Approach and advantage
A shared SKU record anchors the comparison. Channel-specific copy can change without silently changing dimensions, materials or approved prices, making it easier to review many listings against the same product facts.
BeginnerInstruction template
Multi-Channel Listing Sync Agent
Prepare multichannel product listings from one consistent set of SKU facts. This Skill compares your catalog with channel exports, adapts titles and attributes to each marketplace and flags conflicting details, giving ecommerce teams a reviewable update list before they publish through their existing channel tools.
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What this Skill does
Multi-Channel Listing Sync separates shared product facts from channel-specific presentation. You supply the canonical catalog, current listings and marketplace requirements; the Skill identifies what should remain identical and what needs a different title, attribute mapping or layout.
It produces listing drafts and a discrepancy review, useful when adding a sales channel or receiving new supplier specifications. Automatic synchronization, inventory updates and marketplace publication require separate integrations.
What makes it different
What you can use it for
Use the discrepancy list to plan an update rather than replacing every field indiscriminately. It can help identify missing attributes, conflicting supplier details and channel rules that need confirmation before upload.
Before you use it
Inputs to prepare
Canonical SKU data, current channel exports, approved prices, images, and current marketplace requirements.
Agent and runtime
A model chat is enough to draft from these instructions. Real system access or file changes need separately configured tools.
Scope to confirm
No synchronization engine or marketplace connector is included. The 10% price-variance flag is a configurable template rule.
Install and get started
Use these instructions in a chat, or ask Codex / Claude Code to save them as a personal Skill for repeated tasks.
- Open Codex or Claude Code with local file and terminal access.
- Copy the request below into the app you are using. The assistant will select that app’s installation directory.
- Check the returned path and file checks. Start a new session if needed, then ask the assistant to use the installed Skill.
Set up a personal reusable instruction template for Multi-Channel Listing Sync Agent in the app I am using.
1. Read the “Collected instruction template” section at https://ecomagenttools.com/skills/multi-channel-listing-sync. Use only that complete instruction text, not the page’s reviews, FAQ or installation explanation. If you cannot retrieve the complete text, ask me to paste it; do not guess it or download a same-named third-party package.
2. Show which assumptions, placeholders and access requirements I need to supply. Preserve the collected task instructions. This is a locally adapted template, not an original-author package.
3. If you are Codex or Claude Code with local file access, create a personal Skill named multi-channel-listing-sync-local under ~/.agents/skills/multi-channel-listing-sync-local/SKILL.md for Codex or ~/.claude/skills/multi-channel-listing-sync-local/SKILL.md for Claude Code. Add valid name and description frontmatter if absent; keep the collected instructions in the body and identify the local adaptation. Do not overwrite an existing Skill. If you are in a chat-only app, use these instructions in the current conversation instead and do not claim a local installation.
4. Return the saved path or current-chat setup result and a starter request for this task. List any required tools or data that remain unconfigured. Do not claim account/API access or a completed business workflow just because the template was saved.Collected instruction template
Network-collected; no confirmed author source. The collected text was reviewed, but it has not been linked to a verified original publication. This does not establish that no official package exists; the examples here use only the collected text.
You are a multi-channel ecommerce listing manager. Your role is to:
1. CHANNEL MAPPING:
Maintain a product catalog with channel-specific data:
- Shopify: full HTML descriptions, metafields, SEO data
- Amazon: keyword-optimized titles, 5 bullets, backend terms
- eBay: item specifics, condition notes, shipping templates
- Etsy: tags, attributes, materials, handmade details
- Walmart: rich media, tax codes, shipping weight
2. CONSISTENCY RULES:
- Core product data (SKU, weight, dimensions) must match everywhere
- Pricing may differ by channel (map MSRP, MAP policies)
- Description adapts to channel format but keeps key USPs
- Images meet each channel's requirements
3. CONFLICT DETECTION:
Flag when the same SKU has conflicting data across channels:
- Price variance > 10%
- Different weight/dimensions
- Missing required fields for specific channel
- Category mismatch
4. BULK OPERATIONS:
- "Take this Shopify product and generate Amazon + eBay + Etsy listings"
- "Update all channels when supplier changes specs"
- "Apply holiday pricing rules across all channels"
Output channel-specific formats when requested.Get started
Starter prompts for the main use cases—copy and use them directly.
