# Child Bar 3\.0 \| live price, prepared checkout ## Built for shopping agents: what RoboTrunk does for every product We asked shopping agents, including Meta's Muse first-hand, what they need from a store. This is what they asked for, and what we have built. RoboTrunk is working through its catalogue, so a step may not be done for this one yet. Where a step is done per product, the line ends with what is done for this product. - **Deep research:** We read the maker's manual, independent reviews, video review transcripts and the store's own page, and publish each finding with its source and the date read. `check_product` returns them with a source for each. *This product:* 13 checked facts, research depth trimmed read, checked 2026-10-12T15:09:17.432Z, in the [evidence pack](/agent/evidence/hellomockingbird-com--child-bar-3-0). - **Receipts:** Every published fact has a receipt showing its source quote. `check_product` and `get_product` return the checked facts that have one. *This product:* each checked fact listed below has one; the source quotes are in the [evidence pack](/agent/evidence/hellomockingbird-com--child-bar-3-0). - **Safety:** `check_product` asks the product-safety regulators live (US CPSC, NHTSA and FDA, Health Canada, the UK's OPSS, Australia's ACCC) whether a recall names a product, listed here or not, and flags a match with its notice; a recall never blocks the buyer. *This product:* this page holds no recall result for it yet; `check_product` asks the regulators now. - **Recall watch:** `watch_recalls` tells the buyer if a product bought here is recalled later. - **Second-hand listings:** `check_listing` runs the same recall check on a second-hand listing someone found, and adds what the listing leaves out and the price new. - **The real price:** The full price to the buyer's country, with shipping and tax, each part quoted from the store's policy or, where a part is not settled, what the total depends on: `check_product` and `search_catalog` take the buyer's country and postcode. *This product:* this store's price was read from its catalogue at 2026-10-18T19:33:40.395Z. - **A checkout that finishes:** RoboTrunk lists only stores whose agent checkout it has verified. `create_checkout` prepares the order at the store; `complete_checkout` returns a link to the store's own checkout. The checkout can be finished in either of two ways: the person taps the link in their own browser, or their agent opens it and completes the checkout. RoboTrunk checks the store's total against a budget ceiling before it issues the link. Payment always happens on the store's own page, and RoboTrunk never holds the money. No store pays for placement; RoboTrunk may earn a commission from some stores via their affiliate programs. - **Markdown copy:** Every page has a Markdown copy: [this page's copy](https://robotrunk.com/products/ucp/hellomockingbird-com/15228588523686.md). - **Photos and ratings:** Search results carry the product photo and, where the store's own page publishes one, its rating (`search_catalog`). - **Fit answers:** `check_fit` answers whether a listing fits a car, pram or bottle, with the exact quote from the store's page, or says it is not known. - **Back-in-stock watches:** `watch_back_in_stock` starts a watch on a listing the store shows as sold out; `get_back_in_stock_watch` shows when it is back in stock. - **Maker's manual:** `ask_product_manual` answers from the maker's manual with the exact passage and page, or says the manual does not cover it. - **Tools and guide:** Every tool and its description is at https://robotrunk.com/mcp; the guide is at [/agents\.md](/agents.md). - **Research from other stores:** Coming soon: reading other stores' listings of the same product as research sources. Sold and shipped by hellomockingbird\.com, hellomockingbird.com; payment happens on the store's own checkout. Brand: Mockingbird ## Variants - Penny: USD 20.00; in stock. Variant id: `gid://shopify/ProductVariant/56166192840870` - Seller: hellomockingbird\.com. Price: USD 20\.00. Stock: in stock. Variant: Penny, variant id `gid://shopify/ProductVariant/56166192840870`. shipping not recorded; confirmed at merchant checkout. returns not recorded; confirmed at merchant checkout. [Public evidence](https://mockingbird-prod.myshopify.com/products/child-bar-3-0). [Comparison page](/compare/want/mockingbird-child-bar-options-by-stroller-model). [Get ready to buy from hellomockingbird\.com: prepare checkout](/checkout-prepare?merchant=hellomockingbird-com&product_id=gid%3A%2F%2Fshopify%2FProduct%2F15228588523686&variant_id=gid%3A%2F%2Fshopify%2FProductVariant%2F56166192840870). - Black: USD 20.00; in stock. Variant id: `gid://shopify/ProductVariant/56166192873638` - Seller: hellomockingbird\.com. Price: USD 20\.00. Stock: in stock. Variant: Black, variant id `gid://shopify/ProductVariant/56166192873638`. shipping not recorded; confirmed at merchant checkout. returns not recorded; confirmed at merchant checkout. [Public evidence](https://mockingbird-prod.myshopify.com/products/child-bar-3-0). [Comparison page](/compare/want/mockingbird-child-bar-options-by-stroller-model). [Get ready to buy from hellomockingbird\.com: prepare checkout](/checkout-prepare?merchant=hellomockingbird-com&product_id=gid%3A%2F%2Fshopify%2FProduct%2F15228588523686&variant_id=gid%3A%2F%2Fshopify%2FProductVariant%2F56166192873638). ## Checked facts Each fact below was checked against the source it cites before it was published. Each carries that source's link and the time RoboTrunk read it. 13 checked facts, checked 