ground

Verifies doubted claims in recent AI output against local and external sources.

4|Updated Jun 9, 2026
One-click install
npx skills add https://github.com/laicluse/agent-fieldkit --skill ground-laicluse
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: ground
Source: https://github.com/laicluse/agent-fieldkit/tree/main/.agents/plugins/generated/lifeline/skills/ground
Command: npx skills add https://github.com/laicluse/agent-fieldkit --skill ground-laicluse

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? When a user doubts the accuracy of an AI assistant's recent output, the assistant tends to defend, rephrase, or rationalize instead of checking facts. This Skill forces a structured verification workflow so claims are checked against real sources rather than the same model weights that produced them. ## Core Features & Use Cases - Claim identification and prioritization: Re-reads recent output, extracts verifiable claims, and verifies at most 3 per invocation, starting with the claim closest to the user's doubt. - Two-stage source search: Searches local sources first (codebase, configuration, tests, docs, runtime commands), then external sources (official documentation, Stack Overflow, GitHub issues, blog posts) when local evidence is insufficient. - Honest synthesis: Reports results as wrong, nuanced, or confirmed with sources, without hedging or rewriting history. - Proactive trigger: Fires before asserting that a design is technically necessary, grounding the justification before complexity gets locked in. - Use Case: A user replies "dat klopt niet" to a claim about when Hash#dig was introduced in Ruby. The Skill identifies the claim, checks the local Gemfile.lock and the official Ruby changelog, and concedes with the correct version and source link. ## Quick Start Type /ground or tell the assistant that its last answer seems wrong, and it will verify the disputed claims against local and external sources.

Frequently Asked Questions about ground

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I verify an AI assistant's claim when I think it is wrong?▼

Express doubt or type /ground, and the Skill re-reads the recent output, formulates a sharp verification question per claim, then checks local sources and external documentation. It reports whether the claim was wrong, nuanced, or confirmed with sources.

How does ground verify claims without using the model's own knowledge?▼

Ground treats the model's training data as the suspect, not the witness. It requires evidence from tools: Grep and Read for code, Bash for runtime checks, and WebFetch or WebSearch for official docs, Stack Overflow, and GitHub issues.

How many claims can be verified in one /ground invocation?▼

At most 3 claims per invocation. When output contains more verifiable claims, the Skill prioritizes the one closest to the user's doubt and reports which claims were verified and which remain open.

Does ground only run after the user challenges an answer?▼

No. It also fires proactively before the assistant asserts that a design is technically necessary, such as claiming something needs its own route, layer, or abstraction. The justification is verified the same way as any factual claim.

What happens when a claim cannot be verified with available tools?▼

The Skill states honestly that verification is impossible with the available sources and that the claim was based on training data that cannot be confirmed as current. It prohibits pretending or hedging when evidence is exhausted.