Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Single-connection MCP gateway discovering and executing 490+ verified MCP & A2A tools.
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://x402broker.com/api/mcpRun this in your terminal
claude mcp add --transport http gateway https://x402broker.com/api/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"gateway": {
"url": "https://x402broker.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": {
"gateway": {
"type": "http",
"url": "https://x402broker.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://x402broker.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 7, 2026. The maker wrote them, not us; we show them as plain text.
search_catalogSearch the UCP product and API credit catalog by keyword. Example: search_catalog(query='pass')
lookup_catalogBatch lookup catalog items by product identifier list. Example: lookup_catalog(ids=['agd-pass-2000'])
get_productRetrieve full product or API pass metadata by product_id. Example: get_product(product_id='agd-pass-2000')
get_product_detailsRetrieve product pricing and variant IDs by product_id. Example: get_product_details(product_id='agd-pass-2000')
search_shop_policies_and_faqsSearch store privacy, refund, terms of service, and SLA policies. Example: search_shop_policies_and_faqs(query='refund')
create_cartCreate a new shopping cart with initial line items. Example: create_cart(line_items=['agd-pass-2000'])
get_cartRetrieve current shopping cart items and totals by cart_id. Example: get_cart(cart_id='cart_1')
update_cartUpdate line item quantities in an active shopping cart. Example: update_cart(cart_id='cart_1', line_items=[])
cancel_cartCancel an active shopping cart session by cart_id. Example: cancel_cart(cart_id='cart_1')
create_checkoutCreate a UCP checkout session for API passes or credits. Example: create_checkout(line_items=['agd-pass-2000'])
get_checkoutRetrieve checkout session status and totals by checkout_id. Example: get_checkout(checkout_id='chk_1')
update_checkoutUpdate buyer or payment rail details on a checkout session. Example: update_checkout(checkout_id='chk_1')
complete_checkoutFinalize checkout settlement via Base USDC x402 or Stripe MPP. Example: complete_checkout(checkout_id='chk_1')
cancel_checkoutCancel an uncommitted checkout session by checkout_id. Example: cancel_checkout(checkout_id='chk_1')
get_orderRetrieve fulfilled order receipt and API pass key by order_id. Example: get_order(order_id='ord_1')
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 publisher (x402broker.com) is not the repo owner (robertoyanguas-ops); someone else may have listed it
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Responded in 65 ms (HTTP 200)
No sign-in needed
Read 15 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 2 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 (7.0.17) reached the registry 18 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, Toggl 2.0
Servers in the same category from other makers, sorted by stars.
Reading a card:↓ Downloads per weeki★ 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.
Live Observatory: https://assay-207908449630.us-central1.run.app
Assay continuously probes remote MCP, A2A, and x402 endpoints to verify liveness, pin canonical SHA-256 tools/list schema hashes (detecting silent MCP Rug Pulls), and scan for prompt-injection tool poisoning before your agent pays or executes a tool.
https://assay-207908449630.us-central1.run.app/mcpPOST https://assay-207908449630.us-central1.run.app/v1/preflightGET https://assay-207908449630.us-central1.run.app/v1/leaderboard