"How to create a UI using Flutter" matching MCP connectors:

SSRF-safe web intelligence: 32 paid x402 tools, 3 free tools, buyer prompt and guide.

UK due diligence — Companies House, Charity Commission, Land Registry, Gazette, HMRC VAT

A complete color workflow over MCP: mix, convert, harmonize, measure, and remember palettes.

Connect your AI assistant to Signed and ask about your angel investing in plain English: how the portfolio is doing, what distributions came in this year, what’s sitting in the pitch queue. It's a view into the startups that you've invested in (or are thinking of investing in!)

PDF engagement layer for apps and agents: tracking links, read analytics, and a full PDF toolset.

Turn any webpage into a structured action manifest — clickable, fillable, submittable elements.

Hosted, OAuth-gated endpoint for quantakrypto's post-quantum crypto tools: scan code for quantum-vulnerable cryptography (RSA/ECDH/ECDSA/DH) and get NIST ML-KEM/ML-DSA/SLH-DSA migration guidance over authenticated HTTP — nothing to install. Sign-in required (Google/GitHub/email). Same tools as the open-source @quantakrypto/mcp server; source at github.com/quantakrypto/pqc-tools.

Check if a task runs locally vs cloud. Save money on calls that don't need cloud inference.

MCP server for agent-run URL A/B testing. Create projects, allowlist domains, launch URL experiments, track conversions, and retrieve performance reports for customer-owned sites.

Generate and read PDFs for AI agents: a generate_pdf and a read_pdf tool, priced per document.

UK legal research — case law, legislation, Hansard, bills, votes, committees, HMRC, citations

UK property data — Land Registry comps, EPC, Rightmove, rental yields, stamp duty, Companies House

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).

Pay any US bill in a snap, right from your chat — utilities, medical, rent, parking tickets & more.

Teardrop is the native economic layer for AI agents, providing a robust suite of tools for multi-chain portfolio tracking, DeFi yield analysis, and gas estimation. It enables autonomous agents to securely find Web3 data and manage micro-payments on-chain with zero human intervention.

Condition-aware ingredient & product safety intelligence for agents: verdict + evidence tier + per-claim evidence_state (cited = ≥1 verified citation / referenced = sourced-but-unverified) + citations, across breastfeeding, pregnancy, histamine/MCAS, rosacea, HS, allergy, fertility, and toddler lenses. Includes validate_claim to fact-check a free-text health claim against curated cited sources.

Create long-form YouTube videos end to end: script, storyboard, voiceover, final MP4.

CatchAll is a web search API built for comprehensive event retrieval — not ranked results, but all matching records.

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.

Authenticated hosted Streamable HTTP MCP server for crypto data routing through PubFi capability and gateway tools.