Screentack blog

Capture, annotation & AI context

Practical writing on giving your AI coding agent eyes, picking capture tools without a subscription, and why annotation is becoming non-negotiable.

August 6, 20265 min read

Agents Get a Manifest, Teammates Get a Picture

A screenshot sent to Claude and a screenshot sent to Slack should not be the same payload. Screentack sends structured context to agents and a clean image to people — automatically, from one capture.

July 30, 20265 min read

Codex CLI + Mac Screen Capture

Codex CLI speaks MCP over stdio and remote HTTP, and takes image input. Here is how to wire a Mac screen-capture server to it and send annotated regions instead of raw screenshots.

July 23, 20266 min read

GitHub Copilot in VS Code: Screenshots Through MCP

VS Code's MCP support went GA in 1.102, and Copilot tool results render image thumbnails. Here is how to get an annotated Mac screenshot into Copilot — and the one MCP feature it does not support.

July 16, 20266 min read

Giving Cursor Visual Context on a Mac

Cursor can see images — including ones returned by MCP tools. Here is how to get an annotated Mac screenshot in front of it, and why a labelled region beats a raw screenshot.

July 9, 20266 min read

How to Give Claude Code Screenshots on macOS

Claude Code can read your screen if you give it the right context. Two ways on macOS: paste an annotated capture, or let it capture on its own over MCP. Setup, limits, and when to use each.

June 8, 20266 min read

How to Validate Your AI Agent's Plan Before It Writes Code

The cheapest change is the one you make before the code exists. Here's how to have your AI agent sketch its plan on screen, correct it visually, and only then let it build.

June 8, 20268 min read

Bidirectional Visual Feedback for AI Coding Agents

Feeding screenshots to your AI agent is one direction. The missing half: the agent draws its plan back on your screen and you correct it before it builds. Here's the full loop.

June 8, 20267 min read

Annotate, Don't Regenerate: The Token Cost of Validating a Plan

Letting an AI agent build a real page just to check the layout is the expensive way to iterate. Validating its plan with annotations first can cost ~2x fewer tokens. Here's the model.

June 8, 20266 min read

Why Screenshots Aren't Enough: Your Agent Should Annotate Back

Feeding screenshots to your AI coding agent is only half the loop. The missing half: the agent draws its plan back on your screen so you can correct it before it writes code.

June 4, 20266 min read

Why AI Coding Agents Burn Tokens on Visual Bugs

Visual bugs are the most expensive failure mode for Claude Code and Cursor — every 'no, the blue one' round-trip re-sends your whole context. Here's how to cut the token churn.

June 3, 20266 min read

CleanShot X vs Snagit (2026): Which Mac Screenshot Tool?

CleanShot X vs Snagit, compared for Mac in 2026 — price, platform, annotation, OCR, and video. Plus the one job neither was built for: feeding screenshots to an AI.

June 3, 20266 min read

MCP Screenshot Tool: Capture Any Mac App for Your AI

Give Claude Code and Cursor eyes on any native Mac app, privately. An on-device MCP screenshot tool with region crops, blur redaction, and a spatial manifest.

June 2, 20266 min read

LazyScreenshots vs Screentack for AI Coding

Both are $29 one-time Mac tools that one-keystroke-send a screenshot to your AI chat. Screentack goes further — a spatial manifest, MCP capture, and screen recording. Here's how to choose.

May 31, 20265 min read

Why Screen Recordings Need Annotations

A raw screen recording shows what happened but not what matters. Annotations turn passive video into signal — for teammates and, increasingly, for AI agents.

May 31, 20266 min read

CleanShot X vs Screentack: Which for Developers?

Both are one-time-purchase macOS capture tools. CleanShot X is the polished all-rounder; Screentack is built to feed AI coding agents. Here's how to choose.

May 31, 20268 min read

Best Loom Alternatives in 2026 (No Subscription)

Tired of Loom's per-seat pricing and cloud-only recordings? Here are the best one-time-purchase, privacy-first screen recording alternatives for developers in 2026.

May 31, 20267 min read

How to Give Your AI Coding Agent Visual Context

Coding agents are blind to your screen. Here's how to feed Claude Code, Cursor, and Copilot pixel-perfect screenshots with the spatial metadata they can actually reason about.