list_config_revisions

List retained revisions for one line so a prior revision can be selected for rollback.

SERVEREchoRelay SOURCEhttps://mcp.echorelay.dev

Low RISK CLASS

Category Read

Parameters 11 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/dev-echorelay-management/list-config-revisions.md

WHAT IT DOES

What list_config_revisions does on EchoRelay

AI agents call list_config_revisions to retrieve information from EchoRelay without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`lineKey`	string	Yes	The line key, e.g. "v1".

Parameters from the server's own tool schema.

RISK

Why list_config_revisions is rated Low

Even though list_config_revisions only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_config_revisions safely

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

list_config_revisions Allowed

list_config_revisions is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_config_revisions": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about list_config_revisions

What does the list_config_revisions tool do? +

List retained revisions for one line so a prior revision can be selected for rollback. It is categorised as a Read tool in the EchoRelay MCP Server, which means it retrieves data without modifying state.

What parameters does list_config_revisions accept? +

list_config_revisions accepts 1 parameter: lineKey. Required: lineKey. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on list_config_revisions? +

Register the EchoRelay MCP server in PolicyLayer and add a rule for list_config_revisions: 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 EchoRelay. Nothing to install.

What risk level is list_config_revisions? +

list_config_revisions is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_config_revisions? +

Yes. Add a rate_limit block to the list_config_revisions 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 list_config_revisions completely? +

Set action: deny in the PolicyLayer policy for list_config_revisions. 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 list_config_revisions? +

list_config_revisions is provided by the EchoRelay MCP server (https://mcp.echorelay.dev). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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