Finance Skills is a collection of agent skills for financial analysis and trading, covering activities such as company valuation, earnings research, market analysis, and options calculations. It is for users who want coding agents to perform structured finance workflows, and the catalogue contains its skills, plugins, instructions, and MCP integration.
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.
npx skills add himself65/finance-skills --skill yc-readergit clone --depth 1 https://github.com/himself65/finance-skillsWrote 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.
[](https://agentmods.dev/skills/himself65/finance-skills/yc-reader)<a href="https://agentmods.dev/skills/himself65/finance-skills/yc-reader"><img src="https://agentmods.dev/badge/skills/himself65/finance-skills/yc-reader/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.
<a href="https://agentmods.dev/skills/himself65/finance-skills/yc-reader"><img src="https://agentmods.dev/badge/skills/himself65/finance-skills/yc-reader.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Privilege Escalation · line 41 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00116 | $0.01856 |
| Opus 5.5 | $0.00046 | $0.00742 |
| Sonnet 5.5 | $0.00023 | $0.00371 |
| Haiku 4.5 | $0.00012 | $0.00186 |
Grade B, and why
yc-reader scanned grade B with 2 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 8d 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
sudo apt-get install jq Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
**No authentication required.** The API is public and free. Just use `curl` to fetch JSON endpoints. How it starts
The opening of the file, as written. The whole thing — 162 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Y Combinator Reader (Read-Only)
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.
Fetches Y Combinator company data from the yc-oss/api, an unofficial open-source API that indexes all publicly launched YC companies. The data is sourced from YC's Algolia search index and updated daily via GitHub Actions.
This is a read-only data source. It provides company profiles, batch listings, industry/tag breakdowns, hiring status, and diversity data. No write operations exist — the API serves static JSON files.
No authentication required. The API is public and free. Just use curl to fetch JSON endpoints.
Step 1: Verify Prerequisites
This skill only needs curl (to fetch data) and jq (to parse/filter JSON). Both are pre-installed on most systems.
!`(command -v curl > /dev/null && echo "CURL_OK" || echo "CURL_MISSING") && (command -v jq > /dev/null && echo "JQ_OK" || echo "JQ_MISSING")`
If JQ_MISSING, install it:
# macOS
brew install jq
# Linux (Debian/Ubuntu)
sudo apt-get install jq
If jq is unavailable, you can still fetch raw JSON with curl and parse it inline with Python or other tools — but jq makes filtering much easier.
Step 2: Identify What the User Needs
Match the user's request to the appropriate endpoint. See references/api_reference.md for full details.
| User Request | Endpoint | Notes |
|---|---|---|
| Overall YC stats | meta.json |
Company count, batch list, industry/tag lists |
| All companies | companies/all.json |
Full dataset (~5,700 companies) — large response |
| Top companies | companies/top.json |
~91 top-performing YC companies |
| Companies hiring | companies/hiring.json |
~1,400 currently hiring |
| Non-profit companies | companies/nonprofit.json |
YC-backed non-profits |
| Diversity data | companies/black-founded.json, hispanic-latino-founded.json, women-founded.json |
Founder diversity |
| Specific batch | batches/{batch-name}.json |
e.g., winter-2026.json, spring-2026.json, fall-2025.json |
| Single company profile | batches/{batch-name}/{slug}.json |
e.g., batches/summer-2009/stripe.json, batches/winter-2009/airbnb.json |
| By industry | industries/{industry}.json |
e.g., fintech.json, healthcare.json |
| By tag | tags/{tag}.json |
e.g., ai.json, developer-tools.json |
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 8d ago Changed · +2 lines 1172f3200a96
- 1mo ago Changed · -12 lines · -78 tokens per session abfd6873a135
- 1mo ago First seen · 172 lines · 194 tokens per session scan B 4616326fae08
yc-reader is a skill published in the GitHub repository himself65/finance-skills (3,460 stars, last pushed 2d ago), licensed MIT. It adds 116 tokens to every session and 1,856 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it B with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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