01Adapt one SKU across channels
Prepare channel-specific fields while preserving SKU, weight, dimensions, and supported claims. Use for: Adapt one SKU across channels. Prepare: Canonical SKU data, current channel exports, approved prices, images, and current marketplace requirements.
Show prompt and variablesHide prompt and variables
Adapt one SKU across channels
Prepare channel-specific fields while preserving SKU, weight, dimensions, and supported claims. Use for: Adapt one SKU across channels. Prepare: Canonical SKU data, current channel exports, approved prices, images, and current marketplace requirements.
Use the collected instructions above. Task: Prepare channel-specific fields while preserving SKU, weight, dimensions, and supported claims.. Inputs: [INPUT]. Constraints: [CONSTRAINTS]. Check missing information first. Produce a reviewable result with evidence, assumptions, and next steps. No synchronization engine or marketplace connector is included. The 10% price-variance flag is a configurable template rule.Replace these variables
[INPUT]- Canonical SKU data, current channel exports, approved prices, images, and current marketplace requirements.
[CONSTRAINTS]- Scope, allowed actions, output format, and review requirements.
02Find catalog conflicts
Compare channel exports and list mismatched dimensions, missing attributes, and price differences. Use for: Find catalog conflicts. Prepare: Canonical SKU data, current channel exports, approved prices, images, and current marketplace requirements.
Show prompt and variablesHide prompt and variables
Find catalog conflicts
Compare channel exports and list mismatched dimensions, missing attributes, and price differences. Use for: Find catalog conflicts. Prepare: Canonical SKU data, current channel exports, approved prices, images, and current marketplace requirements.
Use the collected instructions above. Task: Compare channel exports and list mismatched dimensions, missing attributes, and price differences.. Inputs: [INPUT]. Constraints: [CONSTRAINTS]. Check missing information first. Produce a reviewable result with evidence, assumptions, and next steps. No synchronization engine or marketplace connector is included. The 10% price-variance flag is a configurable template rule.Replace these variables
[INPUT]- Canonical SKU data, current channel exports, approved prices, images, and current marketplace requirements.
[CONSTRAINTS]- Scope, allowed actions, output format, and review requirements.
03Plan a supplier-spec update
Show the old and new fields affected by a supplier change and prepare a reviewable update table. Use for: Plan a supplier-spec update. Prepare: Canonical SKU data, current channel exports, approved prices, images, and current marketplace requirements.
Show prompt and variablesHide prompt and variables
Plan a supplier-spec update
Show the old and new fields affected by a supplier change and prepare a reviewable update table. Use for: Plan a supplier-spec update. Prepare: Canonical SKU data, current channel exports, approved prices, images, and current marketplace requirements.
Use the collected instructions above. Task: Show the old and new fields affected by a supplier change and prepare a reviewable update table.. Inputs: [INPUT]. Constraints: [CONSTRAINTS]. Check missing information first. Produce a reviewable result with evidence, assumptions, and next steps. No synchronization engine or marketplace connector is included. The 10% price-variance flag is a configurable template rule.Replace these variables
[INPUT]- Canonical SKU data, current channel exports, approved prices, images, and current marketplace requirements.
[CONSTRAINTS]- Scope, allowed actions, output format, and review requirements.
Worked example: Generate five channel drafts from one product master
HM-BLUE-001 needs Shopify, Amazon, eBay, Etsy and Walmart drafts with consistent capacity, pricing, care and shipping information.
Steps and prompt
- Prepare the attached business materials, preserving amounts, units, dates and metric definitions.
- We need consistent product listings for Shopify, Amazon and eBay from one approved product record. Prepare each channel's title, bullets, description, attributes, category suggestion and image-alt copy. Preserve capacity, dimensions, care and shipping restrictions; supply a comparison table and a clear list of fields still needed before publishing.
- Submit the exact prompt below. Read the primary deliverable on the right and download all deliverables for the team handoff.
Case input files: business-inputs.zip
Use the multi-channel-listing-sync Skill.
We need consistent product listings for Shopify, Amazon and eBay from one approved product record. Prepare each channel's title, bullets, description, attributes, category suggestion and image-alt copy. Preserve capacity, dimensions, care and shipping restrictions; supply a comparison table and a clear list of fields still needed before publishing.
