llm-cost-optimizer SKILL.md skillA
llm-cost-optimizer from vellum-ai/vellum-assistant is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add vellum-ai/vellum-assistant/llm-cost-optimizer@git:20260901.63b6d83Pins git:20260901.63b6d83 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- vellum-ai/vellum-assistant
- Path
skills/llm-cost-optimizer/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260901.63b6d83, committed Sep 1, 2026
- First version recorded
- Jul 10, 2026
- Size
- 15,825 bytes
- Repository stars
- 1,467
- License
- MIT
Analyze and reduce LLM spend: read usage breakdowns by call site, model, and inference profile, understand single-winner profile resolution, and pin call sites to managed profiles (Balanced / Quality / Budget / Fast) only where they should deviate from shipped defaults.
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
## Overview This skill walks through analyzing and reducing LLM spend on a Vellum assistant. There are three layers: 1. **Provider connections** — named auth configs (e.g. `anthropic-managed`, `my-personal-key`) 2. **Model profiles** — named presets (provider + model + effort + thinking + contextWindow). Four managed defaults, with UI labels. Note that the keys do not track the labels: read the key, not the name, when pinning a call site. - `balanced` → **Balanced** (the general agent-loop profile) - `quality-optimized` → **Quality** (the expensive escalation profile) - `cost-optimized` → **Budget** (the cheap utility/background profile, and the one to pin for spend reduction) - `latency-optimized` → **Fast** (the low time-to-first-token profile, used by live voice; faster but not cheaper than Budget) 3. **Call-site profile pins** (`llm.callSites.<id>.profile`) — optional per-task overrides of the shipped defaults. …
Read the whole file at its exact version.
How to install
mdr add vellum-ai/vellum-assistant/llm-cost-optimizer@sha256:e57dc0405c50a5adThe line at the top of this page pins the label git:20260901.63b6d83, 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_6hck2g3e6x4ljiuh)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jul 10, 2026 and Sep 1, 2026, about one every 13 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260901.63b6d83 latest | 2026-09-01 | 63b6d83 | 15,825 B | A | view · diff |
| git:20260804.c3f0775 | 2026-08-04 | c3f0775 | 15,821 B | A | view · diff |
| git:20260803.3a7ba23 | 2026-08-03 | 3a7ba23 | 15,590 B | A | view · diff |
| git:20260728.c81c65f | 2026-07-28 | c81c65f | 15,316 B | A | view · diff |
| git:20260710.4eb47ce | 2026-07-10 | 4eb47ce | 13,324 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (15825 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 prompt-injection phrasing
- 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
Source
vellum-ai/vellum-assistant · 1,467 stars · license MIT · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_6hck2g3e6x4ljiuh GET https://markdownregistry.com/api/v1/resolve?ref=vellum-ai/vellum-assistant/llm-cost-optimizer GET https://markdownregistry.com/api/v1/blob/e57dc0405c50a5ad822a164d6dea6201565151e0edc2093bf79f46d3fefb4161
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.
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