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Issue 15/September 17, 2026/13 tools · 3 headlines

Local microVMs and harness SDKs that contain agent blast radius

Today's list favors clone-and-run isolation, process-local harness SDKs, and self-hosted control planes. Power users get durable sessions, warm pools, and eval loops without closed IDEs or host-wide risk.

01 — Power tools

The stack

  1. 01toolGitHub
    Brig↗

    brig-sh / NOFire AI

    Go CLI and session daemon that boots coding agents inside local microVMs with project mounts, credential delivery, and image verification.

    Use caseUse it to run a coding agent on one project directory so a bad command cannot touch the rest of the host.

    microvmsandboxcligo
  2. 02toolGitHub
    Cloudflare Agents↗

    cloudflare

    SDK for persistent stateful agents on Durable Objects with MCP, workflows, voice, browser agents, code mode, and sandboxed execution.

    Use caseUse it to deploy always-on edge agents that keep state, schedule work, and call tools without a separate control plane.

    durable-objectsedgemcpworkflows
  3. 03toolGitHub
    BossConsole↗

    risa-labs-inc

    Native multi-threaded JVM operator console (not Electron) that hosts coding agents with real browser, terminal, editor, secrets, and 100-plus MCP tools.

    Use caseUse it as a desktop control plane to supervise multiple agent sessions with hot-reload plugins and RBAC.

    desktopjvmmcpmulti-agent
  4. 04toolGitHub
    agent-hop↗

    hetpatel-11

    Rust runtime that opens real coding harnesses in a PTY, owns chrome around them, and hops a live session between Claude Code, Codex, OpenCode, Pi, and Grok.

    Use caseUse it to move an in-progress coding thread to another harness without restarting or losing local session search.

    rustptysessionmulti-harness
  5. 05toolGitHub
    AgentLens↗

    agentkitai

    Tamper-evident hash-chained audit logs for AI agents with OTel-native ingestion and cryptographically verifiable export snapshots.

    Use caseUse it to prove every LLM call, tool call, and approval in a chain that fails verification if any record is altered.

    auditotelobservabilitycompliance
  6. 06harnessGitHub
    reef-eval↗

    Human-Agent-Society

    Evaluation infrastructure for self-evolving agents on the Harbor task standard, measuring whether memory, skills, or harness changes improve scores.

    Use caseUse it to score autoresearch and containerized tasks before and after an agent persists learned state.

    evalself-evolvingharborbenchmark
  7. 07repoGitHub
    Harness-RL↗

    jiangxinke

    Black-box RL stack for training language agents inside multi-agent harnesses with action-args decoupling and conflict-aware policy optimization.

    Use caseUse it to train central or joint multi-agent policies without flattening whole trajectories into one token sequence.

    rlmulti-agenttrainingcapo
  8. 08repoGitHub
    agentmemory↗

    JordanMcCann

    Memory operating system for agents with knowledge graph, consolidation pipeline, and leading LongMemEval retrieval scores.

    Use caseUse it to give long-horizon agents durable multi-session recall, updates, and preference tracking under real retrieval.

    memorygraphlongmemevalretrieval
  9. 09toolGitHub
    tsilva agentbox↗

    tsilva

    CLI that launches Claude Code or Codex with full autonomy inside an isolated Docker container while host credentials and sensitive paths stay outside.

    Use caseUse it to run yolo-mode agent sessions on a trusted project without permission prompts or host leakage.

    dockersandboxcliisolation
  10. 10toolGitHub
    mattolson agent-sandbox↗

    mattolson

    Local locked-down sandbox with minimal filesystem access, sidecar egress proxy for hostname policies, and secret injection so the agent never sees raw keys.

    Use caseUse it to run coding agents under network allowlists and secret proxies from CLI or devcontainers.

    proxysecretsdevcontaineregress
  11. 11harnessGitHub
    siyad01 agentbox↗

    siyad01

    Go sandboxed runtime with zero-trust permission manifests, gVisor isolation, credential vault, immutable audit log, and kill switch.

    Use caseUse it to declare exactly what an agent may touch and auto-kill on limit breach for untrusted code.

    gvisorzero-trustgoaudit
  12. 12repoGitHub
    0xferrous agent-box↗

    0xferrous

    Sandboxed containers for coding agents with disposable Git or Jujutsu workspaces and optional Portal host capability mediation.

    Use caseUse it to spin Nix-reproducible agent images that discard worktrees after a run.

    nixworkspacegitsandbox
  13. 13repoGitHub
    PicoClaw↗

    breakcafe

    Serverless-first Claude agent runtime forked for request-driven HTTP with persistent memory, scheduled tasks, and MCP on Lambda-style platforms.

    Use caseUse it to host stateful agent conversations and skills as per-request containers without an always-on orchestrator.

    serverlesslambdamcpmemory

02 — In the wild

Articles and releases

  1. releaseNOFire newsroom
    Brig is Open-Source: the microVM Sandbox for AI Coding Agents↗

    NOFire AI

    NOFire released Brig under Apache 2.0 so coding agents run inside low-overhead microVMs on Mac or Linux with hardware isolation and curated agent profiles. The launch emphasizes auditability of a small microVMM surface and install paths via brew or curl.

    sandboxmicrovmreleaseopen-source

    Shipped

  2. releaseGitHub Releases
    Strands Agents harness-sdk typescript/v1.18.0 and python/v1.56.0↗

    strands-agents

    Recent monorepo tags add BM25 storage search, partial shell timeout output, notebook tool ports, and background result delivery through management tools. The dual SDK continues shipping lifecycle, MCP, and eval improvements for process-local harnesses.

    sdkreleasepythontypescript

    Shipped

  3. articleHarness Developer Hub
    Google Agent Runtime overview in Harness CD↗

    Harness

    Harness documents first-class deployment of agents to Google Vertex Agent Runtime using the same service, environment, and pipeline model as other CD targets. The writeup covers canary traffic shifts, rollback, RBAC, and secrets so agent images inherit enterprise delivery controls instead of one-off scripts.

    cdvertexdeploymentarticle

    Read

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