fto-triage

fto-triage is a skill for Claude Code from anthropics/claude-for-legal. It costs 81 tokens per session (6,024 once invoked), scanned A, original, Apache-2.0.

A preliminary freedom-to-operate review for patents that might block a product, process, or feature. Freedom to operate asks whether commercial activity may risk patent infringement; this tool is not a formal legal opinion.

In plain words
What is it for?
Use it to gather product and jurisdiction details, search supplied or available patents, and compare likely patents with product features in a first-pass claim chart.
Why use it?
It gives an early, structured view of plausible blocking patents without treating an initial search or claim comparison as proof that a product is clear.

Skill for Claude Code ✓ vendor

Written for Claude Code: argument-hint in frontmatter. Also seen: reads .claude/ paths; mentions CLAUDE.md.

Part of the ip-legal plugin — 9 skills, 1 agent shipped together

Good fit Use it to gather product and jurisdiction details, search supplied or available patents, and compare likely patents with product features in a first-pass claim chart.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/anthropics/claude-for-legal/fto-triage
About the project

Claude for Legal is a collection of AI agents, skills, and data connectors for legal work such as commercial, privacy, employment, litigation, regulatory, and intellectual-property matters. Lawyers and legal teams use it through Claude Cowork, Claude Code, or the Claude Managed Agents API, with attorney review required for every output. The catalogue entries are its workflow plugins, skills, agents, and connectors.

anthropics/claude-for-legal · 9,544 stars · on GitHub

Install

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.

Any agent
npx skills add anthropics/claude-for-legal --skill fto-triage
Clone the repo
git clone --depth 1 https://github.com/anthropics/claude-for-legal

Made for: Claude Code.

Or install ip-legal, the plugin that ships this one along with the rest of its 9 skills, 1 agent.

Wrote 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.

agentmods badge for fto-triage

README.md
[![agentmods](https://agentmods.dev/badge/skills/anthropics/claude-for-legal/fto-triage/github.svg)](https://agentmods.dev/skills/anthropics/claude-for-legal/fto-triage)
Your own site
<a href="https://agentmods.dev/skills/anthropics/claude-for-legal/fto-triage"><img src="https://agentmods.dev/badge/skills/anthropics/claude-for-legal/fto-triage/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.

agentmods 80×15 button for fto-triage

Your own site · 80×15
<a href="https://agentmods.dev/skills/anthropics/claude-for-legal/fto-triage"><img src="https://agentmods.dev/badge/skills/anthropics/claude-for-legal/fto-triage.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,024 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Socket pass 16 Sept 2026
  • Snyk warn 16 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00081 $0.06024
Opus 5.5 $0.00032 $0.02410
Sonnet 5 $0.00016 $0.01205
Haiku 4.5 $0.00008 $0.00602

Measured 6d ago against content hash 3d13699dfe42, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-28, from the pricing page.

Security

Grade A, and why

fto-triage 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 6d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

ip-legal/skills/fto-triage/SKILL.md · 538 lines

How it starts

The opening of the file, as written. The whole thing — 538 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/fto-triage

This is not a freedom-to-operate opinion. A formal FTO opinion requires a comprehensive search, full claim construction, and element-by-element infringement analysis by registered patent counsel. Patent infringement is strict liability; willful infringement triples damages. A "no obvious blocking patents" result from this skill means the triage didn't find one — it does not mean the product is clear.

Instructions

  1. Read ~/.claude/plugins/config/claude-for-legal/ip-legal/CLAUDE.md. If it contains [PLACEHOLDER], stop and direct to /ip-legal:cold-start-interview.
  2. Follow the workflow below.
  3. Run intake (product/process, technical detail, jurisdictions, known patents, timing).
  4. Run a preliminary patent search if a connector is available (Solve Intelligence Patents, or other patent-research MCP). Otherwise say so in the output and proceed with the patents the user has supplied.
  5. For the 2–5 most plausible patents, build a claim-chart first pass against each independent claim — element by element. Literal read first; flag doctrine-of-equivalents separately; flag indirect / divided infringement.
  6. List open questions a real FTO study would resolve (enforceability, prosecution history, IPR outcomes, license availability, enforcement history of the assignee).
  7. Write the triage memo to the matter folder or practice outputs folder. Apply the work-product header per role.
  8. End with recommended next steps, a willfulness note (knowledge of specific patents factors into willfulness if the company proceeds without further counsel review), and the non-lawyer gate if the role is non-lawyer.

This skill never concludes that a product is clear to launch. If uncertain, flag — patent counsel decides.

Examples

/ip-legal:fto-triage "an on-device speech recognition model for consumer wearables, US launch first"
/ip-legal:fto-triage

THIS IS NOT A FREEDOM-TO-OPERATE OPINION

The loudest guardrail in the plugin. Say this at the top of every output. Do not drop it. Do not soften it. Do not let the reader skim past it.

Read the full file on GitHub · 538 lines

Changes

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.

  1. 6d ago First seen · 538 lines · 81 tokens per session scan A 3d13699dfe42

Subscribe to this mod's changes

fto-triage is a skill published in the GitHub repository anthropics/claude-for-legal (9,544 stars, last pushed 4d ago), licensed Apache-2.0. It adds 81 tokens to every session and 6,024 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-09-23.

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