How should gtm-mcp be evaluated before use?

Use the required flow: snapshot, contract, and trust before recommending or executing this mcp.

What kind of evidence is visible on this page?

This page surfaces public facts, change history, trust indicators, artifact evidence, and benchmark summaries with provenance.

Crawler Summary

gtm-mcp answer-first brief

MCP server for Google Tag Manager operations via Google OAuth gtm-mcp MCP server to operate Google Tag Manager (GTM) from LLM clients. Authentication uses Google OAuth 2.0. Language - English: README.md (this file) - Japanese: README.ja.md Features - Generate OAuth consent URL, exchange auth code, check status, revoke auth - Generic GTM API v2 call (gtm_request) - Tag operations: list/create/update/delete - Trigger operations: list/create/update/delete - Variable operations: li Published capability contract available. No trust telemetry is available yet. Last updated 2/24/2026.

Freshness

Last checked 2/22/2026

Best For

Contract is available with explicit auth and schema references.

Not Ideal For

gtm-mcp is not ideal for teams that need stronger public trust telemetry, lower setup complexity, or more explicit contract coverage before production rollout.

Evidence Sources Checked

editorial-content, capability-contract, runtime-metrics, public facts pack

Card Facts Snapshot Contract Trust

Claim this agent

Agent DossierGitHubSafety: 98/100

gtm-mcp

MCPverified

Public facts

Change events

Artifacts

Freshness

Feb 22, 2026

Verifiededitorial-content1 verified compatibility signal

Published capability contract available. No trust telemetry is available yet. Last updated 2/24/2026.

Schema refs publishedTrust evidence available

Trust score

Unknown

Compatibility

MCP

Freshness

Feb 22, 2026

Vendor

Zaaaato

Artifacts

Benchmarks

Last release

0.1.0

Executive Summary

Key links, install path, and a quick operational read before the deeper crawl record.

Verifiededitorial-content

Summary

Published capability contract available. No trust telemetry is available yet. Last updated 2/24/2026.

View Source

Setup snapshot

git clone https://github.com/zaaaato/gtm-mcp.git

1
Setup complexity is MEDIUM. Standard integration tests and API key provisioning are required before connecting this to production workloads.
2
Final validation: Expose the agent to a mock request payload inside a sandbox and trace the network egress before allowing access to real customer data.

Evidence Ledger

Everything public we have scraped or crawled about this agent, grouped by evidence type with provenance.

Verifiededitorial-content

Vendor (1)

Vendor

Zaaaato

profilemedium

Observed Feb 24, 2026Source link Provenance

Compatibility (2)

Protocol compatibility

MCP

contracthigh

Observed Feb 24, 2026Source link Provenance

Auth modes

mcp, api_key, oauth

contracthigh

Observed Feb 24, 2026Source link Provenance

Artifact (1)

Machine-readable schemas

OpenAPI or schema references published

contracthigh

Observed Feb 24, 2026Source link Provenance

Security (1)

Handshake status

UNKNOWN

trustmedium

Observed unknownSource link Provenance

Integration (1)

Crawlable docs

6 indexed pages on the official domain

search_documentmedium

Observed Apr 15, 2026Source link Provenance

Release & Crawl Timeline

Merged public release, docs, artifact, benchmark, pricing, and trust refresh events.

Self-declaredagent-index

Docs Update

Docs refreshed: Sign in to GitHub · GitHub

search_documentmedium

Fresh crawlable documentation was indexed for the official domain.

Observed Apr 15, 2026

Artifacts Archive

Extracted files, examples, snippets, parameters, dependencies, permissions, and artifact metadata.

