What is mcp-gsc CLAUDE.md?

Project instructions for an MCP server that connects an agent to Google Search Console, a service reporting website search performance and indexing data.

Use them when developing or testing mcp-gsc, especially its search reports, sitemap, indexing, and optional write features.

They document how to build, test, authenticate, retry requests, and control tools that change data.

How pijusz/mcp-gsc configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to pijusz/mcp-gsc. 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/pijusz/mcp-gsc/master/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/pijusz/mcp-gsc

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/instructions/pijusz/mcp-gsc/claude-md/github.svg)](https://agentmods.dev/instructions/pijusz/mcp-gsc/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/pijusz/mcp-gsc/claude-md"><img src="https://agentmods.dev/badge/instructions/pijusz/mcp-gsc/claude-md/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/instructions/pijusz/mcp-gsc/claude-md"><img src="https://agentmods.dev/badge/instructions/pijusz/mcp-gsc/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 311 This file is loaded in full into every session.

When invoked 311 The same file — it is already loaded in full.

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	$0.00311	$0.00311
Opus 5	$0.00156	$0.00156
Sonnet 5	$0.00062	$0.00062
Haiku 4.5	$0.00031	$0.00031

Measured 8d ago against content hash 288e0990e484, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

mcp-gsc CLAUDE.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 8d 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.md · 30 lines

What it actually says

mcp-gsc

Google Search Console MCP server in Bun/TypeScript. See AGENTS.md for detailed guidelines.

Quick reference

Runtime: Bun (dev) / Node (built)
Entry: src/index.ts
Build: bun run build → mcp-gsc (standalone binary), bun run build:npm → dist/index.js
Test: bun test
API: Google Search Console API v1 (direct REST, no googleapis package)

Key patterns

All tools return { content: [{ type: "text", text }] } — MCP tool response format
fetchWithRetry in services/gsc-api.ts handles 429/5xx with exponential backoff
Tabular responses use markdown tables, capped at 100 rows default / 500 max
Write tools gated by GOOGLE_GSC_ENABLE_WRITES=true
Extended tools gated by GOOGLE_GSC_ENABLE_EXTENDED_TOOLS=true
Auth type auto-detected from credentials file (no AUTH_TYPE env var)
Property format auto-resolved via resolveProperty() — accepts bare domains

Prod testing (published package)

claude mcp add gsc --scope user --transport stdio \
  -e GOOGLE_GSC_CREDENTIALS_PATH=/abs/path/to/credentials.json \
  -- npx -y mcp-gsc@latest

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.

8d ago First seen · 30 lines · 311 tokens per session scan A 288e0990e484

Subscribe to this mod's changes

mcp-gsc CLAUDE.md is an instructions file published in the GitHub repository pijusz/mcp-gsc (1 stars, last pushed 1mo ago), licensed MIT. It adds 311 tokens to every session, about $0.0016 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.

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mcp-gsc: Instructions file for Claude Code