why

An explanation tool for MemMesh predictions and recalled facts. It shows which stored memories support an answer, how reliable the confidence is, and when there is not enough evidence.

In plain words
What is it for?
Answering questions such as what a prediction is based on, how certain it is, or why the system declined to predict. It requires MemMesh Hosted mode for predictions.
Why use it?
It makes an agent's answer easier to check instead of leaving the reasoning unexplained. This is useful when decisions need an audit trail.

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/thinkfleetai/memmesh/why
Any agent
npx skills add ThinkfleetAI/memmesh --skill why
Clone the repo
git clone --depth 1 https://github.com/ThinkfleetAI/memmesh

Made for: Claude Code, Codex.

Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 529 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 $0.00071 $0.00529
Opus 5 $0.00036 $0.00264
Sonnet 5 $0.00014 $0.00106
Haiku 4.5 $0.00007 $0.00053

Measured 2d ago against content hash 6c8a0b8a2b3c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

why 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 2d 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.

integrations/memmesh-plugin/skills/why/SKILL.md · 53 lines

What it actually says

why

⚙️ Requires MemMesh hosted mode. Calibrated prediction and behavior discovery run on the hosted engine — set your mm- API key. On a local / open-source install these tools (memory_predict, memory_build_context) are not registered; if a call returns "unknown tool", tell the user this is a hosted capability and fall back to search / recall for what's already known.

Make MemMesh's outputs auditable. Every prediction and consolidated fact carries provenance and a calibrated confidence — this skill exposes them so a human can check the reasoning.

Provenance — what is this based on?

A prediction (from predict / memory_build_context) returns evidence memory ids. Resolve each to its content:

{ "name": "memory_recall", "arguments": { "id": "<evidence id>" } }

List the actual memories that drove the conclusion. If a fact was consolidated, its superseded ancestors show the history — that's the audit trail.

Calibration — is the confidence trustworthy?

MemMesh confidences are calibrated: 0.8 should be right ~80% of the time. To show the reliability curve (predicted vs. observed), use the hosted SDK:

const cal = await memory.lattice.getCalibration({ subjectKind: "user" });

Report the calibration error alongside the confidence, so "80%" is backed by evidence it means 80%.

Abstention — the honest "I don't know yet"

If a prediction abstained, explain the reason (insufficient/contradictory evidence, subject too new). Frame abstention as a feature: MemMesh declines rather than fabricate a confident-looking number. This is what makes it usable for EU AI Act / regulated decisions where a wrong confident answer is worse than no answer.

For regulated use

Pair this with the SDK's compliance.listAuditEvents / exportSubject to produce a full defensible record of what was known, when, and what drove a decision.

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. 2d ago First seen · 53 lines · 71 tokens per session scan A 6c8a0b8a2b3c

Subscribe to this mod's changes

why is a skill published in the GitHub repository ThinkfleetAI/memmesh (440 stars, last pushed 7d ago), licensed Apache-2.0. It adds 71 tokens to every session and 529 once invoked, about $0.0004 per session on Opus 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 2026-08-30.

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