Agent skill

Finnhub

API de datos financieros completa: stocks US/global, forex, crypto, fundamentales, noticias, earnings, recomendaciones, WebSocket.

MITAuto-check passedBackend & APIs

Install Finnhub

skills CLI

$ npx skills add gauss314/skills --skill finnhub -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install gauss314/skills finnhub --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/gauss314/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/finnhub .claude/skills/finnhub && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "finnhub" agent skill from https://github.com/gauss314/skills/tree/main/skills/finnhub into .claude/skills/finnhub/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "finnhub", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/gauss314/skills/tree/main/skills/finnhub

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add gauss314/skills --skill finnhub -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install gauss314/skills finnhub --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/gauss314/skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/finnhub .agents/skills/finnhub && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "finnhub" agent skill from https://github.com/gauss314/skills/tree/main/skills/finnhub into .agents/skills/finnhub/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "finnhub", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add gauss314/skills --skill finnhub -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install gauss314/skills finnhub --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/gauss314/skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/finnhub .cursor/skills/finnhub && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "finnhub" agent skill from https://github.com/gauss314/skills/tree/main/skills/finnhub into .cursor/skills/finnhub/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "finnhub", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/gauss314/skills.git --path skills/finnhub

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add gauss314/skills --skill finnhub -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install gauss314/skills finnhub --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/gauss314/skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/finnhub .gemini/skills/finnhub && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "finnhub" agent skill from https://github.com/gauss314/skills/tree/main/skills/finnhub into .gemini/skills/finnhub/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "finnhub", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install gauss314/skills finnhub

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add gauss314/skills --skill finnhub -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/gauss314/skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/finnhub .github/skills/finnhub && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "finnhub" agent skill from https://github.com/gauss314/skills/tree/main/skills/finnhub into .github/skills/finnhub/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "finnhub", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add gauss314/skills --skill finnhub -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install gauss314/skills finnhub --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/gauss314/skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/finnhub .opencode/skills/finnhub && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "finnhub" agent skill from https://github.com/gauss314/skills/tree/main/skills/finnhub into .opencode/skills/finnhub/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "finnhub", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: finnhub
GitHub stars: 248
Token cost: ~2k tokens
SKILL.md length: 603 words
Files: 5 (incl. scripts, references)
Skills in repo: 32
Repo updated: Jun 14, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

API de datos financieros completa: stocks US/global, forex, crypto, fundamentales, noticias, earnings, recomendaciones, WebSocket.

Works in 5 steps: Cotización en tiempo real → Perfil de empresa → Noticias de una empresa → …
Tasks that involve Realtime and WebSockets
SKILL.md covers ⚠️ IMPORTANTE: Endpoints Free…, Autenticación, Rate Limits and Uso Rápido, plus 4 more sections
Runs Python scripts from its folder; reaches finnhub.io; needs API_KEY and FINNHUB_API_KEY

What it does

Finnhub is an agent skill from gauss314/skills. API de datos financieros completa: stocks US/global, forex, crypto, fundamentales, noticias, earnings, recomendaciones, WebSocket. 60 calls/min gratis.

Its SKILL.md is about 2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including scripts and reference files (for example `references/ENDPOINTS.md`, `scripts/download_multiple.py` and `scripts/finnhub_cli.py`).

It sits in Backend & APIs, covering Realtime and WebSockets. The repository describes itself as: Financial market data consumption skills for claude code and AI agents. The licence is MIT.

When your agent uses it

Tasks that involve Realtime and WebSockets

Example prompts

“/finnhub”

Requirements

Python 3
A credential in API_KEY
A credential in FINNHUB_API_KEY

Workflow steps

5 steps, taken from the step headings in SKILL.md.

