atlas-backtest

atlas-backtest is a skill for Claude Code from finmanagerai/atlas-mcp-server. It costs 117 tokens per session (1,642 once invoked), scanned A, original, no licence file.

A backtesting workflow for checking whether a trading idea would have worked on past market data. Backtesting means simulating a strategy on historical prices before using it with real money.

In plain words
What is it for?
Use it to test ideas such as moving-average rules on SPY across several scenarios using Atlas market data.
Why use it?
It makes the test rules, costs, withheld periods, trade count, and comparison with simply holding the asset explicit, reducing misleading results.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the mindvest-atlas plugin — 9 skills, 1 MCP server shipped together

Good fit Use it to test ideas such as moving-average rules on SPY across several scenarios using Atlas market data.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/finmanagerai/atlas-mcp-server/atlas-backtest
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 finmanagerai/atlas-mcp-server --skill atlas-backtest
Clone the repo
git clone --depth 1 https://github.com/finmanagerai/atlas-mcp-server

Made for: Claude Code.

Or install mindvest-atlas, the plugin that ships this one along with the rest of its 9 skills, 1 MCP server.

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 atlas-backtest

README.md
[![agentmods](https://agentmods.dev/badge/skills/finmanagerai/atlas-mcp-server/atlas-backtest/github.svg)](https://agentmods.dev/skills/finmanagerai/atlas-mcp-server/atlas-backtest)
Your own site
<a href="https://agentmods.dev/skills/finmanagerai/atlas-mcp-server/atlas-backtest"><img src="https://agentmods.dev/badge/skills/finmanagerai/atlas-mcp-server/atlas-backtest/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 atlas-backtest

Your own site · 80×15
<a href="https://agentmods.dev/skills/finmanagerai/atlas-mcp-server/atlas-backtest"><img src="https://agentmods.dev/badge/skills/finmanagerai/atlas-mcp-server/atlas-backtest.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 117 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,642 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00117 $0.01642
Opus 5.5 $0.00047 $0.00657
Sonnet 5.5 $0.00023 $0.00328
Haiku 4.5 $0.00012 $0.00164

Measured 3d ago against content hash b120cffcd622, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

atlas-backtest 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 3d 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.

plugin/skills/atlas-backtest/SKILL.md · 124 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

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. 3d ago First seen · 124 lines · 117 tokens per session scan A b120cffcd622

Subscribe to this mod's changes

atlas-backtest is a skill published in the GitHub repository finmanagerai/atlas-mcp-server (0 stars, last pushed today), with no licence file. It adds 117 tokens to every session and 1,642 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 2026-11-04.

Related

atlas-backtest compared with skills from other repositories

atlas-backtest next to 6 skills from other repositories
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