A/B test agent skills and MCP changes with Caliper SKILL.md skillA

A/B test agent skills and MCP changes with Caliper from agentskillexchange/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add agentskillexchange/skills/A/B test agent skills and MCP changes with Caliper@git:20260921.d48d06f

Pins git:20260921.d48d06f in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
agentskillexchange/skills
Path
skills/ab-test-agent-skills-mcp-changes-with-caliper/SKILL.md
Versions recorded
1
Latest version
git:20260921.d48d06f, committed Sep 21, 2026
Size
1,464 bytes
Repository stars
62
License
MIT

Use Caliper to run real agent tasks with and without a skill, MCP server, or rule change so reliability and token cost are measurable.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# A/B test agent skills and MCP changes with Caliper

Use Caliper to run real agent tasks with and without a skill, MCP server, or rule change so reliability and token cost are measurable.

## Prerequisites

Python 3.10+, Caliper CLI, target agent runtime such as Claude Code, Codex, Pi, or Hermes, skills or MCP servers under test

## Installation

Install or set up from the source-backed instructions:

Install the CLI with `pipx install caliper-eval` for direct runs, or add the agent skill with `npx skills@latest add edonadei/caliper`; then create an `.eval.yaml`, run `caliper run ... --k 3`, run an ablated control with `--ablate`, and compare results with `caliper compare`.

- Source: https://github.com/edonadei/caliper

## Documentation

- https://github.com/edonadei/caliper

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/ab-test-agent-skills-mcp-changes-with-caliper/)

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add agentskillexchange/skills/A/B test agent skills and MCP changes with Caliper@sha256:5981b6a10baec9cd

The line at the top of this page pins the label git:20260921.d48d06f, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_ktd33xgx3vy3ai7p.svg)](https://markdownregistry.com/a/art_ktd33xgx3vy3ai7p)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Sep 21, 2026.

versioncommittedcommitsizeaudit
git:20260921.d48d06f latest2026-09-21 d48d06f 1,464 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (1464 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

agentskillexchange/skills · 62 stars · license MIT · pushed 2026-11-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ktd33xgx3vy3ai7p
GET https://markdownregistry.com/api/v1/resolve?ref=agentskillexchange/skills/A/B test agent skills and MCP changes with Caliper
GET https://markdownregistry.com/api/v1/blob/5981b6a10baec9cd17bd4bc6a73931006ced0ba1166f35b371a41e6bc6c781f9

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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