Cotización en tiempo real
Perfil de empresa
Noticias de una empresa
Velas OHLCV diarias
Búsqueda de símbolos

What it can do on your machine

Read from SKILL.md and the folder at commit 5156f81. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 3 files in scripts/ (Python), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
- finnhub.io
Also links to:
- github.com
- status.finnhub.io
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
- API_KEY
- FINNHUB_API_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Finnhub loads about 2k tokens when it runs, and up to ~5.5k if it reads all its reference files. Until then it costs about 40 tokens; SKILL.md has 603 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~40
When it runs · the whole SKILL.md, loaded when a task matches: ~2k
With references · SKILL.md plus every file in references/, read only if the agent opens them: ~5.5k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from gauss314/skills at commit 5156f81, republished under its MIT licence (© gauss314). 603 words, ~2,016 tokens.

Download SKILL.mdSave it as .claude/skills/finnhub/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.

name: finnhub
description: API de datos financieros completa: stocks US/global, forex, crypto, fundamentales, noticias, earnings, recomendaciones, WebSocket. 60 calls/min gratis.
license: MIT
metadata.category: finanzas, api, stocks, forex, crypto, noticias, eeUU, global
metadata.language: es
metadata.source: https://finnhub.io/docs/api

Finnhub API — Datos Financieros en Tiempo Real

API REST con 32 endpoints gratuitos que cubre: cotizaciones en vivo, velas OHLCV, perfiles de empresa, fundamentales, noticias, forex, crypto, datos económicos, calendario de earnings y WebSocket.

Base URL: https://finnhub.io/api/v1 Documentación oficial: finnhub.io/docs/api Pricing: finnhub.io/pricing

⚠️ IMPORTANTE: Endpoints Free vs Premium

Este skill documenta todos los endpoints, pero marca claramente cuáles son:

✅ FREE — Funcionan con el plan gratuito (60 calls/min, sin tarjeta)
🔒 PREMIUM — Requieren plan pago (Starter $11.99/mes+, Professional $49.99/mes o Enterprise)

NOTA CRÍTICA: El plan gratuito de Finnhub es mucho más limitado de lo que su documentación sugiere. Según pruebas con una API key gratuita real (2026), solo los siguientes endpoints funcionan:

/quote (cotización), /stock/profile2 (perfil empresa), /stock/peers (pares), /stock/earnings (earnings)

/stock/recommendation (recomendaciones), /stock/metric (métricas), /news (noticias mercado)

/company-news (noticias empresa), /search (búsqueda), /stock/market-status (estado mercado)

Endpoints como stock/candle (velas OHLCV), stock/financials, stock/price-target, stock/dividend, forex/rates, crypto/candle requieren plan pago.

Ver la tabla completa en references/ENDPOINTS.md.

Autenticación

Obtener API Key (GRATIS, sin tarjeta de crédito)

Ir a: https://finnhub.io/register
Crear cuenta (email + contraseña)
Copiar la API Key del dashboard: https://finnhub.io/dashboard
Plan gratuito: 60 calls/minuto, 30 calls/segundo máximo

Usar la API Key

python

import os
API_KEY = os.getenv("FINNHUB_API_KEY")  # Recomendado (variable de entorno)
# O directamente en tests:
# API_KEY = "tu_api_key_aqui"

bash

# Header (recomendado)
X-Finnhub-Token: tu_api_key

# O query param
?token=tu_api_key

⚠️ NUNCA hardcodear la API key en código compartido.

Rate Limits

Límite	Plan Free	Starter ($11.99/mes)	Professional ($49.99/mes)	Enterprise ($3500/mes)
Calls/minuto	60	300+	300+	900 (market), 300 (fund)
Calls/segundo	30 (global)	30 (global)	30 (global)	30 (global)
WebSocket símbolos	50	Ilimitado	Ilimitado	Ilimitado
Historia OHLCV	Limitada	30+ años	30+ años	30+ años
Noticias	1 año	20 años	20 años	20 años
Cobertura fundamental	US	Global	Global	Global

Tip: si recibís HTTP 429, esperá 1-2 segundos antes de reintentar.

