pulse

pulse is a skill for Claude Code, Codex from notactuallytreyanastasio/deciduous. It costs 14 tokens per session (477 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 Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/notactuallytreyanastasio/deciduous/pulse
Any agent
npx skills add notactuallytreyanastasio/deciduous --skill pulse
Clone the repo
git clone --depth 1 https://github.com/notactuallytreyanastasio/deciduous

Made for: Claude Code, Codex.

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.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.svg" alt="Measured on agentmods" 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 477 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00014 $0.00477
Opus 5 $0.00007 $0.00238
Sonnet 5 $0.00003 $0.00095
Haiku 4.5 $0.00001 $0.00048

Measured 5d ago against content hash 82ddb615f712, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 5d 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 · 76 lines

What it actually says

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.

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. 5d 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 (160 stars, last pushed yesterday), licensed Apache-2.0. It adds 14 tokens to every session and 477 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.

Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

brainstorming

You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.

obra/superpowers · 37 tokens

auto-perf-optimize

Run agent-driven VS Code performance or memory investigations. Use when asked to launch Code OSS, automate a VS Code scenario, run the Chat memory smoke runner, capture renderer heap snapshots, take workflow screenshots, compare run summaries, or drive a repeatable scenario before heap-snapshot analysis.

microsoft/vscode · 62 tokens

chat-perf

Run chat perf benchmarks and memory leak checks against the local dev build or any published VS Code version. Use when investigating chat rendering regressions, validating perf-sensitive changes to chat UI, or checking for memory leaks in the chat response pipeline.

microsoft/vscode · 51 tokens

chat-pet-sprite-creation

Use when creating or changing VS Code chat pet sprite art, sprite sheets, state animations, eye treatments, Stable/Insiders variants, or pet transitions under src/vs/workbench/contrib/chat/browser/widget/media/chatPet.

microsoft/vscode · 53 tokens

cpu-profile-analysis

Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…

microsoft/vscode · 71 tokens