← The evidence ledger
Evidence row 42660
Observed , by baseline/1.
- Kind
- listing
- About
- source_record mcp_registry:io.github.mcp-z/mcp-gmail
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- c41832fe09afb4584938f1c888013b7e10f546ad6789c126b12bb7ef9510a246
- Leaf
- 0xa3528ec9ab507c596bd7efd04f29c56ef0e34bc7d9cb9019f0517e9266e9986c
What was observed
{
"endpoints": [
[
"web",
"https://github.com/mcp-z/mcp-gmail"
]
],
"name": "Gmail",
"owner_address": null,
"raw": {
"_meta": {
"io.modelcontextprotocol.registry/official": {
"isLatest": true,
"publishedAt": "2026-10-12T04:44:26.369699Z",
"status": "active",
"statusChangedAt": "2026-10-12T04:44:26.369699Z",
"updatedAt": "2026-10-12T04:44:26.369699Z"
}
},
"server": {
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"description": "Gmail integration with OAuth authentication, message search, batch operations, and Sheets export",
"name": "io.github.mcp-z/mcp-gmail",
"packages": [
{
"environmentVariables": [
{
"description": "Google OAuth client ID (required for OAuth authentication modes)",
"isRequired": true,
"name": "GOOGLE_CLIENT_ID",
"placeholder": "123456789-abcdefghijk.apps.googleusercontent.com"
},
{
"description": "Google OAuth client secret (optional for public clients)",
"isSecret": true,
"name": "GOOGLE_CLIENT_SECRET",
"placeholder": "GOCSPX-abcdefghijklmnop"
},
{
"description": "Path to service account JSON key file (required for service-account auth mode)",
"name": "GOOGLE_SERVICE_ACCOUNT_KEY_FILE",
"placeholder": "/path/to/service-account-key.json"
},
{
"choices": [
"loopback-oauth",
"service-account"
],
"description": "Authentication mode",
"name": "AUTH_MODE",
"placeholder": "loopback-oauth",
"value": "loopback-oauth"
},
{
"default": "false",
"description": "Disable browser auto-open, return auth URL instead (true/false)",
"name": "HEADLESS",
"placeholder": "false"
},
{
"description": "OAuth redirect URI (optional, default: ephemeral loopback)",
"name": "REDIRECT_URI",
"placeholder": "http://localhost:{PORT}/oauth/callback"
},
{
"description": "Resource store URI for CSV export files (file://)",
"name": "RESOURCE_STORE_URI",
"placeholder": "file://~/.mcp-z/mcp-gmail/files",
"value": "file://~/.mcp-z/mcp-gmail/files"
},
{
"description": "HTTP server port (overrides --port)",
"name": "PORT",
"placeholder": "3000"
},
{
"description": "Base URL for HTTP transport (used for OAuth/DCR endpoints and file links)",
"name": "BASE_URL",
"placeholder": "http://localhost:{PORT}"
},
{
"choices": [
"debug",
"info",
"warn",
"error"
],
"description": "Logging level",
"name": "LOG_LEVEL",
"placeholder": "info",
"value": "info"
}
],
"identifier": "@mcp-z/mcp-gmail",
"packageArguments": [
{
"choices": [
"loopback-oauth",
"service-account"
],
"description": "Authentication mode",
"name": "--auth",
"type": "named"
},
{
"description": "Disable browser auto-open, return auth URL instead",
"name": "--headless",
"type": "named"
},
{
"description": "OAuth redirect URI (default: ephemeral loopback)",
"name": "--redirect-uri",
"type": "named"
},
{
"description": "Path to service account JSON key file (overrides GOOGLE_SERVICE_ACCOUNT_KEY_FILE env var)",
"name": "--service-account-key-file",
"type": "named"
},
{
"description": "Override resource store URI for CSV export files",
"name": "--resource-store-uri",
"type": "named"
},
{
"description": "Override base URL for HTTP transport (used for OAuth/DCR endpoints and file links)",
"name": "--base-url",
"type": "named"
},
{
"choices": [
"debug",
"info",
"warn",
"error"
],
"description": "Override logging level",
"name": "--log-level",
"type": "named"
}
],
"registryType": "npm",
"runtimeArguments": [
{
"name": "-y",
"type": "named"
}
],
"runtimeHint": "npx",
"transport": {
"type": "stdio"
},
"version": "2.3.3"
},
{
"environmentVariables": [
{
"description": "Google OAuth client ID (required for OAuth authentication modes)",
"isRequired": true,
"name": "GOOGLE_CLIENT_ID",
"placeholder": "123456789-abcdefghijk.apps.googleusercontent.com"
},
{
"description": "Google OAuth client secret (optional for public clients)",
"isSecret": true,
"name": "GOOGLE_CLIENT_SECRET",
"placeholder": "GOCSPX-abcdefghijklmnop"
},
{
"description": "Path to service account JSON key file (required for service-account auth mode)",
"name": "GOOGLE_SERVICE_ACCOUNT_KEY_FILE",
"placeholder": "/path/to/service-account-key.json"
},
{
"choices": [
"loopback-oauth",
"service-account",
"dcr"
],
"description": "Authentication mode",
"name": "AUTH_MODE",
"placeholder": "loopback-oauth",
"value": "loopback-oauth"
},
{
"default": "false",
"description": "Disable browser auto-open, return auth URL instead (true/false)",
"name": "HEADLESS",