Uso Rápido

1. Cotización en tiempo real

python

import requests

API_KEY = "tu_api_key"
BASE = "https://finnhub.io/api/v1"

r = requests.get(f"{BASE}/quote", params={"symbol": "AAPL", "token": API_KEY})
quote = r.json()
print(f"AAPL: ${quote['c']:.2f} ({quote['dp']:+.2f}%)")

2. Perfil de empresa

python

r = requests.get(f"{BASE}/stock/profile2", params={"symbol": "AAPL", "token": API_KEY})
profile = r.json()
print(f"{profile['name']} | {profile['finnhubIndustry']} | Market Cap: ${profile['marketCapitalization']/1000:.2f}B")

3. Noticias de una empresa

python

r = requests.get(f"{BASE}/company-news", params={
    "symbol": "AAPL", "from": "2025-01-01", "to": "2025-01-15", "token": API_KEY
})
for article in r.json()[:3]:
    print(f"  {article['headline'][:80]}...")

4. Velas OHLCV diarias

python

import time
end = int(time.time())
start = end - (90 * 86400)  # 90 días
r = requests.get(f"{BASE}/stock/candle", params={
    "symbol": "AAPL", "resolution": "D",
    "from": start, "to": end, "token": API_KEY
})
candles = r.json()
print(f"Status: {candles['s']}, velas: {len(candles['c'])}")

5. Búsqueda de símbolos

python

r = requests.get(f"{BASE}/search", params={"q": "microsoft", "token": API_KEY})
for result in r.json()["result"]:
    print(f"{result['symbol']}: {result['description']} ({result['type']})")

Scripts Disponibles

Script	Descripción	Endpoints que usa
finnhub_client.py	Cliente Python completo con todos los endpoints gratuitos	quote, candle, profile2, peers, metric, financials, earnings, recommendation, price-target, company-news, news, forex, crypto, search, economic, market-status, dividends, splits, calendar
finnhub_cli.py	Interfaz de línea de comandos para consultas rápidas	quote, profile2, search, news, peers, earnings, market-status
download_multiple.py	Descarga batches de datos por categorías	quote, candle, metric, financials, earnings, recommendation, company-news

Show full SKILL.md (247 more words)Show less

Cobertura de la API (según pruebas con key gratuita real)

Categoría	Endpoints	Free	Premium
Cotizaciones	quote	✅	—
Perfil empresa	profile2, peers	✅	—
Earnings	earnings (4 quarters free)	✅	—
Recomendaciones	recommendation (~8 meses)	✅	—
Métricas (133)	metric (sin historia, solo último valor)	✅	—
Noticias	company-news, news	✅	—
Búsqueda	search	✅	—
Estado mercado	market-status	✅	—
Velas OHLCV	candle	—	🔒 Premium
Estados financieros	financials, financials-reported, price-target	—	🔒 Premium
Dividendos/Splits	dividend, split	—	🔒 Premium
Forex	rates, candle, exchange, symbol	—	🔒 Premium
Crypto	candle, exchange, symbol	—	🔒 Premium
Económico	economic/code, economic, country	—	🔒 Premium
Símbolos	stock/symbol, market-holiday, ipo-calendar	—	🔒 Premium
WebSocket	Trades (50 símbolos)	—	🔒 Premium
Insider, Ownership	insider-transactions, ownership, etc.	—	🔒 Premium
Estimates	eps-estimate, revenue-estimate, etc.	—	🔒 Premium
ETFs, Índices, Bonos	etf/profile, etf/holdings, index/constituents, bond/price, etc.	—	🔒 Premium
Alternativos	social-sentiment, covid-19, esg-score, etc.	—	🔒 Premium

⚠️ Esta tabla está basada en pruebas reales con una API key gratuita en junio 2026. Finnhub cambia su política de acceso periódicamente. Verificar siempre en la documentación oficial.

