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Toss Securities

  • 3.6k installs
  • 6.5k repo stars
  • Updated July 27, 2026
  • nomadamas/k-skill

Retrieve account balances, stock holdings, current quotes, pending orders, and market info from Toss Securities via official API or CLI fallback with read-only safety.

About

Toss Securities read-only skill provides secure account and market data retrieval through two paths: official Open API with OAuth2 Client Credentials (preferred) or tossctl CLI fallback when credentials unavailable. Supports queries for account lists, holdings, stock quotes, order status, exchange rates, and market calendars. Helper functions handle token management, rate-limit backoff (429), auto-retry (401), and sensitive data masking. Requires Node.js 18+, environment variables (TOSSINVEST_CLIENT_ID/SECRET/ACCOUNT), or tossctl login session. Read-only operations only; trading mutations out of scope.

  • OAuth2 Client Credentials flow with automatic token refresh on 401
  • Rate-limit aware with Retry-After backoff and X-RateLimit-Reset handling
  • Graceful fallback to tossctl CLI when official credentials missing
  • Sensitive data masking in error messages and conservative account exposure
  • Support for KRX and US market quotes, orders, holdings, watchlists

Toss Securities by the numbers

  • 3,594 all-time installs (skills.sh)
  • +132 installs in the week ending Jul 28, 2026 (Skillselion tracking)
  • Ranked #38 of 1,136 Finance & Trading skills by installs in the Skillselion catalog
  • Security screen: MEDIUM risk (skills.sh audit)
  • Data as of Jul 28, 2026 (Skillselion catalog sync)
At a glance

toss-securities capabilities & compatibility

Capabilities
list official accounts (oauth2) · get stock holdings per account · fetch live quote data (krx + us) · query pending and completed orders · retrieve exchange rates and market calendars · get portfolio positions and watchlists (via toss · automatic token refresh on 401 · rate limit backoff on 429
Works with
github
Use cases
data analysis
From the docs

What toss-securities says it does

helper는 내부적으로 `POST /oauth2/token` 으로 토큰을 발급(Client Credentials)받아 `Authorization: Bearer` 로 호출한다.
toss-securities/README.md
이 스킬은 조회 전용이다. 실거래 mutation 은 범위 밖이라고 분명히 말한다.
toss-securities/README.md
npx skills add https://github.com/nomadamas/k-skill --skill toss-securities

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Listed on Skillselion
Installs3.6k
repo stars6.5k
Security audit0 / 3 scanners passed
Last updatedJuly 27, 2026
Repositorynomadamas/k-skill

What it does

Read-only Toss Securities account queries: balances, holdings, quotes, orders via OAuth2 API or tossctl CLI fallback

Who is it for?

Backend integrations querying live portfolio state; agents needing market data during decision flows; applications requiring Toss Securities read-only feeds.

Skip if: Trading execution; order placement/cancellation; real-time streaming subscriptions; cross-exchange arbitrage; unauthorized credential sharing.

When should I use this skill?

User asks portfolio balance, stock price, order status, or holdings from Toss Securities; integration needs live market feed; credential setup confirmed.

What you get

Reliably query live account state and market data with transparent credential handling, automatic retry logic, and sensitive info protection.

  • getPrices(symbols) - fetch current quotes for KRX/US tickers
  • listOfficialAccounts() - retrieve account list with OAuth2
  • getHoldings(options) - get stock positions per account

By the numbers

  • Supports KRX (Korean) and US stock quotes in single call
  • OAuth2 token refresh automatic on 401 error (1 retry)
  • Rate-limit backoff respects Retry-After header or X-RateLimit-Reset

Files

SKILL.mdMarkdownGitHub ↗

Toss Securities

What this skill does

토스증권 조회 전용(read-only) 흐름을 실행한다. 두 경로가 있다.

1. 공식 Open API (권장) — 토스증권 공식 Open API(https://openapi.tossinvest.com)를 OAuth 2.0 Client Credentials 토큰으로 호출. 2. tossctl fallback — 공식 credentials가 없을 때 JungHoonGhae/tossinvest-clitossctl 을 사용.

