Feature Description

Add a picker_providers config option under the model: key to control which providers appear in the /model picker output. This allows users who exclusively use custom endpoints to hide built-in provider entries (Anthropic, OpenRouter, etc.) that auto-detect via OAuth/env credentials.

Motivation

Our setup uses a single custom provider (AgentOne) with 23 models. The picker also shows Anthropic (8 models) because Claude Code OAuth credentials exist on disk (~/.claude/.credentials.json). This is confusing — we never use Anthropic through Hermes.

Current picker output:

custom:agentone    models=23  source=user-config
anthropic          models= 8  source=hermes

There is no way to hide the Anthropic entry. The only workaround would be deleting the Claude Code credentials file, which breaks Claude Code itself.

Proposed Solution

Add a picker_providers list to config.yaml:

model:
  default: glm-5-zai
  provider: custom
  picker_providers:
    - custom        # only show custom providers

Behavior

Implementation

In hermes_cli/model_switch.py, function list_authenticated_providers():

1. Read picker_providers from config (passed through or read from config)
2. After building the full results list, before the final sort (around line 1145), filter results:

   if picker_providers:
       allowed = {p.lower() for p in picker_providers}
       results = [r for r in results if r["slug"].lower() in allowed]

3. The filter matches against provider slug (custom:agentone becomes custom, anthropic, etc.)

Files to modify

• hermes_cli/model_switch.py — add filter in list_authenticated_providers(), accept picker_providers param
• hermes_cli/config.py — add picker_providers to default config schema (default: null)
• Callers of list_authenticated_providers() — pass the new param from config

Size estimate

~15-20 lines of functional code + config schema entry. No new dependencies.

Alternatives Considered

1. hide_builtin_providers: true — simpler but less flexible (binary toggle)
2. Credential-based suppression — skip providers whose creds come from external OAuth files rather than explicit config. Too magical and fragile.
3. Upstream contribution — searched upstream issues + PRs, no existing request for provider filtering in the picker. Related but different: PR fix(model-picker): hide providers with no curated LLM models #7267 hides providers with 0 models.

Search Confirmation

Searched this repo:

• gh search issues "picker provider filter" — no matches
• gh search prs "picker provider" — 10 results, all about dedup/discovery, none about filtering by config
• Related: PR fix(model-picker): hide providers with no curated LLM models #7267 (hide 0-model providers), PRs fix(model): dedupe provider picker entries from config #10327/fix(model-picker): deduplicate providers across user-config and custom sections #12321 (dedup entries)