●MODEL — Claude Opus 4.8 lands, improving coding, agentic, and reasoning over 4.7 at the same price●CODE — Opus 4.8's Fast mode runs at 2.5x speed and is now three times cheaper than earlier models●CODE — Auto-mode command classification expands, with denial tracking and live bash path autocomplete●ENTERPRISE — Connector permissions in custom roles let admins control which tools each role can use●TEAM — Tag Claude directly in Slack and hand off tasks while you focus elsewhere●MCP — MCP servers now show startup auth notices, making connection status easier to track●MODEL — Claude Opus 4.8 lands, improving coding, agentic, and reasoning over 4.7 at the same price●CODE — Opus 4.8's Fast mode runs at 2.5x speed and is now three times cheaper than earlier models●CODE — Auto-mode command classification expands, with denial tracking and live bash path autocomplete●ENTERPRISE — Connector permissions in custom roles let admins control which tools each role can use●TEAM — Tag Claude directly in Slack and hand off tasks while you focus elsewhere●MCP — MCP servers now show startup auth notices, making connection status easier to track

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Claude API¹ tool use¹ vision¹ token optimization¹

⬡ API & SDK/2026-06-29Advanced

Let Claude Actually See the Images Your Tools Return — Use Image Blocks in tool_result and Cut Tokens by Roughly 10x

Stuffing a base64 string into a tool_result makes the same image cost roughly 10–20x more tokens. Here is how to return it as an image content block instead, with SDK code, a token-cost estimate, and the gotchas I hit in production.