#MCP/Tool use

AILangChain's deepagents now supports dynamically loading tools when a skill is loaded, so skills requiring specific tools no longer need those tools always available. With OpenAI and Anthropic models, this can be done without breaking the prompt cache.

AIGitHub is bringing local models and sandboxed tools to GitHub Copilot, giving developers more choice and control over their workflows. The post links to a page with further details, but it does not specify particular models, features, or availability.

AILangChain says Managed Deep Agents v0.9 lets agents create their own reminders, follow-ups, and recurring tasks mid-conversation through a Schedules SDK. Per-run configuration lets users choose the model, skills, MCP servers, and sandbox for each run, so one deployment can serve multiple teams or repos. The update also adds Slack Reactions, where agents react to messages as soon as they start a run.

AIGoogle DevRel's James O'Reilly explains how Antigravity Agent Plugins expose local MCP server tools to the model, either eagerly as top-level functions or lazily through a call_mcp_tool proxy. Eager loading, set via "eager": true in mcp_config.json, avoids the discovery turn but adds fixed per-turn token overhead that can degrade reasoning with 100+ tools. Lazy loading is the plugin default and keeps baseline token use low, at the cost of an extra proxy hop and a higher chance of JSON quoting errors.

AIStacklok, founded by Kubernetes creators Craig McLuckie and Joe Beda, has released Mecatl, an open source cloud-native harness for coding agents on GitHub. Mecatl keeps the agent loop separate from the client, model provider, state store, and execution environment, and moves tool calling, session management, and memory into manageable systems. The article also covers ToolHive, an MCP platform, and an AI Gateway that is not yet open sourced, with a commercial enterprise control plane tying the pieces together.

AILauren Tan recommends new Grok Bot users first connect regularly used apps such as calendar, Slack, issue tracker, CRM, and Google Drive so the bot has work context and needed tools. She advises starting with one primary bot before adding specialized bots, which can be designed or chosen from the bot marketplace.

AIThe main post says the platform is starting to compete for the personal-agent entry point, with a hard fight expected. The quoted post claims Grok bot will use the best model for each task, drawing on Grok 4.7 or 4.6 and external services such as Opus 5.5, Midjourney, and Suno to build content or execute tasks.

AILangChain revamped skills support in Deep Agents with three changes: tools bound to a skill load only when the agent reads that skill, pinned skills are loaded before the next model call when a user requests them, and long-running threads can pick up new or changed skills without restarting. Each skill is a folder with a SKILL.md file, and only its name and description are in context until the agent reads the full instructions.

AIMastra Connect is a public beta that lets Mastra projects connect providers such as Linear, Notion, and Slack, giving agents and workflows ready-made tools. Connect launches with 23 providers, almost 900 tools, and 7 hosted MCP providers, and it is free to use on Mastra platform during beta. Developers can add connections via the CLI or dashboard, limit tools with glob filters, and call a provider's SDK directly with credential() when a tool is missing.

Why it matters: The post shows how connected services become agent tools, and how credentials and access limits are managed, which is useful for building agent workflows.

AILangChain released Managed Deep Agents v0.9 in Public Beta, adding a Schedules SDK, per-run agent configuration, and Slack reactions. Agents can create reminders, follow-ups, and recurring tasks mid-conversation, running as the requesting user and posting results back to the originating channel. Per-run configuration lets one deployment choose the model, instructions, skills, MCP servers, and sandbox based on the run's context, and Slack reactions are on by default with a 👀 emoji.

Why it matters: The release shows how one agent deployment can be configured per run by channel or repo, separating tool access from model instructions.

AIGoogle's Developer Knowledge API offers an official, programmatic source of Google Cloud, Firebase, and Android documentation for AI agents and developer tools, replacing web scraping with structured, Markdown-formatted results. The ecosystem includes a gcloud CLI surface, an agent skill that works with MCP-compatible tools, API Explorer, and client libraries for C#, Go, Java, Node.js and TypeScript, PHP, Python, and Ruby.

