Claude Slow After SpaceX Deal? Split Anthropic and Dev Hosts in Clash (2026)

1. Headlines, attention, and the responsibility split

When coverage pairs SpaceX with Anthropic, two honest things happen at once. First, more people try Claude products in the same week, which increases congestion on auth, console, and model edges even when engineers are doing everything right. Second, your own toolchain suddenly includes coworkers who “just installed the CLI last night” and are now pinning every stalled spinner on that article they skimmed in the group chat. Both realities matter—but they operate on different layers. Provider-side load shows up on status pages and shared error fingerprints. Client-side chaos shows up as uneven paths where Chrome still streams while npm times out because half of JavaScript delivery rides DIRECT through a domestic shortcut your subscription injected three months ago.

Neither story absolves you from routing hygiene. A news spike simply makes latent mistakes visible. Think of it as compaction pressure: the network stack breaks where the gasket was already thin. That is why we treat hype cycles as a migration trigger even when you are not literally moving data centers. You are migrating assumptions—replacing “it worked on coffee-shop Wi‑Fi” with a named list of domains, policies, and verification steps you can hand to a teammate without whispering “have you tried toggling global mode?”

We will not litigate financial or partnership details here; those belong to primary reporting. What we can verify locally is whether your Anthropic API calls, browser sessions, and developer dependencies traverse coherent exits, because that question is answerable with connection logs anybody can capture on a laptop. If you want a deeper, install-by-install focus on Claude Code and package managers, keep our Claude Code CLI, npm, and GitHub routing guide beside this page. If your pain skews browser-first console UX, pair with the browser-centric Anthropic split walkthrough. This piece sits between those two: hotter search framing, heavier emphasis on choosing how buckets relate when subscriptions churn.

2. Three planes: model, IDE shell, dependency delivery

Stable architectures name their traffic before they touch YAML. Plane one is model and account traffic—hosts that answer to Anthropic branding even if the certificate chain looks boring. Plane two is the integration surface of Claude Code or any IDE plugin that shells out, spawns language runtimes, or reuses tokens minted in a browser. Plane three is everything your toolchain downloads to exist at all: npm registry metadata, tarball hosts, Git LFS edges, GitHub release artifacts, and random vendor CDNs that only appear when optional native dependencies wake up.

Why three instead of one “AI proxy” toggle? Because subscription lists do not know you are a developer. They know ASN regions and marketing keywords. A rule that helpfully sends “video CDN” traffic DIRECT can still intersect delivery domains your postinstall script needs tonight. A second rule that optimizes latency for generic HTTPS may strand sibling hostnames on different continents. You feel that as “Claude is tired today” when in fact your dependency graph is playing Twister.

Write the three-plane inventory in a scratch note before you edit production YAML. For each plane, list the representative command you use daily: a short API call, a CLI chat prompt, and an install that historically hurts. That discipline prevents the laziest failure mode—pasting a keyword block you found on a forum and hoping it ages gracefully through the next three core upgrades.

3. Bucketing Anthropic domains without magical thinking

Start with what you can observe during a real failure window, not what you wish were true. Programmatic Claude use tends to cluster on api.anthropic.com, but sign-in journeys may touch console or identity-shaped subdomains, and static delivery edges sometimes wear different labels in your Mihomo table than in marketing diagrams. Capture them together in a bucket unless compliance requires splitting internal employees from contractors.

Streaming responses punish mid-flight node swaps more than quick GETs. If your selector hops jurisdictions between packets, long HTTP/2 streams reset in ways that resemble vague client timeouts. That observation matters more during news spikes because auto selectors stress-test your configuration precisely when you least want ambiguity. A deliberate “stable exit” group often beats an ego-driven “fastest ping” carousel for model conversations.

Keep OAuth alignment boring: the browser that authorizes tokens should ride the same policy family your CLI expects when reusing them, unless you have a documented reason to fork. Disjoint OAuth paths spawn maddening “signed in yet unauthorized” loops that look like service outages until you diff host rows. If leadership suddenly asks for SpaceX coverage screenshots, do not let that urgency trick you into editing rules without capturing before-and-after logs—you will need those receipts when the VPN vendor pushes an auto-update next Tuesday.

