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Agent Evaluation & Observability

Skillspec

Skillspec is a Rust-based command-line developer tool for evaluating agent skills, creating structured contracts from them, and inspecting records of whether agents followed those contracts.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Skillspec — OpenViST project profile in Agent Evaluation & Observability.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use Skillspec when reviewing agent-skill instructions or adding structured requirements and inspectable follow-through records to a skill workflow.

Who it is for

  • Developers who write or maintain agent skills.
  • Teams that want to review skill risks and make instructions, required checks, and expected proof more explicit.

Documented uses

  • Generate a risk report for a skill before relying on it.
  • Turn skill instructions into a contract describing routes, prohibitions, dependencies, checks, and proof.
  • Inspect a record to assess whether an agent followed a skill.
  • Use guided imports to bring skills into a project.
Before you choose

Requirements & limits

The project is open source under the Apache-2.0 license. The README documents a CLI installer, Cargo installation, and a hosted-page trial for public skill URLs.

  • Skillspec works at the skill layer and does not require a new agent runtime or orchestration platform.
  • A structured contract uses a skill.spec.yml alongside the skill's SKILL.md.
  • The documented Doctor report surfaces potential issues; an inspected alignment record is a separate follow-through mechanism.
  • The README documents plugin installation paths for Claude Code and Codex.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Review a skill with Doctor

Generate a risk report for a local skill or public GitHub skill URL.

Before you start

  • Skillspec CLI installed, or access to the hosted page for a public skill URL.
  • A skill path, local folder, or public GitHub URL.

Steps

  1. For a local skill, run skillspec doctor ./my-skill with the path replaced by the skill to review.

  2. For a public skill URL, paste it into the hosted page at https://skillspec.sh/.

Expected outcome

A Doctor risk report identifies potential follow-through issues in the skill.

Guide limitations

  • The documented example reports risks; it does not establish that an agent execution has been tested.
  • The hosted-page trial is documented for public skill URLs.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
13 October 2026
Original website title
modiqo/skillspec · Official homepage title · retained in its source language
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