public

A persistent memory and knowledge-graph skill for AI agents. It stores information across sessions and supports searching, timelines, linked entities, and related memory operations.

In plain words
What is it for?
It is for saving and retrieving long-term project knowledge, loading context about a topic, tracking how information changes, and finding contradictions.
Why use it?
It reduces the need to repeat project context and makes it easier to find earlier decisions, facts, and relationships.

Skill for Claude CodeCodex

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 skills/shawnhack/exocortex/public
Any agent
npx skills add shawnhack/exocortex --skill public
Clone the repo
git clone --depth 1 https://github.com/shawnhack/exocortex

Made for: Claude Code, Codex.

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 478 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 $0.00000 $0.00478
Opus 5 $0.00000 $0.00239
Sonnet 5 $0.00000 $0.00096
Haiku 4.5 $0.00000 $0.00048

Measured yesterday against content hash 08d13b9ee729, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

public 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.

packages/server/public/SKILL.md · 54 lines

How it starts

The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.

exocortex

Persistent long-term memory for AI agents. Store, search, and reason over knowledge that persists across sessions. Semantic search, knowledge graphs, temporal reasoning, and self-improving retrieval.

Tools

Core

  • memory_store — Store knowledge with content, tags, importance (0-1), tier, namespace
  • memory_search — Hybrid search (vector + FTS + graph). Use expanded_query for better recall, compact for token efficiency
  • memory_get — Fetch full memory content by ID
  • memory_context — Load broad context for a topic. Use deep=true for LLM-driven iterative retrieval
  • memory_update — Update memory content, tags, importance, or metadata
  • memory_forget — Soft-delete a memory

Intelligence

  • memory_project_snapshot — Project context: goals, decisions, threads, techniques
  • memory_contradictions — Find contradictory facts in stored knowledge
  • memory_timeline — Track topic evolution over time
  • memory_diff — Compare memory state between time periods

Knowledge Graph

  • memory_entities — Browse extracted entities (people, projects, tech)
  • memory_graph — Entity relationship graph with centrality scores
  • memory_link — Create explicit connections between memories

Ingestion

  • memory_ingest — Ingest documents/URLs with automatic chunking
  • memory_research — Web research with automatic knowledge storage

Goals & Predictions

  • goal — Track goals with milestones and progress
  • prediction — Make and resolve predictions for calibration

Usage Pattern

Session start:

  1. memory_context with topic → load relevant background
  2. memory_project_snapshot → goals, decisions, open threads

During work: 3. memory_search for specific knowledge retrieval 4. memory_store to persist decisions, discoveries, techniques

Session end: 5. Store session summary and key learnings

Authentication

Set auth.token in DB settings. Pass via Authorization: Bearer <token> or X-Exocortex-Token.

Read the full file on GitHub · 54 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 54 lines · 0 tokens per session scan A 08d13b9ee729

Subscribe to this mod's changes

public is a skill published in the GitHub repository shawnhack/exocortex (1 stars, last pushed 27d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 478 tokens. 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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