token-flow-tracing

token-flow-tracing is a skill for Claude Code, Codex from PlamenTSV/plamen. It costs 25 tokens per session (3,088 once invoked), scanned A, original, MIT.

A security review guide that traces token movement in Aptos Move protocols across legacy Coins and newer Fungible Assets.

In plain words
What is it for?
Use it to inventory assets, entry and exit points, balance calculations, transfers, paired Coin and Fungible Asset representations, and token hooks.
Why use it?
It helps find mismatches between recorded balances and real balances, unsolicited deposits, token-type confusion, and side effects from token operations.

Skill for Claude CodeCodex

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

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/plamentsv/plamen/token-flow-tracing
Any agent
npx skills add PlamenTSV/plamen --skill token-flow-tracing
Clone the repo
git clone --depth 1 https://github.com/PlamenTSV/plamen

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 token-flow-tracing

README.md
[![agentmods](https://agentmods.dev/badge/skills/plamentsv/plamen/token-flow-tracing.svg)](https://agentmods.dev/skills/plamentsv/plamen/token-flow-tracing)
Your own site
<a href="https://agentmods.dev/skills/plamentsv/plamen/token-flow-tracing"><img src="https://agentmods.dev/badge/skills/plamentsv/plamen/token-flow-tracing.svg" alt="Measured on agentmods" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,088 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 5.1 $0.00025 $0.03088
Opus 5 $0.00013 $0.01544
Sonnet 5 $0.00005 $0.00618
Haiku 4.5 $0.00003 $0.00309

Measured 6d ago against content hash f485fc85ed23, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

token-flow-tracing 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 6d 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.

agents/skills/aptos/token-flow-tracing/SKILL.md · 253 lines

How it starts

The opening of the file, as written. The whole thing — 253 lines — stays where its author put it; the contents beside it link to each section on GitHub.

TOKEN_FLOW_TRACING Skill

Trigger Pattern: BALANCE_DEPENDENT flag (required) Inject Into: Depth-token-flow, breadth agents Purpose: Trace all token flows through Aptos Move protocols using FungibleAsset and Coin models, identifying accounting desync, unsolicited deposit vectors, type confusion, and dispatchable hook side effects

For every token the protocol handles:

1. Asset Inventory

Enumerate ALL asset types the protocol handles:

Asset Model Type Parameter / Metadata Decimals Entry Modules Exit Modules
{name} Coin / FungibleAsset {CoinType or metadata Object} {decimals} {list} {list}

Aptos dual token model:

  • Legacy Coin: Uses CoinStore<T> resource at user address. Type parameter T identifies the coin.
  • FungibleAsset (FA): Uses FungibleStore objects. Metadata object identifies the asset type.
  • Paired assets: Some tokens exist as both Coin and FA simultaneously (APT is the primary example). Check if protocol handles both representations correctly.
  • Migration tokens: Tokens migrated from Coin to FA model may have both interfaces active.

2. Token Entry Points

Where can tokens enter the protocol?

Entry Path Function Asset Model Accounting Updated? Access Control
Standard deposit {deposit_fn} {Coin/FA} YES/NO {who can call}
primary_fungible_store::deposit() External FA NO (protocol unaware) Permissionless
coin::deposit<T>() External Coin NO (protocol unaware) Permissionless (if CoinStore registered)
Direct fungible_asset::deposit() Via store ref FA NO (protocol unaware) Requires FungibleStore reference
move_to<T>() Internal Resource {depends} Module only
Side-effect receipts External call returns {varies} {depends} {depends}

Read the full file on GitHub · 253 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. 6d ago First seen · 253 lines · 25 tokens per session scan A f485fc85ed23

Subscribe to this mod's changes

token-flow-tracing is a skill published in the GitHub repository PlamenTSV/plamen (281 stars, last pushed 1mo ago), licensed MIT. It adds 25 tokens to every session and 3,088 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 2026-08-30.

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