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Refresh listing offer observations

refresh_listing_offer_observations

Request a bounded asynchronous Listings Items observation refresh for up to 20 explicitly selected seller SKUs. This reads Amazon only; it never changes a listing or replaces the materialized baseline. Results report requested/queued or enqueue_failed state, not an observed price.

Input Schema

NameRequiredDescriptionDefault
skusYesSeller SKUs to refresh (1-20).
include_raw_rowsNoFor tabular results, false returns compact rows capped at MCP_TEXT_ROW_PREVIEW_LIMIT (default 10), regardless of limit. Complete-page and custom non-tabular responses may ignore this option; see tool-specific notes. Default true; large full-row responses are capped separately. Freshness fields require include_diagnostics=true in either row mode, where supported.
include_diagnosticsNoTrue enables expanded freshness diagnostics. Where supported, snapshot_capture_at and snapshot_data_through_date are populated only when include_diagnostics=true, in both compact and full-row modes; values may still be null if source data is unavailable. Default false. Basic empty-result data-window diagnostics are included by default when available.

Output Schema

NameRequiredDescriptionDefault
evidenceNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed29 schema fields changed
    • changedInput schema / $schema
      Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"
    • changedOutput schema / $schema
      Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"
    • changedOutput schema / additionalProperties
      Previous value: -trueNew value: +{}
    • removedOutput schema / properties / evidence / properties / effective_scope / $ref
      Removed value: -"#/properties/evidence/properties/requested_scope"
    • addedOutput schema / properties / evidence / properties / effective_scope / additionalProperties
      Added value: +false
    • addedOutput schema / properties / evidence / properties / effective_scope / properties
      Added value: +{
      +  "end_date": {
      +    "anyOf": [
      +      {
      +        "format": "date",
      +        "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$",
      +        "type": "string"
      +      },
      +      {
      +        "type": "null"
      +      }
      +    ]
      +  },
      +  "filters": {
      +    "additionalProperties": {},
      +    "propertyNames": {
      +      "type": "string"
      +    },
      +    "type": "object"
      +  },
      +  "group_by": {
      +    "items": {
      +      "maxLength": 128,
      +      "minLength": 1,
      +      "type": "string"
      +    },
      +    "type": "array"
      +  },
      +  "marketplace_id": {
      +    "anyOf": [
      +      {
      +        "minLength": 1,
      +        "type": "string"
      +      },
      +      {
      +        "type": "null"
      +      }
      +    ]
      +  },
      +  "reporting_time_zone": {
      +    "anyOf": [
      +      {
      +        "minLength": 1,
      +        "type": "string"
      +      },
      +      {
      +        "type": "null"
      +      }
      +    ]
      +  },
      +  "sort": {
      +    "items": {
      +      "additionalProperties": false,
      +      "properties": {
      +        "direction": {
      +          "enum": [
      +            "asc",
      +            "desc"
      +          ],
      +          "type": "string"
      +        },
      +        "field": {
      +          "maxLength": 128,
      +          "minLength": 1,
      +          "type": "string"
      +        }
      +      },
      +      "required": [
      +        "field",
      +        "direction"
      +      ],
      +      "type": "object"
      +    },
      +    "type": "array"
      +  },
      +  "start_date": {
      +    "anyOf": [
      +      {
      +        "format": "date",
      +        "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$",
      +        "type": "string"
      +      },
      +      {
      +        "type": "null"
      +      }
      +    ]
      +  }
      +}
    • addedOutput schema / properties / evidence / properties / effective_scope / required
      Added value: +[
      +  "marketplace_id",
      +  "start_date",
      +  "end_date",
      +  "reporting_time_zone",
      +  "group_by",
      +  "sort",
      +  "filters"
      +]
    • addedOutput schema / properties / evidence / properties / effective_scope / type
      Added value: +"object"
    • removedOutput schema / properties / evidence / properties / grain / items / $ref
      Removed value: -"#/properties/evidence/properties/tool"
    • addedOutput schema / properties / evidence / properties / grain / items / maxLength
      Added value: +128
    • addedOutput schema / properties / evidence / properties / grain / items / minLength
      Added value: +1
    • addedOutput schema / properties / evidence / properties / grain / items / type
      Added value: +"string"
    • removedOutput schema / properties / evidence / properties / join_keys / items / properties / field / $ref
      Removed value: -"#/properties/evidence/properties/tool"
    • addedOutput schema / properties / evidence / properties / join_keys / items / properties / field / maxLength
      Added value: +128
    • addedOutput schema / properties / evidence / properties / join_keys / items / properties / field / minLength
      Added value: +1
