"Handshake" matching MCP servers:

An Operit-compatible adapter of the Exa MCP server, enabling web search, code search, and company research capabilities in AI assistants. It fixes MCP handshake compatibility issues, allowing tools like web_search_exa and web_fetch_exa to load and run reliably.

Autonomous synthetic health checks, JSON-RPC 2.0 handshake validation, breaking schema drift detection, and credential leak scanning for remote MCP servers.

A base template for instantiating TypeScript stdio MCP servers, providing a single registerTools seam, structured output, and annotation presets that force every tool to carry its safety hints. It ships a get_datetime example tool that exercises the SDK end to end — handshake, annotations, structured output, and schema rejection — plus tool-level tests, so new servers inherit a proven scaffold rather than discovering SDK unknowns themselves.

Enables agents to validate email addresses through RFC 5321 syntax checks, MX record lookups, a 182,000-domain disposable blacklist, role-account detection, and an optional SMTP handshake. Runs locally via npx or as a hosted HTTP endpoint, returning explainable per-check scores at zero per-lookup API cost.

MCP-native health monitoring that probes MCP servers using the list_tools protocol handshake, detects version drift, stores history in SQLite, and generates an HTML dashboard.

A remote MCP server that gives MCP clients authenticated access to GitHub: repos, issues, pull requests, file contents, and search, over a proper OAuth 2.1 handshake. Runs on Cloudflare Workers.

MCP server for E*TRADE that reads account balances, positions, transactions, and orders, with optional opt-in order placement via a two-step preview-confirm handshake.

Enables multiple MCP clients to securely access various third-party MCP backends through a single HTTP gateway, with modern MCP handshake compatibility and session lifecycle management.

Enables agents to inspect and diagnose their own MCP setup by exposing read-only tools that audit configured servers, report which coding agents have configs, surface misplaced or duplicated registrations, and list curated preset packs. It also powers CLI workflows for checking handshake, tool lint, and tool-surface quality scores of any stdio server.

Enables an agent to find a business by phone number, check availability, book and cancel appointments, and verify business-signed receipts against a sandbox registry and demo shops that run locally over stdio. Every registry record and receipt is signature-checked, and nothing real is booked because the shops live inside the server process.

Enables agents to search MCP servers ranked by measured handshake checks, tool lists, repository signals, and signed reports, with open data.

Enables pre-2026-07-28 MCP clients using the old initialize handshake to communicate with 2026-07-28 MCP servers by acting as a proxy, with no changes to either side.

Enables autonomous agents to discover and bid on unused LLM token quota through a machine-to-machine secondary exchange protocol. It utilizes a Proof-of-Residue handshake to verify compute capacity and facilitate the real-time acquisition of verified residue tokens.

Launches any MCP server as a real client would, running the handshake, inspecting every tool's schema and description, and deliberately making a bad tool call to test error handling. Returns one deterministic, evidence-backed score with named issues so servers can be verified before users' agents hit them in production.

Enables agents to probe a live host's TLS handshake, read the actual SubjectPublicKeyInfo from the served certificate, and corroborate that exact key against Certificate Transparency logs to learn how long it has been harvestable. Exposes typed tools for ranking watches by urgency, recording triage decisions, replaying audit chains, and exporting OpenSSL migration configs, runbooks and sealed JSON dossiers.

Enables remote execution of basic arithmetic operations (add and subtract) via MCP over HTTP/SSE in a distributed network, demonstrating MCP handshake, capability negotiation, and dynamic tool discovery.

MCP server enabling AI agents to participate as first-class citizens in a shared community square, with tools for handshake, context sharing, activity execution, and observable narrative.