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Juan Torchia7h ago • 8 min read
System prompts for production agents: the format that survived 3 redesigns
A system prompt isn't documentation for the model — it's a contract. After several redesigns, I land...
#english#typescript#produccion#anthropic
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Tamil Selvan3d ago • 2 min read
I built toklock — the only Anthropic rate-limit proxy that queues requests instead of crashing your agents
The Problem I was building Visibrand — an AI SaaS company managed entirely by 11...
#claude#agents#opensource#anthropic
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FlareCanary6d ago • 4 min read
Claude Opus 4 and Sonnet 4 retire June 15 — your `claude-opus-4-0` alias is about to start failing
On April 14, 2026, Anthropic deprecated claude-opus-4-20250514 and claude-sonnet-4-20250514. Both...
#claude#anthropic#llm#deprecation
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LayerZero1d ago • 13 min read
Claude Opus 4.8 didn't raise the price. It raised the default. Here's what `effort=high` does to your bill.
Anthropic shipped Opus 4.8 at the same $5/$25 as 4.7 and called fast mode "3x cheaper." Both are tru...
#claudecode#ai#anthropic#agents
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pengspirit2d ago • 3 min read
6 of 6 official MCP servers cluster at 56–60/100 on schema-description density
After ten days of running the v1.1.0 publishability rubric against every MCP server I can find on np...
#mcp#anthropic#apidesign#opensource
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Muhammad Moeed6d ago • 3 min read
Claude Agent SDK vs Vercel AI SDK 6 — which to pick in 2026
The Claude Agent SDK and Vercel AI SDK 6 both build production agents in 2026, but they pick differe...
#ai#anthropic#vercel#agents
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Ravi Patel4d ago • 8 min read
Anthropic Prompt Caching: Real Numbers From 330 Production Calls
Real first-party data: Anthropic prompt caching cut Citare's AI bill 25-35% on parsing-heavy workloa...
#anthropic#promptcaching#llminfrastructure#finops
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Harsh Rastogi23h ago • 8 min read
Claude Opus 4.8 Is Here: Honesty Gains, Dynamic Workflows, and a 2.5 Faster Fast Mode
Anthropic shipped Claude Opus 4.8 on May 28, 2026. SWE-Bench Pro jumps from 64.3% to 69.2%, Fast Mod...
#ai#claude#anthropic#llm
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Patrick Hughes4h ago • 4 min read
Claude Opus 4.8: What Actually Changed for AI Agent Builders
Claude Opus 4.8 dropped May 28, 2026. Same price as 4.7, higher SWE-bench scores, and a model that f...
#aiagents#claude#anthropic#agenticcoding
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Max Quimby3d ago • 9 min read
Claude for Small Business: 382K Day-One Buyer's Guide
Inside Anthropic's 15-workflow + 15-skill SMB bundle: what's in it, where the 31 number comes from, ...
#ai#agents#anthropic#smb
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Marcus Rowe6h ago • 8 min read
Claude Opus 4.8 Review: The Dynamic Workflow Tool Changes What's Possible for AI Agents
Anthropic dropped Opus 4.8 just 41 days after Opus 4.7 — and the new 'dynamic workflow' tool that le
#claude#anthropic#aimodels#llm
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Peremptory2d ago • 3 min read
Karpathy Joined Anthropic to Train Claude Using Claude
Andrej Karpathy joined Anthropic's pretraining team in May 2026. The specific job: use Claude to acc...
#anthropic#pretraining#talent#research
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JessYT6d ago • 3 min read
PwC Is Rolling Out Claude Code to Hundreds of Thousands of Staff
Anthropic and PwC announced an expanded partnership on May 14. Claude Code and Cowork become standar...
#claudecode#anthropic#pwc#enterpriseadoption
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Joske Vermeulen11h ago • 6 min read
AI Dev Weekly #12: Opus 4.8 Drops, Anthropic Hits $965B, Chinese AI Goes 99% Cheaper, Microsoft Builds Its Own Coding Model
AI Dev Weekly is a Thursday series where I cover the week's most important AI developer news, with m...
#aidevweekly#claude#anthropic#deepseek
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syncore37m ago • 4 min read
How to Build a Production-Ready Claude Chatbot in Python
Anthropic's Claude 3.5 Sonnet has set a new benchmark for intelligence, speed, and...
#python#anthropic#claude#ai
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JessYT6d ago • 4 min read
Anthropic Now Holds the SDK Tooling Behind OpenAI Too — What the Stainless Deal Means
Anthropic acquired Stainless, the SDK auto-generation startup also used by OpenAI, Google, and Cloud...
#anthropic#stainless#sdk#mcp
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JessYT6d ago • 4 min read
Claude Agent SDK Gets Separate Billing on June 15 — D-28
Anthropic splits Claude Agent SDK billing into a separate pool on June 15. claude -p, GitHub Actions...
#claudeagentsdk#claudecode#anthropic#automation
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JessYT6d ago • 4 min read
Claude Can Now Reach Your Internal Database: MCP Tunnels Launch
Anthropic shipped two new security features for Claude Managed Agents — MCP Tunnels and Self-Hosted ...
#claudecode#mcp#anthropic#managedagents
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Gabriel Anhaia5d ago • 7 min read
Streaming Tool Calls with Anthropic's API: The Buffer Pattern Nobody Documents
Streaming tool_use blocks arrive as fragmented input_json deltas. Here's the 40-line buffer pattern ...
#ai#llm#anthropic#python
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Jangwook Kim10h ago • 9 min read
Claude Opus 4.8 Dynamic Workflows: 1,000 Parallel Agents and Fast Mode in Practice
A candid technical breakdown of Claude Opus 4.8's Dynamic Workflows and Fast Mode. Architecture, rea...
#claude#aiagents#anthropic
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Jangwook Kim6d ago • 10 min read
Code with Claude 2026: Managed Agents, Dreaming & AWS
Full developer recap of Code with Claude 2026: Dreaming, Outcomes, multiagent orchestration, Agent V...
#anthropic#claude#managedagents#developerconference
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Nicolas Dabene22h ago • 4 min read
More Than Prompts: 5 Revelations About Claude Skills That Will Change How You Work
If you regularly use an AI like Claude, you’re probably familiar with this frustration: having to...
#claude#skills#anthropic#prompting
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Icarax2d ago • 9 min read
Anthropic Releases New Claude Sandbox, Security Guidance Plugin
The New Wave of AI Security: Anthropic's Claude Sandbox and Security Guidance Plugin As I delved...
#anthropic#ai#technology#machinelearning
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Jangwook Kim3d ago • 10 min read
Claude MCP Tunnels: Private MCP Access for Agents
A developer guide to Claude MCP Tunnels, with local sandbox evidence for hostname routing, deny-by-d...
#claude#anthropic#mcp#managedagents
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