model-selection SKILL.md skillB
model-selection from bradygaster/squad is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add bradygaster/squad/model-selection@git:20260910.61e2f81Pins git:20260910.61e2f81 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- bradygaster/squad
- Path
.copilot/skills/model-selection/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260910.61e2f81, committed Sep 10, 2026
- First version recorded
- Mar 20, 2026
- Size
- 8,047 bytes
- Repository stars
- 3,298
- License
- MIT
Per-agent model selection with 4-layer hierarchy and fallback chains.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
## Context
Before spawning an agent, the coordinator determines which model to use. This skill codifies the 4-layer hierarchy, role-to-model mappings, task complexity adjustments, and fallback chains. Applies to all agent spawns in Team Mode.
## Patterns
### 4-Layer Hierarchy
Check these layers in order — first match wins:
**Layer 1 — User Override:** Did the user specify a model? ("use opus", "save costs", "use gpt-5.3-codex for this"). If yes, use that model. Session-wide directives ("always use haiku") persist until contradicted.
**Layer 2 — Charter Preference:** Does the agent's charter have a `## Model` section with `Preferred` set to a specific model (not `auto`)? If yes, use that model.
**Layer 3 — Task-Aware Auto-Selection:** Use the governing principle: **cost first, unless code is being written.** Match the agent's task to determine output type, then select accordingly:
| Task Output | Model | Tier | Rule |
|-------------|-------|------|------|
| Writing code (implementation, refactoring, test code, bug fixes) | `gpt-5.6-terra` | Standard | Quality and accuracy matter for code. Use standard tier. |
…Read the whole file at its exact version.
How to install
mdr add bradygaster/squad/model-selection@sha256:7edbafbf74ae3beeThe line at the top of this page pins the label git:20260910.61e2f81, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ag7bwxgglmmcghjk)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Mar 20, 2026 and Sep 10, 2026, about one every 44 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260910.61e2f81 latest | 2026-09-10 | 61e2f81 | 8,047 B | B | view · diff |
| git:20260823.3699cb8 | 2026-08-23 | 3699cb8 | 8,023 B | B | view · diff |
| git:20260713.b970d04 | 2026-07-13 | b970d04 | 7,955 B | B | view · diff |
| git:20260713.d116099 | 2026-07-13 | d116099 | 7,779 B | B | view · diff |
| git:20260320.9081840 | 2026-03-20 | 9081840 | 7,971 B | B | view |
Audit of the latest version
- fail: No prompt-injection phrasing (matched: Do NOT tell the user)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8047 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
bradygaster/squad · 3,298 stars · license MIT · pushed 2026-10-22 · branch dev
API
GET https://markdownregistry.com/api/v1/artifacts/art_ag7bwxgglmmcghjk GET https://markdownregistry.com/api/v1/resolve?ref=bradygaster/squad/model-selection GET https://markdownregistry.com/api/v1/blob/7edbafbf74ae3beeee995965a40a4957fc15c0b7eb6e1885dbef31714dd421b6
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
More from bradygaster/squad
Every file in bradygaster/squad