The attached business materials are:
- inputs/brief.json
Deliver a complete result.md report that the operations team can read, plus any finished files needed for this task. Keep supporting calculations and evidence with the deliverables. Write the report in English; use the requested target language for customer-facing copy. The business datasets are fictional examples unless the brief explicitly names a live public website.What the run produced
The primary file produced by this prompt is shown below in its original language.
HarborMug multi-channel listing package
Keep all three offers at $24 USD, using one approved record for SKU HM-BLUE-001. The listing drafts below are ready for operations review; hold publication until the missing fields are resolved. No listings or account settings were changed.
The supplied product data is synthetic. Customer-facing drafts use English because no other target language was specified.
Approved facts and channel comparison
| Field | Shopify | Amazon | eBay |
|---|---|---|---|
| SKU | HM-BLUE-001 | HM-BLUE-001 | HM-BLUE-001 |
| Offer price / MSRP | $24 / $24 USD | $24 / $24 USD | $24 / $24 USD |
| Capacity | 500 ml | 500 ml | 500 ml |
| Material / color | Stainless steel / Blue | Stainless steel / Blue | Stainless steel / Blue |
| Product weight | 0.35 kg | 0.35 kg | 0.35 kg |
| Dimensions | 9 × 9 × 19 cm | 9 × 9 × 19 cm | 9 × 9 × 19 cm |
| Care | Hand-wash only; not microwave safe | Same | Same |
| Condition | New | New offer | New |
| Category suggestion | Home & Garden > Kitchen & Dining > Tableware > Drinkware > Mugs | Home & Kitchen > Drinkware > Mugs | Home & Garden > Kitchen, Dining & Bar > Dinnerware & Serveware > Mugs |
| Shipping | Domestic only; dispatch in 2 business days; delivery 3–5 business days | Same, through offer settings | Same, through shipping policy |
| Shipping charge | $5 below $50; free at $50 or more | Same intended schedule | Same intended schedule |
| Images | Missing | Missing | Missing |
Dimension axes are unspecified; retain the supplied sequence and confirm axes before mapping dimension-specific fields. The 0.35 kg figure is product weight, not a confirmed packaged shipping weight. Category paths are suggestions, not validated taxonomy IDs. No existing channel exports were provided, so the comparison covers the prepared drafts rather than live listing conflicts.
Price variance across drafts is 0%, below the Skill's >10% conflict trigger. No core-data conflicts occur in the generated drafts. MAP policy is unspecified; do not treat a null value as confirmation that no restrictions apply. Shipping examples: a $24 order costs $5 to ship; $48 costs $5; $50 and $72 qualify for free shipping under the supplied threshold rule. Tax treatment and threshold basis still need confirmation.
Shopify draft
Title: HarborMug Blue Insulated Stainless Steel Mug, 500 ml
Highlights:
- 500 ml capacity: A stainless steel mug for your drinkware collection.
- Insulated design: An insulated stainless steel mug with a 500 ml capacity.
- Blue finish: Blue stainless steel drinkware from HarborMug.
- Dimensions and weight: 9 × 9 × 19 cm; product weight 0.35 kg.
- Care: Hand-wash only; not microwave safe.
Description: The HarborMug Blue Insulated Stainless Steel Mug has a 500 ml capacity and a blue finish. Dimensions: 9 × 9 × 19 cm. Product weight: 0.35 kg. Hand-wash only; not microwave safe.
The finished HTML description is in shopify-description.html, including the description and five highlights.
Customer policy copy — hold until delivery timing is clarified: Domestic shipping only. Dispatch within 2 business days. Delivery: 3–5 business days. Shipping is $5 on orders below $50 and free on orders of $50 or more. Unused returns within 30 days; final refund requires merchant approval.
Attributes: Brand HarborMug; SKU HM-BLUE-001; capacity 500 ml; material stainless steel; color blue; condition new; product weight 0.35 kg; dimensions 9 × 9 × 19 cm; care hand-wash only, not microwave safe. Product type: Mugs. Proposed metafields: custom.capacity_ml = 500; custom.product_weight_kg = 0.35; custom.dimensions_cm = [9, 9, 19]; custom.care = “Hand-wash only; not microwave safe”. Define compatible field types before import.
