Model Context Protocol (MCP) Server Directory

On July 30, 2026 OpenAI cut GPT-5.6 Luna API pricing by 80% to $0.20 per million input tokens, spread a mid-tier drop across the lineup, and left the flagship price untouched. The model market has formally split into three tiers. Here is how to buy them.

On August 8, 2026 OpenAI halted development of Astra — its next frontier model — after internal testing showed it could autonomously develop zero-day exploits and complete end-to-end cyberattacks. The same system solved ten long-unsolved math problems. The pause is a landmark: the first voluntary stop of the agent era over cyber capability.

AI agents don't log in like people. With non-human identities outnumbering humans 45:1 and 40% of live MCP servers running without authentication, teams need an identity control plane — not another spreadsheet.

In 2026, agent context windows are the biggest hidden cost line in production AI. A compression layer that squeezes tool outputs and RAG chunks by 60-95% before they reach the model returns the same answers for a fraction of the tokens.

EU AI Act Article 50 disclosure enforcement went live August 10, 2026 and Minnesota's deepfake law is active with fines up to $500,000. Production agents that generate or publish content now need a compliance gate, not a prompt instruction.

Research from Paderborn University's CIE shows a diagnostic-aware agent that checks data quality, seasonality and stationarity before choosing a forecast model beats zero-shot tool selection. Build that exact workflow with an MCP forecasting server in 2026.

Google's A2A protocol passed 150 supporting organizations under Linux Foundation governance in 2026. Here is how to build a production agent-federation workflow that discovers remote agents, delegates long-running tasks, and audits every cross-org interaction.

NVIDIA's open-weight agentic flagship pairs a 30B-total / 3B-active A3B hybrid MoE with a 1M-token context window and ships through OpenRouter, build.nvidia.com, NeMo Switchyard, and SageMaker JumpStart. This deep dive covers the hybrid MoE trade-offs, KV cache and RoPE engineering behind the long context, benchmark positioning, and a six-step enterprise evaluation playbook.

Claude Sonnet 5's intro window ends August 31, 2026 — $2/M input becomes $3/M on September 1 — while its new tokenizer emits up to 35% more tokens per equivalent text, compounding effective cost per 1,000 words to roughly 2.03x. This analysis provides the before-and-after unit economics and the routing, compression, caching, and renegotiation playbook.

A research technique reported August 11, 2026 decodes hidden chain-of-thought reasoning blocks across Anthropic, OpenAI, and Google models — 315,320 blocks scraped, 367 PII artifacts and 182 credentials recovered, and prompt injections that persist invisibly inside agentic rollouts. This analysis re-frames the reasoning channel as a first-class security boundary and lays out the five-layer defense stack.