinstall OS/change password/mount ISO) and domain includes registrar-level actions (lock/unlock/cancel a domain, manage nameservers) — these are meaningfully higher-stakes than DNS record management. Treat any tool whose name starts with dynu_reinstall_, dynu_stop_, dynu_cancel_, dynu_change_operating_system_password_, or similar as destructive/ irreversible and confirm with a human before invoking.
• body parameters are untyped (dict) rather than fully modeled — the OpenAPI spec's Models section defines the exact schema per resource (e.g. DNS.dnsRecordA, Compute.instanceUpdate), but reproducing all of them as typed Python parameters was out of scope for a 117-tool generation. Callers should shape the body dict per the linked spec.
• Only dynu_get_list_domains_dns_service (MSPbots' own endpoint) was live-verified with real account data. The remaining 116 tools are structurally correct (schema validated, MCP-protocol tools/list confirmed) but not individually smoke-tested — most are write/destructive operations that would create, modify, or delete real DNS records, domains, email accounts, or VPS instances, so they weren't exercised against the live test account.