"Tools or extensions for enhancing browser functionality" matching MCP connectors:
Matching Connector Tools:
Agent-facing intake for HORIZON SHIELD, the Japanese construction estimate auditor.
Live multi-asset market data for AI agents with provenance, starter credits, x402, and examples.
Cello MCP server to launch and manage your User Referral and Partner program — for developers and growth teams.
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!)
Free self-serve Agent Passports for AI agents: signed, portable, offline-verifiable credentials.
Structured iGaming reference: slot specs & RTP variants, providers, regulators, news and jobs.
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.
OneHaus household tools: tasks, calendar, contacts, pets, vehicles, documents and more.
Structured aquarium, marine, terrarium and paludarium data for AI agents.
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.
Evidence-gated task verification for AI agents. Decompose goals into acceptance criteria, attach proof (screenshot, curl, file), independent LLM judge accepts or rejects. 24 tools. Hosted remote MCP (streamable-http, OAuth 2.1 + DCR).
Public data intelligence for AI agents — CVE, compliance, patents, contracts, domains.
Free platform to test MCP clients without installing anything. Create mock tools with dynamic templates, configurable delays, conditions (if/then), and response sequences. Supports JSON-RPC 2.0 over Streamable HTTP. Built-in text_echo and json_echo tools. Rate-limited tiers: anonymous (5 calls/min, 1 mock tool), registered (10 calls/min, 4 mock tools), premium (60 calls/min, unlimited). Zero setup — no install, no registration required. More info: https://www.testmcp.dev
Eligibility-first UK & EU grant discovery, inside ChatGPT and Claude. Checks eligibility before recommending, explains why each grant fits, and cites the funder's own page on every answer — with an honest "competition_risk: unknown" when the data isn't there. 6 tools: search, fetch, find_opportunities, should_apply, explain_opportunity, complete_profile. Transport: Streamable HTTP. Auth: OAuth 2.1 + PKCE. Free to install, no card required.
MCP server for GOV.UK — search, content retrieval, organisation lookup, and postcode resolution.
AI infrastructure design agent. Describe your app in plain English; Riley designs, prices, and deploys AWS or GCP infrastructure with generated Terraform.
Pay-per-use tool API for AI agents. Free tier, x402 USDC micropayments, or API key.
Universal pay-per-call tool API for AI agents. Web search, price feeds, hive memory, LLM routing, code sandbox. Free tier (10 calls/day, no signup). x402 payments on Base + Solana.