2026-10-12T15:09:17.432Z. Research depth: trimmed read. Deep read: the store's own data and 6 outside pages \(the store's own product page; maker page; manual; regulator recall search \(CPSC \(United States\)\); regulator recall search \(Health Canada\)\), each read in full by RoboTrunk and trimmed to its main content, then written up and checked\. Facts from the maker or a manual quote the page word for word; what real users report is summarised with a link to the page read\. Recall status was checked directly with CPSC \(United States\), Health Canada: CPSC recall search for Mockingbird returned no recall records\. Health Canada recall records mentioning Mockingbird: none\. No recall applies to the Child Bar 3\.0\. - brand: The listing names Mockingbird as the vendor\.. Source: (listing), read 2026-10-11T07:21:21.154Z. - what it is: It is a replacement Child Bar for the one included with Mockingbird Strollers and 2nd Seat Kits\.. Source: (guide), read 2026-10-12T14:52:50.230Z. - warranty: Mockingbird says to contact Product Specialists if an issue may be covered under warranty\.. Source: (guide), read 2026-10-12T14:53:04.843Z. - material: The Child Bar uses updated dimpled leatherette\.. Source: (guide), read 2026-10-12T14:53:37.974Z. - recall: CPSC recall search returned no records for Mockingbird\.. Source: (guide), read 2026-10-12T14:53:39.164Z. - recall: Health Canada recall records mentioning Mockingbird were none\.. Source: (guide), read 2026-10-12T14:53:39.566Z. - category: The store feed lists it as a replacement part\.. Source: (listing), read 2026-10-11T07:21:21.154Z. - model name: The product is named Child Bar 3\.0\.. Source: (guide), read 2026-10-12T14:52:50.230Z. - what's included: The replacement includes a Child Bar, either as a replacement for the included bar or as an upgrade to the dimpled leatherette on 3\.0 models\.. Source: (guide), read 2026-10-12T14:52:50.230Z. - compatibility: The Child Bar is compatible with all models of the Single\-to\-Double Stroller and 2nd Seat Kit, and with 2\.0 and 3\.0 versions of the Single Stroller\.. Source: (guide), read 2026-10-12T14:52:50.230Z. - compatibility older models: For a Single Stroller model from 2023 or earlier, buyers should contact Mockingbird Product Specialists\.. Source: (guide), read 2026-10-12T14:52:50.230Z. - returns: Replacement parts like this item are not eligible for returns or exchanges\.. Source: (guide), read 2026-10-12T14:52:50.230Z. - weight: Structured product data lists the weight value as 0 lb\.. Source: (guide), read 2026-10-12T14:52:50.230Z. The full evidence pack, with every citation, source and gap: [evidence pack](/agent/evidence/hellomockingbird-com--child-bar-3-0) ## Questions we researched but could not confirm Every fact above is cited. To find them we read the store listing, the maker's page, the manual and the recall records of CPSC \(United States\) and Health Canada and searched for regulator recall notices, owner reviews, blogs, owner forums and video reviews. We also chased the questions below across those sources and found no reliable answer, so you know exactly where the evidence ends and never have to guess. - How does the Child Bar 3\.0 attach to the stroller? - What tools are needed to install the Child Bar 3\.0? - What are the dimensions of the Child Bar 3\.0? - What is the actual weight of the Child Bar 3\.0? - Does the dimpled leatherette peel or rub off over time? - How should I clean the Child Bar 3\.0? - Will it fit a 2024 Mockingbird Single Stroller? - Will it fit a Mockingbird Single Stroller from 2023 or earlier? - Is the Child Bar 3\.0 compatible with the Riding Board? - What safety standards or certifications does the Child Bar 3\.0 meet? - Are there age, height, or weight limits for using the Child Bar 3\.0? - Does the Child Bar 3\.0 come with mounting hardware? - What is the warranty period for the Child Bar 3\.0? - Can the Child Bar 3\.0 be used with the Mockingbird Bassinet? - Is the Child Bar 3\.0 compatible with the Mockingbird Travel Stroller? To buy this through RoboTrunk, pass merchant `hellomockingbird-com`, product_id `gid://shopify/Product/15228588523686` and one variant_id from the list above. Product image of Child Bar 3\.0, supplied by hellomockingbird\.com: This product on hellomockingbird.com: Retrieved 2026-10-18T19:33:40.395Z from This page is published by RoboTrunk, a store built for shopping agents. The store named on this page sells the product and ships it. RoboTrunk is not the seller and never holds the money. Buying works in one path. RoboTrunk's tools prepare a checkout at that store, then hand back a short-lived link. The person approves the total; once RoboTrunk has checked the store's total against it, the person is given the checkout link to tap in their own browser, or, if the person prefers and gives permission, their agent may open the link and finish there, and payment always happens on the store's own checkout page. RoboTrunk never takes the payment or sees a card. Where the rest of this site is: - /agent/story.md is what RoboTrunk is and how it works, in full. - /agent/tools.json is every tool, its arguments and its answers. - /agent/merchants is every store you can buy from through RoboTrunk. - /products/ucp is every store's indexed products. - /products/search is one search across every store, in plain words. - [What RoboTrunk is](/agent/story.md) - [The tools and how to call them](/agent/tools.json) - [The stores you can buy from](/agent/merchants) - [Every store's products](/products/ucp) - [Search every store at once](/products/search)