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 agentmods add skills/jeanfbrito/rocket-cli/rocket-sendnpx skills add jeanfbrito/rocket-cli --skill rocket-sendgit clone --depth 1 https://github.com/jeanfbrito/rocket-cliWhat 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 | $0.00113 | $0.00875 |
| Opus 5 | $0.00056 | $0.00438 |
| Sonnet 5 | $0.00023 | $0.00175 |
| Haiku 4.5 | $0.00011 | $0.00088 |
Grade A, and why
rocket-send 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 yesterday.
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 — 39 lines — stays where its author put it; the contents beside it link to each section on GitHub.
rocket-send
Write actions: send, reply, react, upload. Confirm before anything hits the server. Always return the resulting permalink.
Transport
- Prefer MCP when connected:
send_message,add_reaction,upload_file, pluslist_custom_emojis/get_custom_emojifor emoji resolution andopen_urlto resolve a pasted target. - Otherwise shell out:
rocket-cli send <target> [text…] --json,rocket-cli upload <room> <file> --json. (Reactions are MCP-first; if noreactCLI subcommand is available, fall back to drafting.) - Multi-server:
--profile <name>(CLI) orROCKET_CLI_PROFILE(MCP env). Confirm which server when ambiguous.
Read-only degradation (check first)
The write tools (send_message, add_reaction, upload_file) are only registered when the profile permits them. On a read-only profile they are absent. If a write tool is unavailable (not in the tool list, or the call fails with a permission/capability error), do NOT keep retrying — switch to drafting: compose the exact message and tell the user to send it themselves (or switch profiles). Never silently fail.
Workflow
- Resolve the target.
#channel,@username(opens/uses a DM), a room name, or a room id all work directly as thetarget/roomarg.- If the user pasted a message or thread link, run
open_urlto extract the room and the message/thread id.
- Decide thread vs. room. When replying to a thread message, reply IN the thread: pass that thread parent's id as
threadId(alsotmidin raw API terms). Prefer in-thread replies when responding to anything thread-shaped, rather than posting to the room root. - Confirm before sending. Show the user the exact target and exact text and get a go-ahead BEFORE calling any write tool — UNLESS the user already supplied both exact text and an unambiguous target, in which case proceed.
- Send the right action:
- Message / reply →
send_message(params:target,textnon-empty,threadId?). Custom emoji in text use:name:— confirm the name vialist_custom_emojisif unsure. - Reaction →
add_reaction(params:messageId— an id or a pasted message link;emoji—thumbsupor:thumbsup:;removedefault false to withdraw). For a custom emoji, resolve the name first vialist_custom_emojis/get_custom_emoji. - File →
upload_file(params:room,filePathabsolute,text?caption,threadId?,fileName?).
- Message / reply →
- Return the permalink. The sent/uploaded message is written into the local cache and the response carries its id/permalink — surface that link so the user can jump to it. This closes the URL loop.
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.
- yesterday First seen · 39 lines · 113 tokens per session scan A 0f381b0099a9
rocket-send is a skill published in the GitHub repository jeanfbrito/rocket-cli (2 stars, last pushed 15d ago), licensed MIT. It adds 113 tokens to every session and 875 once invoked, about $0.0006 per session on Opus 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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