
Developer who cares about aesthetics. Lead Software Engineer @finanzfluss
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ALT TypeScript code in a dark VS Code theme, lines 147–159 of an async run method: it ensures an "out" directory exists, loops over all subscriptions and awaits handleSubscription for each, then writes the SEPA debit sequences "FRST" and "RCUR" under the comment "// Chunk transactions", and finally logs "💰 Rendered SEPA direct debit files".
![Orange promo graphic titled "TOON v4 — The header now holds objects, not just single values." A code panel compares two versions: v3 needs nested indented lines per forecast entry (day, temp with min/max, condition, rainChance), while v4 declares all fields in one header line, `forecast[3]{day,temp{min,max},condition,rainChance}:`, followed by three compact CSV-style rows.](https://pbs.twimg.com/media/HRIw6TnWwAANfov.jpg?name=small&format=webp)
ALT Orange promo graphic titled "TOON v4 — The header now holds objects, not just single values." A code panel compares two versions: v3 needs nested indented lines per forecast entry (day, temp with min/max, condition, rainChance), while v4 declares all fields in one header line, `forecast[3]{day,temp{min,max},condition,rainChance}:`, followed by three compact CSV-style rows.

ALT TypeScript in a file named client.ts. It imports createClient and OpenAPIBuilder from apiful, then builds a client for the Swagger Petstore base URL by chaining two .with() calls: the first adds OpenAPIBuilder typed to the petStore schema, the second adds a custom pet method that calls client with the path /pet/{petId}, method GET and path parameter petId. The last line calls await api.pet(1), and a trailing comment shows the inferred type: an object with name of type string, further members elided, and an optional status of 'available', 'pending' or 'sold'.

ALT A terminal window titled apiful generate. The first command, npx apiful generate --check, fails with a red cross and the message "OpenAPI types are stale - run apiful generate to update them:", followed by an indented line reading "out of date: apiful.d.ts". The second command, npx apiful generate, succeeds with a green check and the message "OpenAPI types generated in apiful.d.ts (2 services)".

ALT Benchmark chart comparing real o200k_base token counts with tokenx estimates across eight samples: emoji-heavy chat, formatted and minified JSON, tokenx source code, and prose in English, German, Chinese and Japanese. Per-sample deviation ranges from +0.81% to +5.60%, with two underestimates at -3.13% and -2.57%. Mean deviation 3.45%.











