keryx

Name: keryx Review
Item: keryx
Rating: 3.0
Author: Aaron Matthews

Skill Development Usable

Works inClaude Code

Usable Scanned — metadata only

Keryx unifies MCP server and REST API development in TypeScript, eliminating duplicate code and reducing context-switching between tool interfaces.

A fullstack TypeScript framework where you write a controller action once and it works everywhere: the same class handles HTTP requests, WebSocket messages, CLI commands, background tasks, and MCP tool calls with shared Zod validation and middleware. Every action is automatically an MCP tool with OAuth 2.1 auth, so AI agents call the exact same validated endpoints as your HTTP clients. Runs on Bun with Drizzle ORM, Resque background tasks, and a typed React frontend companion.

Expose database queries to Claude while maintaining REST endpoints
Build Claude tools that also serve webhook consumers
Create internal Claude skills backed by existing API routes

32 starsMIT (commercial OK)FreeQuick setup

Usable rating — This tool is functional but has notable gaps. Review the evaluation notes below before deploying.

Why it matters

Keryx unifies MCP server and REST API development in TypeScript, eliminating duplicate code and reducing context-switching between tool interfaces. Teams can expose the same business logic to both Claude via MCP and external systems via HTTP.

Best for

Backend teams building services that need both Claude integration and traditional API access without maintaining separate implementations.

Works in

Claude Code Claude Cowork Claude Chat

Source

https://github.com/actionhero/keryx

By actionhero

How to Get It

Option 1: Claude Desktop App (Code Mode)Click the + button next to the prompt box → Plugins → Add plugin. Search and click Install. Skills work in Claude Code only.

Option 2: Paste into Claude CodeCopy the command below and paste it into your conversation. Claude will install it.

Command

bunx keryx new my-app

Tip: Paste this into a Claude Code conversation. Verify command matches your Claude Code version.

First thing to try

After installing, paste this into Claude:

Help me expose database queries to Claude while maintaining REST endpoints

PrerequisitesBun runtime, PostgreSQL, and Redis (per README Quick Start).CostFree

Trust Signals Auto-scanned

Stars32Contributors3Last updated2026-08-15LicenseMIT (OK for commercial use)Known CVEsNone foundSources: GitHub Advisory Database + OSV.dev · Scanned 2026-08-18 · scanner v1

Community Pulse Emerging

Discussed on Reddit

Keryx: a fullstack API framework built specifically for Bun — Reddit · 22 pts
Keryx: write one TypeScript action class, get HTTP + WebSocket + CLI + backgroun — Reddit · 12 pts
Keryx: a fullstack TypeScript framework where every action is automatically an M — Reddit · 6 pts

3 mentions across 1 sources

Reviewer notes

Auto-scanned review. These are observations, not a security certification.

catalog_hygiene stale-eval refresh: Scored from trust signals (evidence-eval-v1): 32 GitHub stars; 3 contributors; last commit 3d ago; license MIT.

Things to check

Scanned, not hands-on tested — this entry was auto-scanned from public metadata (GitHub metrics, license, security flags). No reviewer has run it, and no tool-specific limitations have been documented yet.

How to evaluate tools before deploying →

Data shown here comes from public APIs and automated scanning. Reviewer notes reflect one person's experience. This is not a security certification or legal recommendation. Always evaluate tools according to your own organization's policies.

Evaluation Scores

Evaluation

Ease of Use

3/5

Versatility

2/5

Reliability

4/5

Security

3/5

Overall score3.00 / 5.00 UsableEvaluatedAug 2026

catalog_hygiene stale-eval refresh: Scored from trust signals (evidence-eval-v1): 32 GitHub stars; 3 contributors; last commit 3d ago; license MIT.

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