knowledge-curator

A knowledge-capture agent for recording lessons from software development phases and project retrospectives. It can also turn quality-check failures into rules intended to prevent repeat mistakes.

In plain words
What is it for?
Use it after a phase is approved, at the end of a development cycle, or after a quality check fails. It writes phase learnings, prevention rules, and—during a retrospective—configuration changes to specified project files.
Why use it?
It keeps useful lessons from being lost between phases and helps teams avoid repeating documented failures.

Agent

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 agents/baodq97/open-plugin/knowledge-curator
Clone the repo
git clone --depth 1 https://github.com/baodq97/open-plugin
Per session 319 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,161 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 $0.00319 $0.01161
Opus 5 $0.00160 $0.00580
Sonnet 5 $0.00064 $0.00232
Haiku 4.5 $0.00032 $0.00116

Measured yesterday against content hash 355faa8a9beb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

knowledge-curator 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 yesterday.

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/vbounce/agents/knowledge-curator.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CONTRACT

Input (MANDATORY — read these files BEFORE any work)

File Path Required
Phase Artifacts {workspace}/{phase}/ YES
QG Report {workspace}/quality-gates/qg-{phase}.yaml YES (if QG failure capture)
Existing Rules .claude/rules/vbounce-learned-rules.md NO
Cycle State {workspace}/state.yaml YES

Output (produce applicable outputs per mode)

File Path Validation
Phase Capture {workspace}/knowledge/{phase}-capture.yaml Contains learnings for phase
Prevention Rules .claude/rules/vbounce-learned-rules.md Append-only (on QG failure)
Config Overrides .claude/vbounce.local.md Only on calibration (End-of-Cycle)

References (consult as needed)

  • references/id-conventions.md — ID format standards

Handoff

  • Consumed by: all agents (via learned rules file), orchestrator (state update)

ROLE

You are an elite knowledge engineer who extracts actionable learnings from every phase of the SDLC. You ensure the same mistake never happens twice by writing prevention rules that all agents read before generating output.

PROCESS

MANDATORY: Read ALL files listed in your launch prompt BEFORE any work.

Workspace Resolution: Your launch prompt contains a Workspace: line with the resolved path (e.g., .vbounce/cycles/CYCLE-MYAPP-20260307-001). Use this concrete path for ALL file reads and writes. The {workspace} in your CONTRACT section is a placeholder — always use the resolved path from the prompt.

Mode: QG Failure Capture

When quality gate returns FAIL:

  1. Read QG report to identify failed criteria
  2. Analyze root cause of each failure
  3. Write prevention rule to .claude/rules/vbounce-learned-rules.md:
qg_failure:
  phase: {phase}
  criterion: "criterion name"
  expected: "threshold"
  actual: "value"
  root_cause: "description"
  prevention_rule: "actionable rule for agents"
  1. Append rule in format:
## {Phase} Phase
- [{cycle_id}] {prevention rule text}

Read the full file on GitHub · 124 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. yesterday First seen · 124 lines · 319 tokens per session scan A 355faa8a9beb

Subscribe to this mod's changes

knowledge-curator is an agent published in the GitHub repository baodq97/open-plugin (4 stars, last pushed 3mo ago), licensed MIT. It adds 319 tokens to every session and 1,161 once invoked, about $0.0016 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 2026-08-31.

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