Update an existing Circle post. Requires post_id (use circle_list_posts or circle_get_post to find IDs). Only provided fields are updated — omitted fields remain unchanged. Note: Published posts CANNOT be reverted to draft status; attempting to set status='draft' on a published post returns an er...
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Part of the Circle MCP Server server.
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AI agents use circle_update_post to create or modify resources in Circle MCP Server. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call circle_update_post repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Circle MCP Server.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"circle_update_post": {
"limits": [
{
"counter": "circle_update_post_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Circle MCP Server policy for all 16 tools.
These attack patterns abuse exactly the kind of access circle_update_post gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Update an existing Circle post. Requires post_id (use circle_list_posts or circle_get_post to find IDs). Only provided fields are updated — omitted fields remain unchanged. Note: Published posts CANNOT be reverted to draft status; attempting to set status='draft' on a published post returns an error. Returns the full updated post object.. It is categorised as a Write tool in the Circle MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Circle MCP Server MCP server in PolicyLayer and add a rule for circle_update_post: 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 Circle MCP Server. Nothing to install.
circle_update_post 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 circle_update_post 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 circle_update_post. 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.
circle_update_post is provided by the Circle MCP Server MCP server (iamnortey/circle-so-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 16 Circle MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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