"Exploring Gemini Services or Tools That Don’t Require an API Key" matching MCP connectors:

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

Conformance checker for MCP servers. Free, no key, verdicts recomputable and re-measured daily.

Reference data for prediction markets: graded resolution clarity, cross-venue links, provenance.

Neutral freight reference + validation layer for AI agents: ADR, HS, UN/LOCODE, freight math

290+ quality-scored API capabilities for AI agents across 27 countries via MCP.

Agent402: 500+ pay-per-call tools for agents over x402 + MPP or free via PoW. Agentic Finance

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

Verified data on 8,000+ AI tools for any AI assistant: live status, pricing reality, user sentiment, viability, and alternatives, every answer carries a last-verified date. Free, read-only, no auth.

Steam profiles, SteamID conversion, bans, FACEIT stats, friends and comparisons. Free, no API key.

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

Buy and manage travel eSIM data plans in the conversation. Pay by card (Stripe) or USDC over x402.

Neutral fairness computation for agents: fair division, verifiable random, Shapley shares.

Enumerate and inspect PubFi capabilities, then execute an exact selected route.

Daily editorials, exit costs, depth concentration, tiers, and sealed records. No commodity futures.

Malaysian SME accounting, e-Invoice and payroll — with an MCP server your AI works through. 49 tools: your AI reads the live books (P&L, balance sheet with server-computed period comparison, agings, cash and tax position), drafts every document type including adjusting journals, proposes bank classifications, stages a whole migration (chart of accounts, contacts, products, opening balances, historical documents) and even the workspace setup — and checks its own queue: what it filed, what you approved, what you rejected and why. It can never post: every entry waits for the owner's approval in Taokeh, most of it one tap on the /go page. RM29/month on every plan, included in the 14-day trial. Endpoint: taokeh.my/mcp

US funding-stress warning with construction-PIT evidence limits and explicit eligibility flags.

Read any page or file as clean text, plus live news, weather, market holidays and timezone lookups for agents. Pay-per-call in USDC on Base via x402 — no signup, no API keys.

Neutral fairness computation for agents: two or more parties submit sealed inputs, a published deterministic algorithm runs (fair division, verifiable random selection, Shapley shares), and every party receives an identical signed certificate anyone can re-run and verify for free.

Generate images & video (Nano Banana, Veo, Omni) pay-as-you-go. No subscription, crypto payments.

SEO research SaaS exposed as 30+ MCP tools. Forge niche analysis, plans, and writer-ready briefs.