Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Agent-to-Agent (A2A) hub for cosmetics: skin care, fragrance, sun care, dermocosmetics.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
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Works in Claude on the web, desktop and mobile:
https://mcp.a2a-cosmetics.ai/mcpRun this in your terminal
claude mcp add --transport http a2a-cosmetics https://mcp.a2a-cosmetics.ai/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"a2a-cosmetics": {
"url": "https://mcp.a2a-cosmetics.ai/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": {
"a2a-cosmetics": {
"type": "http",
"url": "https://mcp.a2a-cosmetics.ai/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://mcp.a2a-cosmetics.ai/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 6, 2026. The maker wrote them, not us; we show them as plain text.
resolve_jurisdictionWhere is this going? Resolve a ship-to (e.g. 'US', 'US-CA', 'UK', 'FR', 'EU-DE', 'JP') to one of the 18 markets and its rule set (13 rule sets; the six EU markets share one). UK is the label; machine fields carry the ISO code GB.
resolve_actorWho is asking? Brand, manufacturer, retailer or distributor (business to business); auditor (read-only); agent (inherits the class of the credential it presents — none returns DENY_UNLICENSED_AGENT). The consumer is never the counterparty. Returns communication_class: trade_infor
gate_transactionAllow or deny, with the reason and the rule. Takes a product (GTIN or catalogue id; optional), the ship-to market, the actor class and, when no record exists yet, the product type, ingredients (INCI) and claims. Returns one of twelve reason codes (ALLOW · REQUIRE_NOTIFICATION · R
get_ingredient_recordOne ingredient, and its status in every market: the standard ingredient name (INCI), aliases, and per rule set whether it is prohibited, restricted (with the limit or condition) or listed, each with the official list and its source page.
get_market_statusIs this product type a cosmetic here? Product type by market: cosmetic, drug, special class (functional cosmetic, quasi-drug, grade 2, therapeutic good) or not permitted — with the rule-set version and the regulator's page.
get_notification_requirementsWhat must be filed before sale in a market: the notification scheme, the responsible-person requirement and, for a product type in a special class, the extra step (review, registration, listing) — each with its source page.
get_label_and_claimsWhat the label must say, and which claims are allowed: the label requirements of the market and the claims rules of record (patterns that take a product out of the cosmetic class), each with its source page. Optional claims are checked against the rules.
get_enforcement_watchRecalls, bans and safety alerts, dated: enforcement events by market, ingredient, brand or since a date, each with its source page.
search_cleared_itemsFind products cleared for this market: validated product records in a market (query by product name, brand, product type or lane; optional lane filter: suncare · fragrance · dermocosmetics · peptides · korean · sustainable). Only validated rows are served; each item carries its c
get_itemProduct record from gtinfetch.ai (signed); hub layer: seat, market, claim, price, availability. One product by GTIN, fully resolved: taxonomy path, variant or form, brand, market, claim status, market status, availability; after the gate also ingredients, claims, attributes, shad
compare_itemsCompare products, variants and shades side by side (two to eight GTINs or catalogue ids).
find_verified_supplierVerified makers and brands for this product or product type in a market: supplier records (brand · manufacturer) with their claim status — verified first, then claimed, then listed. Takes the decision_id of an allow decision.
get_availabilityIn stock, and where: the availability block of a product (banners on the shelf of record, product URLs read live at load, store counts where the retailer record carries one) once gate_transaction has answered allow (decision_id).
get_priceThe price for this buyer: the price basis (list · contract) from the supplier's offers on the record, once gate_transaction has answered allow (decision_id). Tiers buy services, never rank.
get_product_documentsSafety report, certificate of analysis, data sheet: the documents on a product record (product information file pointer, safety assessment, certificate of analysis, safety data sheet), each a URL with its read date; decision_id required.
verify_gtinProduct record from gtinfetch.ai (signed); hub layer: seat, market, claim, price, availability. Is this GTIN real, and whose is it? Check-digit validation, the GS1 prefix, and the validated record(s) that carry it on this hub with their brand and claim status.
create_order_intentOpen an order between two agents: an order intent for a cleared product after the gate; the intent carries reason_code + rule_set_version and settles by x402 on a2a-x402.ai.
a2a_handoffHand the buyer to the right agent over Agent-to-Agent (A2A): with an allow decision the order intent goes to the counterparty's agent (envelope + card URL); with a deny, the market agent of the ship-to (the regulator's home page beside it) — a referral, never a sale to a consumer
claim_seatA brand's agent claims its seat on A2A Cosmetics. Give the agent's card URL and the GTINs the brand claims: every GTIN must resolve on gtinfetch.ai to the maker the card names, and the category comes first (beauty and personal care proceed; a grocery record is referred to a2a-gro
search_catalogUniversal Commerce Protocol (UCP) catalogue search, version 2026-08-25 (dev.ucp.shopping.catalog.search). arguments: meta {'ucp-agent': {profile}} (required) and catalog {query, context {address_country}, filters {categories, price {min, max} in minor units}, pagination {limit, c
lookup_catalogUniversal Commerce Protocol (UCP) catalogue lookup, version 2026-08-25 (dev.ucp.shopping.catalog.lookup). arguments: meta {'ucp-agent': {profile}} (required) and catalog {ids: product ids (GTIN) or variant ids ( : ), up to 50; context; filters}. Found rows come back as products w
get_productUniversal Commerce Protocol (UCP) product detail, version 2026-08-25 (dev.ucp.shopping.catalog.lookup). arguments: meta {'ucp-agent': {profile}} (required) and catalog {id: a GTIN or a variant id : ; context; filters}. One product of the priced subset with its variants per market
get_safety_labelWarnings and age limits: the warning statements the market requires for a product type (sunscreen, hair dye, aerosols, children's products) and the safety-alert scheme of the regulator, each with its source page.
log_auditWrite a line to the audit record for a gate decision, an order intent or a handoff (returns the line id).
