Toolkit MCP Server

@cyanheads/toolkit-mcp-server Generate random IDs, QR codes, and hashes, encode and decode values, and geolocate IPs, plus gated network and system diagnostics, via MCP. STDIO or Streamable HTTP. Its README documents 7 tools, including toolkit_hash_value, toolkit_generate_id, toolkit_generate_qr.

People who work with cryptography, developer tools and geolocation and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-09-13 · ★ 18 · #26 OF 318 MAINTAINED FINANCE · VERIFIED 2026-09-18

Apache-2.0 · TypeScript servers · how we verify → /methodology

01 · Install Toolkit MCP Server

before you install - you'll need

Set MCP_TRANSPORT_TYPE, MCP_LOG_LEVEL, TOOLKIT_ENABLE_NET_DIAGNOSTICS, TOOLKIT_ENABLE_SYSTEM_INFO before connecting.

Claude Code

claude mcp add cyanheads-toolkit-mcp-server --transport http https://toolkit.caseyjhand.com/mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "cyanheads-toolkit-mcp-server": {
      "url": "https://toolkit.caseyjhand.com/mcp"
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

https://toolkit.caseyjhand.com/mcp

transport: streamable-http

endpoint alive - responded to MCP initialize · probed 2026-09-17

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions · remote - your agent's requests go to toolkit.caseyjhand.com

endpoint auth accepted our unauthenticated MCP initialize - no credentials needed to connect

license Apache-2.0 - declared in the repository

npm package @cyanheads/toolkit-mcp-server - published under the repo owner's npm scope (@cyanheads)

registry namespace io.github.cyanheads is GitHub-verified and matches the repo owner

03 · What Toolkit MCP Server can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can generate a cryptographic digest (sha256/sha512/sha1/md5), or constant-time-compare a value against an expected digest, and resolve a public IP or hostname to geographic and network metadata - country, city, coordinates, ASN, timezone.

The 7 tools it gives your agent

Extracted from the project's README - what toolkit-mcp-server lets an agent do.

toolkit_hash_value: - Generate a cryptographic digest (sha256/sha512/sha1/md5), or constant-time-compare a value against an expected digest.
toolkit_generate_id: - Mint cryptographically-random identifiers - UUIDv4, UUIDv7, or ULID - singly or in batches up to 1000.
toolkit_generate_qr: - Encode text or a URL into a QR code as SVG markup, base64 PNG, or a terminal-renderable string.
toolkit_encode_value: - Encode or decode a value across base64, base64url, hex, or URL percent-encoding, in either direction.
toolkit_geolocate_ip: - Resolve a public IP or hostname to geographic and network metadata - country, city, coordinates, ASN, timezone.
toolkit_check_network: - Gated, off by default. Read-only network diagnostics from the server host - ping, traceroute, TCP connectivity, or egress-IP detection.
toolkit_check_system: - Gated, off by default. Report a facet of the server host's system state - OS, CPU, memory, load average, or network interfaces.

Latest releases

v2.2.3 · 2026-09-13

Framework adoption and domain error codes · toolkit_encode_value, toolkit_generate_qr, and toolkit_hash_value return ValidationError for declared domain rejections; InvalidParams is now the framework envelope for…

v2.2.2 · 2026-08-22

Docker cross-compile fix · Dockerfile build stage runs on $BUILDPLATFORM instead of emulating, fixing the multi-arch GHCR publish that aborted under QEMU on 2.2.1 (no image reached GHCR) · Published image contents are…

v2.2.1 · 2026-08-22

mcp-ts-core 0.12.3 adoption and log-sink hardening · @cyanheads/mcp-ts-core ^0.11.5 → ^0.12.3, replacing the transitive @modelcontextprotocol/sdk ^1.30.0 with @modelcontextprotocol/server/client ^2.0.0. Ships…

04 · Who maintains Toolkit MCP Server

toolkit-mcp-server is maintained by cyanheads. We track 125 MCP servers from cyanheads - 119 actively maintained, 1,816 combined GitHub stars, oldest repo from Dec 2024. Full record: all servers from cyanheads.

05 · Facts

repository: github.com/cyanheads/toolkit-mcp-server
category: finance - ranked #26 of 318 actively-maintained finance servers as of 2026-09-18.
release cadence: 7 releases in the last 90 days (latest 2026-09-13)
registry: io.github.cyanheads/toolkit-mcp-server (active, first published 2026-06-28 · 7 versions)
packages: npm:@cyanheads/toolkit-mcp-server · npm:@cyanheads/toolkit-mcp-server

06 · Toolkit MCP Server FAQ

Is Toolkit MCP Server still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-13 and it shipped 7 releases in the last 90 days. We re-verify nightly.

What can Toolkit MCP Server do?

How do I install Toolkit MCP Server?

Run `npx -y @cyanheads/toolkit-mcp-server`. The README documents 4 environment variables (MCP_TRANSPORT_TYPE, MCP_LOG_LEVEL, TOOLKIT_ENABLE_NET_DIAGNOSTICS…) to set first. Set MCP_TRANSPORT_TYPE, MCP_LOG_LEVEL, TOOLKIT_ENABLE_NET_DIAGNOSTICS, TOOLKIT_ENABLE_SYSTEM_INFO before connecting. You can also paste the ready-made client config above.

Does Toolkit MCP Server require authentication?

No - the endpoint accepted our unauthenticated MCP initialize when probed on 2026-09-17; you can connect without credentials.

07 · Alternatives to Toolkit MCP Server

Alternatives to Toolkit MCP Server

Maintained finance servers if Toolkit MCP Server isn't the fit.

Pairs well with

Servers that cover what Toolkit MCP Server doesn't - only shown when the pairing reason fits the companion.

More finance MCP servers · Open Markets · Equibles · Yahoo Finance (danishashko) · Financial Modeling Prep (fmpsdk) · Debridge MCP

More TypeScript MCP servers · Treasury Fiscaldata MCP Server · Un Comtrade MCP Server · Usaspending MCP Server · Who Gho MCP Server · Wikidata MCP Server · see all