GENesis-AGI: Skill for Claude Code

.claude/skills/spec-session/SKILL.md

spec-session is a skill for Claude Code from WingedGuardian/GENesis-AGI. It costs 88 tokens per session (1,845 once invoked), scanned A, original, MIT.

A planning session for defining a software change before anyone plans or builds it. It shapes the problem, product requirements, system design, and tickets, with review checks for evidence and whether the idea applies broadly enough.

In plain words
What is it for?
Use it to investigate a proposed change, write a product requirements document, review architecture, and prepare an actionable set of build tickets.
Why use it?
It prevents implementation work from starting with an unclear problem, unsupported assumptions, or an incomplete design. It separates deciding what to build from building it.

Skill for Claude Code

Written for Claude Code: PreToolUse hook event. Also seen: reads .claude/ paths.

This is WingedGuardian/GENesis-AGI's own configuration. It tells Claude Code how to work on GENesis-AGI 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 GENesis-AGI configures →

Reuse

Borrowing it

Nothing to install: this file belongs to WingedGuardian/GENesis-AGI. 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/WingedGuardian/GENesis-AGI/main/.claude/skills/spec-session/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/WingedGuardian/GENesis-AGI

Made for: Claude Code.

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 spec-session

README.md
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agentmods 80×15 button for spec-session

Your own site · 80×15
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Per session 88 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,845 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.
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 $0.00088 $0.01845
Opus 5.5 $0.00035 $0.00738
Sonnet 5.5 $0.00018 $0.00369
Haiku 4.5 $0.00009 $0.00185

Measured 3d ago against content hash 2e90b27d6a8c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

spec-session 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 3d 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.

.claude/skills/spec-session/SKILL.md · 139 lines

How it starts

The opening of the file, as written. The whole thing — 139 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Spec session

Load genesis-development (the shared core) first if this session has not: it holds the review-chain, evidence and private-data rules every session uses.

A minimal skill for now; its process is designed later. Also read:

  • the core's "Due diligence before building" and "Architecture Review" (.claude/skills/genesis-development/SKILL.md);
  • .claude/skills/genesis-development/references/due-diligence.md and .claude/skills/genesis-development/references/plan-docs.md;
  • .claude/docs/premise-check.md, and the evaluate skill for any external candidate;
  • build-session's "Generalizability Gate" before a spec names where code runs.

Plan documents carry a structured header

A plan doc that outlives one session (~/.claude/plans/<name>.md) opens with YAML frontmatter naming what it commits to and what it was written against:

---
plan: <slug>          # matches the filename
status: active        # active | stalled | superseded | done
updated: 2026-09-15   # last revision of the LIVE section
pinned:
  main: <12-hex>      # origin/main as of the `updated` date above
binds: "<one line — what adopting this plan commits us to>"
prevents: "<one line — what it forecloses, or nothing>"
---

Quote binds and prevents — they are prose, and unquoted, a ": " makes the whole header unparseable while a " #" silently truncates the value (binds: PR #2046 ships first loads as "PR").

Optional decisions: / ledger: / issues: lists name the trackers this plan executes, in FULL ids, so a reader of either end can find the other. An absent list means "none" — so only omit it once you have looked; write issues: unchecked if you have not. In the body, ## ═══ SUPERSEDED BELOW ═══ divides live content from archaeology; no divider means the whole file is live. What the body must STATE is set by "Due diligence before building" in the core, for every development plan presented for approval.

pinned.main is the field that pays for itself: it makes git fetch origin main --quiet && git log --oneline <pinned.main>..origin/main a one-command staleness read, on a document whose line numbers and PR heads otherwise go quietly false. The fetch is load-bearing — against an unfetched origin/main the command prints nothing and reads as "no drift". A moved main means re-verify, never that the plan is wrong.

Read the full file on GitHub · 139 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. 3d ago First seen · 139 lines · 88 tokens per session scan A 2e90b27d6a8c

Subscribe to this mod's changes

spec-session is a skill published in the GitHub repository WingedGuardian/GENesis-AGI (99 stars, last pushed today), licensed MIT. It adds 88 tokens to every session and 1,845 once invoked, about $0.0004 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 2026-10-22.