tacit.knowledge

tacit.knowledge is a skill for Claude Code, Codex from sangmin7648/tacit. It costs 99 tokens per session (872 once invoked), scanned A, original, MIT.

A search skill for finding relevant context in the local tacit knowledge database.

In plain words
What is it for?
Use it when a question may depend on information previously saved in the tacit database.
Why use it?
It helps recover details from earlier conversations, meetings, decisions, ideas, and learnings.

Skill for Claude CodeCodex

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

Good fit Use it when a question may depend on information previously saved in the tacit database.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sangmin7648/tacit/tacit.knowledge
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 sangmin7648/tacit --skill tacit.knowledge
Clone the repo
git clone --depth 1 https://github.com/sangmin7648/tacit

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 tacit.knowledge

README.md
[![agentmods](https://agentmods.dev/badge/skills/sangmin7648/tacit/tacit.knowledge/github.svg)](https://agentmods.dev/skills/sangmin7648/tacit/tacit.knowledge)
Your own site
<a href="https://agentmods.dev/skills/sangmin7648/tacit/tacit.knowledge"><img src="https://agentmods.dev/badge/skills/sangmin7648/tacit/tacit.knowledge/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.

agentmods 80×15 button for tacit.knowledge

Your own site · 80×15
<a href="https://agentmods.dev/skills/sangmin7648/tacit/tacit.knowledge"><img src="https://agentmods.dev/badge/skills/sangmin7648/tacit/tacit.knowledge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 99 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 872 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 $0.00099 $0.00872
Opus 5.5 $0.00040 $0.00349
Sonnet 5.5 $0.00020 $0.00174
Haiku 4.5 $0.00010 $0.00087

Measured 9d ago against content hash 5c973d46edd3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tacit.knowledge 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 9d 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.

tacit/core/internal/components/skill-installer/tacit.knowledge/SKILL.md · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.

tacit Knowledge Base Query

You are retrieving relevant knowledge from the user's local tacit knowledge database using the tacit CLI.

Available Commands

tacit list [duration]                    — List entries created within duration (default: 1h). Supports: 30m, 1h, 24h, 1d, 7d, 2w
tacit search [--duration <d>] <pattern>  — Full-text search across all entries (title + summary + content). Optional --duration limits to entries created within that window.
tacit get <file-path>                    — Print full content of a specific entry

Process

When the user invokes /tacit.knowledge <prompt>, extract the time window from the prompt if mentioned (e.g. "today", "this week", "last hour"). If no time is specified, default to 1h for list.

Step 1 — Run list agent and search agent IN PARALLEL

List agent — retrieves recent entries:

tacit list <duration>
  • Use the time window from the prompt if specified; otherwise use 1h
  • Parse the output: each entry has [datetime] title, File: <path>, and optionally Summary: <first line>
  • Collect all file paths from the output

Search agent — finds topically relevant entries:

  1. Extract 2–4 keywords from the user's prompt (nouns, domain terms, key verbs)
  2. Run tacit search <keyword> for each keyword to maximize recall. If a time window was identified, pass --duration <d> to narrow results (e.g. tacit search --duration 1h <keyword>)
  3. Collect all unique file paths from results
  4. Deduplicate across keywords

Each agent returns: a list of { file_path, title, created_at, summary_snippet } objects.

Step 2 — Merge results

In the main thread:

  • Union the file paths from both agents, deduplicated
  • If a file path appears in both, it is high-confidence relevant — prioritize it
  • Limit to the 5 most relevant entries to avoid context overload (prefer recent + multi-source matches)

Step 3 — Fetch full content for top entries

Run a single command with all selected file paths at once:

tacit get <file-path-1> <file-path-2> <file-path-3> ...

Read the full file on GitHub · 73 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. 9d ago Changed 5c973d46edd3
  2. 1mo ago First seen · 73 lines · 99 tokens per session scan A 02e7956623a6

Subscribe to this mod's changes

tacit.knowledge is a skill published in the GitHub repository sangmin7648/tacit (9 stars, last pushed 9d ago), licensed MIT. It adds 99 tokens to every session and 872 once invoked, about $0.0004 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 2026-08-31.

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