S

silica

alessandro-carosia/silica-core · v0.8.3 · Development & Workflow

by Alessandro CarosiaScan grade: caution

Serves an Obsidian vault as the agent's memory over MCP: semantic and literal recall, gated note writing, and hooks that open each session already knowing its vault

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Trust Score50Security scan47Components1
Protect this install with HOL Guard

Guard checks the skills and MCP servers a plugin adds on your machine and asks you before a risky action runs. The scores above are free, and no plan changes them.

Is silica a fit?

From the plugin's manifest and HOL's scan. Anything the plugin does not declare is shown as not declared.

Works with

  • Codex
  • MCP
  • Claude Code
  • 1 skill

Before you install

Sign-in
Not declared
Declared access
Not declared
License
Not declared

Check before relying on it

  • Some security checks did not finish: Cisco skill scan and HOL plugin scan. See the evidence
  • 4 medium findings from the scan. See the evidence
  • The publisher has not verified ownership on HOL.
  • No license declared in the manifest.

What is silica?

silica is a published development & workflow plugin for AI coding agents that works with Codex, MCP and Claude Code, developed by Alessandro Carosia and distributed through the HOL AI plugin registry. Serves an Obsidian vault as the agent's memory over MCP: semantic and literal recall, gated note writing, and hooks that open each session already knowing its vault.

Canonical slug
alessandro-carosia/silica-core
Version
v0.8.3 · updated Sep 15, 2026

Registry snapshot

Support the project
GitHub SponsorsKo-fi
Owner verification
Not verified
Scanner
Registry fallback scan
Security result
Caution
Digest verified
Yes
1 bundled skillRead, copy or download each SKILL.mdOpen skills

Trust and security

Trust & reputation

50

HOL Trust Score

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
64/100
Maintenance
55/100
MCP server setup
100/100
Plugin Security
47/100
Provenance
35/100
Publisher Quality
75/100

Provenance

Plugin root
.
Source repo
https://github.com/kiycoh/silica-harness
Source commit
Unpinned
Publisher verified
No
Owner verified
Not owner verified

Continuous scanner CI not detected

This plugin remains listed. Its overall trust score is reduced by 10% because security checks are not maintained in the source repository's CI.

Optional: maintain the scanner in the source repository's CI to receive the full trust score. Listing does not require that change.

README badge not detected

Plugin owners can add the HOL badge to the repository README from Guard Plugins. Distribution, not security evidence. It adds a 2% engagement adjustment to the overall trust score and never changes the security result.

Security posture

See how the Trust Score is computed
Caution
Security result
47
Security score
0
High findings
Provider
registry-broker-fallback
Grade
F · caution
Version
Unknown
cisco-skill-scanner: unknown

Published advisories

None matched in GitHub security advisories, checked . This covers published advisories only, not problems nobody has reported.

GitHub security advisories are those the source repository has published.

Findings

mediumpublishabilitypublishability.link.missing.websiteURL

websiteURL should be present for marketplace readiness.

mediumpublishabilitypublishability.link.missing.privacyPolicyURL

privacyPolicyURL should be present for marketplace readiness.

mediumpublishabilitypublishability.link.missing.termsOfServiceURL

termsOfServiceURL should be present for marketplace readiness.

lowoperational-securitysupply-chain.lockfile-missing

Repository snapshot does not include a lockfile.

infoskill-securityskill-scan.unavailable

Cisco skill scanner exited with code 1: Error loading skill: No SKILL.md and no .md files found in /var/folders/9z/48v7m0s52llddzmskkyjbdl80000gn/T/hol-skill-safety-nRs0N4 (lenient mode requires at least one markdown file)

mediumprovenanceprovenance.commit.missing

An immutable source commit is required for provenance.

Install guidance

Install in Claude Code

Install through the Claude Code plugin marketplace.

Claude Code plugin docs

Optional: install HOL Guard for Claude Code first, so it can check this plugin's tools on your machine before Claude Code uses them.

  1. 1

    Add the marketplace

    Run this inside a Claude Code session. It registers the marketplace manifest shipped at the repository root. If the repository ships none, add the generated entry from the Advanced section below first.

    claude code
  2. 2

    Find the marketplace and plugin names

    The install id is <plugin-entry>@<marketplace-name>, and the marketplace name is declared inside the manifest — it can differ from the repository name. List registered marketplaces to read both names.

    shell
  3. 3

    Install the plugin

    Substitute the plugin entry name and the marketplace name shown by the previous step.

    claude code

Did setup work in Claude Code?

