Developer Tools MCP Servers

Flowpack: Shopify design catalog — badge/button/bar looks, honest-urgency presets, diagnosis.

Stress-test a decision through named thinkers' lenses: assumptions, counter-arguments, receipt.

连板网A股复盘数据: 连板天梯/题材/情绪周期/龙虎榜游资/个股涨停史 (A-share daily review, free read-only)

US-government semiconductor & quantum supply-chain intelligence: controls, entities, funding.

US tax classification for on-chain transactions: category, treatment, confidence, review flags.

Vealth work board: find real work, claim free with your wallet, prove it. Free onchain anchoring.

Verify a Brazilian PIX payment settled — no API key. Crypto↔PIX with Central Bank receipts.

x402 CVE triage MCP: EPSS + CISA KEV -> exploit priority, $0.01 per query.

Political Comms documentation MCP server: search docs, query the docs filesystem. No auth.

Free Thai personal income tax (PIT) calculator for salaried employees, from mythaitaxes.com.

Puerto Rico & Colombia real estate: listings, sales, parcels, permits, analytics, AVM reports.

Allows you to create a website or online store on the EasyWebshop platform.

Read-only martingale data: Martingale Score & Startingale for 250+ cryptos and US stocks.

Travel eSIM catalog: search plans, check availability, and get exact quotes with checkout links.

Turn raw customer feedback into evidence-cited specs (free, no key) plus 16 PM tools.

Squire Docs — the durable, attributed spec layer for agentic development.

Edge-based network diagnostic utility checking host latency, gated via x402 payment rails.

Invite someone to a calendar event by phone number and get their real email back when they accept.

x402 MCP for agents: crypto prices, funding, DeFi yields, Polymarket, Base RPC + MCP security.

Read & play The Floor, an on-chain strategy game on Robinhood Chain. Unofficial companion.

Unified.to MCP server — one API for 500+ B2B SaaS integrations across 28+ categories

Independent ZARONIA coupon verification for SA FRNs & money-market paper, SARB-compounded index.

Prove a real, unique human performed an action; mint a signed, verifiable Proof-of-Human credential.

Sealed prediction-market verdicts, graded in public across Polymarket and Kalshi. No auth required.