# Fintel Data

Query Fintel (fintel.io) institutional market data through its REST API or official MCP...

- Repository: https://github.com/himself65/finance-skills (3487 stars)
- Category: Security
- License: MIT
- Last updated: 2026-10-25
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add himself65/finance-skills --skill fintel-data -g -a claude-code -y`
Codex: `npx skills add himself65/finance-skills --skill fintel-data -g -a codex -y`
Cursor: `npx skills add himself65/finance-skills --skill fintel-data -g -a cursor -y`
Gemini CLI: `npx skills add himself65/finance-skills --skill fintel-data -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add himself65/finance-skills`

## Description

Query Fintel (fintel.io) institutional market data through its REST API or official MCP server. Use this skill whenever the user mentions Fintel or asks about short interest, short interest ratio or days to cover, short squeeze data, borrow rate or cost to borrow, shares available to borrow, daily short volume, fails-to-deliver (FTD), 13F institutional owners ("who owns X"), insider buying or selling from SEC Form 3/4/5, analyst price targets, ratings and forecasts, dividend or earnings history and calendars, EOD or last prices, security lookup by ticker, CUSIP, ISIN, or FIGI, Fintel leaderboards, or their Fintel watchlists and alerts. Read-only: GET endpoints only.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Fintel Data Skill

If your host has not already executed the shell probes below (for example, in Codex), run the commands inside the `!` wrappers with its shell tool before choosing a setup path. Use the actual output; if shell access is unavailable, report that limitation.

Fintel ([fintel.io](https://fintel.io)) is an institutional-grade market
intelligence platform.
Its strongest datasets are the ones most other providers lack: **short
interest, borrow rates, short volume, fails-to-deliver, 13F institutional
ownership, and insider transactions**.

Fintel exposes two surfaces backed by the same data contract:

| Surface | Endpoint | Auth | Best for |
|---|---|---|---|
| **REST** | `https://api.fintel.io/v1/*` | `X-API-KEY` header | Default, curl from any CLI agent |
| **MCP** | `https://mcp.fintel.io/mcp` | `X-API-KEY` header | MCP-native clients, tool auto-discovery |

Both require a Fintel API key. **This skill is read-only**, only call
GET endpoints. The API also exposes write endpoints (create/delete stock
lists, alert subscriptions, teams); do not call them.

---

## Step 1: Resolve FINTEL_API_KEY

The skill resolves `FINTEL_API_KEY` in this order:
1. `FINTEL_API_KEY` environment variable
2. `FINTEL_API_KEY` in `.env` in the current directory
3. `FINTEL_API_KEY` in `.env` at the git repo root (so a worktree inherits the key from the main checkout)

```
!`if [ -n "$FINTEL_API_KEY" ]; then echo "KEY_FROM_ENV_VAR"; elif [ -f .env ] && grep -qE "^FINTEL_API_KEY=" .env; then echo "KEY_FROM_LOCAL_DOTENV:$(pwd)/.env"; else GIT_COMMON=$(git rev-parse --path-format=absolute --git-common-dir 2>/dev/null); if [ -n "$GIT_COMMON" ]; then ROOT=$(dirname "$GIT_COMMON"); if [ -f "$ROOT/.env" ] && grep -qE "^FINTEL_API_KEY=" "$ROOT/.env"; then echo "KEY_FROM_ROOT_DOTENV:$ROOT/.env"; else echo "KEY_NOT_SET"; fi; else echo "KEY_NOT_SET"; fi; fi`
```

Then act on the result:

The rest: https://github.com/himself65/finance-skills/blob/HEAD/plugins/data-providers/skills/fintel-data/SKILL.md