[ibrhmyi]

Closes #2446.

Kalshi added an optional key_type field ("ed25519" | "rsa") to POST /api_keys/generate (changelog, 2026-09-24). The cached spec (core/specs/kalshi/Kalshi.yaml v3.7.0) only models RSA key generation, so spec-generated clients cannot request Ed25519 keys.

Change

• GenerateApiKeyRequest gains an optional key_type: string with enum: [ed25519, rsa] and a description citing the changelog date — matching the file's inline-enum style; not added to required (additive per the drift report)
• No default asserted: secondary sources conflict on the omit-behavior, so the spec stays silent rather than inventing drift

Verification

• Premise checked before editing: key_type/ed25519 absent from the schema (grep), and the field confirmed against three independent API references
• Strict YAML parse (js-yaml via the repo's bun) confirms the schema path, type, exact enum, optionality, and that name remains required

AI assistance was used for this contribution (implementation and review).