edit_x_post
EDIT the text of one of the connected account’s own posts on X. Three things about X’s edit model change how you must use this and none is guessable: (1) X REPLACES THE WHOLE TEXT — there is no partial patch, so pass the complete new post; (2) an edit MINTS A NEW POST ID, and the old id keeps res...
This record as markdown: /tools/hermoso/edit-x-post.md
What edit_x_post does on Hermoso
AI agents use edit_x_post to create or update resources in Hermoso, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Hermoso environment.
Why edit_x_post is rated Medium
An AI agent can call edit_x_post faster than any human can review: one bad instruction and it creates or modifies resources in Hermoso by the hundred, each call as confident as the last.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
The rule that runs edit_x_post safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Hermoso, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For edit_x_post, this is the rule to start with:
edit_x_post 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Hermoso, apply this rule, and every edit_x_post call is checked against it from then on.
Questions about edit_x_post
EDIT the text of one of the connected account’s own posts on X. Three things about X’s edit model change how you must use this and none is guessable: (1) X REPLACES THE WHOLE TEXT — there is no partial patch, so pass the complete new post; (2) an edit MINTS A NEW POST ID, and the old id keeps resolving and keeps showing the OLD text, so always hand the user the NEW url afterwards or they will circulate a link to the version they just corrected; (3) X’s window is ONE HOUR from the ORIGINAL post and DOES NOT RESTART when a post is edited, and each post has a limited number of edits. Pass whichever id the user has — Hermoso reads X’s edit chain and aims at the newest id, which is the only one X accepts (an edit aimed at the id the user was originally given is refused by X once the post has been edited once). A published ARTICLE can never be edited whatever the subscription, and this says so rather than trying. Editing needs X Premium on the POSTING account; Hermoso attempts it and reports X’s own refusal rather than pre-refusing on a guess about the plan. Everything knowable for free — window closed, edits used up, post ineligible — is refused before anything is billed. Costs credits. Needs X connected. It is categorised as a Write tool in the Hermoso MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Hermoso MCP server in PolicyLayer and add a rule for edit_x_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 Hermoso. Nothing to install.
edit_x_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 edit_x_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 edit_x_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.
edit_x_post is provided by the Hermoso MCP server (https://app.hermoso.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Hermoso, and thousands of servers like it.
This server
Across the catalogue