AIClaude Code v2.1.292 adds a --marketplace option to claude plugin install, which adds the marketplace if needed and then installs the plugin from it. The release also adds an effort parameter to the Agent tool and fixes several security issues, including permission prompts bypassed for network (UNC) file reads and a sandboxed read path that could return files outside approved access.

AISierra and Meta are developing Personal Agent Protocol, an open standard defining how personal agents interact with businesses, with industry partners including Genesys, Instinct, Rocket, Shopify, Stripe, and Walmart. The protocol uses OAuth sessions where consumers choose read-only or write access and companies choose whether agents reach them through websites, APIs via MCP and OpenAPI, or their own agents. The authors plan to publish the v0.1 specification later this month along with a reference implementation.

Why it matters: The post specifies how personal agents would authenticate and reach businesses through websites, APIs, or company agents, which matters for anyone building agent integrations.

AIGumloop's Agent Browsers let agents perform browser-based tasks without an MCP or API, with the browser running on Gumloop's infrastructure rather than the user's desktop. The feature includes built-in account management with a vault, persistent browser profiles, 1Password integration, live viewing, and session replays. Users can also reuse their workflows.

AILauren Tan describes using Grok Bot to connect apps like Slack, email, and CRM so it can gather context and decide what work to do. She also explains scheduled and event-triggered routines, plus handing engineering tasks to Cursor cloud agents, with a daily feedback-to-merge loop example.

AIAmpersand lets developers connect an AI agent to a customer's Salesforce by configuring object and field mappings. The platform then handles API calls, authentication, token refreshes, and retries, which the post presents as a major advantage given the difficulty of managing multiple Salesforce accounts.

AIAn unnamed developer has open-sourced OpenWork, a tool letting AI agents work directly on files on a user's computer. It supports cloud or local models and existing skills, plugins, and MCP servers.

AIEvery has launched the Every Agent, an agentic coworker that lives in Slack and helps teams delegate complex work and share AI experiments. It also sends personalized Frontier Alerts when new models or tools ship, and the company says it charges zero percent markup on tokens, so customers pay what Every pays.

AIClaude Code v2.1.290 adds serverToolUses to plugin turn.step results and agentId to tool.check hook events, so hooks can distinguish subagent permission checks. The release also adds a Deny button to the Claude apps gateway sign-in approval page, plus claude attach and claude logs accepting partial session names.

AIYuchen Jin argues computer-use agents will be AI's next major battleground because many digital tools lack useful APIs, while GUIs are a universal interface nearly all software exposes. He calls Codex Desktop with Astra the best computer-use agent he has tried so far.

AIEra, launched by Ofir Ehrlich's team, generates a complete simulated company spanning Salesforce, Slack, Jira, Zendesk, Gong, and Deel, plus cloud databases and storage. Agents interact with it through live MCP and API interfaces, and because Era generated the company, it knows the exact ground truth for testing and benchmarking. The post says the product is live today and free.

AIBruce Hopkins shows how to wrap an existing stock-data REST API, the Twelve Data API, in a Model Context Protocol (MCP) server so an MCP client can discover and call it. The demo uses Python with FastMCP, exposing current and historical stock-price functions as tools and resources with descriptive prompts. Developers can add an MCP interface around existing capabilities without replacing their underlying application logic.

AIFireworks AI has made DeepSeek V4.1 Flash available for training on its Dedicated Training API and Managed Training surfaces. The post positions the model as a strong base for agentic coding, terminal automation, and tool use, and notes it is cost-efficient to serve.

AIA tool can turn a one-line business description into a complete synthetic company spread across CRM, ticketing, Slack, files, emails, and call recordings. Developers can test agents against this connected data, then reset the company to its initial state and rerun the test when something breaks. The background post describes the product as Era, a free simulated enterprise that connects to Salesforce, Slack, Jira, Zendesk, Gong, and Deel through live MCP and API interfaces.

AICohere's North now links to everyday work apps including Slack, SharePoint, OneDrive, Outlook, Exchange, Jira, Linear, Notion, and GitHub. The post frames the integrations as a way to speed up everyday work.