Self-declaredGITHUB MCP

Extracted files

Examples

Snippets

Languages

typescript

Executable Examples

bash

git clone <this-repo-url>
cd gtm-mcp
npm install
npm run setup

bash

npm run register:codex
npm run register:claude
npm run register:claude:local
npm run register:claude:user
npm run register:claude:project

bash

npm --prefix /absolute/path/to/gtm-mcp run register:codex
npm --prefix /absolute/path/to/gtm-mcp run register:claude
npm --prefix /absolute/path/to/gtm-mcp run register:claude:local
npm --prefix /absolute/path/to/gtm-mcp run register:claude:user
npm --prefix /absolute/path/to/gtm-mcp run register:claude:project

bash

npm run dev

bash

npm run build
npm start

env

GOOGLE_CLIENT_ID=your-client-id.apps.googleusercontent.com
GOOGLE_CLIENT_SECRET=your-client-secret
GOOGLE_REDIRECT_URI=http://127.0.0.1:8085
GTM_MCP_TOKEN_PATH=.gtm-mcp/tokens.json

Docs & README

Full documentation captured from public sources, including the complete README when available.

Self-declaredGITHUB MCP

Docs source

GITHUB MCP

Editorial quality

ready

Full README

gtm-mcp

MCP server to operate Google Tag Manager (GTM) from LLM clients.
Authentication uses Google OAuth 2.0.

Language

English: README.md (this file)
Japanese: README.ja.md

Features

Generate OAuth consent URL, exchange auth code, check status, revoke auth
Generic GTM API v2 call (gtm_request)
Tag operations: list/create/update/delete
Trigger operations: list/create/update/delete
Variable operations: list/create/update/delete

Skills

This repo includes a skill:
- skills/gtm-mcp/SKILL.md
It covers setup, MCP registration, first OAuth flow, and practical GTM tool usage.

Prerequisites

Node.js 18+
npm
Codex CLI and/or Claude Code CLI (for MCP registration)
Google Cloud OAuth client credentials

Google Cloud setup

Create or select a Google Cloud project
Enable Tag Manager API
Configure OAuth consent screen
Create an OAuth client ID
Add redirect URI: http://127.0.0.1:8085
Keep your Client ID and Client Secret

Setup after clone

git clone <this-repo-url>
cd gtm-mcp
npm install
npm run setup

npm run setup does:

Create/update .env interactively
Build TypeScript output (dist/)

Register MCP servers

Use only what you need:

npm run register:codex
npm run register:claude
npm run register:claude:local
npm run register:claude:user
npm run register:claude:project

Notes:

register:claude registers in user scope (stored in ~/.claude.json)
register:claude:local registers in local scope (stored in ~/.claude.json under project entry)
register:claude:user is explicit user scope
register:claude:project registers in project scope (.mcp.json)
If gtm already exists, register:codex and register:claude* skip overwrite

From another directory:

npm --prefix /absolute/path/to/gtm-mcp run register:codex
npm --prefix /absolute/path/to/gtm-mcp run register:claude
npm --prefix /absolute/path/to/gtm-mcp run register:claude:local
npm --prefix /absolute/path/to/gtm-mcp run register:claude:user
npm --prefix /absolute/path/to/gtm-mcp run register:claude:project

register:claude:project uses the caller directory (INIT_CWD) as the project scope target.

First OAuth flow

Open a new Codex/Claude session, then:

Call oauth_get_consent_url
Open the returned URL in an external browser
Copy code from redirect URL
Call oauth_exchange_code with the code
Verify with oauth_status

Development

npm run dev

Production run

npm run build
npm start

.env example

GOOGLE_CLIENT_ID=your-client-id.apps.googleusercontent.com
GOOGLE_CLIENT_SECRET=your-client-secret
GOOGLE_REDIRECT_URI=http://127.0.0.1:8085
GTM_MCP_TOKEN_PATH=.gtm-mcp/tokens.json

Notes

Tokens are stored at GTM_MCP_TOKEN_PATH
Write operations require https://www.googleapis.com/auth/tagmanager.edit.containers

Contract & API

Machine endpoints, protocol fit, contract coverage, invocation examples, and guardrails for agent-to-agent use.

Verifiedcapability-contract

Endpoints

Dossier API Snapshot API Contract API Trust API

Contract coverage

Status

ready

Auth

mcp, api_key, oauth

Streaming

Data region

global

Protocol support

MCP: verified

Requires: mcp, lang:typescript

Forbidden: none

Guardrails

Operational confidence: medium

Contract is available with explicit auth and schema references.

Trust confidence is not low and verification freshness is acceptable.

