What is add-gmail-tool?

A Gmail connection that gives the agent tools to search, read, draft, send, label, and manage email. Gmail is Google’s email service.

It connects Gmail to selected agent groups through OneCLI-managed authentication and exposes email and attachment operations.

It lets the agent work with email while keeping real OAuth credentials—the tokens that grant account access—outside the container.

How taslim/nanoclaw-gws-ea configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to taslim/nanoclaw-gws-ea. 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/taslim/nanoclaw-gws-ea/main/.claude/skills/add-gmail-tool/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/taslim/nanoclaw-gws-ea

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/skills/taslim/nanoclaw-gws-ea/add-gmail-tool/github.svg)](https://agentmods.dev/skills/taslim/nanoclaw-gws-ea/add-gmail-tool)

Your own site

<a href="https://agentmods.dev/skills/taslim/nanoclaw-gws-ea/add-gmail-tool"><img src="https://agentmods.dev/badge/skills/taslim/nanoclaw-gws-ea/add-gmail-tool/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/skills/taslim/nanoclaw-gws-ea/add-gmail-tool"><img src="https://agentmods.dev/badge/skills/taslim/nanoclaw-gws-ea/add-gmail-tool.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,739 The whole file, excluding the scripts and references it only reads on demand.

Security scan D 2 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	$0.00063	$0.03739
Opus 5	$0.00032	$0.01869
Sonnet 5	$0.00013	$0.00748
Haiku 4.5	$0.00006	$0.00374

Measured 11d ago against content hash b04465fda28d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade D, and why

add-gmail-tool scanned grade D with 2 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 11d 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

chmod 600 ~/.gmail-mcp/gcp-oauth.keys.json ~/.gmail-mcp/credentials.json

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

5. (Optional) `rm -rf ~/.gmail-mcp/` if no other host-side tool needs the stubs.

.claude/skills/add-gmail-tool/SKILL.md · 263 lines

How it starts

The opening of the file, as written. The whole thing — 263 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Add Gmail Tool (OneCLI-native)

This skill wires the @gongrzhe/server-gmail-autoauth-mcp stdio MCP server into selected agent groups. The MCP server reads stub credentials containing the onecli-managed placeholder; the OneCLI gateway intercepts outbound calls to gmail.googleapis.com and injects the real OAuth bearer from its vault.

Tools exposed (from [email protected], surfaced to the agent as mcp__gmail__<name>): search_emails, read_email, send_email, draft_email, delete_email, modify_email, batch_modify_emails, batch_delete_emails, download_attachment, list_email_labels, create_label, update_label, delete_label, get_or_create_label, list_filters, get_filter, create_filter, create_filter_from_template, delete_filter.

Why this pattern: v2's invariant is that containers never receive raw API keys — OneCLI is the sole credential path (see CHANGELOG v2.0.0). The stub-file pattern satisfies this: the container sees "onecli-managed" placeholders, the gateway swaps them in flight.

Phase 1: Pre-flight

Verify OneCLI has Gmail connected

onecli apps get --provider gmail

Expected: "connection": { "status": "connected" } with scopes including gmail.readonly, gmail.modify, gmail.send.

If not connected, tell the user:

Open the OneCLI web UI at http://127.0.0.1:10254, go to Apps → Gmail, and click Connect. Sign in with the Google account you want the agent to act as.

Verify stub credentials exist

ls -la ~/.gmail-mcp/gcp-oauth.keys.json ~/.gmail-mcp/credentials.json 2>&1

If both exist and contain "onecli-managed":

grep -l onecli-managed ~/.gmail-mcp/gcp-oauth.keys.json ~/.gmail-mcp/credentials.json

...skip to Phase 2.

If either file exists but does not contain onecli-managed, STOP and tell the user — these are real OAuth credentials from a previous non-OneCLI install. Back them up, then delete before proceeding. The OneCLI migration normally handles this; if it didn't, something is wrong.

Read the full file on GitHub · 263 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.

11d ago First seen · 263 lines · 63 tokens per session scan D b04465fda28d

Subscribe to this mod's changes

add-gmail-tool is a skill published in the GitHub repository taslim/nanoclaw-gws-ea (11 stars, last pushed 3mo ago), licensed MIT. It adds 63 tokens to every session and 3,739 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it D with 2 findings (asks for root, recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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nanoclaw-gws-ea: Skill for Claude Code