New Relic (@newrelic) announced its MCP Plugin is live on the Claude Marketplace (claude.com/plugins/newrelic), connecting observability data into Claude for faster debugging and AI-assisted troubleshooting.
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@CompleteSkeptic (Diogo Almeida, TypeSafe; RLHF background) published public design notes on TypeSafe × coding agents (Google Doc), covering routing, context compaction, subagents, skills, and MCP tradeoffs, and invited the community to experiment. The post drew ~930 likes / ~56k views the same day.
@rakyll (Jaana Dogan) announced github.com/agent-substrate/env (Apache-2.0): an isolated, snapshottable environment layer on Agent Substrate with ate-env CLI/API and guest daemon, plus a built-in MCP server exposing filesystem and shell tools so any MCP client can try Substrate without writing integration code first (API still alpha).
@AverageAiBro highlighted retrieval-mcp (github.com/abendrothj/retrieval-mcp) v0.1.6, a Rust stdio MCP for coding agents whose measured four-tool default (search_exact, read_source, find_callers, search_concept) cuts schema tax; README claims ~24–42% fewer input tokens vs specialist search MCP with matched answer quality. Install via cargo or the release binary, then register with Claude Code/Codex.
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