How do you actually build an effective harness with Claude? We had Thariq (@trq212) from Anthropic at Navigate 2026 to talk about "Unhobbling Claude", the difficulties and processes on how to build agents and harnesses.

Stagehand can use Stripe's new WebMCP tools in checkout pages. Run to see what WebMCP connectors a page exposes. With Stripe, you can use Stagehand to add items to cart and complete the checkout with native tools.

Browserbase (@browserbase) is now available in Merge Agent Handler. Agents can fetch a page, search the web, or hand a plain-English task to a browser agent that runs on its own. Check it out:

Your agent can trade. Your agent can pay. But who is your agent? Join us tomorrow, Sept 18 at 3pm ET for a Space on AiFi: Agentic Identity. w/ @World_ID, @browserbase, @marco_derossi, @programmer & @Coinbase Set a reminder ↓

we built blazing fast computer/browser use with Jev + @Stagehanddev. this task cost $0.001 and executed at near instant speed (in a remote browser btw) the loop: observe the page, send a11y tree as state + actions as questions, Jev decides the next action, then Stagehand executes it.

Jev is incredibly fast at making split-second decisions, so i raced it against Luna on a Wikipedia sprint. To go from Lionel Messi --> Sam Altman Jev just took 9.7 seconds, while Luna took 20.4 seconds -- at one-third the cost! Super fast browsers running on @browserbase, video at actual speed.

you can build a price-monitoring tool on @browserbase in <5 minutes using fetch w proxies running this for 3 products costs roughly $1.50 a day if i price-check every 15 minutes.

LangChain's CEO says they built their gateway a year too late, and it's still costing them. I sat down with Harrison Chase, Co-Founder & CEO of LangChain, to talk about what's changed since LangChain started as a side project in 2022, why sub-agents rarely work the way people expect, and why LangChain now runs its own hiring, content, and coding work through internal agents in Slack. 00:00 Why "I use agents for everything" is a red flag in an interview 01:21 How LangChain started as a fall 2022 side project 05:18 From LangSmith to LangGraph: rebuilding as the ground kept shifting 09:06 The gateway LangChain built a year too late 13:23 Code mode: why agents writing code beats human-style tools 19:04 Should the agent run inside the sandbox, or call it as a tool? 28:31 The agent identity problem: whose credentials does it use? 45:43 Running LangChain's own GTM, content, and coding agents in Slack 48:34 The AI slop problem, and why they built a Slack emoji for it The full pod is also available on YouTube, Apple Podcasts, or Spotify.

Muse Spark 1.3 from @Meta tops the charts in our Browser Agent benchmarks using the @mastra agent harness. In this harness, Muse outperforms Opus 5 in cost, speed, and accuracy.

It's Navigate week! Browserbase is hosting Navigate this Thursday (Sept 10) in SF. People are flying in from across the US to discuss the future of agents and computer use. Listen to speakers from @stripe, @vercel, @AnthropicAI, and more. Seats are running low. If you want to join the conversation on the future of agents, registration officially closes tomorrow.

Excited to announce we've been recognized as a 2026 IA40 winner for the second year in a row. The IA40 recognizes the 40 most important private companies in applied AI. Thank you, Madrona, AWS Startups, Microsoft, Google for Startups, NYSE, Delta Air Lines, and McKinsey & Company for the recognition.

OpenAI's own research says 80% of US GDP could be automated by agents today. So why isn't it? @swyx joined me on Navigators to break down what's actually holding back the adoption of agents (and it's not the models). 00:41 The three acts of the AI boom, and what act we're in now 05:11 Pre-training, mid-training, post-training, explained 10:12 Agent labs vs model labs: Cursor, Sierra, and domain bets 15:01 Why 80% of GDP could be automated, and what's stopping it 16:40 The chip and memory shortage nobody's talking about 19:11 Why "diffusion is cope" split the AI industry 20:48 What's next after the AI IPOs Watch the full conversation on Navigators, also on YouTube, Spotify, and Apple Podcasts.

my @bot can access websites that yours can't. most of the internet traffic is going to be AI but not all websites are built to handle bot traffic. so I gave my bot a @browserbase verified browser to access the entire internet.

Agents need their own identity to do real work on the web. We partnered with @tryramp to automate our event logistics workflow. Our agent logs into sites with a Browserbase Context, downloads receipts, and submits them via the Ramp CLI.

one of the best things about @bot is that it automates a whole bunch of boring work for me but the in-app VM browser gets blocked by a ton of sites, so we built a desktop app to proxies your traffic through a @browserbase verified browser. now my bot has trusted access to every website it couldn't get to before.

Navigate is two weeks out and the full agenda is live. @howietl, Founder & CEO, Hyperagent @swyx, Curator, AI Engineer & Latent Space Ivy Lee, VP Product, CMS Agentic Commerce, Visa Vic Klein, AI Researcher, Lovable @joaomdmoura, Founder & CEO, CrewAI @MattHrkal, Product Engineer, Duvo Registration link below.

BREAKING: I'm hosting a fireside chat w/ John @collision at *Navigate* on Sept 10 in SF Navigate is @browserbase's conference on what it takes to run AI agents in production. We'll get into: › Stripe's stance on AI › What agents their building › The future of fintech We go on at 4pm!  Sign up: