Using tinybrain

Using TinyBrain

TinyBrain is persistent, structured memory for security work. Treat it as an extension of your own working memory: a place to write findings down the moment you notice them, link them into a graph, and read them back in a later turn or a later session instead of re-deriving them.

The failure mode this skill exists to prevent: doing a whole investigation in your head, then either forgetting the details after a context compaction or dumping an unstructured wall of text at the end. The fix is simple and habitual — capture as you go, connect what relates, and retrieve before you re-investigate.

This skill assumes the TinyBrain MCP tools are connected. If they are not, say so rather than guessing; the tools may surface with a server prefix (e.g. mcp__tinybrain__create_session) — refer to them by their logical names below regardless of prefix.

The core loop

Most security work with TinyBrain follows the same rhythm. You won't do every step every time, but keep the whole loop in mind:

1. Orient — before starting, check whether memory already exists for this work. Call list_sessions and, if you find a relevant one, get_context_summary to pull back what you already know. Resume, don't restart.
2. Open a session — create_session with the right task_type (and, for intel work, intelligence_type/classification/threat_level). One session = one engagement, challenge, or investigation. The session is the container everything else hangs off.
3. Capture — as findings appear, create_memory each one with a real category, calibrated priority/confidence, and tags. Store while you work, not at the end.
4. Connect — when two memories relate (evidence supports a finding, one vuln enables another, a mitigation addresses a weakness), create_relationship. This is what turns a pile of notes into a knowledge graph you can traverse.
5. Checkpoint — at meaningful transitions, create_context_snapshot so a future session (or you, after a compaction) can restore the working state. Track multi-stage work with create_task_progress / update_task_progress.
6. Retrieve — before re-investigating anything, search memory first. search_memories for keyword/FTS, semantic_search for "I meant the same idea in other words", get_related_entries to walk the graph from a known node.

Capture well — the part that matters most

A memory is only as useful as it is findable and trustworthy later. Five fields carry that weight; spend a moment getting them right rather than dumping defaults.

• title — specific and searchable. "SQLi in /login username param" beats "found a bug". Future-you searches by these words.
• category — the controlled vocabulary that lets you filter ("show me every exploit"). Pick the most specific fit: finding, vulnerability, exploit, payload, technique, tool, reference, context, hypothesis, evidence, recommendation, note, plus intelligence categories (osint, ioc, threat_actor, ...). Full list and meanings in references/memory-hygiene.md.
• priority (0–10) — triage signal. Calibrate honestly: a critical, exploitable finding is 9–10; a passing observation is 1–2. If everything is priority 7, nothing is. This drives check_high_priority_memories and ranking.
• confidence (0.0–1.0) — how sure you are. A verified, reproduced finding is ~0.95; an untested hunch is ~0.3. Storing a low-confidence hypothesis is good — it's a TODO with a paper trail — but label it honestly so you don't later mistake a guess for a fact.
• tags — cross-cutting handles that category can't express (auth, idor, the target host, the CWE). These make tag-search and later correlation work.

When a finding maps to MITRE ATT&CK, pass mitre_tactic / mitre_technique (e.g. T1190); TinyBrain stores them as searchable tags so you can later pull "everything tagged Initial Access". See the domain skills for when this pays off.

Why store as you go: the value compounds only if the record exists before you need it. A finding you "remember to log later" is one a compaction can erase first. Logging it the moment you confirm it costs one tool call and buys durability.

Connect — build the graph, not a list

Relationships are what make TinyBrain more than a notepad. When you create a memory that relates to an existing one, link them with create_relationship using the type that names the actual relationship: evidence → supports → vulnerability, vulnerability → exploits, mitigation → mitigates → weakness, finding → depends_on → finding. The full vocabulary (depends_on, causes, mitigates, exploits, references, contradicts, supports, related_to, parent_of, child_of) is in references/memory-hygiene.md.

The payoff comes at retrieval: from any node, get_related_entries walks the graph — so from a vulnerability you can reach its evidence, its exploit, and the recommendation that closes it, without remembering their titles.

Retrieve — never re-derive what you already found

Before re-investigating a host, re-reading a function, or re-deriving a conclusion, search first. Pick the retrieval mode that fits:

• search_memories — keyword / full-text. Best when you know roughly what words are in it.
• semantic_search — conceptual similarity. Best when you remember the idea, not the wording.
• get_related_entries — graph traversal from a known memory.
• get_context_summary — a session-level digest; call it when resuming work to reload the whole picture at once.
• find_similar_memories / check_duplicates — before storing, to avoid logging the same finding twice.

Orient at the start of security work

When the user opens (or returns to) a security task and TinyBrain is connected, take a beat to orient before diving in: list_sessions to see if this work already has a home, and get_context_summary on the relevant session to reload findings. This is the single highest -leverage habit — it's what makes memory feel continuous instead of amnesiac.

Anti-patterns to avoid

• Hoarding without retrieving. Storing is half the loop; if you never search, you've just made write-only notes. Search before you re-investigate.
• Flat priority/confidence. Defaulting everything to 5 / 0.5 throws away the triage signal the schema exists to capture.
• Orphan memories. A finding with no relationships is hard to navigate to later. Link it.
• End-of-session data dumps. Storing everything at the end defeats the durability purpose and usually loses detail. Capture in the moment.
• Re-deriving silently. If you find yourself re-reading the same code or re-scanning the same host, you skipped a search.

Going deeper

• references/memory-hygiene.md — full category, priority, confidence, and relationship vocabularies with calibration guidance.
• references/tool-reference.md — all TinyBrain tools grouped by purpose, with when to use each.
• For specific engagement types, see the companion skills: tinybrain-code-review, tinybrain-ctf, and tinybrain-threat-intel. They build on this loop with workflow tailored to each domain.