Agent skill

Add Model Price

by langfuse in langfuse/langfuse

A skill your agent uses when editing worker/src/constants/default-model-prices.json, packages/shared/src/server/llm/types.ts, pricing tiers, tokenizer IDs, or matchPattern regexes for OpenAI…

Custom licenceAuto-check passedAI & LLM Engineering

Install Add Model Price

skills CLI
$ npx skills add langfuse/langfuse --skill add-model-price -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install langfuse/langfuse add-model-price --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/langfuse/langfuse.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/add-model-price .claude/skills/add-model-price && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
add-model-price
GitHub stars
36k
Token cost
~1.2k tokens
SKILL.md length
418 words
Files
11 (incl. scripts, references)
Skills in repo
33
Repo updated
First seen
Licence
Custom licence

At a glance

A skill your agent uses when editing worker/src/constants/default-model-prices.json, packages/shared/src/server/llm/types.ts, pricing tiers, tokenizer IDs, or matchPattern regexes for OpenAI…

  • Editing worker/src/constants/default-model-prices.json
  • SKILL.md covers When to Apply, How to Read This Skill, Quick Start Checklist and Reference Map, plus 1 more section
  • Runs JavaScript scripts from its folder; calls node
  • Packages/shared/src/server/llm/types.ts

What it does

Add Model Price is an agent skill from langfuse/langfuse. Use when editing worker/src/constants/default-model-prices.json, packages/shared/src/server/llm/types.ts, pricing tiers, tokenizer IDs, or matchPattern regexes for OpenAI, Anthropic, Bedrock, Vertex, Azure, or Gemini model pricing.

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 12 other files, including scripts and reference files (for example `references/automated-audit.md`, `references/match-patterns.md` and `references/model-audit-memory.md`).

It sits in AI & LLM Engineering, covering Pricing strategy. It works with Microsoft Azure, Langfuse and OpenAI. The repository describes itself as: 🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.

When your agent uses it

  • Editing worker/src/constants/default-model-prices.json
  • Packages/shared/src/server/llm/types.ts
  • MatchPattern regexes for OpenAI
  • Gemini model pricing

Example prompts

  • “/add-model-price”

Requirements

  • Node.js

What it can do on your machine

Read from SKILL.md and the folder at commit 389f393. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 3 files in scripts/ (JavaScript), which the agent can run.

    Shell commands in SKILL.md call:

    • node

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Add Model Price loads about 1.2k tokens when it runs, and up to ~39k if it reads all its reference files. Until then it costs about 62 tokens; SKILL.md has 418 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~62
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~39k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 418 words (~1,233 tokens).

“Use this skill for model pricing changes in worker/ and shared LLM type updates in packages/shared/.”

— opening of SKILL.md by langfuse, Custom licence
name
add-model-price

Read the full SKILL.md on GitHub

Files

SKILL.md and 10 other files (scripts, references) in .agents/skills/add-model-price of langfuse/langfuse.

  • SKILL.md
  • references/automated-audit.md
  • references/match-patterns.md
  • references/model-audit-memory.md
  • references/provider-sources-and-price-keys.md
  • references/provider-usage-key-matrix.md
  • references/schema-and-tiers.md
  • references/workflow-and-validation.md
  • scripts/test-match-pattern.mjs
  • scripts/validate-pricing-file.mjs
  • scripts/validate-pricing-file.test.mjs

Open the folder on GitHubat commit 389f393

Compare with similar skills

Add Model Price next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Add Model Price compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Add Model Price this skilllangfuse/langfuse36k—~1.2kAutomated safety check: PassCustom licence
Azure Openai To Responsesmicrosoft/ai-agents-for-beginners77k—~6kAutomated safety check: NotesMIT
Agent Prompt Engineeringagentailor/fullstack-langgraph-nextjs-agent132—~3.6kAutomated safety check: PassMIT
Azure Openai To Responsesmicrosoft/ai-agents-for-beginners77k—~6kAutomated safety check: NotesMIT
Azure AI Projects Python SDKmicrosoft/skills3.1k—~2.8kAutomated safety check: PassMIT
Agent Eval Casesagentailor/fullstack-langgraph-nextjs-agent132—~5.3kAutomated safety check: PassMIT

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Questions about Add Model Price

What does Add Model Price do?

A skill your agent uses when editing worker/src/constants/default-model-prices.json, packages/shared/src/server/llm/types.ts, pricing tiers, tokenizer IDs, or matchPattern regexes for OpenAI…. Add Model Price is an agent skill from langfuse/langfuse.ts, pricing tiers, tokenizer IDs, or matchPattern regexes for OpenAI, Anthropic, Bedrock, Vertex, Azure, or Gemini model pricing.

When should I use Add Model Price?

Add Model Price fits situations like: editing worker/src/constants/default-model-prices.json; packages/shared/src/server/llm/types.ts; matchPattern regexes for OpenAI; gemini model pricing.

How do I install Add Model Price in Claude Code?

Run `npx skills add langfuse/langfuse --skill add-model-price -a claude-code`. Or copy the skill folder (.agents/skills/add-model-price in langfuse/langfuse) into .claude/skills/add-model-price in your project. Claude Code loads it when a task matches its description.

How do I install Add Model Price in Codex?

Run `npx skills add langfuse/langfuse --skill add-model-price -a codex`. Or copy the skill folder (.agents/skills/add-model-price in langfuse/langfuse) into .agents/skills/add-model-price in your project. Codex loads it when a task matches its description.

Can I use Add Model Price in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add langfuse/langfuse --skill add-model-price -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/add-model-price, .gemini/skills/add-model-price, .github/skills/add-model-price and .opencode/skills/add-model-price in your project.

What does Add Model Price need to run?

Going by SKILL.md and its folder, Add Model Price needs JavaScript for the scripts in its folder and the command-line tools its instructions call (node). Our summary lists: Node.js.

Does Add Model Price access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Add Model Price safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Add Model Price use?

Add Model Price has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Add Model Price use?

About 1.2k tokens (SKILL.md is roughly 4.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 38k tokens, read only when the agent opens those files.

What are the alternatives to Add Model Price?

Skills that share tags, products or a category with Add Model Price: Azure Openai To Responses (microsoft/ai-agents-for-beginners, 77k stars), Agent Prompt Engineering (agentailor/fullstack-langgraph-nextjs-agent, 132 stars), Azure Openai To Responses (microsoft/ai-agents-for-beginners, 77k stars) and Azure AI Projects Python SDK (microsoft/skills, 3.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Add Model Price?

langfuse (a GitHub organization) maintains it in langfuse/langfuse, which has 35,555 GitHub stars. The repository holds 33 skills in this directory. The repository was last updated on October 9, 2026.

Source: langfuse/langfuse on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.