GitHub / r/mcp · Oct 9, 2026 · 8:25 AM

ShareBox is a self-hosted MCP server that lets Claude Code publish the tools it builds as shareable links

Posted to r/mcp on Oct 8, ShareBox lets you ask Claude to build a small web tool, publish it to your own instance over MCP, and get back an HTTPS link you can share by email, with Google sign-in, per-tool storage, and gVisor sandboxing handled by the platform. It's AGPL, self-hosted, listed in the official MCP registry as io.github.zalaso/sharebox, and very new (zero GitHub stars at time of writing).

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Upstash ships an MCP toolkit for long-running Tasks and webhook Events in TypeScript servers

Released Oct 9 as part of Upstash AgentKit, @upstash/mcp toolkit sits on the official MCP TypeScript SDK and adds the spec's Tasks extension for long running tools plus Events, a not yet spec proposal for waking an agent via webhooks. Client support is thin: as of Oct 7, ChatGPT handles Events in Work chats, while Claude Code, Codex, and Cursor support neither…

Upstash Blog 2 hours ago

agentc is a coding agent in C with no libc that fits under 1MB and idles under 1MB of RAM

Shown on HN Oct 7 and inspired by the pi agent, agentc is a static, embeddable coding agent with a TUI, agent loop, tools, MCP, and skills all built as extensions, aimed at tiny hardware or embedding in your own binaries without a Node dependency chain. CI builds cover Linux (x64, arm64, riscv64), Windows (x64, arm64), and macOS arm64; the Rust/C embedding API is still listed as coming in a few days, and the author wants Mac testers…

Show HN / GitHub 3 hours ago

Anthropic launches OSS Scanner, free unreviewed Claude security scans for critical open-source projects

Launched Oct 8 under the new Anthropic Cyber Mission, OSS Scanner gives enrolled projects periodic scans from Anthropic's strongest models, with a proof of concept and suggested fix per bug, sent without human review (Anthropic expects a true positive rate above 90%). It's opt in for established projects with critical infrastructure or user security impact, and maintainers enroll by opening a PR to the anthropics/oss scanner repo…

Anthropic 4 hours ago

Anthropic launches Claude Dashboards and Claude Motion in beta; Docs, Slides, and Design go GA

Announced Oct 8, Claude Dashboards (paid plans) connects to Databricks, Snowflake, Redshift, ClickHouse, or Salesforce and builds auto refreshing dashboards from plain language questions with a clickable query behind every number; Claude Motion (Team and Enterprise) writes code based editable animations you can export as MP4. Claude Docs, Slides, and Design left beta the same day and are now on every plan, including Free…

Digital Trends 5 hours ago

Arcjet ships runtime security for coding agents across Claude Code, Codex, Cursor, and Copilot

Announced Oct 8, Arcjet Runtime Security for Coding Agents discovers agents on developer endpoints and applies one Rego policy set across Claude Code, Codex, Cursor, Muse Code, and Copilot through each agent's hooks, with detectors for prompt injection, PII, and high risk MCP or web destinations. It's available now; Arcjet recommends publishing the starter policies in dry run for a week before enforcing…

Arcjet Blog 6 hours ago

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