safe_write_with_checkpoint

Write a config file AND automatically git-commit the current state before writing.

SERVERHa Nexus Agent SOURCEfistacho/ha-nexus-agent

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/fistacho-ha-nexus-agent/safe-write-with-checkpoint.md

WHAT IT DOES

What safe_write_with_checkpoint does on Ha Nexus Agent

AI agents use safe_write_with_checkpoint to create or update resources in Ha Nexus Agent, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ha Nexus Agent environment.

RISK

Why safe_write_with_checkpoint is rated Medium

This tool modifies configuration files (Write category). The severity is high rather than critical because: (1) the action is partially reversible through git history, which mitigates the destructive potential, and (2) the impact is scoped to config files rather than arbitrary data or system state.

From the tool's definition Write a config file AND automatically git-commit the current state before writing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs safe_write_with_checkpoint safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Ha Nexus Agent, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For safe_write_with_checkpoint, this is the rule to start with:

safe_write_with_checkpoint Rate-limited

safe_write_with_checkpoint 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "safe_write_with_checkpoint": {
      "limits": [
        {
          "counter": "safe_write_with_checkpoint_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ha Nexus Agent, apply this rule, and every safe_write_with_checkpoint call is checked against it from then on.

FAQ

Questions about safe_write_with_checkpoint

What does the safe_write_with_checkpoint tool do? +

Write a config file AND automatically git-commit the current state before writing. It is categorised as a Write tool in the Ha Nexus Agent MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on safe_write_with_checkpoint? +

Register the Ha Nexus Agent MCP server in PolicyLayer and add a rule for safe_write_with_checkpoint: 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 Ha Nexus Agent. Nothing to install.

What risk level is safe_write_with_checkpoint? +

safe_write_with_checkpoint is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit safe_write_with_checkpoint? +

Yes. Add a rate_limit block to the safe_write_with_checkpoint 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.

How do I block safe_write_with_checkpoint completely? +

Set action: deny in the PolicyLayer policy for safe_write_with_checkpoint. 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.

What MCP server provides safe_write_with_checkpoint? +

safe_write_with_checkpoint is provided by the Ha Nexus Agent MCP server (fistacho/ha-nexus-agent). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Ha Nexus Agent, and thousands of servers like it.

This server

All 276 Ha Nexus Agent tools →

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team_manager_record_checkpoint on Team Manager MCP → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →