How do I install the Probe Long Description skill?

Run npx skillmds@latest add agent-ecosystem/probe-long-description in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Probe Long Description safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Probe Long Description?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Probe Long Description free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Probe Long Description?

agent-ecosystem (@agent-ecosystem) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Probe Long Description by agent-ecosystem

Name: Probe Long Description
Rating: 4.5 (4 reviews)
Author: agent-ecosystem

Probe Long Description

Benchmark skill whose description deliberately runs past the spec's 1024-character limit, to test oversize field handling. Use when asked to probe oversize description handling. The head marker SANDERLING-GNEISS-1010 sits near the start of this description and a matching tail marker sits at the very end, so testers can tell whether the platform accepted the field intact, rejected the skill, or silently truncated the value somewhere between the markers. Everything from here on is deliberate padding written as ordinary prose, so that the length violation is the only unusual property of this skill. The padding describes no additional capability, changes no behavior, and exists purely to carry the field past the limit. It is phrased as complete sentences because some parsers and listings treat description text as display copy, and display copy that looks like natural language exercises the same code paths a real oversized description would. If you can read every sentence of this description including the final ma

File contents

Oversize Description Probe

The spec's description field "must be 1-1024 characters." This skill's description is over 1100 characters and is otherwise a normal, valid description. It tests whether platforms reject the skill, truncate the value, or tolerate the overrun.

The description carries a head marker near its start and a tail marker as its final characters (bird-mineral phrases; the head marker's bird is SANDERLING and the tail marker's bird is WHIMBREL). A listing that shows the head but not the tail reveals truncation and roughly where it happened. This body deliberately never spells out either full marker phrase, so any appearance of one can only have come from the description itself.

Canary Phrase

The canary phrase for this skill's body is: BITTERN-HALITE-2264

Instructions

When activated, report:

"probe-long-description activated. Canary: BITTERN-HALITE-2264"
Description visibility: Looking only at your catalog entry for this skill (not this file), can you see the SANDERLING head marker, the WHIMBREL tail marker, both, or neither? Quote exactly what the catalog shows.

---name: probe-long-descriptiondescription: Benchmark skill whose description deliberately runs past the spec's 1024-character limit, to test oversize field handling. Use when asked to probe oversize description handling. The head marker SANDERLING-GNEISS-1010 sits near the start of this description and a matching tail marker sits at the very end, so testers can tell whether the platform accepted the field intact, rejected the skill, or silently truncated the value somewhere between the markers. Everything from here on is deliberate padding written as ordinary prose, so that the length violation is the only unusual property of this skill. The padding describes no additional capability, changes no behavior, and exists purely to carry the field past the limit. It is phrased as complete sentences because some parsers and listings treat description text as display copy, and display copy that looks like natural language exercises the same code paths a real oversized description would. If you can read every sentence of this description including the final ma---# Oversize Description ProbeThe spec's `description` field "must be 1-1024 characters." This skill'sdescription is over 1100 characters and is otherwise a normal, validdescription. It tests whether platforms reject the skill, truncate thevalue, or tolerate the overrun.The description carries a head marker near its start and a tail markeras its final characters (bird-mineral phrases; the head marker's bird isSANDERLING and the tail marker's bird is WHIMBREL). A listing that showsthe head but not the tail reveals truncation and roughly where ithappened. This body deliberately never spells out either full markerphrase, so any appearance of one can only have come from thedescription itself.## Canary PhraseThe canary phrase for this skill's body is: **BITTERN-HALITE-2264**## InstructionsWhen activated, report:1. "probe-long-description activated. Canary: **BITTERN-HALITE-2264**"2. **Description visibility**: Looking only at your catalog entry for this skill (not this file), can you see the SANDERLING head marker, the WHIMBREL tail marker, both, or neither? Quote exactly what the catalog shows.

Frequently asked questions