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ts-sdk-types

ts-sdk-types is a skill for Claude Code from aptos-labs/aptos-agent-skills. It costs 74 tokens per session (1,445 once invoked), scanned A, original, MIT.

A reference for converting Aptos blockchain Move types into safe TypeScript types using the Aptos TypeScript SDK. Move is the programming language used for Aptos smart contracts.

In plain words
What is it for?
Use it when writing TypeScript code that passes Move function arguments, handles generic type arguments, reads large integers, or works with Aptos addresses and type tags.
Why use it?
It prevents incorrect number and address handling, especially where JavaScript numbers cannot represent large blockchain values exactly.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the aptos-agent-skills plugin — 16 skills shipped together

not rated 19repo 2mo ago A scan 74 tokens original MIT

Good fit Use it when writing TypeScript code that passes Move function arguments, handles generic type arguments, reads large integers, or works with Aptos addresses and type tags.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/aptos-labs/aptos-agent-skills/ts-sdk-types
View source ↗ aptos-labs/aptos-agent-skills
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 aptos-labs/aptos-agent-skills --skill ts-sdk-types
Clone the repo
git clone --depth 1 https://github.com/aptos-labs/aptos-agent-skills

Made for: Claude Code.

Or install aptos-agent-skills, the plugin that ships this one along with the rest of its 16 skills.

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 ts-sdk-types

README.md
[![agentmods](https://agentmods.dev/badge/skills/aptos-labs/aptos-agent-skills/ts-sdk-types/github.svg)](https://agentmods.dev/skills/aptos-labs/aptos-agent-skills/ts-sdk-types)
Your own site
<a href="https://agentmods.dev/skills/aptos-labs/aptos-agent-skills/ts-sdk-types"><img src="https://agentmods.dev/badge/skills/aptos-labs/aptos-agent-skills/ts-sdk-types/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 ts-sdk-types

Your own site · 80×15
<a href="https://agentmods.dev/skills/aptos-labs/aptos-agent-skills/ts-sdk-types"><img src="https://agentmods.dev/badge/skills/aptos-labs/aptos-agent-skills/ts-sdk-types.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,445 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.
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 $0.00074 $0.01445
Opus 5 $0.00037 $0.00723
Sonnet 5 $0.00015 $0.00289
Haiku 4.5 $0.00007 $0.00145

Measured 10d ago against content hash 574baec7f954, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

ts-sdk-types 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 10d 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/sdk/typescript/ts-sdk-types/SKILL.md · 158 lines

How it starts

The opening of the file, as written. The whole thing — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.

TypeScript SDK: Types (Move ↔ TypeScript)

Purpose

Guide type mapping between Move and TypeScript when using @aptos-labs/ts-sdk: numeric types (especially u128/u256), address, TypeTag, and functionArguments / typeArguments.

ALWAYS

  1. Use bigint for u128 and u256 – in both view results and functionArguments; JavaScript number loses precision above 2^53.
  2. Use string for address in payloads – e.g. "0x1" or accountAddress.toString(); SDK accepts AccountAddressInput (string or AccountAddress).
  3. Use typeArguments for generic Move functions – e.g. coin type ["0x1::aptos_coin::AptosCoin"] for coin::balance or coin::transfer.
  4. Cast view results explicitly when you know the Move return type – e.g. BigInt(result[0] as string) for u128.

NEVER

  1. Do not use number for u128/u256 – precision loss; use bigint.
  2. Do not pass raw number for large u64 in entry/view – use bigint if value can exceed Number.MAX_SAFE_INTEGER.
  3. Do not omit typeArguments when the Move function has type parameters (e.g. balance<CoinType>).

Move → TypeScript (summary)

Move type TypeScript type Example
u8, u16, u32 number 255, 65535
u64 number | bigint Prefer bigint for large values
u128, u256 bigint BigInt("340282366920938463463374607431768211455")
i8..i64 (Move 2.3+) number | bigint Use bigint for i64 when large
i128, i256 bigint BigInt("-...")
bool boolean true
address string "0x1"
signer — Not passed from TS; signer is the transaction sender
vector Uint8Array | string (hex) new Uint8Array([1,2,3]) or hex
vector T[] [1, 2, 3]
String string "hello"
Object string (object address) objectAddress.toString()
Option T | null Value or null

Read the full file on GitHub · 158 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. 10d ago First seen · 158 lines · 74 tokens per session scan A 574baec7f954

Subscribe to this mod's changes

ts-sdk-types is a skill published in the GitHub repository aptos-labs/aptos-agent-skills (19 stars, last pushed 2mo ago), licensed MIT. It adds 74 tokens to every session and 1,445 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.

LanguagesTypeScriptWeb3 and blockchainagent-skillsblockchain
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