cost-model SKILL.md skillA
cost-model from avelikiy/great_cto is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add avelikiy/great_cto/cost-model@git:20260528.4d681c0Pins git:20260528.4d681c0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- avelikiy/great_cto
- Path
skills/cost-model/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260528.4d681c0, committed May 28, 2026
- First version recorded
- May 14, 2026
- Size
- 5,145 bytes
- Repository stars
- 105
- License
- MIT
Standardized cost-estimation framework for great_cto plans. Forces explicit LLM cost, infra cost, human-supervision time, and the (defensible) human-equivalent comparison. Output format is parsable by the board's /api/cost path — must follow exactly.
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
# Cost model — make cost claims defensible great_cto reports cost numbers on the board. Those numbers MUST be auditable, because a wrong "7,638×" claim killed credibility (see docs/blog/cost-dashboard-rebuild.md). This skill defines the format. ## The 4-line cost section Every PLAN-*.md and ARCH-*.md cost section follows this exact template: ```markdown ## Cost estimate **LLM**: $<low>–<high> (<N> calls × $<per-call avg>) **Human equiv**: $<low>–<high> (<hours> × $<rate>/h) **Infra delta**: $<low>–<high>/month **Time to ship**: <hours> agent-time, <hours> wall-clock > Methodology: <one-sentence rationale for each range> ``` ### Why this exact format? The board's `getCostHistory()` parser anchors on **line-start** "LLM" and "Human" labels. Mid-line references are ignored to prevent the $240-trap regression. Stick to the template. ## How to estimate each line ### LLM cost For each agent in the pipeline, estimate: - **Prompt tokens** = (system prompt size) + (context the agent receives) - **Completion tokens** = (typical output for that agent type) Quick reference for Sonnet 4 ($3/M in, $15/M out): | Agent | Typical prompt | Typical output | Per-call cost | …
Read the whole file at its exact version.
How to install
mdr add avelikiy/great_cto/cost-model@sha256:e08f05349aa0c414The line at the top of this page pins the label git:20260528.4d681c0, 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_i4u6qv65pks24bes)
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Versions
The registry has recorded 2 versions of this file, between May 14, 2026 and May 28, 2026, about one every 14 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260528.4d681c0 latest | 2026-05-28 | 4d681c0 | 5,145 B | A | view · diff |
| git:20260514.ca9e7a0 | 2026-05-14 | ca9e7a0 | 5,133 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 (5145 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
avelikiy/great_cto · 105 stars · license MIT · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_i4u6qv65pks24bes GET https://markdownregistry.com/api/v1/resolve?ref=avelikiy/great_cto/cost-model GET https://markdownregistry.com/api/v1/blob/e08f05349aa0c41433c4440767a7491ac0e37fd4e3830b14459a44c73142e10f
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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