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.
npx skills add The-Artificer-of-Ciphers-LLC/skills-from-the-artificer --skill cost-tier-routinggit clone --depth 1 https://github.com/The-Artificer-of-Ciphers-LLC/skills-from-the-artificerWrote 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.
[](https://agentmods.dev/skills/the-artificer-of-ciphers-llc/skills-from-the-artificer/cost-tier-routing)<a href="https://agentmods.dev/skills/the-artificer-of-ciphers-llc/skills-from-the-artificer/cost-tier-routing"><img src="https://agentmods.dev/badge/skills/the-artificer-of-ciphers-llc/skills-from-the-artificer/cost-tier-routing/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.
<a href="https://agentmods.dev/skills/the-artificer-of-ciphers-llc/skills-from-the-artificer/cost-tier-routing"><img src="https://agentmods.dev/badge/skills/the-artificer-of-ciphers-llc/skills-from-the-artificer/cost-tier-routing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00127 | $0.01216 |
| Opus 5.5 | $0.00051 | $0.00486 |
| Sonnet 5.5 | $0.00025 | $0.00243 |
| Haiku 4.5 | $0.00013 | $0.00122 |
Grade A, and why
cost-tier-routing scanned grade A with 0 findings 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 13d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cost-Tier Routing
Opus tokens cost ~5x sonnet and ~25x haiku. Doing Read and Grep on opus is lighting money on fire. This skill is the discipline for routing every action to the cheapest model that can do it correctly.
This skill requires three companion agents —
haiku-scout,haiku-importer, andsonnet-coder— installed in~/.claude/agents/. See this package'sREADME.mdfor the two-step install. The skill is inert without the agents because themodel:pin lives in the agent files, not here.
The rule
Before any of these actions in the main (opus) context, dispatch to a subagent instead:
| Action | Route to | Why |
|---|---|---|
Read more than 1–2 files in a row |
haiku-scout |
Bulk reads burn opus context |
Grep / Glob across the repo |
haiku-scout |
Mechanical lookup |
| "Where is X defined?" / "What references Y?" | haiku-scout |
Pure search |
| Count LOC, list files, read a config | haiku-scout |
Trivial IO |
| Convert/parse/split/merge data files | haiku-importer |
Mechanical transform |
| Download + parse a fixture or seed file | haiku-importer |
Mechanical IO |
| Write code at a known location with a known design | sonnet-coder |
Implementation, not design |
| Refactor a function with clear constraints | sonnet-coder |
Bounded edit |
| Run tests / typecheck after an edit | sonnet-coder (bundle with the edit) |
Don't bounce back to opus mid-task |
Keep on opus (the orchestrator):
- Architectural decisions, tradeoff analysis
- Reading subagent reports and deciding the next step
- Synthesis across multiple subagent outputs
- User-facing explanations and recommendations
Tool split (CodeGraph first, Memtrace for heavy hits). Use CodeGraph (codegraph_explore / codegraph CLI) for symbol lookup, file reads, callers/callees, and ordinary blast radius. Reserve Memtrace (and cortex) for git history/evolution, recall_decision, cross-repo/API topology, risky blast radius (get_impact), PR review evidence, and dead code/complexity, because Memtrace costs quota. If ~/.claude/state/memtrace-quota.json says blocked with a future until, never call Memtrace; use CodeGraph until that time.
What ships with it
6 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.
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.
- 13d ago Changed · +2 lines 5a9a60dfe592
- 1mo ago First seen · 66 lines · 127 tokens per session scan A f300ad465273
cost-tier-routing is a skill published in the GitHub repository The-Artificer-of-Ciphers-LLC/skills-from-the-artificer (6 stars, last pushed yesterday), licensed MIT. It adds 127 tokens to every session and 1,216 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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