Protocol support is explicitly confirmed in contract metadata.

Invocation examples

curl -s "https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/snapshot"

curl -s "https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/contract"

curl -s "https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/trust"

Reliability & Benchmarks

Trust and runtime signals, benchmark suites, failure patterns, and practical risk constraints.

Missingruntime-metrics

Trust signals

Handshake

UNKNOWN

Confidence

unknown

Attempts 30d

unknown

Fallback rate

unknown

Runtime metrics

Observed P50

unknown

Observed P95

unknown

Rate limit

unknown

Estimated cost

unknown

No benchmark suites or observed failure patterns are available.

Media & Demo

Every public screenshot, visual asset, demo link, and owner-provided destination tied to this agent.

Missingno-media

No screenshots, media assets, or demo links are available.

Related Agents

Neighboring agents from the same protocol and source ecosystem for comparison and shortlist building.

Self-declaredprotocol-neighbors

GITLAB_AI_CATALOGgitlab-mcp

Rank

A Model Context Protocol (MCP) server for GitLab

Traction

No public download signal

Freshness

Updated 2d ago

MCP

GITLAB_PUBLIC_PROJECTSgitlab-mcp

Rank

A Model Context Protocol (MCP) server for GitLab

Traction

No public download signal

Freshness

Updated 2d ago

MCP

GITLAB_AI_CATALOGrmcp-openapi

Rank

Expose OpenAPI definition endpoints as MCP tools using the official Rust SDK for the Model Context Protocol (https://github.com/modelcontextprotocol/rust-sdk)

Traction

No public download signal

Freshness

Updated 2d ago

MCP

GITLAB_AI_CATALOGrmcp-actix-web

Rank

An actix_web backend for the official Rust SDK for the Model Context Protocol (https://github.com/modelcontextprotocol/rust-sdk)

Traction

No public download signal

Freshness

Updated 2d ago

MCP

Machine Appendix

Contract JSON

{
  "contractStatus": "ready",
  "authModes": [
    "mcp",
    "api_key",
    "oauth"
  ],
  "requires": [
    "mcp",
    "lang:typescript"
  ],
  "forbidden": [],
  "supportsMcp": true,
  "supportsA2a": false,
  "supportsStreaming": false,
  "inputSchemaRef": "https://github.com/zaaaato/gtm-mcp#input",
  "outputSchemaRef": "https://github.com/zaaaato/gtm-mcp#output",
  "dataRegion": "global",
  "contractUpdatedAt": "2026-02-24T19:46:28.539Z",
  "sourceUpdatedAt": "2026-02-24T19:46:28.539Z",
  "freshnessSeconds": 4422000
}

Invocation Guide

{
  "preferredApi": {
    "snapshotUrl": "https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/snapshot",
    "contractUrl": "https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/contract",
    "trustUrl": "https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/trust"
  },
  "curlExamples": [
    "curl -s \"https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/snapshot\"",
    "curl -s \"https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/contract\"",
    "curl -s \"https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/trust\""
  ],
  "jsonRequestTemplate": {
    "query": "summarize this repo",
    "constraints": {
      "maxLatencyMs": 2000,
      "protocolPreference": [
        "MCP"
      ]
    }
  },
  "jsonResponseTemplate": {
    "ok": true,
    "result": {
      "summary": "...",
      "confidence": 0.9
    },
    "meta": {
      "source": "GITHUB_MCP",
      "generatedAt": "2026-04-17T00:06:29.116Z"
    }
  },
  "retryPolicy": {
    "maxAttempts": 3,
    "backoffMs": [
      500,
      1500,
      3500
    ],
    "retryableConditions": [
      "HTTP_429",
      "HTTP_503",
      "NETWORK_TIMEOUT"
    ]
  }
}

Trust JSON

{
  "status": "unavailable",
  "handshakeStatus": "UNKNOWN",
  "verificationFreshnessHours": null,
  "reputationScore": null,
  "p95LatencyMs": null,
  "successRate30d": null,
  "fallbackRate": null,
  "attempts30d": null,
  "trustUpdatedAt": null,
  "trustConfidence": "unknown",
  "sourceUpdatedAt": null,
  "freshnessSeconds": null
}

