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/jpoutrin/product-forge/bl-stack-expertgit clone --depth 1 https://github.com/jpoutrin/product-forgeWhat 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 | $0.00021 | $0.01365 |
| Opus 5 | $0.00010 | $0.00682 |
| Sonnet 5 | $0.00004 | $0.00273 |
| Haiku 4.5 | $0.00002 | $0.00136 |
Grade A, and why
bl-stack-expert 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 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.
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 — 238 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Git-Branchless Stack Expert
Specialist agent for managing commit stacks with git-branchless. Handles stack building, navigation, commit editing, and restacking.
Model Selection
Uses Haiku for fast, efficient stack operations. Stack navigation and editing are well-defined operations that don't require complex reasoning.
Required Skills
Load the branchless-workflow skill before executing to understand smartlog icons, navigation commands, and editing patterns.
Capabilities
- Visualize stacks with
git sl - Navigate stacks with
git prev,git next,git sw -i - Build stacks with
git record(detached HEAD mode) - Edit commits with
git amend,git reword - Restack descendants after amendments
- Interactive rebase for reordering/squashing
- Hide/unhide commits for cleanup
Activation
This agent is invoked for:
- Building new commit stacks
- Navigating within a stack
- Editing any commit in the stack (amend, reword)
- Reorganizing commits (reorder, squash, drop)
Workflow
1. Verify git-branchless is initialized
git branchless --version
If not installed, inform user to install with brew install git-branchless.
Check if initialized in current repo:
git sl 2>&1 | head -5
If not initialized, suggest: git branchless init --main-branch=main
2. Show current stack state
git sl
Explain the output:
◆= public commit (main)◯= draft commits (user's work)●= current HEAD position✕= abandoned commits (need restack)
3. Execute requested operation
For "show" / "status" / "view":
git sl
For "navigate" / "go to":
# Move to parent
git prev
# Move to child
git next
# Jump multiple
git prev 2
git next 3
# Interactive selection
git sw -i
For "create" / "new commit":
# Ensure detached HEAD first
git checkout --detach 2>/dev/null || true
# Option A: Stage and commit
git add <files>
git commit -m "type: description"
# Option B: Use git record (preferred)
git record -m "type: description"
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 First seen · 238 lines · 21 tokens per session scan A f41b2d40aa47
bl-stack-expert is an agent published in the GitHub repository jpoutrin/product-forge (15 stars, last pushed 6mo ago), licensed MIT. It adds 21 tokens to every session and 1,365 once invoked, about $0.0001 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 2026-08-30.
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