What is mcp-sdk-migrate?

A command that updates Go code for an MCP server from the unofficial mark3labs SDK to the official modelcontextprotocol SDK. MCP, or Model Context Protocol, is a standard way for software to provide tools to an AI assistant.

Use it to migrate a Go file or server package, update imports, change server setup and tool registration, and adapt handler types to the official SDK.

It removes the need to perform the SDK migration manually while keeping the existing business logic intact.

How glassBead-tc/widescreen-research configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to glassBead-tc/widescreen-research. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/glassBead-tc/widescreen-research/main/.claude/commands/mcp-sdk-migrate.md

Clone the repo

git clone --depth 1 https://github.com/glassBead-tc/widescreen-research

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/glassbead-tc/widescreen-research/mcp-sdk-migrate/github.svg)](https://agentmods.dev/commands/glassbead-tc/widescreen-research/mcp-sdk-migrate)

Your own site

<a href="https://agentmods.dev/commands/glassbead-tc/widescreen-research/mcp-sdk-migrate"><img src="https://agentmods.dev/badge/commands/glassbead-tc/widescreen-research/mcp-sdk-migrate/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/commands/glassbead-tc/widescreen-research/mcp-sdk-migrate"><img src="https://agentmods.dev/badge/commands/glassbead-tc/widescreen-research/mcp-sdk-migrate.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 509 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.00509
Opus 5	$0.00000	$0.00254
Sonnet 5	$0.00000	$0.00102
Haiku 4.5	$0.00000	$0.00051

Measured 9d ago against content hash 333f60bdd032, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

mcp-sdk-migrate 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 9d 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.

.claude/commands/mcp-sdk-migrate.md · 65 lines

What it actually says

MCP SDK Migration Command

Migrates Go MCP server code from unofficial mark3labs SDK to official modelcontextprotocol SDK.

Usage

/mcp-sdk-migrate [file_path]

What it does

Analyzes the target Go file for mark3labs MCP patterns
Converts to official SDK patterns
Updates imports
Transforms tool registration from declarative to AddTool pattern
Updates server initialization and transport setup
Preserves all business logic

Examples

# Migrate a single file
/mcp-sdk-migrate cmd/my-server/main.go

# Migrate server package
/mcp-sdk-migrate pkg/mcp/server.go

What gets converted

Imports

github.com/mark3labs/mcp-go/mcp → github.com/modelcontextprotocol/go-sdk/mcp
github.com/mark3labs/mcp-go/server → (removed, use mcp package)

Server Creation

server.NewMCPServer("name", "version", opts...) → mcp.NewServer(&mcp.Implementation{Name: "name", Version: "version"}, nil)

Tool Registration

mcp.NewTool(name, mcp.WithDescription(...), mcp.WithString(...)) → Type-safe struct with jsonschema tags
server.AddTool(tool, handler) → mcp.AddTool(server, &mcp.Tool{...}, handler)

Handler Signature

func(ctx, mcp.CallToolRequest) (*mcp.CallToolResult, error) → func(ctx, *mcp.CallToolRequest, Args) (*mcp.CallToolResult, any, error)

Server Start

server.ServeStdio(server) → server.Run(ctx, &mcp.StdioTransport{})

Error Handling

mcp.NewToolResultError(msg) → &mcp.CallToolResult{IsError: true, Content: []mcp.Content{&mcp.TextContent{Text: msg}}}
mcp.NewToolResultText(msg) → &mcp.CallToolResult{Content: []mcp.Content{&mcp.TextContent{Text: msg}}}

Notes

Creates backup with .backup extension
Preserves all comments and business logic
May require manual adjustment for complex parameter extraction
Always test after migration

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.

9d ago First seen · 65 lines · 0 tokens per session scan A 333f60bdd032

Subscribe to this mod's changes

mcp-sdk-migrate is a command published in the GitHub repository glassBead-tc/widescreen-research (6 stars, last pushed 10mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 509 tokens. 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 2026-08-31.

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widescreen-research: Command for Claude Code