조회 항목:

  • 계좌 목록 / 보유 주식
  • 시세(현재가/호가/체결/상하한가/캔들) / 종목 정보 / 매수 유의사항
  • 환율 / 장 운영 캘린더(KR·US)
  • 대기중 주문 조회 / 주문 상세 / 매수가능금액 / 판매가능수량 / 수수료
  • (tossctl fallback) 계좌 요약, 포트폴리오 비중, 관심종목

When to use

  • "토스증권 삼성전자 현재가 확인해줘"
  • "내 보유 주식 보여줘"
  • "대기중 주문 조회해줘"
  • "원달러 환율 알려줘"

1. Prefer the official Open API

Prerequisites

  • 토스증권 OpenAPI 콘솔에서 발급한 client_id / client_secret
  • Node.js 18+ (global fetch)

자격 증명은 사용자 환경변수로 두고 helper가 토스 서버로 직접 호출한다. 공유 프록시로 보내지 않는다.

환경변수설명
TOSSINVEST_CLIENT_IDclient id (필수)
TOSSINVEST_CLIENT_SECRETclient secret (필수)
TOSSINVEST_ACCOUNTaccountSeq. 계좌·자산·주문조회에 필요 (선택)
TOSSINVEST_API_BASE_URL기본 https://openapi.tossinvest.com (선택)

Workflow

helper는 내부적으로 POST /oauth2/token 으로 토큰을 발급(Client Credentials)받아 Authorization: Bearer 로 호출한다. 계좌·자산·주문조회 API는 X-Tossinvest-Account 헤더가 추가로 필요하다.

const {
  getPrices,
  listOfficialAccounts,
  getHoldings
} = require("toss-securities");

async function main() {
  const prices = await getPrices(["005930", "AAPL"]);

  const accounts = await listOfficialAccounts();
  const accountSeq = accounts.data.result[0].accountSeq;
  const holdings = await getHoldings({ account: accountSeq });

  console.log(prices.data);
  console.log(holdings.data);
}

main().catch((error) => {
  console.error(error);
  process.exitCode = 1;
});
  • 429Retry-After/X-RateLimit-Reset 만큼 대기 후 백오프 재시도한다.
  • 401 은 토큰을 1회 재발급해 재시도한다.
  • client_secret/토큰은 에러 메시지에서 마스킹된다.

2. tossctl fallback

공식 credentials가 없으면 비공식 tossctl 을 fallback으로 쓴다.

Install tossctl first when missing

brew tap JungHoonGhae/tossinvest-cli
brew install tossctl
tossctl doctor
tossctl auth doctor
tossctl auth login

로그인 세션이 없으면 먼저 위 흐름을 끝낸다. 다른 비공식 크롤링이나 임의 HTTP 재구현으로 우회하지 않는다.

지원하는 read-only 명령:

  • tossctl account summary --output json
  • tossctl portfolio positions --output json
  • tossctl quote get TSLA --output json
  • tossctl watchlist list --output json
  • tossctl orders completed --market all --output json

패키지 wrapper(getAccountSummary, getPortfolioPositions, getQuote, listWatchlist 등)도 그대로 쓸 수 있다.

Answer conservatively

  • 계좌번호/민감정보는 꼭 필요한 범위만 노출한다.
  • 사용자가 "오늘" 같은 상대 날짜를 말하면 절대 날짜로 풀어 답한다.
  • 이 스킬은 조회 전용이다. 실거래 mutation 은 범위 밖이라고 분명히 말한다.

Done when

  • 공식 API credentials(또는 tossctl 로그인) 상태가 확인되었다.
  • 요청에 맞는 read-only 호출을 실행했다.
  • 결과를 한국어로 짧게 정리했다.

Failure modes

  • 공식 API credentials(TOSSINVEST_CLIENT_ID/SECRET)가 없으면 TossCredentialsError 로 명확히 실패한다.
  • 계좌·자산·주문조회 helper에 X-Tossinvest-Account 가 없으면 네트워크 호출 전에 실패한다.
  • tossctl fallback은 auth login 전이면 계좌/포트폴리오 조회가 실패할 수 있다.
  • 계좌/주문 정보는 민감하므로 출력 범위를 과도하게 넓히지 않는다.

Related skills

How it compares

Official Toss Securities Open API + tossctl fallback hybrid approach balances security (OAuth2) with availability (CLI backup) for read-only Korean brokerage queries.

FAQ

Does toss-securities place trades?

toss-securities limits agents to read-only tossctl queries for accounts, portfolios, quotes, orders, and watchlists. The skill does not submit buy or sell orders and expects tossctl auth login for session access only.

What do you need before using toss-securities?

toss-securities requires macOS with Homebrew, Node.js 18+, tossctl installed from tossinvest-cli, and a completed tossctl auth login browser session before any account or quote lookup runs.

Is Toss Securities safe to install?

skills.sh reports 0 of 3 security scanners passed. Review the Security Audits panel on this page before installing in production.

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