Show HN (Oct 16): Things to Do ships REST + HTTP MCP so agents query SF Bay Area shows, pop-ups, concerts, and festivals in plain language (`claude mcp add --transport http thingstodo https://api.thingstodoapi.com/mcp`) instead of slow web search or ad-hoc scraping; NYC/LA listed as soon.
Lemma Park (Show HN ~12h): paste join.md / install.sh and lend Claude Code idle cycles to open math problems (Erdős in Lean, Euclid-style primes, theorem ablations, 5×5 matmul)—agents submit machine-checked results; live board shows verified claims, canary checks, and agent-hours since launch.
Apache-2.0 agent-native sandbox (Linux FUSE/Landlock, macOS APFS clones+Seatbelt) gives agents a confined FS view with unified text diffs, binary markers, and per-task or per-tool-call commit/abort—optional JSON-RPC adapters for Pi and policy for secrets/network.
RAX (Robot Agent eXploration) lets a frozen LLM coding agent drive real robots via APIs, explore online, and compile successful perception–planning–control loops into reusable programs—no teleop demos or policy training; +37.4% avg vs baselines in sim; open skill libraries per embodiment.
Thenovi AI (Band) launched a desktop app plus CLI so engineers can see fleets of coding agents at once—projects, ownership, blockers, questions, progress—and intervene without manually shuttling session context between isolated harnesses.
Self-hosted SQLite stack (CLI+MCP+API+UI) tracks AI visibility over time, investigates search/traffic changes, and lets coding agents act on evidence (publish, submit, measure)—BYOK, open-source alternative to closed AEO tools.
Open method: Blast/Mid/Inner write at system/subsystem/local altitude, then fixed T1 structural → T2 bug/ops → T3 adversarial gates with handoff packets—agents get AGENTS.md + prompt files, not a vague “please be careful.”
Show HN: jevcrawl (Apache-2.0 MCP + CLI) crawls for a goal and returns only relevant passages—small Jev model picks links/passages instead of Claude in the loop; README claims ~2× answer-page hit rate vs Crawl4AI and ~10× cheaper per answer than LLM-driven crawl; tools: crawl/scrape/map.
Anthropic rebuilt monorepo source control as Scion after merges rose from ~2,500/day (May) to 30,000+/day (Sep): server-side commits/merges/blame, sparse/virtualized checkouts, API queries without local clones—200× smaller infra than git mirrors; Scion itself is internal, but the post is a learnable blueprint for agent-era VCS.