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Snapstack Server

bgaze/snapstack-server

Runs as a local daemon on 127.0.0.1:4123 to handle browser screenshots from a companion extension and expose them over MCP. You snap tabs from Chrome or Firefox, the extension POSTs them to the server, and they land as numbered WebP files in ~/.snapstack. Three tools: get_screenshots returns a manifest with paths and metadata (no base64), clear_screenshots deletes by number, and count_screenshots tells you what's waiting. Useful when you want to feed visual context into Claude without copy-pasting URLs or wrestling with vision API limits. The server auto-updates on restart and supports both HTTP and stdio transports, so it works with any MCP client.

GitHub stars
1
tools
3
transport
STDIO
last updated
Jun 9, 2026
View on GitHub

Tools

3 tools

Public tool metadata for what this MCP can expose to an agent.

get_screenshotsLists pending captures as a JSON manifest (stable number, absolute path, dimensions, metadata) — no image bytes, no deletion. Pass numbers (e.g. [1,3]) to list only those.

Lists pending captures as a JSON manifest (stable number, absolute path, dimensions, metadata) — no image bytes, no deletion. Pass numbers (e.g. [1,3]) to list only those.

No parameter schema in public metadata yet.

clear_screenshotsDeletes captures. Pass numbers to delete specific ones; omit to clear the whole stack. Numbering restarts at 01 once empty.

Deletes captures. Pass numbers to delete specific ones; omit to clear the whole stack. Numbering restarts at 01 once empty.

No parameter schema in public metadata yet.

count_screenshotsNumber of pending captures, without retrieving them.

Number of pending captures, without retrieving them.

No parameter schema in public metadata yet.

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Readme

SnapStack

CI License: MIT Node >= 18 MCP compatible 100% local npm version npm downloads Glama score

View the full README on GitHub

Details

Repository
github.com/bgaze/snapstack-server
Website
github.com/bgaze/snapstack-extension
Category
Web & Browser Automation
Package
snapstack-server
Transport
STDIO
Registry
MCP registry, active

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