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agentcents

agentcents is a skill for Claude Code, Codex from labham-llc/agentcents-skill. It costs 159 tokens per session (1,982 once invoked), scanned A, original, no licence file.

A skill for estimating the cost of language-model API calls or agent workflows across models such as Claude, GPT, Gemini, and local Ollama. It can recommend the cheapest model that meets the task's capability needs and show the comparison as a Mermaid diagram.

In plain words
What is it for?
Use it to estimate prompt or workflow costs, compare candidate models, choose a lower-cost suitable model, and create a cost comparison diagram.
Why use it?
It helps compare model costs and avoid choosing a more expensive model than the task requires.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 0repo 3mo ago A scan 159 tokens no licence

Good fit Use it to estimate prompt or workflow costs, compare candidate models, choose a lower-cost suitable model, and create a cost comparison diagram.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/labham-llc/agentcents-skill/agentcents
View source ↗ labham-llc/agentcents-skill labham.com
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add labham-llc/agentcents-skill --skill agentcents
Clone the repo
git clone --depth 1 https://github.com/labham-llc/agentcents-skill

Made for: Claude Code, Codex.

Its marketplace also offers this one on its own, as the plugin agentcents — /plugin install agentcents after adding the marketplace above.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for agentcents

README.md
[![agentmods](https://agentmods.dev/badge/skills/labham-llc/agentcents-skill/agentcents/github.svg)](https://agentmods.dev/skills/labham-llc/agentcents-skill/agentcents)
Your own site
<a href="https://agentmods.dev/skills/labham-llc/agentcents-skill/agentcents"><img src="https://agentmods.dev/badge/skills/labham-llc/agentcents-skill/agentcents/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for agentcents

Your own site · 80×15
<a href="https://agentmods.dev/skills/labham-llc/agentcents-skill/agentcents"><img src="https://agentmods.dev/badge/skills/labham-llc/agentcents-skill/agentcents.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 159 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,982 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00159 $0.01982
Opus 5.5 $0.00064 $0.00793
Sonnet 5.5 $0.00032 $0.00396
Haiku 4.5 $0.00016 $0.00198

Measured 2mo ago against content hash dca26c41a7f6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agentcents scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -sf -m 2 http://localhost:8082/health && echo LIVE || command -v agentcents
skills/agentcents/SKILL.md · 182 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 182 lines · 159 tokens per session scan A dca26c41a7f6

Subscribe to this mod's changes

agentcents is a skill published in the GitHub repository labham-llc/agentcents-skill (0 stars, last pushed 3mo ago), with no licence file. It adds 159 tokens to every session and 1,982 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Analytics and metricsCost OptimizationLLMai-agentsclaudeclaude-skillmcp
Related

agentcents compared with skills from other repositories

agentcents next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
agentcentslabham-llc/agentcents-skillSkill03mo agononeA159Claude Code, Codex
lynkrFast-Editor/LynkrSkill6392d agoApache-2.0A50Claude Code, Codex
mdma-integrationMobileReality/mdmaSkill7516d agoMITA111Claude Code, Codex
model-routeroyi77/1ai-skillsSkill17yesterdayMITA39Claude Code
lookup-topicSmart-AI-Memory/attune-aiSkill112d agoApache-2.0A46Claude Code
lookupSmart-AI-Memory/attune-aiSkill112d agoApache-2.0A43Claude Code
delegate-localIsmaelMartinez/delegate-localSkill8yesterdayMITA0Claude Code