Borrowing it
Nothing to install: this file belongs to mark3labs/mcphost. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/mark3labs/mcphost/main/.agents/skills/btca-cli/SKILL.mdgit clone --depth 1 https://github.com/mark3labs/mcphostWrote 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/mark3labs/mcphost/btca-cli)<a href="https://agentmods.dev/skills/mark3labs/mcphost/btca-cli"><img src="https://agentmods.dev/badge/skills/mark3labs/mcphost/btca-cli/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/mark3labs/mcphost/btca-cli"><img src="https://agentmods.dev/badge/skills/mark3labs/mcphost/btca-cli.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 | $0.00070 | $0.00512 |
| Opus 5.5 | $0.00028 | $0.00205 |
| Sonnet 5.5 | $0.00014 | $0.00102 |
| Haiku 4.5 | $0.00007 | $0.00051 |
Grade A, and why
btca-cli 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 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.
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.
Copies of this mod
1 near-identical copy found in the catalogue:
- btca-cli — 100% identical, 0 lines differ
What it actually says
btca CLI
btca is a source-first research CLI. It hydrates resources (git, local, npm) into searchable context, then answers questions grounded in those sources. Use configured resources for ongoing work, or one-off anonymous resources directly in btca ask.
Full CLI reference: https://docs.btca.dev/guides/cli-reference
Add resources:
# Git resource
btca add -n svelte-dev https://github.com/sveltejs/svelte.dev
# Local directory
btca add -n my-docs -t local /absolute/path/to/docs
# npm package
btca add npm:@types/[email protected] -n node-types -t npm
Verify resources:
btca resources
Ask a question:
btca ask -r svelte-dev -q "How do I define remote functions?"
Common Tasks
- Ask with multiple resources:
btca ask -r react -r typescript -q "How do I type useState?"
- Ask with anonymous one-off resources (not saved to config):
# One-off git repo
btca ask -r https://github.com/sveltejs/svelte -q "Where is the implementation of writable stores?"
# One-off npm package
btca ask -r npm:[email protected] -q "How is useTransition exported?"
Config Overview
- Config lives in
btca.config.jsonc(project) and~/.config/btca/btca.config.jsonc(global). - Project config overrides global and controls provider/model and resources.
Troubleshooting
- "No resources configured": add resources with
btca add ...and re-runbtca resources. - "Provider not connected": run
btca connectand follow the prompts. - "Unknown resource": use
btca resourcesfor configured names, or pass a valid HTTPS git URL /npm:<package>as an anonymous one-off inbtca ask.
What ships with it
1 file 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.
- 2mo ago First seen · 65 lines · 70 tokens per session scan A de15feb1114a
btca-cli is a skill published in the GitHub repository mark3labs/mcphost (1,591 stars, last pushed 6mo ago), licensed MIT. It adds 70 tokens to every session and 512 once invoked, about $0.0003 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 2026-08-30.
btca-cli compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| btca-climark3labs/mcphost | Skill | 1.6k | 6mo ago | MIT | A | 70 | Codex |
| imagegenopenai/codex | Skill | 133k | yesterday | Apache-2.0 | A | 113 | Codex |
| playwright-climicrosoft/playwright | Skill | 99k | yesterday | Apache-2.0 | A | 19 | Claude Code |
| local-ai-agentsmicrosoft/ai-agents-for-beginners | Skill | 79k | 4d ago | MIT | A | 200 | Claude Code, Codex |
| systematic-debuggingobra/superpowers | Skill | 313k | 3d ago | MIT | A | 21 | Claude Code |
| next-cache-components-adoptionvercel/next.js | Skill | 143k | today | MIT | A | 95 | Claude Code |
| next-partial-prefetching-adoptionvercel/next.js | Skill | 143k | today | MIT | A | 103 | Claude Code |