    • addedOutput schema / properties / evidence / properties / join_keys / items / properties / field / type
      Added value: +"string"
    • changedOutput schema / properties / evidence / properties / observed / properties / data_start / anyOf
      Previous value: -[
      -  {
      -    "format": "date",
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "format": "date",
      +    "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$",
      +    "type": "string"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • changedOutput schema / properties / evidence / properties / observed / properties / data_through / anyOf
      Previous value: -[
      -  {
      -    "format": "date",
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "format": "date",
      +    "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$",
      +    "type": "string"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • changedOutput schema / properties / evidence / properties / requested_scope / properties / end_date / anyOf
      Previous value: -[
      -  {
      -    "format": "date",
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "format": "date",
      +    "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$",
      +    "type": "string"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • addedOutput schema / properties / evidence / properties / requested_scope / properties / filters / propertyNames
      Added value: +{
      +  "type": "string"
      +}
    • removedOutput schema / properties / evidence / properties / requested_scope / properties / group_by / items / $ref
      Removed value: -"#/properties/evidence/properties/tool"
    • addedOutput schema / properties / evidence / properties / requested_scope / properties / group_by / items / maxLength
      Added value: +128
    • addedOutput schema / properties / evidence / properties / requested_scope / properties / group_by / items / minLength
      Added value: +1
    • addedOutput schema / properties / evidence / properties / requested_scope / properties / group_by / items / type
      Added value: +"string"
    • removedOutput schema / properties / evidence / properties / requested_scope / properties / sort / items / properties / field / $ref
      Removed value: -"#/properties/evidence/properties/tool"
    • addedOutput schema / properties / evidence / properties / requested_scope / properties / sort / items / properties / field / maxLength
      Added value: +128
    • addedOutput schema / properties / evidence / properties / requested_scope / properties / sort / items / properties / field / minLength
      Added value: +1
    • addedOutput schema / properties / evidence / properties / requested_scope / properties / sort / items / properties / field / type
      Added value: +"string"
    • changedOutput schema / properties / evidence / properties / requested_scope / properties / start_date / anyOf
      Previous value: -[
      -  {
      -    "format": "date",
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "format": "date",
      +    "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$",
      +    "type": "string"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
  2. Changed2 schema fields changed
    • changedInput schema / properties / include_diagnostics / description
      Previous value: -"True may add expanded freshness diagnostics. Basic empty-result data-window diagnostics are included by default when available."New value: +"True enables expanded freshness diagnostics. Where supported, snapshot_capture_at and snapshot_data_through_date are populated only when include_diagnostics=true, in both compact and full-row modes; values may still be null if source data is unavailable. Default false. Basic empty-result data-window diagnostics are included by default when available."
    • changedInput schema / properties / include_raw_rows / description
      Previous value: -"False returns compact rows. Default true."New value: +"For tabular results, false returns compact rows capped at MCP_TEXT_ROW_PREVIEW_LIMIT (default 10), regardless of limit. Complete-page and custom non-tabular responses may ignore this option; see tool-specific notes. Default true; large full-row responses are capped separately. Freshness fields require include_diagnostics=true in either row mode, where supported."
  3. Changed5 schema fields changed
    • changedOutput schema / properties / evidence / properties / basis / properties / date / items / enum
      Previous value: -[
      -  "order_date",
      -  "reporting_date",
      -  "click_attribution_date",
      -  "posted_date",
      -  "settlement_date",
      -  "snapshot_date",
      -  "live_observation_time",
      -  "event_time",
      -  "effective_date",
      -  "not_applicable",
      -  "not_reported"
      -]New value: +[
      +  "order_date",
      +  "reporting_date",
      +  "click_attribution_date",
      +  "posted_date",
      +  "financial_event_group_start",
      +  "settlement_date",
      +  "snapshot_date",
      +  "live_observation_time",
      +  "event_time",
      +  "effective_date",
      +  "not_applicable",
      +  "not_reported"
      +]
    • changedOutput schema / properties / evidence / properties / entity_types / items / enum
      Previous value: -[
      -  "account",
      -  "marketplace",
      -  "product",
      -  "variation_family",
      -  "listing",
      -  "offer",
      -  "inventory_item",
      -  "fulfillment_center",
