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dario

Your Claude and ChatGPT subscriptions each work in exactly one place.<br/>dario makes them work everywhere — at subscription pricing, not per-token API bills.

<p> <a href="https://www.npmjs.com/package/@askalf/dario"><img src="https://img.shields.io/npm/v/@askalf/dario?color=6f42c1&label=npm&logo=npm" alt="npm version"></a> <a href="https://github.com/askalf/dario/releases"><img src="https://img.shields.io/github/v/release/askalf/dario?color=6f42c1&label=release&logo=github" alt="Latest release"></a> <a href="https://github.com/askalf/dario/actions/workflows/ci.yml"><img src="https://github.com/askalf/dario/actions/workflows/ci.yml/badge.svg" alt="CI"></a> <a href="https://github.com/askalf/dario/actions/workflows/codeql.yml"><img src="https://github.com/askalf/dario/actions/workflows/codeql.yml/badge.svg" alt="CodeQL"></a> <a href="https://scorecard.dev/viewer/?uri=github.com/askalf/dario"><img src="https://api.scorecard.dev/projects/github.com/askalf/dario/badge" alt="OpenSSF Scorecard"></a> <a href="https://www.bestpractices.dev/projects/13638"><img src="https://www.bestpractices.dev/projects/13638/badge" alt="OpenSSF Best Practices"></a> <a href="https://github.com/askalf/dario/blob/master/LICENSE"><img src="https://img.shields.io/npm/l/@askalf/dario?color=6f42c1" alt="License"></a> <a href="https://www.npmjs.com/package/@askalf/dario"><img src="https://img.shields.io/npm/dm/@askalf/dario?color=6f42c1" alt="Downloads"></a> <a href="https://x.com/ask_alf"><img src="https://img.shields.io/badge/follow-@ask__alf-1da1f2?style=flat-square" alt="Follow on X"></a> </p> <p><strong>One local endpoint. Every AI tool you own. The subscriptions you already pay for.</strong></p>

_{<code>npm i -g @askalf/dario</code> · <strong>0</strong> runtime deps · <a href="https://www.npmjs.com/package/@askalf/dario">SLSA-attested</a> every release · nothing phones home · ~29k lines you can read in a weekend · independent, unofficial, third-party (<a href="DISCLAIMER.md">DISCLAIMER.md</a>)}

_{Part of <a href="#own-your-stack"><strong>Own Your Stack</strong></a> — 12 open tools for owning your AI infra: <a href="https://github.com/askalf/truecopy">truecopy</a> · <a href="https://github.com/askalf/strongroom">strongroom</a> · <a href="https://github.com/askalf/fieldpass">fieldpass</a> · <a href="https://github.com/askalf/plumbline">plumbline</a> · <a href="#own-your-stack">full family ↓</a>}

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🎉 dario v6.0 — any client shape, any subscription, and failover between them

Through v5, dario was a Claude proxy that had recently learned to reach a ChatGPT subscription on one path. v6 finishes that: either subscription can serve either wire shape, and either one can cover for the other.

• 🔀 Both wire shapes, both plans. Your ChatGPT plan now answers /v1/messages, not just /v1/chat/completions — so Claude Code, the Anthropic SDKs and agent runtimes can be served by it without knowing. Your Claude plan already answered both.
• 🪂 Failover between subscriptions. --pool-fallback=gpt-5.6-sol,claude-sonnet-5 is a chain: a drained Claude pool is served by ChatGPT, and a rate-limited ChatGPT is handed back to Claude. Two consumer plans, no API keys, and neither one going down takes you with it. → Failover
• 🧪 Shadow compare. x-dario-compare: <model> answers you normally and runs the same prompt past the other family, writing both to ~/.dario/compare/. Which model is better at your work, measured on your own traffic. → Shadow compare
• ➕ dario add altman / dario add amodei. Attach a plan by whose it is.
• 🩺 dario doctor reports failover readiness — including armed but INERT, the state that is green on every other check and cannot actually do anything.

Upgrading from v5? Nothing to do — every v6 feature is opt-in and a single-value --pool-fallback behaves exactly as it did. CHANGELOG

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You're already paying $20, $100, or $200 a month for Claude. Then Cursor wants an API key. Aider wants an API key. Cline, Continue, Zed, your scripts — every one of them bills you again, per token, while the subscription you already bought sits idle in Claude Code.

dario is one local endpoint that routes all of them through the Claude subscription you already pay for. Point any Anthropic- or OpenAI-compatible tool at http://localhost:3456 and you're done. No per-tool config, no second bill.

# 1. Install
npm install -g @askalf/dario

# 2. Log in to your Claude subscription (Pro, Max 5x, or Max 20x)
dario login                 # or `dario login --manual` for SSH / headless

# 3. Start the local proxy
dario proxy                 # separate terminal or background

# 4. Point any Anthropic-compat tool at it
export ANTHROPIC_BASE_URL=http://localhost:3456
export ANTHROPIC_API_KEY=dario

That's the whole setup. Every tool that honors those env vars now runs on your subscription.

Works with: Claude Code, Cursor, Aider, Cline, Roo Code, Continue.dev, Zed, Windsurf, OpenHands, OpenClaw, Hermes, Codex CLI, the Claude Agent SDK, your own scripts.

Add other providers and reuse the same proxy:

dario backend add openai     --key=sk-proj-...
dario backend add groq       --key=gsk_...    --base-url=https://api.groq.com/openai/v1
dario backend add openrouter --key=sk-or-...  --base-url=https://openrouter.ai/api/v1
dario backend add local      --key=anything   --base-url=http://127.0.0.1:11434/v1

export OPENAI_BASE_URL=http://localhost:3456/v1
export OPENAI_API_KEY=dario

Force a specific backend with a model prefix: openai:gpt-4o, claude:opus, groq:llama-3.3-70b, local:qwen-coder. Prefer Docker? ghcr.io/askalf/dario:latest — multi-arch (amd64+arm64), published every release (guide). Something off? dario doctor prints one paste-ready health report.

