AI News

The latest from the AI and MCP ecosystem, curated daily.

Server Instructions: Giving LLMs a user manual for your MCP server

MCP Official BlogNov 3, 2025

Server Instructions: Giving LLMs a user manual for your MCP server

An underused MCP protocol feature gets a spotlight: server instructions let you give the LLM a structured user manual for your server — explaining what tools do, when to use them, and how to combine them effectively. The post shows how well-written server instructions dramatically improve tool call accuracy without any prompt engineering on the client side.

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Building AI agents for financial services

Claude BlogOct 30, 2025

Building AI agents for financial services

Anthropic covers practical patterns for deploying Claude-based agents in financial services: document processing, compliance checks, customer support automation, and multi-step research workflows. The post addresses the specific trust and auditability requirements that make fintech agent deployments more complex than typical use cases. Useful for teams building regulated-industry agents.

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Using Codex for education at Dagster Labs

OpenAI Developer BlogOct 27, 2025

Using Codex for education at Dagster Labs

Dagster Labs shares how they use Codex across their open-source projects to accelerate documentation — generating docs from code, translating content across formats, and measuring doc completeness automatically. A practical case study showing Codex applied to developer tooling maintenance rather than greenfield code generation.

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Beyond permission prompts: making Claude Code more secure and autonomous

Anthropic EngineeringOct 20, 2025

Beyond permission prompts: making Claude Code more secure and autonomous

Claude Code gained filesystem and network sandboxing, letting it run autonomously with fewer permission interruptions while remaining safe. The sandboxing isolates risky operations so Claude can proceed confidently without asking the user about every file write or network call. A key step in making agentic coding tools both safer and less annoying to use.

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Claude Code on the web

Claude BlogOct 20, 2025

Claude Code on the web

Anthropic launched Claude Code on the web, letting users delegate coding tasks directly from the browser without a local CLI install. Tasks run on Anthropic-managed cloud infrastructure, making it easy to tackle bug backlogs and routine fixes without setting up a local environment. Now in beta as a research preview.

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How Codex ran OpenAI DevDay 2025

OpenAI Developer BlogOct 10, 2025

How Codex ran OpenAI DevDay 2025

OpenAI used Codex internally to build experiences, demos, and products for their DevDay 2025 event — eating their own cooking at scale. The post reveals which parts of the event infrastructure were Codex-generated and the workflows they used. Interesting as a signal for what Codex can reliably ship in a high-stakes, time-constrained environment.

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Claude and Slack

Claude BlogOct 1, 2025

Claude and Slack

Claude is now natively integrated with Slack, allowing teams to get help directly in channels and threads without leaving their workspace. You can also connect your Slack workspace to Claude.ai so it can search conversations and pull relevant context when needed. A significant step for enterprise teams already living in Slack.

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Effective context engineering for AI agents

Anthropic EngineeringSep 29, 2025

Effective context engineering for AI agents

Anthropic shares practical techniques for managing what goes into an agent's context window — what to include, what to summarise, what to drop, and how to structure information so agents reason more reliably. Context engineering is increasingly recognised as a core skill for agent developers, and this is one of the clearest practical guides on the topic.

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Update on the Next MCP Protocol Release

MCP Official BlogSep 26, 2025

Update on the Next MCP Protocol Release

The MCP team shares timelines and priorities for the next spec version — covering what features are slated, what's been deferred, and how the community can influence what gets included. Useful context for developers planning integrations or building on features that depend on upcoming spec changes.

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Why we built the Responses API

OpenAI Developer BlogSep 22, 2025

Why we built the Responses API

OpenAI explains the design rationale behind the Responses API — how it unlocks persistent reasoning, hosted tools, and multimodal workflows that the Chat Completions API couldn't cleanly support. The post covers the architectural decisions and use cases it was designed to enable for GPT-5. The canonical reference for understanding why the Responses API exists.

