modelSupportOverrides.ts

utils/model/modelSupportOverrides.ts

modes

Lines

1537

Bytes

Exports

Imports

Keywords

What this is

This page documents one file from the repository and includes its full source so you can read it without leaving the docs site.

Beginner explanation

This file is one piece of the larger system. Its name, directory, imports, and exports show where it fits. Start by reading the exports and related files first.

How it is used

Start from the exports list and related files. Those are the easiest clues for where this file fits into the system.

Expert explanation

Architecturally, this file intersects with modes. It contains 51 lines, 2 detected imports, and 2 detected exports.

Important relationships

Detected exports

ModelCapabilityOverride
get3PModelCapabilityOverride

Keywords

modelcapabilitymodelenvvarcapabilitiesenvvarpinnedtolowercasememoizetiercapabilitiesgetapiprovider

Detected imports

lodash-es/memoize.js
./providers.js

Source notes

This page embeds the full file contents. Small or leaf files are still indexed honestly instead of being over-explained.

Open parent directory

Full source

import memoize from 'lodash-es/memoize.js'
import { getAPIProvider } from './providers.js'

export type ModelCapabilityOverride =
  | 'effort'
  | 'max_effort'
  | 'thinking'
  | 'adaptive_thinking'
  | 'interleaved_thinking'

const TIERS = [
  {
    modelEnvVar: 'ANTHROPIC_DEFAULT_OPUS_MODEL',
    capabilitiesEnvVar: 'ANTHROPIC_DEFAULT_OPUS_MODEL_SUPPORTED_CAPABILITIES',
  },
  {
    modelEnvVar: 'ANTHROPIC_DEFAULT_SONNET_MODEL',
    capabilitiesEnvVar: 'ANTHROPIC_DEFAULT_SONNET_MODEL_SUPPORTED_CAPABILITIES',
  },
  {
    modelEnvVar: 'ANTHROPIC_DEFAULT_HAIKU_MODEL',
    capabilitiesEnvVar: 'ANTHROPIC_DEFAULT_HAIKU_MODEL_SUPPORTED_CAPABILITIES',
  },
] as const

/**
 * Check whether a 3p model capability override is set for a model that matches one of
 * the pinned ANTHROPIC_DEFAULT_*_MODEL env vars.
 */
export const get3PModelCapabilityOverride = memoize(
  (model: string, capability: ModelCapabilityOverride): boolean | undefined => {
    if (getAPIProvider() === 'firstParty') {
      return undefined
    }
    const m = model.toLowerCase()
    for (const tier of TIERS) {
      const pinned = process.env[tier.modelEnvVar]
      const capabilities = process.env[tier.capabilitiesEnvVar]
      if (!pinned || capabilities === undefined) continue
      if (m !== pinned.toLowerCase()) continue
      return capabilities
        .toLowerCase()
        .split(',')
        .map(s => s.trim())
        .includes(capability)
    }
    return undefined
  },
  (model, capability) => `${model.toLowerCase()}:${capability}`,
)