Last Look Back — Safe Atomic Write advisory. Runs the full LLB preflight (Gate 1: blacklist + tier classification + intent validation) and returns a ternary verdict: +1 allow / 0 hold (local-only) / -1 veto. Note: actual filesystem writes require local stdio installation (cargo install ternlang-m...
Risk signalsAccepts file system path (path) · Accepts raw HTML/template content (content)
Part of the Ternary Intelligence Stack server.
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AI agents use llb_write_safe to create or modify resources in Ternary Intelligence Stack. 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 llb_write_safe 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 Ternary Intelligence Stack.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"llb_write_safe": {
"limits": [
{
"counter": "llb_write_safe_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Ternary Intelligence Stack policy for all 34 tools.
These attack patterns abuse exactly the kind of access llb_write_safe 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.
Last Look Back — Safe Atomic Write advisory. Runs the full LLB preflight (Gate 1: blacklist + tier classification + intent validation) and returns a ternary verdict: +1 allow / 0 hold (local-only) / -1 veto. Note: actual filesystem writes require local stdio installation (cargo install ternlang-mcp) — this HTTP endpoint returns the pre-flight verdict only.. It is categorised as a Write tool in the Ternary Intelligence Stack MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Ternary Intelligence Stack MCP server in PolicyLayer and add a rule for llb_write_safe: 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 Ternary Intelligence Stack. Nothing to install.
llb_write_safe 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 llb_write_safe 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 llb_write_safe. 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.
llb_write_safe is provided by the Ternary Intelligence Stack MCP server (rfi-irfos/ternlang). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 34 Ternary Intelligence Stack tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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