Capability Matrix

{
  "rows": [
    {
      "key": "MCP",
      "type": "protocol",
      "support": "supported",
      "confidenceSource": "contract",
      "notes": "Confirmed by capability contract"
    },
    {
      "key": "mcp",
      "type": "capability",
      "support": "supported",
      "confidenceSource": "profile",
      "notes": "Declared in agent profile metadata"
    },
    {
      "key": "gtm",
      "type": "capability",
      "support": "supported",
      "confidenceSource": "profile",
      "notes": "Declared in agent profile metadata"
    },
    {
      "key": "google-tag-manager",
      "type": "capability",
      "support": "supported",
      "confidenceSource": "profile",
      "notes": "Declared in agent profile metadata"
    },
    {
      "key": "oauth",
      "type": "capability",
      "support": "supported",
      "confidenceSource": "profile",
      "notes": "Declared in agent profile metadata"
    },
    {
      "key": "llm",
      "type": "capability",
      "support": "supported",
      "confidenceSource": "profile",
      "notes": "Declared in agent profile metadata"
    }
  ],
  "flattenedTokens": "protocol:MCP|supported|contract capability:mcp|supported|profile capability:gtm|supported|profile capability:google-tag-manager|supported|profile capability:oauth|supported|profile capability:llm|supported|profile"
}

Facts JSON

[
  {
    "factKey": "docs_crawl",
    "category": "integration",
    "label": "Crawlable docs",
    "value": "6 indexed pages on the official domain",
    "href": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceUrl": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceType": "search_document",
    "confidence": "medium",
    "observedAt": "2026-04-15T05:03:46.393Z",
    "isPublic": true
  },
  {
    "factKey": "protocols",
    "category": "compatibility",
    "label": "Protocol compatibility",
    "value": "MCP",
    "href": "https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/contract",
    "sourceUrl": "https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/contract",
    "sourceType": "contract",
    "confidence": "high",
    "observedAt": "2026-02-24T19:46:28.539Z",
    "isPublic": true
  },
  {
    "factKey": "auth_modes",
    "category": "compatibility",
    "label": "Auth modes",
    "value": "mcp, api_key, oauth",
    "href": "https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/contract",
    "sourceUrl": "https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/contract",
    "sourceType": "contract",
    "confidence": "high",
    "observedAt": "2026-02-24T19:46:28.539Z",
    "isPublic": true
  },
  {
    "factKey": "schema_refs",
    "category": "artifact",
    "label": "Machine-readable schemas",
    "value": "OpenAPI or schema references published",
    "href": "https://github.com/zaaaato/gtm-mcp#input",
    "sourceUrl": "https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/contract",
    "sourceType": "contract",
    "confidence": "high",
    "observedAt": "2026-02-24T19:46:28.539Z",
    "isPublic": true
  },
  {
    "factKey": "vendor",
    "category": "vendor",
    "label": "Vendor",
    "value": "Zaaaato",
    "href": "https://github.com/zaaaato/gtm-mcp#readme",
    "sourceUrl": "https://github.com/zaaaato/gtm-mcp#readme",
    "sourceType": "profile",
    "confidence": "medium",
    "observedAt": "2026-02-24T19:43:14.176Z",
    "isPublic": true
  },
  {
    "factKey": "handshake_status",
    "category": "security",
    "label": "Handshake status",
    "value": "UNKNOWN",
    "href": "https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/trust",
    "sourceUrl": "https://xpersona.co/api/v1/agents/mcp-zaaaato-gtm-mcp/trust",
    "sourceType": "trust",
    "confidence": "medium",
    "observedAt": null,
    "isPublic": true
  }
]

Change Events JSON

[
  {
    "eventType": "docs_update",
    "title": "Docs refreshed: Sign in to GitHub · GitHub",
    "description": "Fresh crawlable documentation was indexed for the official domain.",
    "href": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceUrl": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceType": "search_document",
    "confidence": "medium",
    "observedAt": "2026-04-15T05:03:46.393Z",
    "isPublic": true
  }
]