Buenas Prácticas

Usar variable de entorno FINNHUB_API_KEY en vez de hardcodear
Cachear resultados: los datos fundamentales cambian poco (especialmente company profile, financials)
Rate limiting: 60 calls/min gratis = 1 call por segundo como mínimo
Evitar endpoints premium con key gratuita — recibirás error "You don't have access to this resource."
WebSocket: solo 1 conexión por API key, 50 símbolos en free
Reutilizar sesión HTTP para mejor performance (requests.Session())
No usar para trading de alta frecuencia: API pública, sin garantía de latencia ultra-baja

Recursos

Files

SKILL.md and 4 other files (scripts, references) in skills/finnhub of gauss314/skills.

SKILL.md
references/ENDPOINTS.md
scripts/download_multiple.py
scripts/finnhub_cli.py
scripts/finnhub_client.py

Open the folder on GitHubat commit 5156f81

Compare with similar skills

Finnhub next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Finnhub compared with similar skills
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AI-Trader Heartbeat PollingHKUDS/AI-Trader	23k	—	~1.6k	Automated safety check: Pass	None	4 mo ago

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Questions about Finnhub

What does Finnhub do?

API de datos financieros completa: stocks US/global, forex, crypto, fundamentales, noticias, earnings, recomendaciones, WebSocket. Finnhub is an agent skill from gauss314/skills. API de datos financieros completa: stocks US/global, forex, crypto, fundamentales, noticias, earnings, recomendaciones, WebSocket.

When should I use Finnhub?

Finnhub fits situations like: tasks that involve Realtime and WebSockets.

How do I install Finnhub in Claude Code?

Run `npx skills add gauss314/skills --skill finnhub -a claude-code`. Or copy the skill folder (skills/finnhub in gauss314/skills) into .claude/skills/finnhub in your project. Claude Code loads it when a task matches its description.

How do I install Finnhub in Codex?

Run `npx skills add gauss314/skills --skill finnhub -a codex`. Or copy the skill folder (skills/finnhub in gauss314/skills) into .agents/skills/finnhub in your project. Codex loads it when a task matches its description.

Can I use Finnhub in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add gauss314/skills --skill finnhub -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/finnhub, .gemini/skills/finnhub, .github/skills/finnhub and .opencode/skills/finnhub in your project.

What does Finnhub need to run?

Going by SKILL.md and its folder, Finnhub needs Python for the scripts in its folder and credentials named API_KEY and FINNHUB_API_KEY. Our summary lists: Python 3; A credential in API_KEY; A credential in FINNHUB_API_KEY.

Does Finnhub access the network?

SKILL.md names 3 domains. In commands or code: finnhub.io; the agent is likely to contact it when it follows the instructions. As links in the text: github.com and status.finnhub.io. This is read from the text; nothing was executed.

Is Finnhub safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Finnhub use?

Finnhub is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Finnhub use?

About 2k tokens (SKILL.md is roughly 8.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3.5k tokens, read only when the agent opens those files.

What are the alternatives to Finnhub?

Skills that share tags, products or a category with Finnhub: Binance Datatool (lostleaf/binance-datatool, 148 stars), Polymarket (2025Emma/vibe-coding-cn, 23k stars), Binance Wallet Tracker (binance/binance-skills-hub, 1.1k stars) and Crypto Executor (LeoYeAI/openclaw-master-skills, 2.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Finnhub?

gauss314 (a GitHub user) maintains it in gauss314/skills, which has 248 GitHub stars. The repository holds 32 skills in this directory. The repository was last updated on June 14, 2026.

Source: gauss314/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Finnhub

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Finnhub API — Datos Financieros en Tiempo Real

⚠️ IMPORTANTE: Endpoints Free vs Premium

Autenticación

Obtener API Key (GRATIS, sin tarjeta de crédito)

Usar la API Key

Rate Limits

Uso Rápido

1. Cotización en tiempo real

2. Perfil de empresa

3. Noticias de una empresa

4. Velas OHLCV diarias

5. Búsqueda de símbolos

Scripts Disponibles

Cobertura de la API (según pruebas con key gratuita real)

Buenas Prácticas

Recursos

Files

Compare with similar skills

Similar skills

More from gauss314/skills

Related

Questions about Finnhub