      -  "order",
      -  "order_item",
      -  "campaign",
      -  "ad_group",
      -  "ad",
      -  "target",
      -  "keyword",
      -  "search_query",
      -  "portfolio",
      -  "store",
      -  "audience_segment",
      -  "dsp_advertiser",
      -  "shipment",
      -  "inbound_plan",
      -  "fulfillment_operation",
      -  "transaction",
      -  "settlement",
      -  "financial_event",
      -  "return",
      -  "reimbursement",
      -  "promotion",
      -  "review",
      -  "catalog_definition",
      -  "audit_event",
      -  "not_applicable"
      -]New value: +[
      +  "account",
      +  "marketplace",
      +  "product",
      +  "variation_family",
      +  "listing",
      +  "offer",
      +  "inventory_item",
      +  "fulfillment_center",
      +  "order",
      +  "order_item",
      +  "campaign",
      +  "ad_group",
      +  "ad",
      +  "target",
      +  "keyword",
      +  "search_query",
      +  "portfolio",
      +  "store",
      +  "audience_segment",
      +  "dsp_advertiser",
      +  "shipment",
      +  "inbound_plan",
      +  "fulfillment_operation",
      +  "transaction",
      +  "settlement",
      +  "financial_event",
      +  "financial_event_group",
      +  "return",
      +  "reimbursement",
      +  "promotion",
      +  "review",
      +  "catalog_definition",
      +  "audit_event",
      +  "not_applicable"
      +]
    • changedOutput schema / properties / evidence / properties / join_keys / items / properties / entity_type / enum
      Previous value: -[
      -  "account",
      -  "marketplace",
      -  "product",
      -  "variation_family",
      -  "listing",
      -  "offer",
      -  "inventory_item",
      -  "fulfillment_center",
      -  "order",
      -  "order_item",
      -  "campaign",
      -  "ad_group",
      -  "ad",
      -  "target",
      -  "keyword",
      -  "search_query",
      -  "portfolio",
      -  "store",
      -  "audience_segment",
      -  "dsp_advertiser",
      -  "shipment",
      -  "inbound_plan",
      -  "fulfillment_operation",
      -  "transaction",
      -  "settlement",
      -  "financial_event",
      -  "return",
      -  "reimbursement",
      -  "promotion",
      -  "review",
      -  "catalog_definition",
      -  "audit_event",
      -  "not_applicable"
      -]New value: +[
      +  "account",
      +  "marketplace",
      +  "product",
      +  "variation_family",
      +  "listing",
      +  "offer",
      +  "inventory_item",
      +  "fulfillment_center",
      +  "order",
      +  "order_item",
      +  "campaign",
      +  "ad_group",
      +  "ad",
      +  "target",
      +  "keyword",
      +  "search_query",
      +  "portfolio",
      +  "store",
      +  "audience_segment",
      +  "dsp_advertiser",
      +  "shipment",
      +  "inbound_plan",
      +  "fulfillment_operation",
      +  "transaction",
      +  "settlement",
      +  "financial_event",
      +  "financial_event_group",
      +  "return",
      +  "reimbursement",
      +  "promotion",
      +  "review",
      +  "catalog_definition",
      +  "audit_event",
      +  "not_applicable"
      +]
    • changedOutput schema / properties / evidence / properties / join_keys / items / properties / role / enum
      Previous value: -[
      -  "account_id",
      -  "marketplace_id",
      -  "asin",
      -  "advertised_asin",
      -  "purchased_asin",
      -  "child_asin",
      -  "parent_asin",
      -  "seller_sku",
      -  "fnsku",
      -  "order_id",
      -  "order_item_id",
      -  "campaign_id",
      -  "ad_group_id",
      -  "ad_id",
      -  "target_id",
      -  "keyword_id",
      -  "search_query",
      -  "portfolio_id",
      -  "shipment_id",
      -  "inbound_plan_id",
      -  "operation_id",
      -  "transaction_id",
      -  "settlement_id",
      -  "promotion_id",
      -  "not_applicable"
      -]New value: +[
      +  "account_id",
      +  "marketplace_id",
      +  "asin",
      +  "advertised_asin",
      +  "purchased_asin",
      +  "child_asin",
      +  "parent_asin",
      +  "seller_sku",
      +  "fnsku",
      +  "order_id",
      +  "order_item_id",
      +  "campaign_id",
      +  "ad_group_id",
      +  "ad_id",
      +  "target_id",
      +  "keyword_id",
      +  "search_query",
      +  "portfolio_id",
      +  "shipment_id",
      +  "inbound_plan_id",
      +  "operation_id",
      +  "transaction_id",
      +  "financial_event_group_id",
      +  "settlement_id",
      +  "promotion_id",
      +  "not_applicable"
      +]
    • changedOutput schema / properties / evidence / properties / metric_families / items / enum
      Previous value: -[
      -  "sales",
      -  "traffic",
      -  "advertising",
      -  "inventory",
      -  "returns",
      -  "reimbursements",
      -  "fees",
      -  "profitability",
      -  "catalog",
      -  "rank",
      -  "fulfillment",
      -  "pricing",
      -  "promotions",
      -  "reviews",
      -  "audit",
      -  "availability",
      -  "not_applicable"
      -]New value: +[
      +  "sales",
      +  "traffic",
      +  "advertising",
      +  "inventory",
      +  "returns",
      +  "reimbursements",
      +  "payouts",
      +  "fees",
      +  "profitability",
      +  "catalog",
      +  "rank",
      +  "fulfillment",
      +  "pricing",
      +  "promotions",
      +  "reviews",
      +  "audit",
      +  "availability",
      +  "not_applicable"
      +]
  4. Added

