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 commands/webhook-co/webhook/execute-plangit clone --depth 1 https://github.com/webhook-co/webhookWhat 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 | $0.00439 |
| Opus 5 | $0.00000 | $0.00219 |
| Sonnet 5 | $0.00000 | $0.00088 |
| Haiku 4.5 | $0.00000 | $0.00044 |
Grade A, and why
execute-plan 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.
What it actually says
/execute-plan
Implement an agreed plan in reviewed batches, not one giant uninterrupted run. Use this after a plan
exists (from /brainstorming, /feature-dev, or a written design).
How to run
- Confirm the plan. Restate the batches you'll implement and their order. If there's no clear
plan yet, stop and ask for one (or run
/brainstormingfirst). Don't improvise scope. - Work one batch at a time. For each batch:
- Implement it under TDD — failing test first, then the minimum code to pass, then refactor (see
the
test-driven-developmentskill). - Keep changes scoped to the batch; don't drift into unrelated edits.
- Implement it under TDD — failing test first, then the minimum code to pass, then refactor (see
the
- Review checkpoint after each batch. Hand the diff to the
code-revieweragent (and theqa-test-revieweragent when behavior on a correctness-critical path changed — signing/verification, dedup, retries, ordering, replay, metering). Address must-fix findings before moving on. - Pause for me at each checkpoint with a one-line status: what landed, what the review said, and what's next. Don't barrel through all batches silently.
- Summarize at the end: what changed, test status, follow-ups, and anything needing human verification.
Hard rules
- Never bypass the gate. No
git commit --no-verify/git push --no-verify, no.only/.skip/ disabled tests, no lowered coverage thresholds. If the pre-commit/lint-staged hook fails, fix the root cause and make a new commit — CI required checks are the real gate and have no bypass. - Human-UI-testing hard stop. If a batch needs human visual/interaction/copy verification, stop and flag it for human testing; don't mark it done on your own.
- Keep CLI/API/web/MCP at parity; reuse
shared/types. Stay public-safe (no pricing/account IDs).
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 · 29 lines · 0 tokens per session scan A db5ec31d9ff5
execute-plan is a command published in the GitHub repository webhook-co/webhook (0 stars, last pushed 6d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 439 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 2026-08-31.
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