retrospect-core

retrospect-core is a skill for Claude Code, Codex from AcKeskin/contexture. It costs 84 tokens per session (2,983 once invoked), scanned A, original, MIT.

A shared engine for comparing architectural or process review findings with an earlier report, formatting the results, and routing confirmed issues to the right tool.

In plain words
What is it for?
Use it as an internal component of broader review workflows that need to detect new, carried, and resolved findings.
Why use it?
It prevents different review tools from duplicating the same comparison and reporting logic.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it as an internal component of broader review workflows that need to detect new, carried, and resolved findings.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ackeskin/contexture/retrospect-core
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 AcKeskin/contexture --skill retrospect-core
Clone the repo
git clone --depth 1 https://github.com/AcKeskin/contexture

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 retrospect-core

README.md
[![agentmods](https://agentmods.dev/badge/skills/ackeskin/contexture/retrospect-core.svg)](https://agentmods.dev/skills/ackeskin/contexture/retrospect-core)
Your own site
<a href="https://agentmods.dev/skills/ackeskin/contexture/retrospect-core"><img src="https://agentmods.dev/badge/skills/ackeskin/contexture/retrospect-core.svg" alt="Measured on agentmods" height="20"></a>
Per session 84 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,983 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 $0.00084 $0.02983
Opus 5 $0.00042 $0.01491
Sonnet 5 $0.00017 $0.00597
Haiku 4.5 $0.00008 $0.00298

Measured 4d ago against content hash 6ac2995f11cc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

retrospect-core 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 4d 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.

skills/retrospect-core/SKILL.md · 152 lines

How it starts

The opening of the file, as written. The whole thing — 152 lines — stays where its author put it; the contents beside it link to each section on GitHub.

retrospect-core

The meta-review engine. It is to checkpoint what deliver is to discover/prep/review: one mechanism, its consumers kept single-responsibility without duplicating the engine.

It does not know how to find decision drift or organ overlap — that domain logic lives in the calling skill's passes. retrospect-core owns the four things every meta-review run shares: orient, diff against the prior run, render per the review output contract, and route each confirmed finding to the organ that actually fixes it.

When to run

  • A meta-review skill (checkpoint) invokes one of the functions below programmatically.
  • Do not respond to user prose triggers. There is no /retrospect-core command and no "when the user says X" branch. It is a format-and-orchestration helper.
  • Stateless per call, with one exception: persist writes a report artefact to disk (the substrate the next run's diff reads).

The contract

The caller (checkpoint) owns:

  • Which corpus to point at and where its files live.
  • The passes — the domain logic that produces findings.

retrospect-core owns:

  • orient(target) — inventory + since-last-run delta.
  • diff(findings, baselinePath) — NEW/CARRIED/RESOLVED/WONT_FIX tagging.
  • render(report) — the review-output-contract report body.
  • route(finding) — propose-confirm-commit, then hand off to capture / memory-audit / a proposals stub.
  • persist(report, scope) — write latest.md + v<N>.md for the next run's baseline.

A finding passed between caller and engine has this shape:

Finding = {
  id: "R<NNN>",                 // assigned by diff(); provisional in scan order before that
  pass: string,                 // caller's pass label — e.g. "decision-integrity", "responsibility-overlap"
  locator: string,              // the thing the finding is about: a proposal id, memory path, skill name, file:line
  verdict: string,              // pass-specific tag — e.g. HOLDS / SUPERSEDED-unmarked / DEAD / OVERLAP
  severity: "Critical"|"High"|"Medium"|"Low",
  what: string,                 // one-line, specific
  route: "capture"|"memory-audit"|"proposal"|"direct-fix"|"none",
  proposed_action: string,      // concrete — the capture content, the back-link edit, the proposal stub title
  status?: string,              // open | applied | skipped | wont_fix:<reason>  (set during route())
}

Read the full file on GitHub · 152 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. 4d ago First seen · 152 lines · 84 tokens per session scan A 6ac2995f11cc

Subscribe to this mod's changes

retrospect-core is a skill published in the GitHub repository AcKeskin/contexture (2 stars, last pushed 1mo ago), licensed MIT. It adds 84 tokens to every session and 2,983 once invoked, about $0.0004 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 2026-09-03.

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