Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Packaging material prices, quote checks, contract price adjustments, pack costing and supplier RFQs.
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Works in Claude on the web, desktop and mobile:
https://opnplatform.com/api/mcpRun this in your terminal
claude mcp add --transport http packindex https://opnplatform.com/api/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"packindex": {
"url": "https://opnplatform.com/api/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Paste into .vscode/mcp.json in your project
{
"servers": {
"packindex": {
"type": "http",
"url": "https://opnplatform.com/api/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
https://opnplatform.com/api/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Tool names and descriptions exactly as the server reported them on Nov 8, 2026. The maker wrote them, not us; we show them as plain text.
search_indicesFind PackIndex codes by material, input, format or plain words ('polypropylene', 'recovered paper', 'natural gas', 'kraftliner', 'corrugated box'). Returns published codes with layer (L0 inputs, L1 raw materials, L2 semi-finished, L3 finished packs), region and unit — no prices.
get_live_indexToday's value of one PackIndex code — commodity inputs (L0: oil, gas, power, metals, recovered fibre), raw materials (L1: PP, HDPE, pulp…), semi-finished (L2: kraftliner, films…) or finished packs (L3) — in USD (and your currency), with 1-week / 1-month / 3-month / 1-year change
get_index_historyPrice history for any PackIndex code (L0-L3), one value per date: every point for up to 3 months, weekly closes for longer spans, with the change between points. Depth follows the caller's plan (observer 3mo · essential 3mo · professional 24mo · intelligence 24mo); free history e
get_all_indicesPage through index values by layer: L0 primary inputs, L1 raw materials, L2 semi-finished (paid plans) and L3 finished packs. Prefer get_prices for specific codes; use this for portfolio scans. Paginate with limit/offset (next_offset is returned while more rows remain).
get_carbon_indexCarbon footprint: finished packs (L3) in kg CO2e per unit with grade A-D; raw materials and semi-finished (board grades, pulps, polymers, aluminium, steel, cullet) in kg CO2e per tonne, virgin and PEF CFF, optionally at your recycled content. For Scope 3 Category 1: factor × unit
packindex_queryAsk a plain-English question about packaging costs, indices or which PACKIQ agent to use. Returns a structured, citable answer grounded in PackIndex data.
get_index_forecast12-week forward value for any PackIndex code — inputs, raw materials, semi-finished and finished packs: current level, projection, projected change and confidence. Intelligence plan.
get_pricesToday's values for up to 20 PackIndex codes in one call (any layer: oil, gas, resins, pulp, board, films, finished packs) with 1w/1m/3m/1y change — for watchlists and cost models. Free callers get 12-week delayed reference values.
check_quoteIs this supplier price fair? Compares a quoted price (any currency; per t, kg, lb, unit…) with the PackIndex benchmark: difference %, verdict FAIR / HIGH / LOW, where the quote sits in the benchmark's 12-month range and, with a quantity, the overpayment. Free callers are compared
price_adjustmentRecalculate an index-linked contract price: base price and base date plus the indices it follows and their weights (the rest is fixed). Returns the adjusted price, each index's ratio and effect, and the formula. Essential plan (base dates up to 3 months back), Professional (24 mo
compare_regionsOne material across regions — e.g. PP in Europe, US, China and the Middle East — in USD with spreads vs a reference region; add freight per unit and duty % to compare landed costs. Professional plan and above.
explain_price_moveWhy did a price move? Splits the change over 1w / 1m / 3m / 6m / 1y into the moves of its inputs (e.g. PP ← propylene, gas, power; kraftliner ← OCC, pulp; boxes ← board grades) and the rest (margins, demand, supply). Essential plan and above.
get_market_moversBiggest risers and fallers among inputs (L0), raw materials (L1) and semi-finished (L2) over 1w / 1m / 3m / 1y, optionally within a group (e.g. 'polymer', 'fibre', 'energy'). Essential plan and above.
estimate_packaging_pricePrice a corrugated RSC box (FEFCO 0201) from internal dimensions and flute (E, B, C, F or double-wall), anchored to the PackIndex RSC benchmark, with a low/mid/high band, optional order total and a next-quarter projection. Returns the sources to cite.
draft_packaging_specTurn a plain-language packaging brief into a structured spec (format, materials, dimensions, quantity, assumptions) saved as a Design Studio project. Requires the user's OPN account (sign-in or API key); spends 1 Suite run (Intelligence includes monthly free runs).
cost_packaging_specDerive the bill of materials for a Design Studio project (or a spec object) and anchor each component to live PackIndex values. Requires the user's OPN account (sign-in or API key); spends 1 Suite run.
compare_packaging_optionsOptimise a Design Studio project (or a material): right-size, lightweight and substitute options with cost and carbon savings anchored to PackIndex. Requires the user's OPN account (sign-in or API key); spends 1 Suite run.
update_projectChange a Design Studio project's order quantity, target region, contents size (boxes — enables right-sizing), name or performance floor (corrugated: ECT; folding cartons: bending stiffness in mN·m; rigid packs: top-load kgf). Free — no Suite run; a new quantity re-prices the exis
list_my_projectsThe user's Design Studio packaging projects (id, name, pack type, status) and Suite runs left. Use it before compare_packaging_options or post_rfq when the user refers to 'my project' without an id. Requires the user's OPN account.
post_rfqRequest quotes on the OPN Trade Exchange for a Design Studio project or a PackIndex material code to up to 3 suppliers. listing_ids (from find_suppliers) or, by default, the 3 best-matching listings get an RFQ — needs a verified e-mail and an Exchange plan with RFQs (Business+).
find_suppliersWho can quote a material or a Design Studio project: live Trade Exchange listings (price vs PackIndex benchmark) plus matched converters from the verified supplier network, filtered by country. Use before post_rfq. A project_id needs the user's OPN account; a material code works
get_my_rfqsThe user's sent RFQs with how many suppliers received each and how many responded; pass rfq_id for the responses (bids and, once a supplier responds, their contact).
search_exchange_listingsLive supplier offers on the OPN Trade Exchange, filterable by PackIndex material code and origin, each with its PackIndex benchmark (live on paid plans, 12-week delayed otherwise). No contact details — RFQs happen on the Exchange.
packiq_quote_analysisBenchmark every line of a pasted supplier packaging quote against live PackIndex finished-pack indices: deviation from the benchmark and a verdict per line (Sharp, Competitive, High, Overpriced), with market evidence for lines more than 8% above index. Requires the user's OPN acc
packiq_epr_feesEstimate annual Extended Producer Responsibility fees for a packaging portfolio across active schemes (EU member states, UK, US states, Canada, Chile, Brazil): fee band per format, total liability by market and a reformulation priority list. Requires the user's OPN account; costs
packiq_recyclabilityGrade a packaging structure on the EU PPWR recyclability scale (A to F) from its substrate, layers, inks, closures and adhesives: grade, reasoning, EPR eco-modulation impact and options to reach a higher grade. Requires the user's OPN account; costs 4 PACKIQ credits (refunded aut
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 9, 2026
The registry lists no source repo, so we cannot match the publisher (opnplatform.com) to the code
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It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
The GitHub repo last changed –, and the latest version (1.1.0) reached the registry 31 days ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
In the same category: Spec Driven Development, Remote Desktop Commander, SwarmMemo
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Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
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