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A postmortem of three recent issues

Anthropic EngineeringSep 17, 2025

A postmortem of three recent issues

Anthropic published a transparent technical postmortem on three bugs that intermittently degraded Claude's responses — explaining what happened, why each took time to diagnose and fix, and what engineering changes resulted. Rare public transparency from an AI lab on production reliability issues. Useful reading for teams thinking about AI system reliability.

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Developer notes on the Realtime API

OpenAI Developer BlogSep 12, 2025

Developer notes on the Realtime API

OpenAI's engineering notes on recent Realtime API updates — covering improvements to speech-to-speech latency, turn detection, interruption handling, and session management. Targeted at developers already building with the Realtime API who want to understand the subtle behaviour changes in recent model snapshots.

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Writing effective tools for agents — with agents

Anthropic EngineeringSep 11, 2025

Writing effective tools for agents — with agents

Anthropic used Claude agents to help design and iterate on tool definitions for other agents — effectively dog-fooding agent tooling. The post covers what makes a tool definition good (clear name, typed params, explicit error cases) and how using agents to write tools surfaces issues that humans miss. Meta but practical.

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Introducing the MCP Registry

MCP Official BlogSep 8, 2025

Introducing the MCP Registry

The MCP Registry launched in preview — an open catalog and API for discovering publicly available MCP servers. Provides a standardised way for clients to discover servers, check metadata, and verify compatibility without relying on community-maintained lists. The infrastructure layer that makes the MCP ecosystem more navigable as it grows.

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Announcing the Official PHP SDK for MCP

MCP Official BlogSep 5, 2025

Announcing the Official PHP SDK for MCP

The official PHP SDK for MCP is now generally available, built in collaboration with the PHP Foundation and Symfony. Brings idiomatic PHP support to MCP server development, opening the protocol to the large PHP developer community. Part of MCP's push to have official SDKs across all major languages.

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Piloting Claude in Chrome

Claude BlogAug 25, 2025

Piloting Claude in Chrome

Anthropic is piloting a native Claude integration inside Chrome, bringing AI assistance directly into the browser without switching tabs or apps. The pilot explores how Claude can help with web research, form-filling, summarisation, and contextual tasks as users browse. An early look at where browser-native AI assistance is heading.

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Evolving OAuth Client Registration in MCP

MCP Official BlogAug 22, 2025

Evolving OAuth Client Registration in MCP

A deep dive into how MCP handles OAuth 2.1 client registration — the mechanism that lets MCP clients and servers establish trust without a pre-existing relationship. Explains the two core challenges (dynamic registration, trust bootstrapping) and the design choices made to solve them in a way that scales to the open MCP ecosystem. Essential for developers building MCP clients or auth-enabled servers.

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MCP Prompts: Building Workflow Automation

MCP Official BlogAug 4, 2025

MCP Prompts: Building Workflow Automation

A practical tutorial on using MCP prompts and resource templates to build workflow automation — walking through a meal planning example that demonstrates how prompts can chain resources and tools into reusable, composable workflows. Prompts are an underused MCP primitive and this is one of the clearest guides to their practical value.

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Building to Last: A New Governance Model for MCP

MCP Official BlogJul 31, 2025

Building to Last: A New Governance Model for MCP

The MCP project introduced its formal governance model: Specification Enhancement Proposals (SEPs), a defined maintainer structure, and a community-driven process for evolving the protocol. This post marked MCP's transition from an Anthropic-led project to a community-governed open standard, laying the groundwork for the later Linux Foundation donation.

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How Anthropic teams use Claude Code

Claude BlogJul 24, 2025

How Anthropic teams use Claude Code

A behind-the-scenes look at how Anthropic’s own teams use Claude Code day-to-day: debugging production issues, navigating unfamiliar codebases, building internal automation tools, and accelerating code review. The post doubles as a practical guide with real patterns teams have found most effective. Worth reading for anyone trying to get more from Claude Code.

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