claude-use-gemini-acp

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Delegate a sub-task to Gemini CLI via the Agent Client Protocol (ACP). Use this skill whenever you want to hand off work to Gemini — large-context summarization, Google Search grounding, tasks that exceed Claude's context window, or anything where Gemini's 1M-token window or real-time search gives an advantage. Also invoke when the user asks you to "ask Gemini", "check with Gemini", or "run this through Gemini". The script handles subprocess lifecycle and ACP session setup; you just provide the prompt and read stdout.

14installs

Sourcebaphomet480/claude-skills

Added on2026-05-14

NPX Install

npx skill4agent add baphomet480/claude-skills claude-use-gemini-acp

SKILL.md Content

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Claude → Gemini via ACP

Spawn a Gemini CLI subprocess in ACP mode, send a prompt, stream the response to stdout, and terminate cleanly. No persistent session — one prompt, one response.

When to use

The task requires more context than fits in Claude's window
You want real-time Google Search grounding
You want a second opinion from a different model
The user says "ask Gemini", "use Gemini for this", etc.

Setup (first use only)

bash

cd ~/.claude/skills/claude-use-gemini-acp/scripts
pnpm install

This installs

@agentclientprotocol/sdk

into the local

node_modules/

. Subsequent runs skip this step — pnpm caches the result.

Usage

bash

GEMINI_MODEL=gemini-2.5-pro \
TARGET_CWD=/path/to/project \
node ~/.claude/skills/claude-use-gemini-acp/scripts/gemini-delegate.mjs \
  "Summarize the architecture in ARCHITECTURE.md and list the top 3 risks"

The response streams to stdout as Gemini generates it. Capture it for use in your response:

bash

response=$(node ~/.claude/skills/claude-use-gemini-acp/scripts/gemini-delegate.mjs "your prompt")

Environment variables

Variable	Default	Description
`GEMINI_MODEL`	`gemini-2.5-pro`	Model to use
`GEMINI_CLI_VERSION`	`nightly`	gemini-cli package version ( `nightly` or a specific semver)
`TARGET_CWD`	current working dir	Working directory passed to the Gemini session

How it works

Spawns

pnpm dlx @google/gemini-cli@<version> --acp --yolo --model <model>

Connects via

@agentclientprotocol/sdk

's

ClientSideConnection

+

ndJsonStream

Sends
```
initialize
```
→
```
newSession
```
→
```
prompt
```
over the ACP session
Streams
```
agent_message_chunk
```
deltas to stdout as they arrive
Terminates the subprocess once the prompt response completes

The

--yolo

flag (

-y

) auto-approves all tool calls inside Gemini's session.

Prompt construction tips

Include all relevant context in the prompt string — this is a fresh session with no prior history
Reference files by absolute path if you want Gemini to read them (it can use its filesystem tools)
Keep prompts focused: one clear task per invocation
For multi-step work, do multiple sequential invocations rather than one sprawling prompt

Error handling

If the script exits non-zero, check stderr for:

```
pnpm dlx
```
download failures (network, auth)
Gemini auth errors (
```
gemini auth login
```
may be needed)
ACP initialization failures (version mismatch)

The script does not retry — if something fails, surface the error to the user and suggest re-running after fixing the root cause.

claude-use-gemini-acp

NPX Install

Tags

SKILL.md Content

Claude → Gemini via ACP

When to use

Setup (first use only)

Usage

Environment variables

How it works

Prompt construction tips

Error handling