go

go is a cursor rule for coding agents from sfc-gh-cconner/support-rules-mcp. It costs 1,564 tokens per session, scanned A, original, Apache-2.0.

A set of guidance for using the Go driver that lets Go programs connect to Snowflake.

In plain words
What is it for?
Use it to inspect the gosnowflake driver, troubleshoot connection or authentication problems, and look up OAuth, JWT, and multi-factor authentication code.
Why use it?
It helps developers investigate how connections, connection settings, data-source-name parsing, and authentication work in Go.

Cursor rule

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 rules/sfc-gh-cconner/support-rules-mcp/go
Clone the repo
git clone --depth 1 https://github.com/sfc-gh-cconner/support-rules-mcp

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 go

README.md
[![agentmods](https://agentmods.dev/badge/rules/sfc-gh-cconner/support-rules-mcp/go.svg)](https://agentmods.dev/rules/sfc-gh-cconner/support-rules-mcp/go)
Your own site
<a href="https://agentmods.dev/rules/sfc-gh-cconner/support-rules-mcp/go"><img src="https://agentmods.dev/badge/rules/sfc-gh-cconner/support-rules-mcp/go.svg" alt="Measured on agentmods" height="20"></a>
Per session 1,564 This file is loaded in full into every session.
When invoked 1,564 The same file — it is already loaded in full.
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 $0.01564 $0.01564
Opus 5 $0.00782 $0.00782
Sonnet 5 $0.00313 $0.00313
Haiku 4.5 $0.00156 $0.00156

Measured 3d ago against content hash 7bd51fdfd4d7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

go 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 3d 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.

rules/connectors/go.mdc · 267 lines

How it starts

The opening of the file, as written. The whole thing — 267 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Go Driver (gosnowflake) Investigation Guide

PURPOSE: Go driver (gosnowflake) patterns for Go applications connecting to Snowflake.

Access Method: GitHub MCP API tools
Repository: snowflakedb/gosnowflake

🔍 Quick Investigation Patterns

Connection Issues

# Search for connection implementation
mcp_github_search_code(
    query='Connect OR Open repo:snowflakedb/gosnowflake language:go'
)

# Get driver implementation
mcp_github_get_file_contents(
    owner="snowflakedb", repo="gosnowflake", path="driver.go"
)

# Connection configuration
mcp_github_get_file_contents(
    owner="snowflakedb", repo="gosnowflake", path="connection.go"
)

# DSN parsing
mcp_github_search_code(
    query='parseDSN OR Config repo:snowflakedb/gosnowflake'
)

Authentication Issues

# Search for auth methods
mcp_github_search_code(
    query='authenticator OR auth repo:snowflakedb/gosnowflake'
)

# OAuth implementation
mcp_github_search_code(
    query='authenticateWithOAuth OR externalbrowser repo:snowflakedb/gosnowflake'
)

# JWT authentication
mcp_github_search_code(
    query='authenticateWithJWT OR privateKey repo:snowflakedb/gosnowflake'
)

# MFA handling
mcp_github_search_code(
    query='passcode OR mfaToken repo:snowflakedb/gosnowflake'
)

Session Management

# Session handling
mcp_github_search_code(
    query='snowflakeConn OR renewSession repo:snowflakedb/gosnowflake'
)

# Heartbeat implementation
mcp_github_search_code(
    query='heartbeat OR keepAlive repo:snowflakedb/gosnowflake'
)

# Token management
mcp_github_search_code(
    query='sessionToken OR masterToken repo:snowflakedb/gosnowflake'
)

OCSP Issues

# OCSP implementation
mcp_github_get_file_contents(
    owner="snowflakedb", repo="gosnowflake", path="ocsp.go"
)

# Certificate validation
mcp_github_search_code(
    query='verifyPeerCertificate OR checkOCSPStatus repo:snowflakedb/gosnowflake'
)

# OCSP cache
mcp_github_search_code(
    query='ocspResponseCache repo:snowflakedb/gosnowflake'
)

Read the full file on GitHub · 267 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. 3d ago First seen · 267 lines · 1,564 tokens per session scan A 7bd51fdfd4d7

Subscribe to this mod's changes

go is a cursor rule published in the GitHub repository sfc-gh-cconner/support-rules-mcp (0 stars, last pushed 10mo ago), licensed Apache-2.0. It adds 1,564 tokens to every session, about $0.0078 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.