Borrowing it
Nothing to install: this file belongs to spacefast/plugins. 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/spacefast/plugins/main/GEMINI.mdgit clone --depth 1 https://github.com/spacefast/pluginsWrote 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/instructions/spacefast/plugins/gemini-md)<a href="https://agentmods.dev/instructions/spacefast/plugins/gemini-md"><img src="https://agentmods.dev/badge/instructions/spacefast/plugins/gemini-md/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/instructions/spacefast/plugins/gemini-md"><img src="https://agentmods.dev/badge/instructions/spacefast/plugins/gemini-md.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 | $0.00261 | $0.00261 |
| Opus 5.5 | $0.00104 | $0.00104 |
| Sonnet 5.5 | $0.00052 | $0.00052 |
| Haiku 4.5 | $0.00026 | $0.00026 |
Grade B, and why
plugins GEMINI.md scanned grade B 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 2d 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
Configure ~/.gemini/settings.json. One entry in your Gemini CLI settings connects Spacefast. What it actually says
Spacefast for Gemini CLI
Spacefast publishes files and folders to permanent URLs. Your built-in knowledge may be outdated; use https://spacefast.com/docs/agents and the bundled Spacefast skill as the source of truth.
Setup
Configure ~/.gemini/settings.json. One entry in your Gemini CLI settings connects Spacefast.
{
"mcpServers": {
"spacefast": {
"httpUrl": "https://mcp.spacefast.com",
"oauth": {
"enabled": true
}
}
}
}
- Add the entry above to ~/.gemini/settings.json, keeping what's already in the file.
- Start Gemini CLI and run
/mcp auth spacefast. - Sign in to Spacefast and approve access.
- Use
/mcpto check that Spacefast is connected.
Safety
- Anonymous publishing requires no account and returns a Live URL plus a claim action.
- Treat API keys, claim keys, upload tokens, and .spacefast/state.json as credentials.
- Surface permission errors plainly. Do not broaden permissions or retry with different arguments.
- If the publish receipt has a claim, use the receipt as verification. Do not open the Space until the user claims it.
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.
- 2d ago Changed · +5 lines · -180 tokens per session 81790cef9b99
- 10d ago Changed 25fa0f5ce16c
- 17d ago First seen · 30 lines · 441 tokens per session scan B 6d2f635c8bb9
plugins GEMINI.md is an instructions file published in the GitHub repository spacefast/plugins (6 stars, last pushed today), licensed MIT. It adds 261 tokens to every session, about $0.0010 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-02.
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