store-data

store-data is a skill for Claude Code, Codex from markmhendrickson/neotoma. It costs 20 tokens per session (506 once invoked), scanned A, original, MIT.

A tool for saving structured records and files in persistent memory while keeping their source information and links to related records. It can store items such as contacts, tasks, events, transactions, notes, PDFs, CSVs, and images.

In plain words
What is it for?
Use it to save extracted entities or files, check for existing records, add relationships, and safely repeat storage operations without creating duplicates.
Why use it?
It gives stored information a consistent place and helps prevent duplicate records. Source details and relationships make the saved data easier to trust and use later.

Skill for Claude CodeCodex

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

Good fit Use it to save extracted entities or files, check for existing records, add relationships, and safely repeat storage operations without creating duplicates.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/markmhendrickson/neotoma/store-data
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 markmhendrickson/neotoma --skill store-data
Clone the repo
git clone --depth 1 https://github.com/markmhendrickson/neotoma

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 store-data

README.md
[![agentmods](https://agentmods.dev/badge/skills/markmhendrickson/neotoma/store-data/github.svg)](https://agentmods.dev/skills/markmhendrickson/neotoma/store-data)
Your own site
<a href="https://agentmods.dev/skills/markmhendrickson/neotoma/store-data"><img src="https://agentmods.dev/badge/skills/markmhendrickson/neotoma/store-data/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 store-data

Your own site · 80×15
<a href="https://agentmods.dev/skills/markmhendrickson/neotoma/store-data"><img src="https://agentmods.dev/badge/skills/markmhendrickson/neotoma/store-data.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 506 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00020 $0.00506
Opus 5 $0.00010 $0.00253
Sonnet 5 $0.00004 $0.00101
Haiku 4.5 $0.00002 $0.00051

Measured 7d ago against content hash 21c4cf6bf2f8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

store-data 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 7d 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.

skills/store-data/SKILL.md · 57 lines

What it actually says

Store Data in Neotoma

When to use

When the user wants to persist structured data (contacts, tasks, events, transactions, notes, etc.) or files (PDFs, CSVs, images) into Neotoma's memory layer.

Workflow

  1. Check for existing records before storing to avoid duplicates.

    • Use retrieve_entity_by_identifier for names, emails, or identifiers.
    • Use retrieve_entities with entity_type filter for related records.
  2. Extract entities from the user's message or attached files.

    • Use descriptive entity_type values (contact, task, event, transaction, receipt, note, etc.).
    • Include ALL fields from the source data; unknown fields go to raw_fragments automatically.
  3. Store with a single call when possible.

    • Use the MCP store tool for entities-only, file-only (bytes → content-addressed source row), or combined file + entities + optional interpretation.
    • Always include idempotency_key for replay safety.
  4. Link related entities using create_relationship.

    • PART_OF: message belongs to conversation, item belongs to container.
    • REFERS_TO: message references an entity.
    • EMBEDS: container holds an asset (file).
    • SUPERSEDES: new version replaces old.
  5. Confirm storage using memory-related language ("stored in memory", "will remember").

Entity type discovery

Before inventing a new entity_type, check what schemas already exist:

  • Use list_entity_types with a keyword search.
  • If no match, use a descriptive snake_case type; Neotoma auto-creates the schema.

Required fields

  • idempotency_key: unique per store call (e.g. conversation-{id}-{turn}-{timestamp})
  • entity_type: descriptive type for each entity
  • All source fields: include everything, not just known schema fields

Do not

  • Skip the duplicate check for named entities (people, companies, places).
  • Omit fields from source data because they are not in the schema.
  • Store without an idempotency_key.
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. 7d ago First seen · 57 lines · 20 tokens per session scan A 21c4cf6bf2f8

Subscribe to this mod's changes

store-data is a skill published in the GitHub repository markmhendrickson/neotoma (32 stars, last pushed yesterday), licensed MIT. It adds 20 tokens to every session and 506 once invoked, about $0.0001 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 2026-09-03.

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