TDQS

A3.8/5.0
Behavior4/5

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

Annotations only say readOnlyHint=false, destructiveHint=false, openWorldHint=true; the description adds substantial context beyond that: the operation is asynchronous, bounded at 20 SKUs, does not mutate the listing or replace the materialized baseline, and returns enqueue state values. It still omits how and when the refreshed data becomes observable, and whether repeated requests are deduplicated or rate limited.

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?

Three short sentences, front-loaded with the action and scope, followed by the read-only guarantee and the return-state caveat. No filler and nothing repeated from the schema.

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?

An output schema exists so return values need not be explained, and the description covers asynchrony, bounds, and non-mutation adequately. The only remaining gap is downstream guidance on which tool surfaces the refreshed observations once queued.

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 baseline is 3. The description restates the 1-20 SKU bound but says nothing about include_raw_rows or include_diagnostics, leaving those two flags entirely to the schema text.

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 ('Request a bounded asynchronous Listings Items observation refresh') with an explicit scope cap of 20 seller SKUs. It is clearly distinguishable from the read siblings like get_listing_offers because it says the output is a queue state rather than an observed price, though it never names the sibling to read afterwards.

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?

Guidance is implied rather than stated: 'Results report requested/queued or enqueue_failed state, not an observed price' tells the agent to go elsewhere for the actual price, but no sibling is named and no condition like 'use when data is stale' is given. The 'it never changes a listing' line is a useful when-not signal.

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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