Atlas / MCP servers / akzar1el / mcp-gsc

mcp-gscSAFE

mcp/akzar1el/mcp-gsc

Google Search Console MCP server for Claude, Cursor, ChatGPT, and any MCP client. Query clicks, impressions, average position, URL inspection, sitemaps, and eligible indexing workflows. Run locally with npm or self-host on Cloudflare Workers. Google OAuth, no API keys. By digestseo.com.

Verdict
SAFE
Grade
B
Trust score
89 /100
Exposed tools
23 18r · 2w · 3d
Transport
streamable-http
License
MIT
Stars
5
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

[](LICENSE) [](https://modelcontextprotocol.io) [](https://registry.modelcontextprotocol.io/v0/servers?search=io.github.AKzar1el/mcp-gsc) [](https://github.com/AKzar1el/mcp-gsc/actions/workflows/ci.yml) [](https://www.npmjs.com/package/@digestseo/mcp-gsc) [](https://glama.ai/mcp/servers/AKzar1el/mcp-gsc)

Part of the [DigestSEO](https://digestseo.com/) suite of open-source SEO tools.

The self-hosting launcher is available as `@digestseo/mcp-gsc`:

npx -y @digestseo/mcp-gsc

The npm launcher starts a loopback-only Streamable HTTP Worker on 127.0.0.1 (port 8080 by default); it is not a stdio MCP process. You can run the npx command from any directory because the launcher resolves its bundled Worker configuration from the installed package. Clients that launch the package should connect to http://127.0.0.1:8080/mcp after supplying the Google OAuth and token-encryption environment variables described in SETUP.md. The launcher exits before starting Wrangler if `GOOGLE_CLIENT

Read from source at commit f075fd97fb51OBSERVED · 2026-10-11
02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.

claude-code (npm)
claude mcp add mcp-gsc --env GOOGLE_CLIENT_SECRET=${GOOGLE_CLIENT_SECRET} --env TOKEN_ENCRYPTION_KEY=${TOKEN_ENCRYPTION_KEY} -- npx -y @digestseo/[email protected]
03

Exposed tools (23)

18 read · 2 write · 3 destructive. Blast radius: 3 tools can delete or overwrite — an agent that can be talked into calling a tool can be talked into calling this one.

ToolRiskDescription
analytics.compareread
analytics.queryread
indexing.list_pagesread
indexing.removedestructive
indexing.requestread
indexing.statusread
insights.cannibalizationread
insights.content_decayread
insights.page_queriesread
insights.query_pagesread
insights.quick_winsread
reports.weekly_digestread
server.capabilitiesread
sitemaps.deletedestructive
sitemaps.getread
sitemaps.listread
sitemaps.submitwrite
sites.addwrite
sites.deletedestructive
sites.getread
sites.listread
urls.inspectread
urls.inspect_manyread
04

Trust audit

SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codePASS
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfaceWARN
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
declared (1 observation(s))
Network
declared (5 observation(s))
Shell
none-observed
Dependencies
not all pinned
Secrets in source
none-found

Findings (16)

MEDIUMFilesystem / path · mcp.destructive_tools · CWE-22, CWE-59
indexing.remove, sitemaps.delete, sites.delete
Why it matters. 3 tool(s) can delete or overwrite
Fix. prefer a read-only mode or scoped tokens; the page states the blast radius
LOWInventory / provenance · inv.hidden_file · CWE-1104
.dev.vars.example
.dev.vars.example
Why it matters. hidden member outside the usual dotfiles
Fix. review its purpose
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
tests/worker/glama-inspection.test.ts:3
import worker from '../../src/entrypoint';
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
tests/worker/glama-inspection.test.ts:4
import { type Env } from '../../src/index';
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
tests/worker/oauth-discovery.test.ts:4
import worker from '../../src/entrypoint';
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
tests/worker/oauth-discovery.test.ts:5
import { GOOGLE_TOKEN_URL, GOOGLE_USERINFO_URL } from '../../src/google';
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
tests/worker/oauth-discovery.test.ts:6
import { type Env } from '../../src/index';
LOWNetwork egress · net.raw_ip · CWE-200, CWE-319
README.md:25
The npm launcher starts a loopback-only **Streamable HTTP** Worker on `127.0.0.1` (port `8080` by default); it is not a stdio MCP process. You can run the `npx` command from any directory because the
LOWNetwork egress · net.raw_ip · CWE-200, CWE-319
README.md:44
http://127.0.0.1:8080/mcp
LOWNetwork egress · net.raw_ip · CWE-200, CWE-319
README.md:52
claude mcp add --transport http gsc http://127.0.0.1:8080/mcp
LOWNetwork egress · net.raw_ip · CWE-200, CWE-319
README.md:58
codex mcp add gsc --url http://127.0.0.1:8080/mcp
LOWNetwork egress · net.raw_ip · CWE-200, CWE-319
README.md:94
**ChatGPT** — ChatGPT cannot connect directly to this loopback `127.0.0.1` endpoint. For private/local use, create an OpenAI **Secure MCP Tunnel**, then run `tunnel-client` on the same machine as the
LOWObfuscation / stealth · obf.decode_call · CWE-506, CWE-94
src/crypto.ts:2
const binary = atob(b64);
LOWSupply chain · supply.unpinned · CWE-829, CWE-1357
package.json
@cloudflare/workers-oauth-provider, agents, wrangler, zod, @cloudflare/vitest-plugin, @cloudflare/workers-types, tsx, typescript
Why it matters. 9 dependency range(s) float
Fix. pin exact versions or ship a lockfile
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
CONTRIBUTING.md:42
This repository is the **self-hostable core**: Google OAuth, encrypted refresh-token storage, and an MCP tool suite with read and write Google Search Console operations, plus an on-demand weekly diges
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
README.md:108
| **`server.capabilities`** | Read | List every tool this server exposes and report local Google credential state. `connected` means a stored refresh credential is present; the response also exposes `
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine

Gates applied: no_behavioural_pass.

Audited 2026-10-11 · audit v0.4.1 · source sha f075fd97fb51full audit observations/trust-audit/mcp-server/akzar1el__mcp-gsc.json · Report an issue / request a re-scan
05

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-11f075fd97fb51SAFEB89first audit
06

Questions

What is the mcp-gsc MCP server?

Google Search Console MCP server for Claude, Cursor, ChatGPT, and any MCP client. Query clicks, impressions, average position, URL inspection, sitemaps, and eligible indexing workflows. Run locally with npm or self-host on Cloudflare Workers. Google OAuth, no API keys. By digestseo.com.

What tools does mcp-gsc expose?

23 in total: 18 read-only, 2 that write, and 3 that can delete or overwrite (indexing.remove, sitemaps.delete, sites.delete). Every one is listed on this page with its risk.

Is mcp-gsc safe to connect to an agent?

The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B. Separately from the audit: 3 of its tools can destroy data, so scope the token you give it to what you actually need.

What credentials does mcp-gsc need?

It reads GOOGLE_CLIENT_SECRET, MCP_ACCESS_TOKEN and TOKEN_ENCRYPTION_KEY from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.

How does mcp-gsc run?

It speaks streamable-http, so it runs as a service you connect to over the network. It is published on npm as @digestseo/mcp-gsc at 0.4.36.

How current is this page?

The grade is for one exact copy of the source (f075fd97fb51), read on 2026-10-11. The repository is watched and re-audited when it changes.

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