Withings MCP

Update Delx Wellness Profile

withings_profile_update

Persist partial updates to your local wellness profile for preferences, goals, devices, training/nutrition context, and safety flags. Requires explicit user intent and rejects secret-like fields.

Instructions

Persist a partial patch to ~/.delx-wellness/profile.json. Requires explicit_user_intent=true (otherwise returns USER_ACTION_REQUIRED). Rejects secret-like fields (oauth, token, secret, password, cookie, refresh, api_key, session) at write time. Use to record preferred name, goals, devices, training context, nutrition context, exercise preferences, agent preferences, and safety flags.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "patch": "<patch>"
    },
    "name": "withings_profile_update"
  }
}

Input Schema

Name	Required	Description	Default
`patch`	Yes	Partial WellnessProfileDocument patch. Top-level keys: profile, goals, devices, training, nutrition, preferences, safety, notes.
`response_format`	No		markdown
`explicit_user_intent`	No	Must be true to persist. Prevents accidental writes from agent inference.

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.4.6Jun 26, 2026

TDQS

A4.2/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Adds significant behavioral context beyond annotations: describes that secret-like fields are rejected at write time and that the operation requires explicit user intent. Annotations only indicate non-read-only and non-destructive, so description fills gaps.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Concise and well-structured: front-loaded with action and path, followed by conditions, restrictions, and use cases. No superfluous sentences.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Covers all key aspects: what it does, required parameters, behavioral constraints, and typical use cases. No output schema exists, so return value description is not needed. Complete enough for a write operation.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Adds meaning beyond the input schema by explaining that the patch is partial and lists the top-level keys. Also clarifies the required condition for explicit_user_intent. Schema coverage is 67%, and description compensates well.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly states it persists a partial patch to a specific file, with an explicit verb and resource. Lists the categories of fields that can be updated, distinguishing it from sibling tools like withings_profile_get which is read-only.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides the condition that explicit_user_intent must be true, but does not explicitly guide when to use this tool versus alternatives (e.g., when to create vs update vs other operations).

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.