SEO title: HarborMug Blue Insulated Stainless Steel Mug | 500 ml
SEO description: Shop the HarborMug blue insulated stainless steel mug with 500 ml capacity. Measures 9 × 9 × 19 cm. Hand-wash only; not microwave safe.
Suggested handle: harbormug-blue-insulated-stainless-steel-mug-500ml
Amazon draft
Title: HarborMug Blue Insulated Stainless Steel Mug, 500 ml
Five bullets:
- 500 ml capacity: A stainless steel mug for your drinkware collection.
- Insulated design: An insulated stainless steel mug with a 500 ml capacity.
- Blue finish: Blue stainless steel drinkware from HarborMug.
- Dimensions and weight: 9 × 9 × 19 cm; product weight 0.35 kg.
- Care: Hand-wash only; not microwave safe.
Description: The HarborMug Blue Insulated Stainless Steel Mug has a 500 ml capacity and a blue finish. Dimensions: 9 × 9 × 19 cm. Product weight: 0.35 kg. Hand-wash only; not microwave safe.
Attributes: Brand HarborMug; seller SKU HM-BLUE-001; capacity 500 ml; material stainless steel; color blue; product weight 0.35 kg; dimensions 9 × 9 × 19 cm; care hand-wash only, not microwave safe. Offer condition: New. Product type and browse node: pending category selection. Do not infer an MPN or GTIN from the seller SKU.
Backend search terms: drinkware
The backend draft avoids repeating title terms or adding unsupported claims. Set offer price to $24 USD. Keep the domestic restriction, dispatch period, delivery window, shipping charges and returns in the appropriate offer and fulfillment settings. Do not insert seller shipping or return terms into the shared product description. Confirm the fulfillment method and applicable marketplace returns rules before using the merchant-approval wording.
eBay draft
Title: HarborMug Blue Insulated Stainless Steel Mug, 500 ml
Description: The HarborMug Blue Insulated Stainless Steel Mug has a 500 ml capacity and a blue finish. Dimensions: 9 × 9 × 19 cm. Product weight: 0.35 kg. Hand-wash only; not microwave safe.
Description highlights:
- 500 ml capacity: A stainless steel mug for your drinkware collection.
- Insulated design: An insulated stainless steel mug with a 500 ml capacity.
- Blue finish: Blue stainless steel drinkware from HarborMug.
- Dimensions and weight: 9 × 9 × 19 cm; product weight 0.35 kg.
- Care: Hand-wash only; not microwave safe.
Item specifics: Brand: HarborMug; Type: Mug; Material: Stainless steel; Color: Blue; Capacity: 500 ml. Additional approved attributes: product weight 0.35 kg; dimensions 9 × 9 × 19 cm; care hand-wash only, not microwave safe. Seller SKU: HM-BLUE-001. MPN and UPC: not supplied; do not fill with the SKU or “Does not apply” without eligibility confirmation.
Condition: New. Condition note: New.
Shipping template draft: Domestic destinations only; country and excluded regions pending. Handling: 2 business days. Delivery window: 3–5 business days, with timing basis pending. Charge $5 below a $50 order threshold and $0 at or above $50. Select a service that supports the confirmed promise; verify combined-order eligibility and threshold behavior before assigning the policy. Confirm international programs cannot override domestic-only restrictions.
Returns draft: Unused returns within 30 days; final refund requires merchant approval. Confirm the structured return settings, return shipping payer and applicable marketplace obligations before assigning the policy. Do not promise discretionary refusal where platform rules require a refund.
Image-alt copy for all channels
Shopify: “HarborMug blue insulated stainless steel mug, 500 ml”
Amazon: “HarborMug blue insulated stainless steel mug, 500 ml”
eBay: “HarborMug blue insulated stainless steel mug, 500 ml”
These are proposed descriptions for a matching product image. No images were supplied, so no alt text has been matched to an actual view. Use the channel's supported image-text field where available; otherwise retain the copy in the asset record. Additional views need view-specific alt text after inspection. Do not claim a lid, handle, packaging, dimensions shown in an image, or accessories without image evidence.
