dxt-packaging

dxt-packaging is a skill for Claude Code, Codex from adeze/raindrop-mcp. It costs 17 tokens per session (481 once invoked), scanned A, original, MIT.

A packaging guide for MCP servers, which are programs that let AI assistants use tools and data. It explains how to bundle these servers into MCPB archive files for discovery and use.

In plain words
What is it for?
Building MCPB bundles, writing the required manifest, defining and validating tools, handling errors and timeouts, and using standard input/output communication.
Why use it?
It removes the guesswork from creating a correctly structured, distributable bundle and communicating with assistants through the MCP standard.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/adeze/raindrop-mcp/dxt-packaging
Any agent
npx skills add adeze/raindrop-mcp --skill dxt-packaging
Clone the repo
git clone --depth 1 https://github.com/adeze/raindrop-mcp

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for dxt-packaging

README.md
[![agentmods](https://agentmods.dev/badge/skills/adeze/raindrop-mcp/dxt-packaging.svg)](https://agentmods.dev/skills/adeze/raindrop-mcp/dxt-packaging)
Your own site
<a href="https://agentmods.dev/skills/adeze/raindrop-mcp/dxt-packaging"><img src="https://agentmods.dev/badge/skills/adeze/raindrop-mcp/dxt-packaging.svg" alt="Measured on agentmods" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 481 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00017 $0.00481
Opus 5 $0.00009 $0.00241
Sonnet 5 $0.00003 $0.00096
Haiku 4.5 $0.00002 $0.00048

Measured 4d ago against content hash 2f92270331b8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

dxt-packaging scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.github/skills/dxt-packaging/SKILL.md · 64 lines

How it starts

The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MCPB Packaging Skill (DXT legacy)

Guidelines for building and packaging MCP servers as MCP Bundles (MCPB). DXT references are legacy.

Overview

MCP Bundles (MCPB) allow AI assistants to discover and use MCP servers from a package archive. This skill covers the complete MCPB development workflow.

Getting Started

Read the Specifications

  1. Architecture & Overview: https://github.com/anthropics/mcpb
  2. MCPB Repository: https://github.com/anthropics/mcpb
  • README.md - Architecture overview, capabilities, and integration patterns
  • MANIFEST.md - Complete bundle manifest structure and field definitions
  • examples/ - Reference implementations including a "Hello World" example

Create Proper Bundle Structure

  • Generate a valid manifest.json following the MANIFEST.md spec
  • Implement an MCP server using @modelcontextprotocol/sdk with proper tool definitions
  • Include proper error handling and timeout management

Development Best Practices

MCP Protocol Communication

  • Implement proper MCP protocol communication via stdio transport
  • Structure tools with clear schemas, validation, and consistent JSON responses
  • Make use of the fact that this bundle will be running locally

Logging & Debugging

  • Add appropriate logging and debugging capabilities
  • Use structured logging for error tracking
  • Include proper documentation and setup instructions

Testing Considerations

  • Validate that all tool calls return properly structured responses
  • Verify manifest loads correctly and host integration works
  • Generate complete, production-ready code that can be immediately tested
  • Focus on defensive programming and clear error messages
  • Follow the exact MCPB specifications to ensure ecosystem compatibility

Key Files

  • manifest.json - Bundle metadata and configuration
  • src/index.ts - Main entry point for the MCP server
  • build/ - Compiled output for distribution

References

Read the full file on GitHub · 64 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 64 lines · 17 tokens per session scan A 2f92270331b8

Subscribe to this mod's changes

dxt-packaging is a skill published in the GitHub repository adeze/raindrop-mcp (183 stars, last pushed 1mo ago), licensed MIT. It adds 17 tokens to every session and 481 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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