How to Share Claude API Access with Your Team

If you have Claude API access and need to let teammates use it too, you have three realistic options: hand out one shared API key, invite people to your Anthropic console workspace, or put a layer in front of the API that issues separate keys per person. Each has different tradeoffs for security, billing visibility, and how much setup you're willing to do.

The short answer: sharing a single raw API key is the fastest but riskiest option, Anthropic's built-in workspace roles work well for internal engineering teams, and a dedicated API layer is the right call when you need per-user usage tracking, revocable access, or you're exposing Claude to a product team rather than just developers. Below is what each actually involves.

Option 1: Share one API key

The simplest thing to do is paste your sk-ant-... key into a shared password manager or .env file and let everyone use it. This works for a two-person side project and fails almost immediately for anything bigger.

Problems you'll hit:

• No attribution. If usage spikes or a bug burns through your budget, you can't tell which teammate or script caused it.
• No revocation without disruption. Removing one person means rotating the key and redistributing it to everyone else.
• Accidental leaks. A key committed to a repo, pasted into a support ticket, or left in a client-side bundle is now usable by anyone who finds it, with no way to trace it back to a person.
• No per-person limits. You can't cap what one teammate or one integration spends without capping everyone.

If you're going this route anyway, at minimum keep the key server-side only, store it in a secrets manager (not a shared doc), and rotate it on a schedule. See our guide on key rotation practices for the general approach.

Option 2: Anthropic console workspace roles

Anthropic's console lets you invite members to an organization and assign roles (admin, developer, billing). This is the right choice if:

• Everyone who needs access is a developer comfortable managing their own API key
• You're fine with usage being billed centrally to the org
• You don't need fine-grained, per-teammate rate limits or usage dashboards outside of Anthropic's own console

This covers internal engineering teams well. It doesn't solve the problem of exposing Claude to non-technical teammates (support, ops, product) who need a stable HTTPS endpoint rather than raw API credentials, and it doesn't give you a clean way to issue scoped keys per application or per client project.

Option 3: Put an API layer in front of Claude

For most teams past the "just me and one other dev" stage, the practical answer is to stop distributing the underlying Claude credential entirely. Instead, one person (or the team's Anthropic account) holds the actual access, and everyone else gets their own application key that talks to a proxy in front of it.

This is what SubToAPI does: it turns your existing Claude access into a standard REST API with sub_live_... application keys. You create keys per teammate, per project, or per integration, and each one is independently revocable and trackable, without anyone needing the original Claude credential or console access.

A typical setup:

1. One person signs up and connects their Claude access at /signup
2. They create a sub_live_... key for each teammate or service under their account
3. Teammates use their own key against the same API surface

curl https://api.subtoapi.app/v1/messages \
  -H "Authorization: Bearer $SUBTOAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-4-5",
    "max_tokens": 512,
    "messages": [
      {"role": "user", "content": "Summarize this ticket in two sentences."}
    ]
  }'

Because every request carries a distinct key, you can see exactly who or what is generating usage, revoke a single key without touching anyone else's access, and give client projects or contractors scoped access without ever handing them your Claude credentials. Team and Scale plans add seats so you can manage this from a shared dashboard instead of one person's personal account — see /pricing for the seat structure.

This also matters if you're building something on top of Claude that other teammates will call from their own code: a support tool, an internal bot, a client-facing feature. Rather than baking a shared secret into multiple codebases, each service gets its own key and its own usage trail.

Streaming and tool use work the same way

If your team's use case includes streaming responses or tool calling, those work identically whether you're the only user or one of ten. Each teammate's key hits the same endpoints:

const response = await fetch("https://api.subtoapi.app/v1/messages", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.SUBTOAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "claude-sonnet-4-5",
    max_tokens: 1024,
    stream: true,
    messages: [{ role: "user", content: "Draft a release note for v2.3." }],
  }),
});

Full details on request formats are in /docs/messages, streaming setup in /docs/streaming, and tool definitions in /docs/tools. The quickstart covers getting your first key working end to end.

Choosing between the three

• Solo project, one or two trusted people: shared key is fine, just keep it server-side and rotate it.
• All-developer team, comfortable in the Anthropic console: workspace roles are sufficient.
• Mixed team, multiple projects, contractors, or you want per-person usage visibility: issue separate application keys through an API layer instead of distributing the underlying credential.

The deciding factor is usually whether you need to answer "who used what, and can I turn off just their access" without disrupting everyone else. Once that question matters, per-key access stops being a nice-to-have.

questions

Can I give a contractor temporary Claude API access without sharing my main key? Yes — issue them a separate application key scoped to your account, and revoke it when the engagement ends. This avoids rotating a shared credential for everyone else.

Does sharing Claude access this way cost more than one API key? Pricing depends on how you structure it. A layer like SubToAPI charges per seat (from €9 Solo up to €49/seat on Scale), while the underlying Claude usage is billed based on actual consumption regardless of how many keys you issue.

What's the difference between Anthropic console roles and per-key access via an API layer? Console roles give teammates access to the Anthropic dashboard and their own console-issued keys. A layer in front of the API instead issues application-specific keys tied to one underlying account, which is better for tracking usage by project or client rather than by console member.