No setup reports for Claude Code yet. Self-reported by signed-in visitors. Copying a command is not counted, and most installs are never reported.

Attested installs: Fewer than 10 attested installs of this plugin in week 2026-W43, so no number is shown. Counted from opt-in HOL Guard install reports, once per machine and runtime, and never mixed with the answers above. How install reports work.

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Plugin manifest

{
  "name": "silica-core",
  "version": "0.8.3",
  "description": "Retrieval tools for coding agents, no model in the loop: files, search, read, code_pack and write_note over the folder the session is opened in, served over MCP, plus a skill that teaches when to search and how to read coverage.",
  "author": {
    "name": "Alessandro Carosia"
  },
  "keywords": [
    "retrieval",
    "search",
    "bm25",
    "mcp",
    "agents"
  ],
  "skills": "./",
  "mcpServers": "./mcp.codex.json",
  "interface": {
    "displayName": "Silica Core",
    "developerName": "Alessandro Carosia",
    "shortDescription": "Located evidence from your folder: search, read, inventory, code packs. No model, no memory lane."
  },
  "repository": "https://github.com/kiycoh/silica-harness",
  "registryIndexVersion": 5
}

Marketplace source

Repo URL
https://github.com/kiycoh/silica-harness
Marketplace path
Unknown
Source path
.
Install policy
Unspecified

Skills

1 SKILL.md file ship with this plugin. Preview, copy, or download each one, then install them with the Skills CLI.

Share
skills-cli

  • silica

    silica_core/skills/silica/SKILL.md

    Search local documents for cited passages, compare sources, or investigate whether the corpus supports a claim. With code indexing enabled, use first to locate a behavior or implementation when its symbol name is unknown. Use grep for exact strings or known symbol names; read directly when the relevant path and section are already known.

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

File inventory

.claude-plugin/plugin.json

file

505 bytes

493c85cc81ddca9c…

.codex-plugin/plugin.json

plugin-manifest

705 bytes

2600061c6f5f1481…

hooks/hooks.json

file

391 bytes

73cfe482006f882e…

hooks/prompt.py

file

1,603 bytes

3106a99b215c989d…

mcp.codex.json

mcp-config

177 bytes

834536d80331adb7…

README.md

file

11,634 bytes

8244c86abf6eeeaf…

SECURITY.md

file

2,142 bytes

324ec9c4c00e1a69…

silica_core/skills/silica/SKILL.md

skill

7,135 bytes

9b99e210500adfd2…

silica — Frequently asked questions

What is silica?
silica is an AI plugin in the HOL registry. Serves an Obsidian vault as the agent's memory over MCP: semantic and literal recall, gated note writing, and hooks that open each session already knowing its vault.
How do I install silica?
Install silica in your harness: Codex — codex plugin marketplace add kiycoh/silica-harness; Claude Code — /plugin marketplace add kiycoh/silica-harness; MCP — git clone https://github.com/kiycoh/silica-harness. Full step-by-step guidance is on the HOL plugin page.
How do I install silica in Codex?
To install silica in Codex, start with codex plugin marketplace add kiycoh/silica-harness. The complete step-by-step install guide for Codex is on the HOL plugin page.
How do I install silica in Claude Code?
To install silica in Claude Code, start with /plugin marketplace add kiycoh/silica-harness. The complete step-by-step install guide for Claude Code is on the HOL plugin page.
How do I install silica in MCP?
To install silica in MCP, start with git clone https://github.com/kiycoh/silica-harness. The complete step-by-step install guide for MCP is on the HOL plugin page.
How is the Trust Score for silica computed?
silica has a HOL Trust Score of 50 out of 100. The score is a weighted sum of six components from a static scan of the source, capped for high-severity findings and adjusted by two disclosed policies. Memberships and payments are not inputs, and a scan is not a safety guarantee. Full breakdown: https://hol.org/registry/plugins/alessandro-carosia%2Fsilica-core/trust
Who publishes silica?
silica is published by Alessandro Carosia and listed on HOL.

Install signal

HOL cannot see every install. These are separate signals from different sources, so they are not added together. Counts under each floor show as <N.

Install commands issued here
<5
HOL Guard install commands issued from this listing, last 28 days.
Opt-in install reports
<10
Machines that reported installing it through HOL Guard in week 2026-W43. Reporting is opt-in, so most installs are not counted.
HOL Guard workspaces
<5
Workspaces that approved it or include it in an approved-plugin feed, as of today.

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