set_project_execution_mode

SERVERMeridian SOURCE@meridianmcp/mcp

Medium RISK CLASS

Category Write

Parameters 31 required

Recommended Rate-limitedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/io-github-ajc3xc-meridian/set-project-execution-mode.md

WHAT IT DOES

What set_project_execution_mode does on Meridian

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

Parameter	Type	Required	Description
`project_id`	string	—
`project_name`	string	—	Project name — an alternative to project_id; resolved to the id internally. project_id wins if both are given.
`execution_mode`	string	Yes	The new executor posture.

Parameters from the server's own tool schema.

RISK

Why set_project_execution_mode is rated Medium

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

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set_project_execution_mode safely

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

set_project_execution_mode Rate-limited

set_project_execution_mode 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": {
    "set_project_execution_mode": {
      "limits": [
        {
          "counter": "set_project_execution_mode_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 Meridian, apply this rule, and every set_project_execution_mode call is checked against it from then on.

FAQ

Questions about set_project_execution_mode

What does the set_project_execution_mode tool do? +

[MAINTENANCE] c39a1bd3 — set, change, or repair the executor posture on an EXISTING project (create_project only accepts execution_mode at creation time, and the workspace's execution_mode_default only cascades onto NEW projects — neither path can repair an already-created project's persisted mode). Confirmed live 2026-08-26: a child project can end up interactive/relaxed despite explicit autonomous instructions in its own project prose, with no prior MCP path to correct it (only the dashboard's PATCH /projects/{id}/settings route could). 'autonomous' (default) claims and runs sprint items immediately without asking; 'interactive' asks for direction first. Returns the updated project, or {error} if it does not exist. Persistent-state disclosure: on hosted Meridian, supplied text and project/session metadata -- including task log entries, pinned decisions, sprint items, notes, handoff/goal state, and HITL queue items -- are sent to and stored in Meridian's service, in an isolated per-tenant Postgres database (Neon); self-hosted deployments keep the same categories in the configured local SQLite/Postgres database. This data is visible in the dashboard and API, and may resurface in later project context or handoffs. Notes and pinned decisions can be deleted individually; task log entries and sprint items can be deleted via the dashboard/API (not exposed as an agent-facing tool); HITL queue items and handoff state have no per-record delete. Full removal of any of this data is available via project or account deletion, using the documented controls. Do not include secrets. It is categorised as a Write tool in the Meridian MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does set_project_execution_mode accept? +

set_project_execution_mode accepts 3 parameters: project_id, project_name, execution_mode. Required: execution_mode. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on set_project_execution_mode? +

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

What risk level is set_project_execution_mode? +

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

Can I rate-limit set_project_execution_mode? +

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

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

set_project_execution_mode is provided by the Meridian MCP server (@meridianmcp/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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