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SQLite grew up — WAL, embedded replicas, vector search, managed hosts that erase the single-writer wall. So the choice for a solo builder is no longer 'toy vs real database.' It's a question about your write pattern and your ops budget. Here's the actual decision tree.
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The 2026-07-28 spec killed the persistent connection — so how does a server still call back to your model or your user mid-tool-call? The answer is MRTR, and it's a resume loop you drive from the client.
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OpenAI's open-weight workhorse fits on one H100 because of MXFP4. Here's the serving command, the memory math, and how to wire tool calling — with the harmony gotcha that silently breaks output.
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Skip the framework. An agent is an LLM calling tools in a loop — here's the ~40 lines that run it, the three context moves that keep it from rotting, and how to hang a real MCP tool off it.
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Anthropic ships four levers for keeping a long-running agent inside its window. The comparison pieces tell you which is which — this one wires all four together in one loop, in code.
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A stack trace tells you a normal service died. It tells you almost nothing about why an agent did the wrong thing. Here are the seven fields that turn 'the agent broke' into a fix — with a copy-paste record.
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The classic 'five whys' assumes a deterministic chain. An agent that fails at temperature 0.7 breaks that assumption. Here's a postmortem template built for non-deterministic systems — blameless, reproducible, and shippable.
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Emergent just became a unicorn selling non-technical founders production software from a prompt. Before you run your company on one, run this six-point export-and-ownership audit.
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Keep LangGraph for orchestration, get a React streaming chat for free. The rewritten adapter turns a graph stream into an AI SDK UIMessage stream in a few lines.
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The 2026-07-28 spec says you can drop sticky sessions — but a leftover in-memory map will still pin you. Here's the test that catches it before July 28.
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Google shipped a code-execution sandbox that lives inside your existing Cloud Run instance — millisecond starts, deny-by-default egress, and no extra bill. Here's the copy-paste path from a model's Python output to a safe result, and where the isolation stops.
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The stateless rewrite got the headlines; the auth hardening is what will break your integration on July 28. Three client-side fixes — validate iss, declare application_type, discover the server the right way — with the exact code.
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Agentjacking hijacks your coding agent through data it already trusts — a poisoned Sentry error, a booby-trapped Jira ticket. No server is breached and no human approves anything. Here is the concrete config that breaks the attack, and why deny rules alone won't.
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Passing a bare string to a LanceDB full-text index tokenizes it and ORs the terms — good enough until a user types a phrase, a typo, or a term that only matters in one column. The query classes fix all three, and they're a few lines each.
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A multi-turn agent that spins up a fresh sandbox every turn loses its filesystem, its installed packages, and its running processes each time. Here's the exact pause/resume code — and the auto-pause config that stops you paying for idle boxes between turns.
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No more Mcp-Session-Id header, no initialize handshake — here's the exact client-side change, with copy-pasteable code.
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Your prototype's PersistentClient runs on one box's disk. Here's the exact chroma copy walkthrough to push those collections onto Chroma Cloud's object-storage backend — plus the two batched-write fallbacks for when the CLI can't reach both ends.
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E2B's Build System 2.0 kills the e2b.Dockerfile and the `e2b template build` CLI step — you define the sandbox environment in Python or TypeScript, and the build runs itself. Here's the exact code, and the one capability it unlocks that a Dockerfile never could.
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Snowflake now ships its own managed MCP server, so your CrewAI agents can query the warehouse in natural language without a connector, a warehouse password, or a single line of glue. Here's the exact wiring — and why the security boundary moves into Snowflake's role model.
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Mem0's 2.x line rewrote how an agent's memory is written and read — one LLM call per turn, no UPDATE/DELETE, and entity links built into the main store so you no longer bolt on a graph database. Here's how the new add-and-retrieve path works, with the exact API.
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Langfuse's v4 SDK rewired everything onto OpenTelemetry, so the way you instrument an agent changed. Here's the current, copy-paste path from an empty file to a scored trace — with the v3→v4 renames that will bite you if you copy an old tutorial.
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CrewAI's built-in memory resets every run and lives in a local SQLite file. This is the copy-paste walkthrough for swapping in Mem0 so a crew remembers a user across sessions — both the managed Cloud path and the self-hosted OSS one.
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Pure vector search misses exact terms — product SKUs, error codes, function names — that your agent's retrieval has to nail. This is the copy-paste walkthrough for combining semantic and keyword search in LanceDB with an FTS index and a reranker, in about a dozen lines.
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Every agent that validates a file path with realpath() and then opens it has a race window. An attacker — or the model's own concurrent code — swaps a symlink in that window and your allow-list writes to /etc. Here's the bug, the class of 2026 CVEs proving it's live, and the atomic fixes that actually close it.
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You want to trial a cheap new model in your agent without a bad night. Here's a provider-agnostic router — primary plus ordered fallbacks, a hard cost cap, and a canary that logs cost-per-task — that drops in front of any OpenAI-compatible endpoint.
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A copy-pasteable walkthrough for founders shipping a coding or data-analysis agent — execute model-generated Python in an isolated E2B microVM, capture stdout/stderr, enforce timeouts, and kill runaway processes without touching your own server.
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