Record the pre-write verification ledger required by loaded ingest skills. Call this before wiki/SL/fallback writes to state what was verified, which tool calls support it, and what remains intentionally unverified.
AI agents use record_verification_ledger to create or update resources in Ktx — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ktx environment.
This tool creates or modifies verification ledger records as a prerequisite to write operations. While it doesn't directly mutate business data, it records metadata about verification state in preparation for writes elsewhere. It is reversible (a ledger entry can be corrected or superseded) and has limited blast radius compared to Execute or Destructive actions.
From the tool's definition Tool name 'record_verification_ledger' and description 'Record the pre-write verification ledger' indicates creating/modifying a ledger record. The phrase 'Call this before wiki/SL/fallback writes' shows it prepares data for subsequent write operations.
Documented attack patterns abuse exactly the kind of access record_verification_ledger gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Ktx, and nothing reaches the server without passing your rules. This is the rule we recommend for record_verification_ledger:
{
"version": "1",
"default": "deny",
"tools": {
"record_verification_ledger": {
"limits": [
{
"counter": "record_verification_ledger_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}record_verification_ledger 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.
Free to start. No card required.
Record the pre-write verification ledger required by loaded ingest skills. Call this before wiki/SL/fallback writes to state what was verified, which tool calls support it, and what remains intentionally unverified. It is categorised as a Write tool in the Ktx MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Ktx MCP server in PolicyLayer and add a rule for record_verification_ledger: 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 Ktx. Nothing to install.
record_verification_ledger 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 record_verification_ledger 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 record_verification_ledger. 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.
record_verification_ledger is provided by the Ktx MCP server (kaelio/ktx). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Ktx, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
10 Ktx tools catalogued and risk-classified — across an index of 43,000+ MCP servers.