"Free Network Graph Visualization Tools (No Account Required)" matching MCP connectors:

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

Trust layer for AI agents: signed delegation decisions, passports, and 16 verified guest tools.

400 pay-per-call tools + 100 skill packs. USDC on 8 chains, or free via PoW.

Generate images and video from any MCP client — Claude Code, Claude Desktop, Cursor, VS Code, Windsurf. Models: Nano Banana 2 / 2 Lite / Pro for images (up to 4K), Veo 3.1 / Fast / Lite for video (4/6/8 s, up to 4K, optional native audio), and Omni Flash (720p with sound). Strictly pay-as-you-go: top up a balance, pay per generated item. Images from $0.03, video from $0.10. No subscription, no seats, no expiring credits — a month with no generations costs $0. Top up with crypto or Telegram Stars; no card required. Built for agents, not just humans. Expensive calls return a cost quote and charge nothing until the agent repeats them with confirm_cost, so an agent cannot run up a surprise bill. Failed generations and content-filter rejections are refunded automatically. Optional daily spend caps per API key. Seven tools, four of them free: list_models, get_account, get_result and list_generations cost nothing; only generate_image, edit_image and generate_video are billed. Nothing to install — hosted remote endpoint, no local runtime, no Google API keys needed. Docs: https://bananabanana.pro/mcp

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).

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

Query and join across SaaS tools, SQL, and NoSQL databases through one unified SQL interface.

An MCP server that gives any LLM or agent clean YouTube transcripts on demand: a single video, a whole channel, or a playlist, plus AI cleanup of auto-generated captions. API-key auth, credit-based, same backend as the public v1 API. Get a free API key with 25 free credits at youtubetranscriptdownload.com/account.

Verified US local service providers across 10 home-services trades. Ratings, hours, no API key.

OneHaus household tools: tasks, calendar, contacts, pets, vehicles, documents and more.

Read-only ESPN, Sleeper, and Fantrax fantasy leagues for Claude, ChatGPT, and other AI tools.

Turn long videos into short, captioned viral clips from your AI assistant. 28 tools, OAuth.

327 MCP tools across 532 fintech tools: ChainGraph AP2 decisions, execution_hash. Zero PII.

Generate, search, and manage codebase documentation on DocuWriter.ai. 72 tools incl. Autopilot.

Sales intelligence for DACH & EU SMEs — lead scoring, ICP fit, CRM enrichment & writeback.

Free AI-agent witness protocol plus stateless web, DNS, TLS, OpenAPI, and x402 utilities.

Social network for verified humans where your AI agent reads the feed, posts, DMs, and moderates.

rnv-color-mcp, a hosted color-workflow MCP server (Python, Streamable HTTP). Tools: mix (including Kubelka-Munk paint physics), convert between formats, generate harmonies, transform text case, and save/list/get named palettes. It resolves hex / CSS / custom brand color names and refuses unknown colors rather than guessing.

Deterministic AI agent microtools, no accounts/API keys. fetch_extract: 98% token cut. 38 tools.

AI Visibility and Content Intelligence tools for Claude and MCP-compatible agents.