RepoRecon – a Claude Code plugin that validates project ideas against GitHub

A new Claude Code plugin called RepoRecon validates project ideas against GitHub, checking if similar tools already exist before users build them. The plugin returns a verdict in approximately 90 seconds, flagging results as no close match, adjacent prior art, or strong overlap, with optional deep search for detailed evidence. RepoRecon requires an authenticated GitHub CLI session and is available via the Claude Code plugin marketplace under MIT license.

A Claude Code plugin that checks if your project idea already exists on GitHub before you build it. 🟢 No close match 🟡 Adjacent prior art — worth a closer look 🔴 Strong overlap — someone has likely shipped this Run these inside the Claude Code chat. /plugin marketplace add suleman-dawood/reporecon /plugin install reporecon@reporecon Fully quit and reopen Claude Code so the plugin registers not /clear — actually close the app process . — authenticated GitHub CLI session gh auth login gh CLI docs https://cli.github.com . Anonymous rate limits will fail preflight. gh ≥ 2.55 jq ≥ 1.7in your Claude Code session — RepoRecon aborts the run if it isn't. Silent skips were a 0.1 bug; we'd rather fail loudly. WebSearch tool must be enabled- macOS: brew install bash coreutils GNU timeout + bash ≥ 4 Verify: gh auth status && gh --version && jq --version /reporecon I want to build a CLI that previews diffs as a side-by-side TUI Or just describe an idea naturally in chat: "is there already a tool that does X" "validate my idea before I start building" "does this exist on github" You get a verdict in ~90 seconds. If it's 🟡 or 🔴, reply deep search or yes / dig deeper to clone the top candidates and get file-path-cited evidence ~10 min . Reports land in ./reporecon-reports/YYYY-MM-DD-<slug .md . One file per idea. A chat verdict block like this: 🟡 Some overlap — worth a closer look Your idea: "side-by-side TUI diff previewer with syntax highlighting" Top match: dandavison/delta 28k★, active — WORTH INSPECTING Reply 'deep search' to clone the top candidates and judge with file-path evidence ~10 min . Report: ./reporecon-reports/2026-05-27-tui-diff-previewer.md The on-disk report has the full per-candidate breakdown, axis scores, and — after a deep search — cited evidence by path/file.ext:LINE . If /reporecon doesn't seem to do anything after install: - Confirm the plugin shows up: type /plugin in chat - Try the natural-language trigger "does this exist on github" — bypasses slash-command routing /plugin uninstall reporecon → /plugin install reporecon@reporecon → fully restart Claude Code close the app, not /clear GitHub-only. GitLab, Codeberg, self-hosted forges, and package-registry-only tools are not searched. WebSearch results drift. Same query on different days can shift the verdict on borderline ideas. Verify before you decide. RepoRecon narrows the search; it doesn't replace you making the final call yourself before you commit to a project. MIT — see LICENSE /suleman-dawood/reporecon/blob/main/LICENSE .