Well

Create product component

well_create_product_component

Destructive

Add one live product as a component of another product. Repeating the same link is safe and keeps its position. A product cannot contain itself or form a component cycle.

Input Schema

Name	Required	Description
`product_id`	Yes	The parent product, from well_list_products.
`workspace_id`	No	Target workspace. Omit when the token authorizes one workspace. Required when it authorizes several — a write lands in exactly one workspace and this call would not say which.
`conversation_id`	No	The conversation id returned by the previous Well result, in its meta under well/conversation_id, in its structuredContent, or in its JSON text block. Pass it back on every call in the same conversation, including a call a card makes, so the chosen workspace and the earlier answers still apply. It decides the conversation on its own: nothing the host states about the session replaces it. Omit it only on the first call of a conversation.
`idempotency_key`	No	Optional client-supplied key. A retried write with the same key returns the original result instead of re-applying the operation.
`workspace_scope`	No	Restrict this call to the family: the token's primary workspace plus the company workspaces under it that you are a member of. Unrelated authorized workspaces drop out of the read; row reads merge across the family, while a per-workspace figure still reports exactly one workspace.
`component_product_id`	Yes	The component product, from well_list_products.

Output Schema

Name	Required	Description
`code`	No
`error`	No
`created`	No
`success`	Yes
`position`	No
`reply_lines`	No
`conversation_id`	No	The conversation this result belongs to. Pass it back as the conversation_id argument on every later Well call in the same conversation.
`near_candidates`	No
`newly_connected`	No	Tools that connected to this workspace since the last result and that no session was told about yet, oldest first. Present only when at least one tool is new. The connected-line rule says when to tell an entry; when it does, one line per entry, in the person's language: "<name> is connected.". Never fold several entries into one sentence. Each entry comes back once, on one result only: never repeat its line later.
`conversation_id_note`	No	Present only when the server opened a fresh lane, stating that no choice recorded earlier was read.
`conversation_id_source`	No	Where the conversation id came from: the host's own request meta, the caller's argument, or a fresh lane the server opened.
`near_candidates_truncated`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed4 schema fields changedOct 28, 2026

addedOutput schema / properties / code
```
Added value: +{
+  "type": "string"
+}
```

addedOutput schema / properties / near_candidates

Added value: +{
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "company_id": {
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "company_id",
+      "name"
+    ],
+    "type": "object"
+  },
+  "type": "array"
+}

addedOutput schema / properties / near_candidates_truncated
```
Added value: +{
+  "type": "boolean"
+}
```

addedOutput schema / properties / reply_lines

Added value: +{
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

AddedOct 22, 2026

TDQS

A3.8/5.0

Behavior4/5

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

Annotations already declare it as a writing, destructive-hinted, closed-world operation, so the description's job is to add behavioral detail. It does: repeat calls are idempotent and preserve position, and the operation rejects self-reference and component cycles. What it omits is whether an existing component set is appended to or replaced, and what an error looks like on cycle detection.

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?

Two sentences, zero filler, with the core operation front-loaded and the safety/validation caveats immediately after. Every clause carries information an agent would otherwise have to guess.

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?

With a rich schema, full annotation coverage, and an output schema, the description only needs to carry intent and edge-case behavior, and it covers both. The remaining gap is whether the call appends to or replaces the parent's existing component list, which matters for a repeat invocation in a changed context.

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

Parameters3/5

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

Schema description coverage is 100%, so the parameters (including workspace_id, conversation_id, idempotency_key, workspace_scope) are already documented in the schema and the baseline is 3. The description adds one semantic qualifier not in the schema, that the component must be a 'live' product, but that is modest incremental value.

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

Purpose4/5

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

States a specific verb and resource pair with directionality: 'Add one live product as a component of another product.' An agent can distinguish it from well_create_product and well_create_product_addon. It does not explicitly name the sibling well_update_product_components (bulk variant) or well_delete_product_component, so differentiation from those is inferred rather than stated.

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?

The description establishes that this creates a single link (as opposed to the bulk update sibling) and that repeats are safe, which implies when-to-use for a one-off link. It never explicitly says when NOT to use it or names the alternative tool for setting the whole component list at once, leaving that routing to inference.

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

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