4. The developer plane: npm, GitHub, and surprise guests

Plane three is where attention economics hurt most. Everyone wants to try Claude Code after reading a headline; installs spike in parallel; registries and release CDNs see bursty shapes that look like DDoS to naive heuristics. Your job is to make those bursts predictable inside Clash rather than mysterious background noise.

npm rarely touches only registry.npmjs.org. Follow an install in your connection view and you will see redirects, integrity fetches, optional native downloads, and occasional jumps to GitHub when maintainers did not want to pay another storage bill. Treat those hosts as siblings, not footnotes. If your rule stack sends the registry through a tunnel while GitHub release traffic DIRECTs via a flaky domestic path, you will produce “npm hates me today” posts that technically blame the wrong culprit.

GitHub adds its own comedy: HTML browsing can succeed while objects.githubusercontent.com or release assets choke because a shortcut matched one label but not another. The GitHub CLI inherits the same inheritance debates as Node—proxy awareness depends on environment and launcher. When both succeed in Cursor but fail in a stripped-down CI shell, resist the urge to ship a global catch-all; instead, paste the exact host list your failure reproduced.

Mirrors and enterprise registries do not erase this frame—they relocate it. If your employer mandates an on-prem mirror that must be DIRECT, document that exception beside the global policy. Otherwise a well-meaning “optimization” PR will route your mirror through an exit that breaks compliance scanners without telling you loudly enough.

5. Policy groups: unify first, split only with a memo

Beginners imagine seventeen custom policy groups because it feels professional. Veterans unify until reality forces a fork. A single coherent PROXY group for “externally sensitive SaaS plus dev delivery” beats five fragile groups that nobody remembers how to audit. Split when you can write down the reason in one sentence: “Billing requires EU egress for Anthropic invoices but GitHub may use US assets,” or “Security wants split DNS for console but not for API.” If you cannot produce that sentence, you are probably decorating YAML for emotional satisfaction.

When you do split, separate axes cleanly. Mixing “Anthropic” with “fast gaming CDN” groups creates accidental precedence bugs when providers reorder lists. Name groups after outcomes—Anthropic-stable, Dev-artifacts—not moods. Teach collaborators how selectors behave: url-test jitter during spikes can negate the calm you expected from the word “fallback.”

Document subscription provenance. Third-party rule providers update on their own schedule; the day they widen a domestic DIRECT shortcut might coincide with the day your CEO demo relies on Claude. If you vendor rules, freeze a known-good tag until you intentionally roll forward. That habit costs five minutes monthly and saves five hours quarterly.

6. Rule ordering when GEOIP shortcuts get greedy

Most “random slowdown after news” mysteries end with someone discovering a GEOIP or regional shortcut inserted above SaaS exceptions. Lists optimize for averages; your job is to protect corner cases that power revenue work. Place explicit DOMAIN-SUFFIX lines for the hosts you verified—anthropic.com, npmjs.org, github.com, githubusercontent.com, and siblings your logs actually showed—before catch-alls hand traffic to defaults you only half understand.

# Illustrative fragment — rename PROXY to match your profile
rules:
  - DOMAIN-SUFFIX,anthropic.com,PROXY
  - DOMAIN-SUFFIX,npmjs.org,PROXY
  - DOMAIN-SUFFIX,nodejs.org,PROXY
  - DOMAIN-SUFFIX,github.com,PROXY
  - DOMAIN-SUFFIX,githubusercontent.com,PROXY
  # Broad shortcuts belong *below* verified developer SaaS

After insertion, diff the running config against your repo copy. GUI editors occasionally reorder visually without telling you. If two teammates edit simultaneously, merge conflicts become routing conflicts—treat YAML like infrastructure, not scrap paper.

Keyword rules deserve suspicion. They are useful for emergency triage and dangerous for long-term hygiene. If you drop DOMAIN-KEYWORD,anthropic beside DOMAIN-KEYWORD,google because a blog said so, expect odd cross-talk the day a unrelated product name shares a substring. Suffix rules cost more typing upfront and less blood pressure later.

7. Claude Code shells and the proxy env gap

Browsers follow operating-system proxy tables more willingly than developer tools spawned from an IDE. Claude Code sessions launched inside integrated terminals often inherit whatever environment that terminal had at birth—sometimes nothing at all. If HTTPS_PROXY is empty, Node-flavored stacks may attempt naked TCP even when macOS or Windows advertises a system proxy for “user-facing” apps. Your subjective headline becomes “Claude is slow post-announcement” when the objective graph says “this subprocess never hit Clash.”

