What’s new.

SuperCompress v2

• Hosted Neural Keep is live on the compress API, scores context against the query, keeps original lines, cuts the rest.
• Coding-agent evidence-containment methodology published; per-task B5 rows still pending, do not treat summary-only JSON as headline cuts.
• Hosted API, and an agent plugin for coding agents.
• Pay-as-you-go billing went live, with a free monthly allowance. No seat plans.
• Strongest on coding-agent dumps, tool output, logs, diffs, stack traces, where the answer is a few original lines inside a long context.

Launch note · Get an API key · Agent plugin

Hosted MCP OAuth endpoints

• OAuth 2.1 + PKCE endpoints added for https://www.supercompress.dev/api/mcp. Designed for Google sign-in; recommended path remains npm install -g supercompress-proxy then supercompress setup (or an API key header).
• Claude Code: /plugin marketplace add Supercompress/Supercompress then /plugin install supercompress@supercompress.
• Terminal: npm install -g supercompress-proxy && supercompress setup.

Launch note · MCP docs · npm supercompress-proxy@0.5.37

OAuth prompt path (plugin + initialize)

• Claude Code .mcp.json no longer sends Authorization: Bearer ${SUPERCOMPRESS_API_KEY}, hosts can prompt for auth instead of a silent empty key.
• Cursor plugin: SUPERCOMPRESS_API_KEY is optional, not required.
• Hosted MCP returns 401 + WWW-Authenticate on initialize (not only tools/call). Query-string ?key= auth removed.

MCP OAuth launch · Coding agents · npm supercompress-proxy@0.5.37

MCP OAuth server-side + benchmark page

• Hosted MCP OAuth 2.1 (PKCE) endpoints added (/.well-known/oauth-*, authorize / token / approve), designed to share the Google account path with CLI device-link. Recommended install remains supercompress setup.
• /benchmarks rewritten for v2 Neural Keep with a separate legacy compiler section. Per-task B5 rows for headline cuts still pending, do not treat summary-only JSON as headline figures.
• Homepage: Neural v2 vs Compiler split · coding-agent harnesses · evidence-containment language.

Coding agents · Benchmarks · npm supercompress-proxy@0.5.36

API / dashboard

• Analytics panel inside the API dashboard, live token savings, requests, coding-agent share, and key breakdown from your signed-in /api/keys meter (dither charts). /analytics stays on /dashboard?panel=analytics.
• Fix Analytics chart paint (Bayer wells, layout-ready draw). No demo/fake flash in production.
• Fingerprint-bound Idempotency-Key, reuse with a different compress payload returns 409 idempotency_conflict (blocks free recompress / billing bypass).
• Durable hourly rate-limit hits keyed by payload fingerprint, not the client-chosen request id.
• Request-level billing idempotency (Idempotency-Key / billing_usage/{uid}:{requestId}) so billing timeouts cannot double-charge on retry.
• Bill before per-key analytics; auto-recharge when balance is positive but insufficient, then retry the same request id.
• Transactional first-pay bonus; honest Checkout replay flags; cumulative micro-USD rounding.
• Earlier: fail-closed usage burns, permanent Stripe credit idempotency, POST-only compress, CCR marker cleanup, billing ledger as source of truth.

Site / docs

• GitHub Sponsors on the Supercompress repo, Sponsor button + FUNDING.yml → @arjunkshah12345-hash.

Coding agent plugin

• macOS/Linux service register+unregister uses execFileSync argv (no shell-interpolated launchctl paths).
• Interactive TUI (supercompress / supercompress tui, npm 0.5.19), paper-branded live usage, connect, setup, plugin, agents, and proxy. Needs Bun; classic commands still work.
• OpenClaw auto-compress parity with Hermes: setup/plugin installs MCP + AGENTS.md + managed skill + internal hooks + extension plugin.
• Session-scoped inbox (inbox/<sessionId>/latest.md) + SUPERCOMPRESS_CONFIG_DIR; exact plugin path uninstall; real compactSessionMemory; chunk ≤120k; stable hook idempotency keys.
• Preserve tool-call order when splitting compressible history; rank compression against the latest user ask in the full thread.
• Proxy sends Idempotency-Key on compress API calls.
• See 0.5.17 / 0.5.16 for the latest published npm fixes.

Coding agent plugin

• Fix agent attribution: Cursor postToolUse no longer mislabels usage as claude_code.
• Cursor hooks set SUPERCOMPRESS_AGENT_NAME=Cursor explicitly.
• Stop using configured_agents[0] as the compress agent name.

Coding agent plugin

• Hard paywall surfacing: hooks + MCP no longer silently fail-open on HTTP 402.
• Loud [SuperCompress PAYWALL] CTA; proxy returns 402 with billing URL.
• Restore missing compressIncremental export used by MCP compress_context.

Coding agent plugin

• Setup-first: supercompress setup / plugin is the recommended path (auto MCP + hooks). wrap deprecated.
• Zed: detect macOS Zed app; write MCP via context_servers.
• Docs/links prefer https://docs.supercompress.dev/....

Coding agent plugin

• Headroom-parity every-submit compress: Cursor / Claude / Codex hooks compress context on every message that has real context; tiny asks (~<400 chars) skip.
• User ask stays the query (never mangled); digests land in ~/.supercompress/inbox/latest.md.
• Tool-dump threshold lowered 800 → 400 chars to match the proxy floor.

Coding agent plugin

• Auto across agents: MCP installed on every detected host (Cursor, Claude, Codex, OpenCode, FreeBuff, Windsurf, Continue, Gemini, and more).
• Claude Code + Codex: every-message + PostToolUse tool-dump compression.
• Always-on instruction files when those agents are present.
• supercompress wrap <agent>, Headroom-style full-traffic proxy auto-compress.

Repository & site

• Public GitHub source of truth; shared landing footer across site pages.

Coding agent plugin

• Every-message compress threshold lowered (compress prompts ≥40 chars; tiny ones still write inbox).

Coding agent plugin

• Every-message auto-compress: IDE beforeSubmitPrompt writes ~/.supercompress/inbox/latest.md on every submit; Claude Code + Codex UserPromptSubmit inject compressed digests; postToolUse threshold lowered to 800 chars.
• Always-on agent rule forces Read of inbox digest first every turn.

Coding agent plugin

• OpenCode MCP: write enabled: true, timeout: 60000, and experimental.mcp_timeout. Prefer supercompress-mcp on PATH over a baked absolute Node path.

Coding agent plugin

• Harden MCP stdio server against -32000: Connection closed: catch unhandled errors, keep process alive on tool failures, timeouts on API calls, stderr-only logging.

Coding agent plugin

• Ship LICENSE + CHANGELOG in the npm tarball.

Coding agent plugin

• postinstall is guidance-only, no longer rewrites agent MCP configs on npm install. Use supercompress setup or supercompress plugin.
• FreeBuff dual-launch, MCP compress handshake waits for tool responses.
• Docs/README aligned with MCP-first install path; agent catalog count 49.

Coding agent plugin

• MCP-first coding-agent plugin (compress_context, connect_account, usage_summary).
• Optional localhost API proxy via supercompress setup --proxy.
• Hard launch of SuperCompress coding agent integrations (Cursor, Claude Code, Codex, and more).