"placeholder": "false"
},
{
"description": "OAuth redirect URI (optional, default: ephemeral loopback)",
"name": "REDIRECT_URI",
"placeholder": "http://localhost:{PORT}/oauth/callback"
},
{
"choices": [
"self-hosted",
"external"
],
"default": "self-hosted",
"description": "Dynamic Client Registration mode",
"name": "DCR_MODE",
"placeholder": "self-hosted"
},
{
"description": "External verification endpoint URL (required for external DCR mode)",
"name": "DCR_VERIFY_URL",
"placeholder": "https://example.com/verify"
},
{
"default": "file://~/.mcp-z/mcp-gmail/dcr.json",
"description": "DCR client storage URI (for self-hosted DCR mode)",
"name": "DCR_STORE_URI",
"placeholder": "file://~/.mcp-z/mcp-gmail/dcr.json"
},
{
"description": "Resource store URI for CSV export files (file://)",
"name": "RESOURCE_STORE_URI",
"placeholder": "file://~/.mcp-z/mcp-gmail/files",
"value": "file://~/.mcp-z/mcp-gmail/files"
},
{
"description": "HTTP server port (overrides --port)",
"name": "PORT",
"placeholder": "3000"
},
{
"description": "Base URL for HTTP transport (used for OAuth/DCR endpoints and file links)",
"name": "BASE_URL",
"placeholder": "http://localhost:{PORT}"
},
{
"choices": [
"debug",
"info",
"warn",
"error"
],
"description": "Logging level",
"name": "LOG_LEVEL",
"placeholder": "info",
"value": "info"
}
],
"identifier": "@mcp-z/mcp-gmail",
"packageArguments": [
{
"description": "HTTP server port",
"name": "--port",
"type": "named",
"value": "9002"
},
{
"choices": [
"loopback-oauth",
"service-account",
"dcr"
],
"description": "Authentication mode",
"name": "--auth",
"type": "named"
},
{
"description": "Disable browser auto-open, return auth URL instead",
"name": "--headless",
"type": "named"
},
{
"description": "OAuth redirect URI (default: ephemeral loopback)",
"name": "--redirect-uri",
"type": "named"
},
{
"description": "Path to service account JSON key file (overrides GOOGLE_SERVICE_ACCOUNT_KEY_FILE env var)",
"name": "--service-account-key-file",
"type": "named"
},
{
"choices": [
"self-hosted",
"external"
],
"description": "DCR mode",
"name": "--dcr-mode",
"type": "named"
},
{
"description": "External verification endpoint URL (required for external DCR mode)",
"name": "--dcr-verify-url",
"type": "named"
},
{
"description": "DCR client storage URI (for self-hosted DCR mode)",
"name": "--dcr-store-uri",
"type": "named"
},
{
"description": "Override resource store URI for CSV export files",
"name": "--resource-store-uri",
"type": "named"
},
{
"description": "Override base URL for HTTP transport (used for OAuth/DCR endpoints and file links)",
"name": "--base-url",
"type": "named"
},
{
"choices": [
"debug",
"info",
"warn",
"error"
],
"description": "Override logging level",
"name": "--log-level",
"type": "named"
}
],
"registryType": "npm",
"runtimeArguments": [
{
"name": "-y",
"type": "named"
}
],
"runtimeHint": "npx",
"transport": {
"type": "streamable-http",
"url": "http://localhost:{PORT}/mcp"
},
"version": "2.3.3"
}
],
"title": "Gmail",
"version": "2.3.3",
"websiteUrl": "https://github.com/mcp-z/mcp-gmail#readme"
}
},
"source": "mcp_registry",
"summary": "Gmail integration with OAuth authentication, message search, batch operations, and Sheets export"
}What the leaf hashes
{"body":"c41832fe09afb4584938f1c888013b7e10f546ad6789c126b12bb7ef9510a246","id":42660,"kind":"listing","method":"baseline/1","observed_us":1793025401402452,"prev":null,"subject":"mcp_registry:io.github.mcp-z/mcp-gmail","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
- 0xa3531ece1d3475edf97577a01ed24bd241bb2e1e8acd30f13042cb5cb5924547
- 0x2b9a63a7d30dcfc60b67228a3e2bfdf2f318c98217a47378df2158156defe632
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- 0x2abdad43a86c9a4958a75cc199166b4ce0cca908edb77fd2eb2b7b1cce7bd621
- 0xed9150efbc878fa83b958755c51844e15ae978bb98ad0f45eb92ef188635c543
- 0x20f023ec5d24a958beb5b4c9b5bbbf30c2ef64686a891b1f42f8796ada07c820
- 0xe1e655176585c108de07ee5275187ca18a939b5011139ac7156c03cc263ea9dd
- 0x87d5545da92ebbaddf1466ac58c8a0f4f583cd830df19243c7cf6fe4a41c936d
- 0x7fbb97fc75b5046e2d155caf9d940b742af355ae952b98e9021a7fb3d4e3d539
- 0xbf9e8e8193260b284eff6ae5de9bd74a29a95af639484d57bcbf0408a7dd8030
- 0xf02ec0f13d875e636ca9d24097cc2a185cdb09429c8c4ade598b8089f42bb140
- 0x19537c574979327583a539261287714af2eee831125de819abab0f155acd3a75
- 0xc34c13c58ba9c342ea1b833ac1882a4aea22777c4fd1092b2f83d3bac6b9f845
- 0x428106f4ae4ec142f17aebf6fa50935242f8d3f1c211cf95d6351d03d11da2b7
- 0x62a900133713919f4eed33d8336876b7a6d538233b8a4f3ed03b29aa44f5bad0
- 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
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- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae