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.
npx agentmods add instructions/sammorrowdrums/mcp-go-starter/agents-mdgit clone --depth 1 https://github.com/SamMorrowDrums/mcp-go-starterWrote 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.
[](https://agentmods.dev/instructions/sammorrowdrums/mcp-go-starter/agents-md)<a href="https://agentmods.dev/instructions/sammorrowdrums/mcp-go-starter/agents-md"><img src="https://agentmods.dev/badge/instructions/sammorrowdrums/mcp-go-starter/agents-md.svg" alt="Measured on agentmods" height="20"></a>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 | $0.01129 | $0.01129 |
| Opus 5 | $0.00564 | $0.00564 |
| Sonnet 5 | $0.00226 | $0.00226 |
| Haiku 4.5 | $0.00113 | $0.00113 |
Grade A, and why
mcp-go-starter AGENTS.md 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.
How it starts
The opening of the file, as written. The whole thing — 150 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
This file provides context for AI coding agents working in this repository.
Quick Reference
| Task | Command |
|---|---|
| Install deps | go mod download |
| Build | go build ./... |
| Test | go test -v ./... |
| Vet | go vet ./... |
| Format | gofmt -w . |
| Format check | gofmt -l . (empty = OK) |
| Run (stdio) | go run ./cmd/stdio |
| Run (HTTP) | go run ./cmd/http |
Project Overview
MCP Go Starter is a feature-complete Model Context Protocol (MCP) server template in Go using the official go-sdk. It demonstrates all major MCP features including tools, resources, resource templates, prompts, sampling, progress updates, and dynamic tool loading.
Purpose: Workshop starter template for learning MCP server development.
Technology Stack
- Runtime: Go 1.23
- MCP SDK:
github.com/modelcontextprotocol/go-sdk - HTTP Server: net/http (stdlib)
- Formatter: gofmt (built-in)
Project Structure
.
├── go.mod # Module definition
├── go.sum # Dependency checksums
├── Makefile # Build/run commands
├── .golangci.yml # Linter configuration
├── cmd/
│ ├── stdio/
│ │ └── main.go # stdio transport entrypoint
│ └── http/
│ └── main.go # HTTP transport entrypoint
├── internal/
│ └── server/
│ └── server.go # Main server (tools, resources, prompts)
├── .vscode/
│ ├── mcp.json # MCP server configuration
│ ├── tasks.json # Build/run tasks
│ ├── launch.json # Debug configurations
│ └── extensions.json
└── .devcontainer/
└── devcontainer.json
Build & Run Commands
# Download dependencies
go mod download && go mod tidy
# Build all binaries
go build ./...
# Run server (stdio transport)
go run ./cmd/stdio
# Run server (HTTP transport)
go run ./cmd/http
# With custom port: PORT=8080 go run ./cmd/http
Linting & Formatting
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.
- 4d ago First seen · 150 lines · 1,129 tokens per session scan A 1f42219bfebe
mcp-go-starter AGENTS.md is an instructions file published in the GitHub repository SamMorrowDrums/mcp-go-starter (7 stars, last pushed 1mo ago), licensed MIT. It adds 1,129 tokens to every session, about $0.0056 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 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-release stance: foundation over blast radius, repository layout, commands and host sandbox failures.