How to get an Anthropic API key
Claude straight from your browser — free starter credits to test, then a $5 minimum top-up.
What it is, and when to pick it
Anthropic makes Claude — the strongest writing quality per dollar in this lineup (Claude Haiku 4.5 for fast and affordable, Sonnet 4.5 for best quality). Pick Anthropic when the wording of your resume matters more than the absolute lowest price. Browser use is first-class here: the tool sends Anthropic’s documented anthropic-dangerous-direct-browser-access opt-in header, so there is no proxy in the middle.
Step by step
Create an account at the Anthropic Console. console.anthropic.com
Open Settings → API keys and click “Create Key”. console.anthropic.com/settings/keys
Copy the key right away — it starts with
sk-ant-and the Console shows it only once.New Console accounts start with free starter credits; when they run out, top-ups start at $5 (Settings → Billing).
What the key looks like
sk-ant-…Shown only once — if you lose it, revoke the old key and create a new one.
What it actually costs
- New Console accounts start with free starter credits — enough to test the tool.
- After the starter credits, top-ups start at $5 (minimum).
- Claude Haiku 4.5: about $1 / $5 per million tokens in/out (estimates sampled 2026-11-14) — a tailored resume typically costs a few cents.
- Claude Sonnet 4.5: about $3 / $15 per million tokens — best quality, use it for the final pass.
Paste it into Practical Web Tools
In the AI resume tailor, choose Anthropic in the provider list and paste the sk-ant-… key. The tool adds the anthropic-dangerous-direct-browser-access header for you — that is Anthropic’s documented opt-in for browser use, not a workaround. Open the AI resume tailor.
If something goes wrong
- 401 — “That key was rejected”
- The key was revoked, mistyped, or from a different workspace. Create a fresh key at console.anthropic.com/settings/keys and re-paste it in full.
- 429 — “Provider rate limit hit”
- Anthropic applies tier-based rate limits. Wait the indicated time and run again; smaller models (Haiku) carry higher limits than Sonnet.
- Could not reach the provider (network / CORS)
- Anthropic’s browser opt-in is already wired into the tool (verified 2026-11-14). If calls still fail, check for a blocking extension or corporate proxy and try a clean window.