05-spike

05-spike is a skill for Claude Code from ai-driven-dev/framework. It costs 44 tokens per session (260 once invoked), scanned A, original, MIT.

A workflow for investigating one uncertainty that is blocking an estimate, feasibility check, or design decision. It records evidence, assumptions, and the outcome.

In plain words
What is it for?
Use it to define a focused investigation, gather evidence, and record whether the question was resolved.
Why use it?
It prevents teams from guessing when they do not yet know whether something is possible or how large it may be.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Part of the aidd-pm plugin — 10 skills shipped together

Good fit Use it to define a focused investigation, gather evidence, and record whether the question was resolved.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ai-driven-dev/framework/05-spike
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.

Any agent
npx skills add ai-driven-dev/framework --skill 05-spike
Clone the repo
git clone --depth 1 https://github.com/ai-driven-dev/framework

Made for: Claude Code.

Or install aidd-pm, the plugin that ships this one along with the rest of its 10 skills.

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 05-spike

README.md
[![agentmods](https://agentmods.dev/badge/skills/ai-driven-dev/framework/05-spike/github.svg)](https://agentmods.dev/skills/ai-driven-dev/framework/05-spike)
Your own site
<a href="https://agentmods.dev/skills/ai-driven-dev/framework/05-spike"><img src="https://agentmods.dev/badge/skills/ai-driven-dev/framework/05-spike/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 05-spike

Your own site · 80×15
<a href="https://agentmods.dev/skills/ai-driven-dev/framework/05-spike"><img src="https://agentmods.dev/badge/skills/ai-driven-dev/framework/05-spike.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 260 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 $0.00044 $0.00260
Opus 5.5 $0.00018 $0.00104
Sonnet 5.5 $0.00009 $0.00052
Haiku 4.5 $0.00004 $0.00026

Measured 1mo ago against content hash e5e71e5870b8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

05-spike 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.

plugins/aidd-pm/skills/05-spike/SKILL.md · 37 lines

What it actually says

Spike

flowchart LR
  source([question or Spike]) --> create
  source -->|"already persisted"| investigate
  create -->|"save for later"| done
  create -->|"investigate now"| investigate --> conclude
  conclude -->|"inconclusive"| investigate
  conclude --> done([Spike])

Actions

Run the flow above. Read only the next action file.

Action Does
create qualify and persist
investigate collect evidence
conclude write outcome and sync parents

Transversal rules

  • Keep product and lifecycle decisions with the user.
  • Separate evidence, decisions, and assumptions.
  • Preserve source links and existing edits.
  • Ask natural questions; never expose actions, references, or unchanged state.
  • Require explicit approval or caller-provided bounded authority before any write.
  • Bound the question; never answer beyond its stop condition.
Files

What ships with it

10 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 First seen · 37 lines · 44 tokens per session scan A e5e71e5870b8

Subscribe to this mod's changes

05-spike is a skill published in the GitHub repository ai-driven-dev/framework (519 stars, last pushed today), licensed MIT. It adds 44 tokens to every session and 260 once invoked, about $0.0002 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 2026-09-03.

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