포스트를 시리즈에 추가합니다. post_id는 velog_publish_post 또는 velog_list_posts 응답에서 확인할 수 있습니다.
AI agents use velog_append_to_series to create or update resources in Velog — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Velog environment.
This operation creates or modifies a relationship between a post and a series container—a reversible change to metadata/organization. It does not delete data (Destructive), execute code (Execute), move money (Financial), or merely read (Read). While it has Write-like characteristics, the scope is limited to organizing existing content.
From the tool's definition Tool name 'velog_append_to_series' and description indicate it adds/appends a post to a series, which modifies the association between existing posts and series collections. The description states '포스트를 시리즈에 추가합니다' (adds a post to a series).
Documented attack patterns abuse exactly the kind of access velog_append_to_series gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Velog, and nothing reaches the server without passing your rules. This is the rule we recommend for velog_append_to_series:
{
"version": "1",
"default": "deny",
"tools": {
"velog_append_to_series": {
"limits": [
{
"counter": "velog_append_to_series_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}velog_append_to_series stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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포스트를 시리즈에 추가합니다. post_id는 velog_publish_post 또는 velog_list_posts 응답에서 확인할 수 있습니다. It is categorised as a Write tool in the Velog MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Velog MCP server in PolicyLayer and add a rule for velog_append_to_series: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Velog. Nothing to install.
velog_append_to_series is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the velog_append_to_series rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for velog_append_to_series. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
velog_append_to_series is provided by the Velog MCP server (seongwon030/velog_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Velog, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
29 Velog tools catalogued and risk-classified — across an index of 43,000+ MCP servers.