https://akashpanchal.com I build production AI agents and document the hard engineering problems. Currently: Evercall — when an Australian emergency plumber can't answer, we book the job. en-us https://akashpanchal.com/articles/webrtc-for-voice-agents https://akashpanchal.com/articles/webrtc-for-voice-agents Sound is a 20ms clock. TCP was built for documents. This is a ground-up tour of WebRTC — sampling, RTP, ICE, jitter buffers — and why every serious voice agent ends up as a media participant, not a server behind a POST. Article Fri, 14 Aug 2026 00:00:00 GMT https://akashpanchal.com/tutorials/livekit-voice-agents https://akashpanchal.com/tutorials/livekit-voice-agents Phone agents need dates, room types, and callback numbers. The instinct is a CallState dataclass and next_question(). LiveKit Agents already solved that with AgentTask and TaskGroup — here's the hotel receptionist that shows how. Tutorial Sat, 08 Aug 2026 00:00:00 GMT https://akashpanchal.com/tutorials/build-a-harness-agent-from-scratch https://akashpanchal.com/tutorials/build-a-harness-agent-from-scratch Picture the demo — model, tools, while loop, done. Then someone refreshes the browser and it's gone. This tutorial builds the layer around the loop: sessions, persistence, approvals, and a UI contract — by hand, with the OpenAI SDK. Tutorial Sat, 18 Jul 2026 00:00:00 GMT https://akashpanchal.com/articles/breadcrumbs-over-blobs https://akashpanchal.com/articles/breadcrumbs-over-blobs Your agent just called searchDocs() and got back 48KB of JSON. On the next turn it re-reads all of it — or worse, silently drops the detail it needs. Store signatures and pointers instead of blobs. Article Sat, 18 Jul 2026 00:00:00 GMT https://akashpanchal.com/articles/two-agent-harnesses https://akashpanchal.com/articles/two-agent-harnesses Two frameworks, working independently, reached for the same word — harness. But they bet on opposite shapes of work: one you hold and steer, the other you hand a goal and let run. Here's the line between them, in code. Article Tue, 07 Jul 2026 00:00:00 GMT https://akashpanchal.com/articles/voice-agents-hard-problems https://akashpanchal.com/articles/voice-agents-hard-problems The demo is easy — speech-to-text, LLM, text-to-speech, done. Then a real person talks to it and everything falls apart: the silences are too long, it talks over them, it can't tell when they're done. The hard problems in voice aren't the models. They're latency, barge-in, and turn-taking. Article Sat, 04 Jul 2026 00:00:00 GMT https://akashpanchal.com/articles/ai-sdk-v7-features https://akashpanchal.com/articles/ai-sdk-v7-features Every agent project had the same skeleton at the top: call the model, run tools, loop, pray you got the stop condition right. v7 moves that — plus approvals, structured output, and telemetry — into the SDK. Here's what I reached for the week it landed. Article Wed, 01 Jul 2026 00:00:00 GMT https://akashpanchal.com/articles/agent-runs-code-vercel-sandbox https://akashpanchal.com/articles/agent-runs-code-vercel-sandbox An agent that writes code you can't run is a fancy autocomplete. But running model-generated code on your own box is how you get a crypto miner. I build a mini-app where the agent writes, executes, and self-corrects code inside a Vercel Sandbox microVM — and walk the parts that surprised me. Article Sun, 28 Jun 2026 00:00:00 GMT https://akashpanchal.com/tutorials/mastra-evals https://akashpanchal.com/tutorials/mastra-evals The demo sounds sharper. Production quietly gets worse. Part 7 — the series finale: deterministic checks, model-graded scorers, CI gates, and live sampling so 'it seems better' becomes '0.86, up from 0.71'. Tutorial Tue, 23 Jun 2026 00:00:00 GMT https://akashpanchal.com/tutorials/mastra-durable-agents https://akashpanchal.com/tutorials/mastra-durable-agents Forty-page scrape. Human approval that takes a day. A cron job at 3am. Part 6: background tasks, crash-proof durable agents, and heartbeats — machinery for work that doesn't fit in one request. Tutorial Tue, 16 Jun 2026 00:00:00 GMT https://akashpanchal.com/tutorials/mastra-rag https://akashpanchal.com/tutorials/mastra-rag A confident answer with no source is still a hallucination waiting to happen. Part 5: chunk, embed, store, query — wire a retrieval pipeline under your agent so it answers from your documents, with citations. Tutorial Tue, 09 Jun 2026 00:00:00 GMT https://akashpanchal.com/tutorials/mastra-streaming https://akashpanchal.com/tutorials/mastra-streaming Ten seconds of silence looks identical to a crash. Part 4: wire agent.stream() into a UI — tokens, tool calls, and custom progress events — so users watch the work happen instead of staring at a spinner. Tutorial Tue, 02 Jun 2026 00:00:00 GMT https://akashpanchal.com/tutorials/mastra-harness https://akashpanchal.com/tutorials/mastra-harness Refresh the tab. Approve a delete. Hand off a subtask. Part 3: Mastra's AgentController adds sessions, modes, subagents, and tool approvals — the layer that turns a loop into something users can depend on. Tutorial Tue, 26 May 2026 00:00:00 GMT https://akashpanchal.com/tutorials/mastra-workflows https://akashpanchal.com/tutorials/mastra-workflows Agents decide. Workflows guarantee. Part 2: typed multi-step pipelines with sequencing, parallelism, branching, loops, and human-in-the-loop suspend & resume — for the steps where order isn't up for a vote. Tutorial Tue, 19 May 2026 00:00:00 GMT https://akashpanchal.com/tutorials/mastra-agents https://akashpanchal.com/tutorials/mastra-agents Every new agent project starts with the same hand-rolled loop. Part 1 of the Mastra series: define a typed agent, wire tools with createTool, and add memory so it survives the next turn — without rebuilding the plumbing again. Tutorial Tue, 12 May 2026 00:00:00 GMT