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 7, 2026
The registry name was verified with the GitHub account greencore-solutions, which owns the repo
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Responded in 714 ms (HTTP 200)
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Read 24 tool descriptions and found no hidden instructions to the AI
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
The registry does not list a required key, though some servers ask you to sign in on first use.
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 (1.0.3) reached the registry 2 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, Master CSS
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
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Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for cosmetics.
Business to business: brands, manufacturers, retailers, distributors and their AI agents. Eighteen markets, thirteen rule sets; every answer names the market, the rule set and the version it was judged against. Operated by GreenCore Solutions Corp. Public connect kit, MIT.
Notice: Artificial intelligence makes mistakes. A2A Cosmetics is an information source, not a recommendation. Rules differ by jurisdiction — refer to the regulator in your jurisdiction for the information that applies to you.
streamable-HTTP, stateless, server name a2a-cosmetics, door version 1.0.0, 20 tools (read from the wire 2026-09-20)
Product facts on this hub are served live from gtinfetch.ai, the GTIN resolver for AI agents; every answer carries its source page, date read and gtinfetch’s signature. Paid resolves at x402.gtinfetch.ai.
https://mcp.a2a-cosmetics.ai/mcp — any client that speaks streamable-HTTP: { "url": "https://mcp.a2a-cosmetics.ai/mcp", "transport": "streamable-http" }https://a2a-cosmetics.ai/a2a (the hub) and https:// .a2a-cosmetics.ai/a2a (one market agent per market, answered from its own Azure region)https://a2a-cosmetics.ai/.well-known/agent-card.json (ES256, kid a2ac-2026-09; keyring /.well-known/jwks.json)io.github.greencore-solutions/a2a-cosmetics (server.json in this repo)Three calls before any price: resolve_jurisdiction → resolve_actor → gate_transaction. Twelve reason codes: ALLOW · REQUIRE_NOTIFICATION · REQUIRE_RESPONSIBLE_PERSON · DENY_NOT_A_COSMETIC_HERE · DENY_INGREDIENT_BANNED · DENY_INGREDIENT_LIMIT · DENY_CLAIM · DENY_MARKET · DENY_ACTOR_CLASS · DENY_UNLICENSED_AGENT · DENY_NO_GTIN · DENY_NOT_VERIFIED.
resolve_jurisdiction, resolve_actor, gate_transactionget_ingredient_record, get_market_status, get_notification_requirements, get_label_and_claims, get_enforcement_watchsearch_cleared_items, get_item, compare_itemsfind_verified_supplier, get_availability, get_priceget_product_documents, verify_gtincreate_order_intent, a2a_handoffget_safety_label, log_auditReads are open. The six transacting tools take a client-credentials Bearer from the issuer, https://a2a-registry.ai (register at /oauth/register; see https://a2a-cosmetics.ai/auth.md).
| Role | Hostname | Agents | Region |
|---|---|---|---|
| Hub (concierge) | a2a-cosmetics.ai | 1 | South Central US |
| Registry (token questions) | a2a-registry.ai | 1 | South Central US |
| Payments door (receipt questions) | a2a-x402.ai | 1 | South Central US |
| Actor-class entry points | pharmacy · prescriber · wholesaler · brand + .a2a-cosmetics.ai | 4 | South Central US |
| Handoff (referral only) | handoff.a2a-cosmetics.ai | 1 | South Central US |
| Enforcement watch | watch.a2a-cosmetics.ai | 1 | South Central US |
| Auditor Port | audit.a2a-cosmetics.ai | 1 | South Central US |
36 agents live, 0 product-line slots reserved on the tenant table; by region: Australia East 1 · Brazil South 1 · Canada Central 1 · Central India 1 · France Central 2 · Germany West Central 1 · Italy North 1 · Japan East 1 · Korea Central 1 · Mexico Central 1 · Poland Central 1 · South Central US 18 · Southeast Asia 1 · Spain Central 1 · Switzerland North 1 · UAE North 1 · UK South 1 · West Europe 1. Counted from the hub's list_agents on 2026-09-20; door version 1.0.0, 20 tools.
Stock clients, no adapter: examples/aws_strands.py · examples/azure_semantic_kernel.py · examples/google_genai.py · examples/generic_mcp_client.py; A2A: examples/a2a_aws_strands.py · examples/a2a_azure_agent_framework.py · examples/a2a_google_sdk.py.
x402 is live on https://a2a-x402.ai (USDC on Base, settlement after the gate; a refused order intent is not settled and not charged). The Machine Payments Protocol, the Universal Commerce Protocol and the Agentic Commerce Protocol are built and dark until they can settle; the Agent Payments Protocol sits on the Agent Card. Front door: https://a2a-pay.ai.
mcp@a2a-cosmetics.ai — the registry contact for every listing this hub files.