Export proxies explicitly to the shell that launches the CLI, or escalate to TUN mode when stubborn binaries ignore application settings. TUN is not morally superior; it is a broader net with broader side effects. Note conflicts with corporate VPNs and hypervisors before you celebrate. For POSIX workflows, the companion lab in our macOS terminal proxy environment guide still mirrors what most teams need when proving inheritance.

Windows doubles the fun: WinINET versus WinHTTP divergence still surprises people who assumed “system proxy” meant one brain. Capture both cmd.exe and PowerShell if symptoms disagree. When GitHub authentication succeeds in a browser but API calls from gh stall, compare OAuth callback paths against REST host rows—you may be honoring two exits without noticing.

8. DNS, fake-ip, and “Anthropic throttling” mirages

Clash’s fake-ip mode pairs quick answers with rule evaluation. When resolvers disagree about what a label means, TLS retry storms look like mysterious throttling—even when Anthropic never sent a rate limit header. Validate DNS upstream quality before you chase node latency leaderboards. Satellite, hotel, and school networks inject wildcards that punish international SaaS without announcing themselves.

Pin sensitive suffixes to predictable resolvers when your core build supports targeted policies—field names differ by Mihomo release, so quote upstream docs instead of cargo-cult snippets from ancient threads. Compare answers from inside Clash versus outside when split-horizon DNS is plausible. Two IP families for the same hostname invite HTTP/2 coalescing heartbreak, especially under parallel installs that fan out dozens of connections.

IPv6 deserves explicit mention. If AAAA attempts bypass your tunnel while IPv4 rides the proxy, you get nondeterministic failures timed to whichever stack the runtime touched first. Temporary experiments toggling dual stack are valid telemetry, not superstition.

9. Verification protocol: prove it before you narrate it

After any change, run a disciplined triad: a minimal model call path, a quick npm metadata interaction that mirrors your real registry, and a GitHub asset fetch matching your nastiest historical install. If any leg fails, open the connection table before swapping remote servers. Provider status pages matter, but local evidence arrives faster and respects your outage budget.

Save paired log slices—good and bad—labeled with timestamps and exit nodes. Human memory drifts after midnight incidents; JSON excerpts do not. When executives forward SpaceX memes alongside “why is Claude sad,” your answer should cite hostname rows, not vibes.

If IDE-integrated terminals fail while bare shells succeed, diff environment variables aggressively. Sometimes a plugin injects proxy overrides you forgot about six launches ago. If containers are involved, reproduce on the host before claiming the cloud broke—the number of Docker-for-Mac ghost stories is statistically significant.

10. FAQ: fast answers when Slack is loud

Is this just FUD about SpaceX? No—it is an acknowledgment that attention spikes correlate with traffic spikes. Your routing still has to be correct on quiet Tuesdays.

Should I abandon split tunneling? Only if compliance allows. Otherwise tighten exceptions: narrow DIRECT shortcuts, elevate SaaS suffixes, and prove coverage with logs.

Do I need separate outbound profiles per employee? Usually not. Shared baselines with documented exceptions scale better than artisan YAML per laptop.

What if vendor status is green but I still fail? Then you have localized routing, DNS, or inheritance bugs—exactly the class this playbook targets.

11. Choose boring graphs when the news is loud

Headlines tying SpaceX to Anthropic are a forecast that more humans will click “try Claude” this week. They are not a substitute for hostname discipline. Model traffic, IDE shells, and the npm plus GitHub delivery plane each fail in different ways when subscriptions optimize for averages. Group Anthropic domains coherently, place developer exceptions ahead of greedy GEOIP shortcuts, reconcile DNS with fake-ip, and teach terminals the same proxy story your browser already knows.

Compared with opaque one-click VPN clients that shuffle your packets behind a cheerful toggle and leave you guessing which hostname just died, a Mihomo-powered Clash stack shows live rows, respects explicit precedence, and survives subscription churn without treating every outage like folklore. When capacity genuinely dominates, you will still benefit—because your baseline will be clean enough to tell the difference between a provider graph and a self-inflicted split. Download Clash for free if you want that visibility on your desktop without renting mystery meat infrastructure.