deciduous: Skill for OpenCode

.opencode/skills/pulse/SKILL.md

pulse is a skill for OpenCode from notactuallytreyanastasio/deciduous. It costs 14 tokens per session (585 once invoked), scanned A, original, Apache-2.0.

A method for mapping the decisions that define a system as it exists now, without documenting its past changes.

In plain words
What is it for?
Use it to examine a feature, subsystem, or system boundary, then build a graph of goals, possible approaches, and selected decisions.
Why use it?
It exposes active goals, missing coverage, and disconnected decisions so the current design can be understood and completed.

Skill for OpenCode

Written for OpenCode: installed under .opencode/. Also seen: mentions OpenCode.

This is notactuallytreyanastasio/deciduous's own configuration. It tells OpenCode how to work on deciduous itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything deciduous configures →

Reuse

Borrowing it

Nothing to install: this file belongs to notactuallytreyanastasio/deciduous. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/notactuallytreyanastasio/deciduous/main/.opencode/skills/pulse/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/notactuallytreyanastasio/deciduous

Made for: OpenCode.

Wrote 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.

agentmods badge for pulse

README.md
[![agentmods](https://agentmods.dev/badge/skills/notactuallytreyanastasio/deciduous/pulse/github.svg)](https://agentmods.dev/skills/notactuallytreyanastasio/deciduous/pulse)
Your own site
<a href="https://agentmods.dev/skills/notactuallytreyanastasio/deciduous/pulse"><img src="https://agentmods.dev/badge/skills/notactuallytreyanastasio/deciduous/pulse/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.

agentmods 80×15 button for pulse

Your own site · 80×15
<a href="https://agentmods.dev/skills/notactuallytreyanastasio/deciduous/pulse"><img src="https://agentmods.dev/badge/skills/notactuallytreyanastasio/deciduous/pulse.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 14 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 585 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00014 $0.00585
Opus 5.5 $0.00006 $0.00234
Sonnet 5.5 $0.00003 $0.00117
Haiku 4.5 $0.00001 $0.00059

Measured 1mo ago against content hash 44a080045d7b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pulse 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 1mo 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.

.opencode/skills/pulse/SKILL.md · 80 lines

How it starts

The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Pulse

Map the current model as decisions. No history, just now.

Step 1: Get current state

deciduous pulse

Review the report: active goals, coverage gaps, orphan nodes. This tells you what's already mapped and what needs attention.

Step 2: Pick a scope

What part of the system are you taking the pulse of?

  • A feature ("Suspense fallback behavior")
  • A subsystem ("Authentication")
  • A boundary ("API request lifecycle")

Step 3: Ask "What decisions define this?"

Read the code. For the thing you're scoping, ask:

"What design questions had to be answered for this to work?"

Not implementation questions ("which library?") - model questions ("what's the behavior?")

Step 4: Build the goal -> options -> decisions

# Create the root goal
deciduous add goal "<Scope>: <Core question>" -c 90

# Add options (possible approaches from the goal)
deciduous add option "<Possible approach>" -c 85
deciduous link <goal> <option> -r "possible_approach"

# When an option is chosen, create a decision
deciduous add decision "Chose <approach>" -c 90
deciduous link <option> <decision> -r "chosen"

If a question is still open, leave it as option nodes without a decision.

Step 5: Review

deciduous pulse
deciduous pulse --summary
deciduous serve

Check for Supporting Documents

deciduous doc list <goal_id>
deciduous doc attach <goal_id> docs/architecture.png -d "Current architecture"

Decision Criteria

  • Worth capturing? Does it define BEHAVIOR, not implementation?
  • How deep? Stop when decisions become implementation details
  • Option vs Decision? Option = possible approach. Decision = choosing which option.

Connecting to History

Pulse gives you the "Now". For history, run /narratives then /archaeology.

Working Alongside Other Agents

If other agents work on this at the same time (one narrative each, say), split the work and hand off on the deciduous message board, never in a scratch file: post with deciduous board post --as <label> -s "..." -m "@other ..." (or the post_message MCP tool), read deciduous board read --unanswered <label> before you start and before you finish, and answer with --reply-to <id>.

Read the full file on GitHub · 80 lines

Changes

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.

  1. 1mo ago Changed · +4 lines 44a080045d7b
  2. 2mo ago First seen · 76 lines · 14 tokens per session scan A 82ddb615f712

Subscribe to this mod's changes

pulse is a skill published in the GitHub repository notactuallytreyanastasio/deciduous (169 stars, last pushed 13d ago), licensed Apache-2.0. It adds 14 tokens to every session and 585 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 2026-08-30.

Related

pulse compared with skills from other repositories

pulse next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
pulsenotactuallytreyanastasio/deciduousSkill16913d agoApache-2.0A14OpenCode
imagegenopenai/codexSkill133kyesterdayApache-2.0A113Codex
playwright-climicrosoft/playwrightSkill99kyesterdayApache-2.0A19Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79k4d agoMITA200Claude Code, Codex
systematic-debuggingobra/superpowersSkill313k3d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code
next-partial-prefetching-adoptionvercel/next.jsSkill143ktodayMITA103Claude Code