ddclient

ddclient is a client for Dynamic DNS (DDNS). It automates updating DNS records by periodically contacting a Dynamic DNS provider’s update endpoints using configured credentials and host parameters, typically over HTTP.

Evaluated Mar 30, 2026 (25d ago)
Homepage ↗ Repo ↗ Infrastructure dns ddns networking automation self-hosted dynamic-dns
⚙ Agent Friendliness
28
/ 100
Can an agent use this?
🔒 Security
40
/ 100
Is it safe for agents?
⚡ Reliability
35
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
0
Documentation
20
Error Messages
0
Auth Simplicity
55
Rate Limits
10

🔒 Security

TLS Enforcement
60
Auth Strength
45
Scope Granularity
10
Dep. Hygiene
50
Secret Handling
35

ddclient relies on contacting DDNS provider endpoints and storing provider credentials in configuration. Without evidence of built-in secret vault integration, scoped tokens, or robust logging redaction, secret handling and scope granularity are assessed conservatively. TLS usage is likely but provider-implementation-dependent; enforce HTTPS where supported.

⚡ Reliability

Uptime/SLA
0
Version Stability
50
Breaking Changes
50
Error Recovery
40
AF Security Reliability

Best When

You need simple, automated DDNS updates and can provide provider credentials in the expected configuration format.

Avoid When

You need strong, modern API-based auth primitives (OAuth scopes), or you require documented idempotency/retry semantics for API operations.

Use Cases

  • Keeping DNS records current for a residential or small-office IP address
  • Automating DDNS updates when an IP changes (home labs, VPN endpoints, remote access)
  • Managing multiple DDNS hostnames/accounts from a single configuration
  • Lightweight DDNS updates on servers where router DDNS is insufficient

Not For

  • High-scale DNS-as-a-service use cases (many records/tenants with strict SLAs)
  • Environments requiring a modern HTTP API with JSON webhooks and OAuth flows
  • Security-sensitive deployments needing fine-grained API scopes and centralized key management by default

Interface

REST API
No
GraphQL
No
gRPC
No
MCP Server
No
SDK
No
Webhooks
No

Authentication

Methods: Provider-specific credentials in ddclient configuration (e.g., username/password or tokens depending on provider support)
OAuth: No Scopes: No

Auth is handled through ddclient’s provider configuration rather than modern standards like OAuth scopes; scope granularity and rotation mechanisms are provider/config dependent.

Pricing

Free tier: No
Requires CC: No

ddclient itself is typically used as open-source software; costs depend on the chosen Dynamic DNS provider plan (not determined from the provided information).

Agent Metadata

Pagination
none
Idempotent
False
Retry Guidance
Not documented

Known Gotchas

  • Authentication and update behavior are provider-specific; an agent may need to model the exact ddclient configuration and provider quirks rather than a single uniform API.
  • ddclient is typically configured and run as a daemon; it is not designed as an agent-callable HTTP API, so agent integration is indirect (config generation + process management).

Alternatives

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Scores are editorial opinions as of 2026-03-30.

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