track_guest_orderOrder status, tracking number/URL, shipping method and line items for any order, given the order number and the delivery postcode (no sign-in needed).
| Name | Required | Description | Default |
|---|---|---|---|
| postcode | Yes | Delivery postcode / ZIP on the order. | |
| order_number | Yes | Order number from the confirmation email. |
| Name | Required | Description | Default |
|---|---|---|---|
| order | Yes | ||
| track_url | Yes |
Changes observed during successful MCP inspections.
Output schema / properties / order / properties / discount / anyOfRemoved value: -[
- {
- "type": "number"
- },
- {
- "type": "null"
- }
-]Output schema / properties / order / properties / discount / typeAdded value: +[
+ "number",
+ "null"
+]Output schema / properties / order / properties / express_promised_dispatch_date / anyOfRemoved value: -[
- {
- "type": "string"
- },
- {
- "type": "null"
- }
-]Output schema / properties / order / properties / express_promised_dispatch_date / typeAdded value: +[
+ "string",
+ "null"
+]Output schema / properties / order / properties / items / items / properties / line_total / anyOfRemoved value: -[
- {
- "type": "number"
- },
- {
- "type": "null"
- }
-]Output schema / properties / order / properties / items / items / properties / line_total / typeAdded value: +[
+ "number",
+ "null"
+]Output schema / properties / order / properties / items / items / properties / unit_price / anyOfRemoved value: -[
- {
- "type": "number"
- },
- {
- "type": "null"
- }
-]Output schema / properties / order / properties / items / items / properties / unit_price / typeAdded value: +[
+ "number",
+ "null"
+]Output schema / properties / order / properties / paid_at / anyOfRemoved value: -[
- {
- "type": "string"
- },
- {
- "type": "null"
- }
-]Output schema / properties / order / properties / paid_at / typeAdded value: +[
+ "string",
+ "null"
+]Output schema / properties / order / properties / shipped_at / anyOfRemoved value: -[
- {
- "type": "string"
- },
- {
- "type": "null"
- }
-]Output schema / properties / order / properties / shipped_at / typeAdded value: +[
+ "string",
+ "null"
+]Output schema / properties / order / properties / shipping_company / anyOfRemoved value: -[
- {
- "type": "string"
- },
- {
- "type": "null"
- }
-]Output schema / properties / order / properties / shipping_company / typeAdded value: +[
+ "string",
+ "null"
+]Output schema / properties / order / properties / shipping_cost / anyOfRemoved value: -[
- {
- "type": "number"
- },
- {
- "type": "null"
- }
-]Output schema / properties / order / properties / shipping_cost / typeAdded value: +[
+ "number",
+ "null"
+]Output schema / properties / order / properties / shipping_method / anyOfRemoved value: -[
- {
- "type": "string"
- },
- {
- "type": "null"
- }
-]Output schema / properties / order / properties / shipping_method / typeAdded value: +[
+ "string",
+ "null"
+]Output schema / properties / order / properties / shipping_to / anyOfPrevious value: -[
- {
- "additionalProperties": false,
- "properties": {
- "city": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "country_code": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "postal_code": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- }
- },
- "required": [
- "city",
- "postal_code",
- "country_code"
- ],
- "type": "object"
- },
- {
- "type": "null"
- }
-]New value: +[
+ {
+ "additionalProperties": false,
+ "properties": {
+ "city": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "country_code": {
+ "type": [
+ "string",
+ "null"
+ ]
+ },
+ "postal_code": {
+ "type": [
+ "string",
+ "null"
+ ]
+ }
+ },
+ "required": [
+ "city",
+ "postal_code",
+ "country_code"
+ ],
+ "type": "object"
+ },
+ {
+ "type": "null"
+ }
+]Output schema / properties / order / properties / subtotal / anyOfRemoved value: -[
- {
- "type": "number"
- },
- {
- "type": "null"
- }
-]Output schema / properties / order / properties / subtotal / typeAdded value: +[
+ "number",
+ "null"
+]Output schema / properties / order / properties / tax / anyOfRemoved value: -[
- {
- "type": "number"
- },
- {
- "type": "null"
- }
-]Output schema / properties / order / properties / tax / typeAdded value: +[
+ "number",
+ "null"
+]Output schema / properties / order / properties / total / anyOfRemoved value: -[
- {
- "type": "number"
- },
- {
- "type": "null"
- }
-]Output schema / properties / order / properties / total / typeAdded value: +[
+ "number",
+ "null"
+]Output schema / properties / order / properties / tracking_number / anyOfRemoved value: -[
- {
- "type": "string"
- },
- {
- "type": "null"
- }
-]Output schema / properties / order / properties / tracking_number / typeAdded value: +[
+ "string",
+ "null"
+]Output schema / properties / order / properties / tracking_url / anyOfRemoved value: -[
- {
- "type": "string"
- },
- {
- "type": "null"
- }
-]Output schema / properties / order / properties / tracking_url / typeAdded value: +[
