Claude Security scans now run on Claude Mythos 5
Today's top 20 insights for PM Builders, ranked by relevance from X, YouTube, and LinkedIn.
Claude Security scans now run on Claude Mythos 5
#1 đť•Ź
Claude Security scans now run on Claude Mythos 5, which is available in public beta for all Claude Enterprise customers with no separate model access needed.
Also covered by: @Claude
#3 đť•Ź
OpenAI announced it is cutting API and credit pricing for GPT-5.6 Sol by over 20% for the next three months, linking the reduction to improving efficiency while advancing capabilities.
Also covered by: @OpenAI, @Cognition
#4 đť•Ź
NVFP4 and DFlash2 recipes for Qwen3.8-27B were added to the SGLang cookbook, and the post thanks the SGLang project for its support.
#5 ▶️
I Tested HubSpot's New MCP Server
SyntaxGTM
HubSpot’s remote MCP server at mcp.hubspot.com was connected through an MCP Auth App to list, create, and update CRM contacts, while deletion remained unavailable.
- HubSpot has two MCP servers: the local Developer MCP server for HubSpot CMS and app development, and the remote HubSpot MCP server for CRM data access.
- The remote MCP added the
manage CRM objectstool, enabling creation and updates for CRM objects such as contacts and deals; it supports read, create, and edit operations but not deletion. - An MCP Auth App requires an app ID, client ID, and redirect URL; after authorization, Claude used the HubSpot connector’s
get contacts/search CRM objectscapability to return contacts in roughly 5–6 seconds, including when using Claude Haiku.
#6 đť•Ź
NVIDIA AI shared a deep dive into how an AI agent stack fits together, covering the components that guide agent behavior and the infrastructure that enforces security boundaries.
Also covered by: @NVIDIA AI
#7 đť•Ź
Thinking Machines made Inkling available for free on OpenRouter for the next few weeks, starting at the time of the post and limited to agentic harnesses. It plans to use data disassociated from accounts to improve Inkling’s agentic performance.
#8 in
Guillermo Rauch recapped that an unidentified group repeatedly ran is-agentic against is-agentic.com until it scored 100/100, a process that led the group to close several gaps. He said is-agentic.com offers audits with 100+ checks, visualizations of agents using a site, one-click prompts to fix problems, and a CLI for agents.
Also covered by: @Guillermo Rauch
#9 đť•Ź
Santiago recapped deploying a training pipeline for a company on AWS that took around 20 hours to train, then discovering within 10 minutes of an optimization request months later that its 4-GPU instance used only 1 GPU. The company had paid for 3 unused GPUs for months, a mistake that GPU-utilization monitoring—never above 25%—would have exposed.
#10 đť•Ź
Jason Zhou shared “Claude for finding influencers,” reporting that more than 1,000 influencers were sourced for $0.025. He said Claude or Codex can be connected to @treg_ai.
#11 đť•Ź
Madhu Guru shared a laddered eval strategy tailored to each enterprise’s use cases, spanning multiple points on the cost-and-realism spectrum. In part 4, Guru highlights continually refreshed hill-climb long evals, regression checks, safety-focused smoke tests, and realistic but less controlled launch evals.
#12 đť•Ź
Santiago shared truefoundry’s GitHub repository for an open-source, vendor-neutral no-code agent builder that can be hosted anywhere, use any model, and let users configure the entire agent loop without writing code.
#13 ▶️
Greg Isenberg
Billy Howell runs The Arlington Bagel, a Thursday local newsletter for 6,000 Arlingtonians, with a Grockbot agent team consisting of a chief of staff, research, sales, Beehive, and other specialized agents.
- Billy Howell keeps one business per Grockbot account to avoid context bloat and token consumption; he pays $200 for a separate Grockbot account dedicated to a Shopify experiment.
- His four-week Grockbot workflow is: build the initial team in week one, execute without adding agents or tinkering in week two, add or remove agents for real gaps in week three, and add automated routines in week four.
- The Arlington Bagel research agent checks sources twice weekly and creates Notion cards; Make.com formats newsletter blurbs, Beehive sends the issue each Thursday, and the Gmail-connected sales agent found a local bagel-shop sponsorship lead.
#14 đť•Ź
Thariq shared commands for trying the eli5 plugin through the Claude plugin marketplace, noting that there is debate over whether to make it an official plugin.
Also covered by: @Thariq
#15 đť•Ź
claire vo đź–¤ demonstrated that an unidentified system could be prompted in one shot to email a package of emails to an arbitrary address, including her work email and her husband, with zero pushback.
#16 đť•Ź
Jason Zhou shared that Treg can give CodeX free access to 2,600+ APIs. Try it at https://treg.to.
#17 đť•Ź
Madhu Guru shared “How to build great evals - part 5,” advising readers not to reduce results from a complex evaluation suite to one single score. Guru said the next post would follow the next day and invited readers to submit evaluation questions for future posts.
#18 đť•Ź
Philipp Schmid shared that Gemini 3.1 Flash Live is ranked #1 in the new Artificial Analysis Speech Agent Arena.
#19 đť•Ź
DeepLearning.AI shared Andrew Ng’s list of fundamental skills for building and deploying AI applications: LLM foundations, grounding models with data, agentic systems, evaluation-driven development, production operations, and machine learning foundations. The post describes the linked resource as the second installment of the AI Engineering Skills Map.
#20 đť•Ź
Google Research announced Mobility-Embedded POIs (ME-POIs), a mobility-informed framework that improves text-based place representations derived by language models and allows AI models to understand places’ aggregate activity rhythms over time.