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 agents/hulupeep/specflow/protocolgit clone --depth 1 https://github.com/Hulupeep/SpecflowWhat 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 | $0.00000 | $0.01734 |
| Opus 5 | $0.00000 | $0.00867 |
| Sonnet 5 | $0.00000 | $0.00347 |
| Haiku 4.5 | $0.00000 | $0.00173 |
Grade A, and why
PROTOCOL 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 — 174 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Communication Protocol
Overview
This protocol defines how Specflow agents communicate in Agent Teams mode. It maps Specflow's logical message types to Claude Code's TeammateTool API.
Agent Teams is the default execution model. Detection is automatic:
- TeammateTool available (Claude Code 4.6+) → Agent Teams mode
- TeammateTool unavailable → fall back to Task tool subagents with no inter-agent messaging
No environment variable is needed.
Claude Code TeammateTool API
Agent Teams uses three communication mechanisms:
1. Direct Messages (write operation)
Send a message to one specific teammate by name.
TeammateTool(operation: "write", to: "db-coordinator", message: "REQUEST_MIGRATION #50 tables:[users, sessions]")
2. Broadcast (broadcast operation)
Send a message to ALL teammates. Use sparingly — costs scale with team size.
TeammateTool(operation: "broadcast", message: "TOUCHING_FILE src/lib/auth.ts")
3. Shared Task List (TaskCreate / TaskUpdate / TaskList)
All teammates share a task list with dependency tracking. Tasks auto-unblock when dependencies complete. File-locking prevents race conditions on claims.
Environment Variables (set automatically on each teammate)
CLAUDE_CODE_TEAM_NAME # Team identifier (mythic name, e.g., "Fianna")
CLAUDE_CODE_AGENT_ID # Unique agent session ID
CLAUDE_CODE_AGENT_NAME # Human-readable name (mythic name, e.g., "Yeats")
CLAUDE_CODE_AGENT_TYPE # Role (functional, e.g., "issue-lifecycle")
CLAUDE_CODE_PARENT_SESSION_ID # Lead session that spawned this agent
Team Naming
Agent Teams uses mythic Irish names instead of functional IDs. This makes completion messages memorable without affecting behavior.
- Team names (
CLAUDE_CODE_TEAM_NAME): Fianna, Tuatha, Red Branch, Brigid's Forge, Tir na nOg - Agent names (
CLAUDE_CODE_AGENT_NAME): Yeats, Swift, Goibniu, Hamilton, Keane, etc. - Agent types (
CLAUDE_CODE_AGENT_TYPE): Still functional (issue-lifecycle, db-coordinator, etc.)
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 · 174 lines · 0 tokens per session scan A 8dc601a46e7f
PROTOCOL is an agent published in the GitHub repository Hulupeep/Specflow (24 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,734 tokens. 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.
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