add_note

SERVERMeridian SOURCE@meridianmcp/mcp

Medium RISK CLASS

Category Write

Parameters 112 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-ajc3xc-meridian/add-note.md

WHAT IT DOES

What add_note does on Meridian

AI agents use add_note 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
`body`	string	Yes
`kind`	string	—
`tags`	string	—
`title`	string	Yes
`source`	string	—	Provenance: a URL or file path this note was ingested from. Stored on the note (used by kind='document').
`symbol`	string	—	Optional symbol (class/function/method) to scope the code anchor to. File-level anchors (no symbol) surface for any symbol in the file.
`category`	string	—
`priority`	string	—	high-priority notes surface first in generate_handoff and planner context.
`file_path`	string	—	Code anchor (kind='code'): repo-relative or absolute path this note warns about. Surfaced at claim_file/get_file_claims for the same path.
`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.

Parameters from the server's own tool schema.

RISK

Why add_note is rated Medium

This tool creates and stores new wiki/reference documentation in a persistent system. It is reversible (notes can be edited or deleted later), has no side effects beyond data creation, does not execute code or commands, and does not delete or move money. It fits the Write category—a Create operation that modifies the project's knowledge base.

From the tool's definition Tool description states 'Add a per-project wiki note' with 'Free-form title/body' and optional parameters for organization. The action is creating and storing structured information persistently ('add_note' operation).

Risk signalsAccepts file system path (file_path) · Accepts raw HTML/template content (body) · High parameter count (11 properties)

Attacks that exploit this kind of access

RECOMMENDED RULE

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

add_note Rate-limited

add_note 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": {
    "add_note": {
      "limits": [
        {
          "counter": "add_note_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 add_note call is checked against it from then on.

FAQ

Questions about add_note

What does the add_note tool do? +

[SUPPORT] Add a per-project wiki note (setup, gotcha, howto, env, ...). Free-form title/body; comma-separated tags optional. Optional kind (wiki=gotcha/rule/howto, insight=strategic/product analysis, reference=external/one-off docs, code=warning/context anchored to a file, document=ingested report/spec/thesis) controls how the dashboard renders it. For a code anchor pass kind='code' plus file_path (and optional symbol): the note is then surfaced automatically when a session calls claim_file/get_file_claims for that path, so the executor sees the warning before editing. Pass source (a URL or file path) to record where the note came from — set automatically by ingest_document. Tag a note 'roadmap' AND pass a committable category (TECHNICAL/ARCHITECTURAL/PRODUCT) to also append it to ROADMAP.md's roadmap-notes anchor. Persistent-state disclosure: on hosted Meridian, supplied text and project/session metadata are sent to and stored in Meridian's service; self-hosted deployments keep them in the configured local SQLite/Postgres database. This data is visible in the dashboard/API and later project context or handoffs. Delete individual tasks, notes, or decisions where supported, or delete the project/account 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 add_note accept? +

add_note accepts 11 parameters: body, kind, tags, title, source, symbol, category, priority, file_path, project_id, project_name. Required: body, title. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on add_note? +

Register the Meridian MCP server in PolicyLayer and add a rule for add_note: 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 add_note? +

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

Can I rate-limit add_note? +

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

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

add_note 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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