context-optimizer SKILL.md skillA

context-optimizer from rjmurillo/ai-agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add rjmurillo/ai-agents/context-optimizer@v1.2.0

Pins v1.2.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
rjmurillo/ai-agents
Path
.claude/skills/context-optimizer/SKILL.md
Versions recorded
5
Latest version
v1.2.0, committed Oct 13, 2026
First version recorded
Sep 19, 2026
Size
18,736 bytes
Repository stars
48
License
MIT

Analyze skill content for optimal placement (Skill vs Passive Context vs Hybrid), compress markdown to pipe-delimited format, and validate compliance against the decision framework. Passive context wins for what the model cannot know (post-cutoff APIs, repo gotchas); pre-trained knowledge belongs in progressive disclosure. Use for "analyze skill placement", "compress markdown", "optimize context", "extract and index", or "audit always-on rules". Do NOT use for gathering knowledge before a task…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Context Optimizer

Tooling suite for optimizing Claude Code context placement. Passive context
performed better than skills in the Vercel knowledge-injection eval by
eliminating retrieval decisions.

## Triggers

- `analyze skill placement` - classify and validate content as Skill vs Passive Context
- `compress markdown` - reduce context overhead
- `optimize context` - lower API costs and improve agent performance; distill a large log or diff once with distill_artifact.py, then read the digest
- `extract and index` - split markdown into detail files with compact index
- `audit always-on rules` - eval-gated procedure for whether a rule earns its slot, and the doctrine behind it, in [rule-audit-procedure.md](references/rule-audit-procedure.md) and [model-context-doctrine.md](references/model-context-doctrine.md). Also the entry point when a new model ships. **Requires a full rjmurillo/ai-agents checkout**: the procedure runs this repo's eval harness and rule generator, neither of which ships in a plugin install. The doctrine and the instrument write-ups are readable anywhere; only the commands need the checkout

## Process
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add rjmurillo/ai-agents/context-optimizer@sha256:8073ccf30cff2e1d

The line at the top of this page pins the label v1.2.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_hgftewtyjm5wfc2p.svg)](https://markdownregistry.com/a/art_hgftewtyjm5wfc2p)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Sep 19, 2026 and Oct 13, 2026, about one every 6 days.

versioncommittedcommitsizeaudit
v1.2.0 latest2026-10-13 fb87410 18,736 BA view · diff
v1.2.02026-09-27 0e62660 18,498 BA view · diff
v1.2.02026-09-25 3fda96c 18,444 BA view · diff
v1.2.02026-09-23 efd148e 18,243 BA view · diff
v1.2.02026-09-19 78f0586 18,225 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (18736 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

rjmurillo/ai-agents · 48 stars · license MIT · pushed 2026-10-20 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_hgftewtyjm5wfc2p
GET https://markdownregistry.com/api/v1/resolve?ref=rjmurillo/ai-agents/context-optimizer
GET https://markdownregistry.com/api/v1/blob/8073ccf30cff2e1dac71ecfd42e9868c7247295e262f2646b29a0edf651a4d57

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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