create_endpoint

Create an endpoint under a line. Defaults to immediate publish; draft mode requires draftRevision. scheduledAt stages the line draft then schedules it. Requires edit access.

SERVEREchoRelay SOURCEhttps://mcp.echorelay.dev

Medium RISK CLASS

Category Write

Parameters 52 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/dev-echorelay-management/create-endpoint.md

WHAT IT DOES

What create_endpoint does on EchoRelay

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

Parameter	Type	Required	Description
`lineKey`	string	Yes	The line key to create the endpoint under.
`endpoint`	object	Yes	An EchoRelay endpoint. Round-trips with the JSON returned by get_endpoint.
`commitMode`	string	—	Defaults to publish. Draft writes require draftRevision.
`scheduledAt`	string	—	Compatibility alias: stage this endpoint in its line draft then schedule that line.
`draftRevision`	integer	—	Current line draft revision, required for draft writes.

Parameters from the server's own tool schema.

RISK

Why create_endpoint is rated Medium

An AI agent can call create_endpoint faster than any human can review: one bad instruction and it creates or modifies resources in EchoRelay by the hundred, each call as confident as the last.

Risk signalsAccepts URL/endpoint input (endpoint) · Handles credentials or secrets (endpoint.targets[].auth) · Accepts raw HTML/template content (endpoint.targets[].mapping[].template) · High parameter count (56 properties)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_endpoint 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 create_endpoint, this is the rule to start with:

create_endpoint Rate-limited

create_endpoint 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": {
    "create_endpoint": {
      "limits": [
        {
          "counter": "create_endpoint_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 EchoRelay, apply this rule, and every create_endpoint call is checked against it from then on.

FAQ

Questions about create_endpoint

What does the create_endpoint tool do? +

Create an endpoint under a line. Defaults to immediate publish; draft mode requires draftRevision. scheduledAt stages the line draft then schedules it. Requires edit access. It is categorised as a Write tool in the EchoRelay MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does create_endpoint accept? +

create_endpoint accepts 5 parameters: lineKey, endpoint, commitMode, scheduledAt, draftRevision. Required: lineKey, endpoint. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on create_endpoint? +

Register the EchoRelay MCP server in PolicyLayer and add a rule for create_endpoint: 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 create_endpoint? +

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

Can I rate-limit create_endpoint? +

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

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

create_endpoint 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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