+ "string",
+ "null"
+]Output schema / (root)Previous value: -nullNew value: +{
+ "$schema": "http://json-schema.org/draft-07/schema#",
+ "additionalProperties": false,
+ "properties": {
+ "order": {
+ "additionalProperties": false,
+ "properties": {
+ "currency": {
+ "type": "string"
+ },
+ "discount": {
+ "anyOf": [
+ {
+ "type": "number"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "express_promised_dispatch_date": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "is_express": {
+ "type": "boolean"
+ },
+ "items": {
+ "items": {
+ "additionalProperties": false,
+ "properties": {
+ "line_total": {
+ "anyOf": [
+ {
+ "type": "number"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "name": {
+ "type": "string"
+ },
+ "quantity": {
+ "type": "number"
+ },
+ "sku": {
+ "type": "string"
+ },
+ "unit_price": {
+ "anyOf": [
+ {
+ "type": "number"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ }
+ },
+ "required": [
+ "sku",
+ "name",
+ "quantity",
+ "unit_price",
+ "line_total"
+ ],
+ "type": "object"
+ },
+ "type": "array"
+ },
+ "order_date": {
+ "type": "string"
+ },
+ "order_number": {
+ "type": "string"
+ },
+ "paid_at": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "shipped_at": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "shipping_company": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "shipping_cost": {
+ "anyOf": [
+ {
+ "type": "number"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "shipping_method": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "shipping_to": {
+ "anyOf": [
+ {
+ "additionalProperties": false,
+ "properties": {
+ "city": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "country_code": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "postal_code": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ }
+ },
+ "required": [
+ "city",
+ "postal_code",
+ "country_code"
+ ],
+ "type": "object"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "status": {
+ "type": "string"
+ },
+ "subtotal": {
+ "anyOf": [
+ {
+ "type": "number"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "tax": {
+ "anyOf": [
+ {
+ "type": "number"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "total": {
+ "anyOf": [
+ {
+ "type": "number"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "tracking_number": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "tracking_url": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ }
+ },
+ "required": [
+ "order_number",
+ "status",
+ "order_date",
+ "currency",
+ "total",
+ "subtotal",
+ "shipping_cost",
+ "tax",
+ "discount",
+ "shipping_method",
+ "tracking_number",
+ "tracking_url",
+ "shipping_company",
+ "shipped_at",
+ "paid_at",
+ "items",
+ "shipping_to"
+ ],
+ "type": "object"
+ },
+ "track_url": {
+ "type": "string"
+ }
+ },
+ "required": [
+ "order",
+ "track_url"
+ ],
+ "type": "object"
+}Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=true, so the safety profile is covered. The description adds a genuinely useful behavioral fact beyond them: no authentication is required, and the postcode acts as the verification token. It doesn't mention failure modes when the postcode doesn't match, but that is a minor gap against an already-thorough annotation set.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
A single sentence that leads with the returned data and closes with the required inputs and the no-sign-in guarantee. No filler, no repetition of the title.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
An output schema exists, so the return-field listing is a helpful preview rather than a necessity, and annotations cover the read-only/open-world profile. What's slightly missing is any hint about behavior on a postcode mismatch or unknown order number, though this is arguably the output schema's job.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so both parameters are already documented ('Order number from the confirmation email', 'Delivery postcode / ZIP on the order'). The description only restates that both are needed and adds the implicit pairing constraint; with the schema doing the heavy lifting, baseline 3 applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb (track) and resource (order) and enumerates exactly what the caller gets back: status, tracking number/URL, shipping method, line items. No sibling tool covers order tracking, and the phrase 'for any order, given the order number and delivery postcode' makes the scope unmistakable.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The '(no sign-in needed)' clause establishes that this is the guest/unauthenticated path for order lookup, which is a clear usage condition. There are no sibling tools for order tracking to route against and no explicit exclusions (e.g., what to do for registered-account orders), which keeps it short of a 5.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.