https://setuagent.com/blog/ Practical guides on agentic AI and harness engineering. en https://setuagent.com/blog/agentic-workflows-vs-autonomous-agents/https://setuagent.com/blog/agentic-workflows-vs-autonomous-agents/Tue, 29 Sep 2026 09:00:00 GMTWorkflowsAgentic workflows vs autonomous agents: compare determinism, flexibility, cost and failure handling, and learn when a fixed chain with LLM steps wins. https://setuagent.com/blog/evaluating-agents-with-tools/https://setuagent.com/blog/evaluating-agents-with-tools/Tue, 15 Sep 2026 09:00:00 GMTHarness engineeringA practical guide to evaluating tool-using AI agents: task suites, mocked vs real tools, fixtures, outcome and trajectory checks, flaky runs and release gates. https://setuagent.com/blog/oauth-for-ai-agents/https://setuagent.com/blog/oauth-for-ai-agents/Fri, 04 Sep 2026 09:00:00 GMTSecurity and controlHow to use OAuth safely with AI agents: authorization code with PKCE, least-privilege scopes, refresh rotation, token storage, revocation and reauth flows. https://setuagent.com/blog/tool-calling-failure-modes/https://setuagent.com/blog/tool-calling-failure-modes/Fri, 28 Aug 2026 09:00:00 GMTAgent engineeringTwelve tool-calling failure modes, from hallucinated arguments to retry storms and prompt injection, each with its symptom and a harness-level fix. https://setuagent.com/blog/human-approval-for-ai-agents/https://setuagent.com/blog/human-approval-for-ai-agents/Thu, 20 Aug 2026 09:00:00 GMTSecurity and controlHow to design human approval for AI agents: risk tiers, previews of the exact action, expiry, safe retries, fewer alerts, an audit trail and undo. https://setuagent.com/blog/context-engineering-for-agents/https://setuagent.com/blog/context-engineering-for-agents/Thu, 13 Aug 2026 09:00:00 GMTAgent engineeringContext engineering for AI agents: select what goes in the window, compact history, trim tool results, use sub-agents and order prompts so caching works. https://setuagent.com/blog/designing-tool-schemas-for-agents/https://setuagent.com/blog/designing-tool-schemas-for-agents/Thu, 06 Aug 2026 09:00:00 GMTAgent engineeringDesign tool schemas for AI agents: naming, descriptions as prompts, enums, idempotency and helpful errors, with a before and after JSON schema example. https://setuagent.com/blog/mcp-explained-for-builders/https://setuagent.com/blog/mcp-explained-for-builders/Thu, 30 Jul 2026 09:00:00 GMTAgent engineeringMCP (Model Context Protocol) explained for builders: how clients and servers exchange tools, transports, auth, session URL risks, context bloat and versioning. https://setuagent.com/blog/harness-engineering-layers/https://setuagent.com/blog/harness-engineering-layers/Tue, 21 Jul 2026 09:00:00 GMTHarness engineeringHarness engineering covers seven layers around an LLM agent: tools, context, memory, permissions, the loop, evaluation and observability. What each one does. https://setuagent.com/blog/what-is-an-agent-harness/https://setuagent.com/blog/what-is-an-agent-harness/Tue, 14 Jul 2026 09:00:00 GMTHarness engineeringAn agent harness is everything around the model: tools, context, memory, permissions and the loop. Learn what it does and why it decides if an agent works.