memory_reverse_mwt
Reverse memory write trace — given a code address, find what data addresses the instruction accesses. Inverse of memory_find_accesses. Disassembles the instruction at the given address using Capstone, then resolves RIP-relative and absolute memory operands to their target addresses. Returns instr...
This record as markdown: /tools/io-github-vmoranv-jshookmcp/memory-reverse-mwt.md
What memory_reverse_mwt does on Jshookmcp
AI agents use memory_reverse_mwt to create or update resources in Jshookmcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Jshookmcp environment.
Why memory_reverse_mwt is rated Medium
An AI agent can call memory_reverse_mwt faster than any human can review: one bad instruction and it creates or modifies resources in Jshookmcp by the hundred, each call as confident as the last.
Attacks that exploit this kind of access
The rule that runs memory_reverse_mwt safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Jshookmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For memory_reverse_mwt, this is the rule to start with:
memory_reverse_mwt 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 Jshookmcp, apply this rule, and every memory_reverse_mwt call is checked against it from then on.
Questions about memory_reverse_mwt
Reverse memory write trace — given a code address, find what data addresses the instruction accesses. Inverse of memory_find_accesses. Disassembles the instruction at the given address using Capstone, then resolves RIP-relative and absolute memory operands to their target addresses. Returns instruction text, raw bytes, and a list of accessed addresses with access type (READ/WRITE/RIP_REL). Useful for understanding what data a specific piece of code operates on. It is categorised as a Write tool in the Jshookmcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Jshook MCP server in PolicyLayer and add a rule for memory_reverse_mwt: 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 Jshookmcp. Nothing to install.
memory_reverse_mwt 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 memory_reverse_mwt 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 memory_reverse_mwt. 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.
memory_reverse_mwt is provided by the Jshook MCP server (@jshookmcp/jshook). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Jshook, and thousands of servers like it.
This server
Across the catalogue