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 carta/plugins --skill carta-valuation-historygit clone --depth 1 https://github.com/carta/pluginsWrote 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/carta/plugins/carta-valuation-history)<a href="https://agentmods.dev/skills/carta/plugins/carta-valuation-history"><img src="https://agentmods.dev/badge/skills/carta/plugins/carta-valuation-history/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/carta/plugins/carta-valuation-history"><img src="https://agentmods.dev/badge/skills/carta/plugins/carta-valuation-history.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to high
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 →
- high Prompt Injection · line 21 Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
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 | $0.00063 | $0.02225 |
| Opus 5 | $0.00032 | $0.01112 |
| Sonnet 5 | $0.00013 | $0.00445 |
| Haiku 4.5 | $0.00006 | $0.00222 |
Grade A, and why
carta-valuation-history 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 5d 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.
How it starts
The opening of the file, as written. The whole thing — 201 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Valuation History
Fetch a company's fair market value (FMV) history.
FMV is not always a 409A. A 409A is the US instrument; a UK company is valued under an EMI or CSOP agreement with HMRC, and other companies use a share-price report. Read whichever the company actually has, and never tell a company with a valid EMI valuation that it has none.
When to Use
- "What's our current valuation?" / "What's the current 409A?"
- "Show me the FMV history"
- "When does the valuation expire?"
- "What's the exercise price for common stock?"
- "Has the FMV changed recently?"
- "Is the valuation still valid?"
Prerequisites
You need the corporation_id. Get it from list_accounts if you don't have it.
Data Retrieval
call_tool({"name": "cap_table__get__valuations", "arguments": {"corporation_id": corporation_id}})
Optional valuation_source filters to one or more of EMI, CSOP, 409A, SHARE_PRICE.
Omit it — the point of this command is that it covers every source at once.
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.
- 5d ago Changed · +1 lines 0853a6bfac4b
- 9d ago First seen · 200 lines · 63 tokens per session scan A fee44fb3e6a4
carta-valuation-history is a skill published in the GitHub repository carta/plugins (13 stars, last pushed today), licensed Apache-2.0. It adds 63 tokens to every session and 2,225 once invoked, about $0.0003 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.
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