Save project context and files for Knowledge Transfer or saving task checkpoints to be resumed later
AI agents use ContextSave to create or update resources in Mcp Wcgw — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Wcgw environment.
ContextSave creates or modifies saved project state and checkpoint files. This is reversible (checkpoints can be overwritten or deleted), so it qualifies as Write rather than Destructive.
From the tool's definition Tool description states it 'Save[s] project context and files', which is a write operation that creates/modifies state (checkpoints, knowledge transfer artifacts).
Documented attack patterns abuse exactly the kind of access ContextSave gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Wcgw, and nothing reaches the server without passing your rules. This is the rule we recommend for ContextSave:
{
"version": "1",
"default": "deny",
"tools": {
"ContextSave": {
"limits": [
{
"counter": "contextsave_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}ContextSave 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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Save project context and files for Knowledge Transfer or saving task checkpoints to be resumed later. It is categorised as a Write tool in the Mcp Wcgw MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Mcp Wcgw MCP server in PolicyLayer and add a rule for ContextSave: 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 Mcp Wcgw. Nothing to install.
ContextSave 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 ContextSave 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 ContextSave. 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.
ContextSave is provided by the Mcp Wcgw MCP server (rusiaaman/wcgw). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 7 Mcp Wcgw tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
7 Mcp Wcgw tools catalogued and risk-classified — across an index of 42,500+ MCP servers.