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 fmind/dot --skill agent-protocolsgit clone --depth 1 https://github.com/fmind/dotWrote 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/fmind/dot/agent-protocols)<a href="https://agentmods.dev/skills/fmind/dot/agent-protocols"><img src="https://agentmods.dev/badge/skills/fmind/dot/agent-protocols/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/fmind/dot/agent-protocols"><img src="https://agentmods.dev/badge/skills/fmind/dot/agent-protocols.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 | $0.00021 | $0.00358 |
| Opus 5.5 | $0.00008 | $0.00143 |
| Sonnet 5.5 | $0.00004 | $0.00072 |
| Haiku 4.5 | $0.00002 | $0.00036 |
Grade A, and why
agent-protocols 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 9d 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
Agent Protocols
Connect agents and tools through the protocol required by the peers. A2A exchanges agent tasks, MCP exposes tools and context, and ACP connects agent clients such as editors to agents; these protocols are not interchangeable.
Workflow
- Read only the needed guide: read only the A2A, MCP, or ACP guide needed below. Use mcp-setup for registering an existing MCP server in a host; registration is separate from implementing a client or server.
- Vet vendor skills through policy: take vendor skills only from each guide's official-skill guidance, reviewed through the vendor policy and installed project-scoped. A protocol capability named skill is not an installable Agent Skill.
Task guides
What ships with it
4 files 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.
- 9d ago Changed · -2 lines cdeb9fc30ddd
- 11d ago Changed 18edd7001ae2
- 12d ago Changed · -1 lines · -3 tokens per session 5c1dbf45b557
- 14d ago Changed e82c1abc4ba4
- 29d ago First seen · 34 lines · 24 tokens per session scan A 28417e11c83b
agent-protocols is a skill published in the GitHub repository fmind/dot (11 stars, last pushed yesterday), licensed MIT. It adds 21 tokens to every session and 358 once invoked, about $0.0001 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 2026-09-17.
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