The key line is the nested URL: {{{FromExp=fromJSON(fRes).author_key[0]}}} is an expr-lang expression evaluated against the current item (fRes) — parse it, take the first author key, splice it into the URL. Anything expr-lang can compute can become part of a request: pick a field, concatenate, add an offset, branch on a condition. And notice the output shape: each book keeps its own scalar fields while the... - Source: dev.to / 19 days ago

With OIDC enabled you can leverage fine-grained access control through GroupBinding custom resources. Use the Expr language to bind the groups claim in a user's JWT to specific modules or providers. The moduleResources field also supports glob patterns:. - Source: dev.to / 3 months ago

Expressions are evaluated with expr-lang, a Go expression evaluator. Variables come from the threaded environment:. - Source: dev.to / 6 months ago

If you're building AI agents that execute code, you've probably heard of E2B. It's an awesome platform for running AI agent code in secure sandboxes. But there's a catch: you're locked into their cloud. - Source: dev.to / 14 days ago

With some fear that corporate data could be revealed by messy AI applications, sandboxing was high on the agenda, and Matt Brockman, an AI engineer at enterprise sandboxing business E2B, explained that there really wasn’t much to be frightened of. - Source: dev.to / about 1 month ago

E2B is the sandbox. It gives the agent its own computer to do work. - Source: dev.to / about 2 months ago

If you've used E2B, Daytona, Modal sandboxes, or Cloudflare Sandboxes, the shape is familiar: REST API, Python and JS SDKs, exec / files / snapshot primitives. Here's what the Python SDK looks like:. - Source: dev.to / 3 months ago

E2B | SF, Prague, Remote | Eng, GTM, and Operations | https://e2b.dev/ E2B is building infrastructure for AI agents, and has quickly become the open source standard for agentic workflow sandboxes. Customers include Perplexity, Groq, Manus, and more. We are experiencing explosive growth and hiring for several technical and non-technical functions as we prepare to 3x the team this year. - Distributed Systems Engineer. - Source: Hacker News / 3 months ago