Fields still needed before publishing
| Applies to | Missing field or decision | Publication impact |
|---|---|---|
| All channels | Approved product images, primary image selection, usage rights and channel-specific asset checks | Cannot assess the images or attach final alt copy |
| All channels | Domestic country, ship-from location, permitted regions and exclusions; target marketplace | “Domestic only” cannot be configured without a territory |
| All channels | Whether 3–5 business days means transit after dispatch or total delivery after order | Prevents an accurate delivery promise; do not silently convert it to 5–7 days |
| All channels | Carrier/service, fulfillment method, packaged weight and package dimensions | Product measurements cannot substitute for parcel measurements |
| All channels | Dimension-axis labels | Blocks accurate length/width/height mapping |
| All channels | Sellable inventory quantity and availability | Needed to activate a truthful offer |
| All channels | Shipping threshold basis, treatment of discounts/tax, multi-item eligibility and platform support | Needed to reproduce the $5/free schedule; no alternative charge is approved |
| All channels | Return-window start event, return process/address, return shipping payer, marketplace compatibility of approval requirement | Needed for clear, enforceable return settings |
| All channels | Confirmation of MAP status and intended USD marketplace/currency | Avoid an unsupported pricing-policy assumption |
| Shopify | Final taxonomy selection, metafield definitions/types, inventory tracking/location and applicable tax settings | JSON is a structured handoff, not an import-ready Shopify CSV |
| Amazon | Existing ASIN match or GTIN and identifier type, or approved exemption; manufacturer/MPN if required; product type, browse node and category-required fields | Required fields depend on selected marketplace and category |
| eBay | Category ID, applicable condition ID, required item specifics, identifier/MPN applicability, shipping and returns policy assignments | Must be validated in the selected market and category |
No supported retention duration, double-wall construction, leakproof claim, dishwasher safety, lid, handle, steel grade, country of origin or accessory information is supplied. Omit these claims; collect evidence only if the listing needs them. Etsy design details and Walmart tax codes are outside this three-channel scope.
Handoff and evidence
channel-listings.json contains the complete structured channel drafts, proposed categories, image-alt copy and separated policy settings. Nulls mark unresolved values; it is a review file, not a validated marketplace API payload. channel-comparison.csv provides the portable comparison. verification.json records calculated price variance, title counts, bullet count, shipping examples and core-field agreement. source-notes.md records source boundaries and official channel guidance.
The source record is the only basis for product claims. Checks confirm consistency of the generated files; they do not establish live account eligibility or category acceptance. Publish only after resolving the applicable missing fields and reviewing the rendered listing in each channel.
Merchant business data is synthetic. Website observations, when present, come from the public URLs listed in the report.
Risks and operating notes
Known limits
No synchronization engine or marketplace connector is included. The 10% price-variance flag is a configurable template rule.
Evidence and review
Network-collected; no confirmed author source. The collected text was reviewed, but it has not been linked to a verified original publication. This does not establish that no official package exists; the examples here use only the collected text.
Before acting on the result
Use authorized inputs and keep secrets out of prompts. Review customer-facing claims, calculations, code changes, and any proposed external action before applying them.
Frequently asked questions
What does it do, and what is the advantage?
Map supplied product data to channel-specific listing drafts and flag inconsistencies. Shared SKU facts remain separate from channel-specific titles, attributes, and formatting.
How do I install it and start?
Copy the collected instructions below into a model chat or project instructions. Replace assumed access, default policies, sample numbers, and placeholders with your actual context. Attach a small redacted sample, use a starter prompt, and review the draft before acting.
Which situations is it useful for?
Adapt one SKU across channels; Find catalog conflicts; Plan a supplier-spec update
What limitations should I know?
No synchronization engine or marketplace connector is included. The 10% price-variance flag is a configurable template rule.
What was checked for this page?
Network-collected; no confirmed author source. The collected text was reviewed, but it has not been linked to a verified original publication. This does not establish that no official package exists; the examples here use only the collected text.
Network-collected; original author unavailable.
The complete available Skill content is cataloged and reviewed; public web material does not currently name the original author. Attribution does not affect its directory visibility or content-based recommendation eligibility.
Network-collected; no author source is listed. This label describes attribution only, not capability, visibility, or recommendation eligibility.
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