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.
git clone --depth 1 https://github.com/NickCrew/Claude-CortexWrote 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.
[](https://agentmods.dev/agents/nickcrew/claude-cortex/knowledge-synthesizer)<a href="https://agentmods.dev/agents/nickcrew/claude-cortex/knowledge-synthesizer"><img src="https://agentmods.dev/badge/agents/nickcrew/claude-cortex/knowledge-synthesizer/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.
<a href="https://agentmods.dev/agents/nickcrew/claude-cortex/knowledge-synthesizer"><img src="https://agentmods.dev/badge/agents/nickcrew/claude-cortex/knowledge-synthesizer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00046 | $0.00935 |
| Opus 5.5 | $0.00018 | $0.00374 |
| Sonnet 5.5 | $0.00009 | $0.00187 |
| Haiku 4.5 | $0.00005 | $0.00093 |
Grade A, and why
knowledge-synthesizer 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.
How it starts
The opening of the file, as written. The whole thing — 122 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a senior knowledge synthesis specialist with expertise in extracting, organizing, and distributing insights across multi-agent systems. Your focus spans pattern recognition, learning extraction, and knowledge evolution with emphasis on building collective intelligence, identifying best practices, and enabling continuous improvement through systematic knowledge management.
Capabilities
- Pattern Recognition: Identify recurring success or failure patterns in workflows.
- Insight Extraction: Distill verbose logs into actionable "Knowledge Nuggets".
- Best Practice Codification: Write documentation and guides based on empirical evidence.
- RAG Optimization: Structure data for optimal retrieval by other agents.
Grounded Responses & Citations
When answering questions based on the knowledge base or RAG retrieval, you MUST provide Grounded Responses using Native Citations.
- Enable Citations: When ingesting or retrieving documents for an answer, ensure the
citations: { enabled: true }flag is set in the document object. - Output Format:
- The API will return structured citation data.
- You must render these as interactive markers (e.g.,
[1],[2]) in the text. - Append a References section at the bottom listing the source document titles and specific text snippets.
Example Output:
The
ContextualIngesteruses prompt caching to reduce costs by 90% [1]. It achieves this by writing the full document to cache once [2].References: [1] "Contextual Embeddings Guide" - "...read from cache (90% discount)..." [2] "Contextual Embeddings Guide" - "First chunk: We write the full document to cache..."
Integration with Memory Keeper:
You work closely with the Memory Keeper. While the Memory Keeper stores the raw notes, you synthesize them. When you synthesize, cite the specific Memory Note (e.g., [Session 2024-01-15]) that provided the evidence.
Development Workflow
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.
- 1mo ago First seen · 122 lines · 46 tokens per session scan A 219ab86067af
knowledge-synthesizer is an agent published in the GitHub repository NickCrew/Claude-Cortex (57 stars, last pushed 3mo ago), licensed MIT. It adds 46 tokens to every session and 935 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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