"MCP servers that work without API keys" matching MCP connectors:

Social media analytics, video analysis, and competitor intel for any MCP-compatible AI agent.

The Brain Layer for AI Trading Agents — quant calls + cross-venue arb across perp venues via MCP.

Savvly MCP: query fund data, model projections, and compare against alternative retirement products.

Find 76,000+ curated healthcare service vendors across 25 categories and all 50 US states.

Read-only MCP server for the OrchestKit docs: full-text search + Markdown fetch. No auth.

AIOProductOS spine over MCP — customers, revenue, feedback, work, analytics on one typed record.

Not another dashboard. Opula is an AI wealth analyst inside Claude that unifies every asset your bank can't sync — crypto, real estate, and private holdings — and answers portfolio questions with deterministic, rule-computed facts instead of guesses.

AI-readable directory of 3,500+ local businesses across 14 Southeast Asian cities.

Entity resolution — data mapping, SDK code generation, docs search, and error troubleshooting

Reassign: a circular 24-hour calendar and time-tracking copilot with ADHD-friendly scheduling.

Host-owned vacation-rental direct booking via VRP. Signed offers, 0% commission. Not an OTA.

Test-inbox API for email and SMS: create inboxes, long-poll messages, extract OTPs and links.

Ready for a new way to bill pay? Pay any US bill in a snap, right from your AI assistant. Describe or snap a photo of your bill (electric, water, gas, internet, phone, medical, credit card, rent, parking tickets, traffic violations and more) and Papaya reads it, then hands you a secure link to pay by card. Fast, secure, and no juggling twelve logins, with full or partial payments and status updates. Available in the US only. Powered by Papaya (papayapay.com).

Keyless docs search so coding agents wire up RoxyAPI: every endpoint, param and SDK call.

Search flights by route, dates, passengers, and cabin class. By Alice, Israel's travel app.

Public, read-only MCP over the complete 64-hexagram I Ching corpus. Deterministic lookup only.

Discovery, OAuth handoff, and project MCP routing for Spala backend projects.

Real-time electricity prices for AI agents. 40+ countries, 100+ zones. No auth required.

MCP server for Brazilian Federal Senate open data (legislative, administrative, e-Cidadania).

Crypto data for trading agents: liquidations, positioning, funding. x402 USDC on Solana or Base.