The interactive TUI

Type dario with no args (in another terminal) for a full-screen control panel — live request stream, per-model burn-rate, rate-limit utilization, billing-bucket breakdown, and an in-place config editor that writes to ~/.dario/config.json. Subscription accounting you watch happen instead of reading out of log files. Pure ANSI, zero new runtime deps.

┌─ dario ─────────────────────────────[ q quit · Tab next · ? help ]──┐
│  Status   Config   ▎Analytics▎   Hits   Accounts   Backends         │
├─────────────────────────────────────────────────────────────────────┤
│  ANALYTICS — last 60 min                                            │
│                                                                     │
│  Requests:       247  (4.1/min)        Tokens in:    142,830        │
│  Tokens out:      38,200               Subscription %:  98%         │
│                                                                     │
│  Per-model:                                                         │
│   opus-5        ████████████░░░░░░░░  60%  (148 req)                │
│   sonnet-5      █████░░░░░░░░░░░░░░░  26%  ( 64 req)                │
│   haiku-4-5     ███░░░░░░░░░░░░░░░░░  14%  ( 35 req)                │
│                                                                     │
│  Rate-limit:                                                        │
│   5h  ████░░░░░░░░░░░░░░░░░░░░░░░░  18%                             │
│   7d  ██░░░░░░░░░░░░░░░░░░░░░░░░░░   8%                             │
└─────────────────────────────────────────────────────────────────────┘

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The money

| Setup | Monthly cost — heavy user | |---|---| | Cursor + Anthropic API direct | $80–$300 | | Multi-tool heavy use (Cursor + Aider + Cline + Continue), per-token | $200–$600+ | | Any of the above + dario | $20–$200 flat — your existing Pro/Max plan, nothing extra |

One subscription, every tool. Switching providers is a model-name change, not a reconfigure — add a backend once and the same localhost:3456 speaks OpenAI, Groq, OpenRouter, or a local Ollama too.

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What it routes

You point every tool at one URL. dario reads each request, decides which backend owns it, and forwards it in that backend's native protocol.

| Client speaks | Model | Routes to | What happens | |---|---|---|---| | Anthropic Messages | claude-* / opus / sonnet / haiku | Claude backend | OAuth swap + CC template → api.anthropic.com | | Anthropic Messages | a slug your ChatGPT account lists | Codex backend | Messages→Responses translation, subscription auth | | Anthropic Messages | gpt-*, llama-*, … | OpenAI-compat backend | Anthropic→OpenAI translation, forwarded | | OpenAI Chat | gpt-* / o1-* / o3-* | OpenAI-compat backend | Auth swap, body forwarded byte-for-byte | | OpenAI Chat | a slug your ChatGPT account lists | Codex backend | chat/completions→Responses translation, subscription auth | | OpenAI Chat | claude-* | Claude backend | OpenAI→Anthropic translation, then Claude path | | Either | <provider>:<model> | Forced by prefix | Explicit override |

The tool doesn't know. The backend doesn't know. dario is the seam.

The full Claude lineup, autodetected. Fable 5, Opus 5, Sonnet 5, and Haiku 4.5 — plus [1m] long-context variants on every family except haiku — by full id (claude-opus-5) or shortcut (fable / opus / sonnet / haiku, append 1m for the long-context form; opus48 / opus47 / opus46 / sonnet46 pin a specific generation and never float). GET /v1/models reads Anthropic's live catalog (TTL-cached, baked fallback when offline), so a new model resolves the day it lands with no dario release, and the model-specific request shape is applied automatically. The TUI's Status tab lists whatever the catalog currently advertises, so it tracks the same set without a release either. Families pulled upstream are filtered from both the live catalog and the fallback so /v1/models never advertises a model that 404s — reversible via DARIO_SUSPENDED_MODELS if a family is ever pulled again.

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ChatGPT subscription accounts (Codex engine)

Your ChatGPT Plus/Pro plan, served on both of dario's endpoints — so any client that speaks /v1/chat/completions can use it (Codex CLI, the OpenAI SDKs, your own scripts), and so can any client that speaks /v1/messages (Claude Code, the Anthropic SDKs, agent runtimes). The harness does not need to know which subscription is behind it.

dario add altman            # prints an authorize URL; paste the redirect URL back
dario codex list
dario codex remove altman

dario add altman names whose plan you are attaching; dario add amodei attaches a Claude account instead. dario codex add <name> is the same command and still works.

The browser lands on a localhost page that doesn't load — that's expected, nothing is listening there. Copy the whole address bar and paste it at the prompt; dario reads the code out of it. A bare code (or code#state) works too.

Once an account is stored, a request naming a model that account may use is served from the subscription — on either endpoint:

curl localhost:3456/v1/models | jq -r '.data[].id'
curl localhost:3456/v1/chat/completions -H 'content-type: application/json' \
  -d '{"model":"gpt-5.5","messages":[{"role":"user","content":"hi"}]}'

# same subscription, Anthropic wire shape — this is what Claude Code speaks
curl localhost:3456/v1/messages -H 'content-type: application/json' \
  -d '{"model":"gpt-5.5","max_tokens":64,"messages":[{"role":"user","content":"hi"}]}'

Model names are discovered, not hardcoded. The set a ChatGPT subscription may use is per-account and moves; dario asks the backend which models this account lists, caches the answer, and advertises them on GET /v1/models so a client's model picker finds them. Anything not