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 PostOakLabs/ainumbers --skill perp-liquidation-what-ifgit clone --depth 1 https://github.com/PostOakLabs/ainumbersWrote 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/postoaklabs/ainumbers/perp-liquidation-what-if)<a href="https://agentmods.dev/skills/postoaklabs/ainumbers/perp-liquidation-what-if"><img src="https://agentmods.dev/badge/skills/postoaklabs/ainumbers/perp-liquidation-what-if/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/postoaklabs/ainumbers/perp-liquidation-what-if"><img src="https://agentmods.dev/badge/skills/postoaklabs/ainumbers/perp-liquidation-what-if.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 | $0.00046 | $0.00545 |
| Opus 5.5 | $0.00018 | $0.00218 |
| Sonnet 5.5 | $0.00009 | $0.00109 |
| Haiku 4.5 | $0.00005 | $0.00055 |
Grade A, and why
perp-liquidation-what-if 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 15d 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.
What it actually says
Perp liquidation what-if
Find where my perp gets liquidated across venues and see the full lifecycle scenario.
Prompt
Know your liquidation point from a deterministic model, not a dashboard screenshot.
- Write down the position: notional, entry, leverage, funding, margin. Synthetic numbers only.
- Call compute_perp_margin for the current state. Record the margin ratio and the maintenance threshold.
- Call model_perp_position across a price ladder (your entry down 5/10/20/50 percent, and up). Record the liquidation price the model returns and the funding drag per rung.
- Re-run the worst rung with funding doubled. Note how much the liquidation price moves; that sensitivity is your model risk.
- Call verify_execution_hash (send the artifact or its hash as claimed_hash) on the worst-run output to confirm the hash is the deterministic function of its inputs. Record it.
- build_session_receipt over the ladder runs; give me the ledger link.
- Write the note for yourself: the liquidation price, the funding sensitivity, and the ledger link, so the scenario is reproducible after the position is long gone. Call shape: every ChainGraph node tool takes its arguments nested under one wrapper object, e.g. {"policy_parameters": { ... }}; flat arguments are discarded by schema validation. If a named tool is not in your tool list, call call_tool with { "name": "", "arguments": { … } }. It runs the same validation and returns the same receipt.
How to run
Connect an MCP-capable host to https://mcp.ainumbers.co/mcp, then give the prompt above to the assistant.
Use synthetic inputs only. Never paste personal or production data.
Verify what came back
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.
- 15d ago Changed 8083271fb131
- 19d ago First seen · 40 lines · 46 tokens per session scan A 32d2f4f61049
perp-liquidation-what-if is a skill published in the GitHub repository PostOakLabs/ainumbers (11 stars, last pushed yesterday), licensed MIT. It adds 46 tokens to every session and 545 once invoked, about $0.0002 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 2026-09-27.
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