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Agent skill

Observal Registry

by Observal in Observal/Observal

Searches, recommends, bulk-submits, installs, edits, versions, archives, restores, transfers, and manages co-authors for Observal MCP servers, skills, hooks, prompts, sandboxes, and registered…

Apache-2.0Auto-check passedAgent Workflows

Install Observal Registry

skills CLI
$ npx skills add Observal/Observal --skill observal-registry -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install Observal/Observal observal-registry --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/Observal/Observal.git skills-src && mkdir -p .claude/skills && cp -r skills-src/observal_cli/skills/observal-registry .claude/skills/observal-registry && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
observal-registry
GitHub stars
4.3k
Token cost
~907 tokens
SKILL.md length
378 words
Files
4 (incl. references)
Skills in repo
7
Repo updated
First seen
Licence
Apache-2.0

At a glance

Searches, recommends, bulk-submits, installs, edits, versions, archives, restores, transfers, and manages co-authors for Observal MCP servers, skills, hooks, prompts, sandboxes, and registered…

  • Works in 10 steps: Execute commands with a 60 second timeout. → Use machine output by default: add… → Run the leaf command's --help when any… → …
  • The user wants to find components
  • SKILL.md covers Execution contract, Choose the workflow, Registry rules and Completion
  • Reaches public.observal.io

What it does

Observal Registry is an agent skill from Observal/Observal. Searches, recommends, bulk-submits, installs, edits, versions, archives, restores, transfers, and manages co-authors for Observal MCP servers, skills, hooks, prompts, sandboxes, and registered remote A2A agents. Use when the user wants to find components, publish one or many they control, install them into a harness, or manage their lifecycle.

Its SKILL.md is about 910 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `references/component-submission.md`, `references/discovery-and-installation.md` and `references/registry-lifecycle.md`).

It sits in Agent Workflows, covering MCP servers. It works with Model Context Protocol. The repository describes itself as: Observal is self-hosted registry for your coding agent extensions with a built in insight engine. Setup Observal, define the scope and share your Skills, MCPs and Agents with… The licence is Apache-2.0.

When your agent uses it

  • The user wants to find components
  • Many they control
  • Install them into a harness
  • Manage their lifecycle

Example prompts

  • “/observal-registry”

Workflow steps

10 steps, taken from the first numbered list in SKILL.md.

  1. Execute commands with a 60 second timeout.
  2. Use machine output by default: add --output json whenever supported. Parse list results from items and pagination fields.
  3. Run the leaf command's --help when any path, flag, enum, or payload shape is uncertain.
  4. Supply all required inputs and confirmation flags. Do not leave an agent waiting at a prompt.
  5. Reuse returned UUIDs and qualified_name values. Never automate with row numbers or ambiguous bare names.
  6. Verify installs, submissions, edits, versions, ownership changes, and lifecycle transitions.
  7. Submit or modify only components the user owns or is authorized to manage.
  8. Never expose environment values, headers, tokens, private source data, or submitted secret fields.
  9. Mutations are sent once. After an uncertain transport failure, read component state before retrying.
  10. Authentication is optional for approved public content when the server setting deployment.public_registry_enabled is enabled; it is…

What it can do on your machine

Read from SKILL.md and the folder at commit 3bc173c. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • public.observal.io

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Observal Registry loads about 907 tokens when it runs, and up to ~4.6k if it reads all its reference files. Until then it costs about 91 tokens; SKILL.md has 378 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~91
When it runs · the whole SKILL.md, loaded when a task matches
~907
With references · SKILL.md plus every file in references/, read only if the agent opens them
~4.6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Observal/Observal at commit 3bc173c, republished under its Apache-2.0 licence (© Observal). 378 words, ~907 tokens.

Download SKILL.mdSave it as .claude/skills/observal-registry/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
observal-registry
description
Searches, recommends, bulk-submits, installs, edits, versions, archives, restores, transfers, and manages co-authors for Observal MCP servers, skills, hooks, prompts, sandboxes, and registered remote A2A agents. Use when the user wants to find components, publish one or many they control, install them into a harness, or manage their lifecycle.
<!-- SPDX-FileCopyrightText
2026 Lokesh <lokeshselvam7025@gmail.com> -->
command
observal
version
2.5.0
owner
observal

Managing Registry Components

Execution contract

  1. Execute commands with a 60 second timeout.
  2. Use machine output by default: add --output json whenever supported. Parse list results from items and pagination fields.
  3. Run the leaf command's --help when any path, flag, enum, or payload shape is uncertain.
  4. Supply all required inputs and confirmation flags. Do not leave an agent waiting at a prompt.
  5. Reuse returned UUIDs and qualified_name values. Never automate with row numbers or ambiguous bare names.
  6. Verify installs, submissions, edits, versions, ownership changes, and lifecycle transitions.
  7. Submit or modify only components the user owns or is authorized to manage.
  8. Never expose environment values, headers, tokens, private source data, or submitted secret fields.
  9. Mutations are sent once. After an uncertain transport failure, read component state before retrying.
  10. Authentication is optional for approved public content when the server setting deployment.public_registry_enabled is enabled; it is disabled by default on self-hosted deployments. Public list, show, install, and prompt render commands use https://public.observal.io by default. Authenticate before submitting, editing, reviewing, rating, or accessing private team content.

Choose the workflow

User intentRead
Find, inspect, recommend, or install componentsDiscovery and installation
Submit one component or a mixed bulk file, or register a remote A2A agentComponent submission
Edit, version, archive, restore, transfer, or manage co-authorsRegistry lifecycle

Read only the selected reference, and read it completely before executing.

Show full SKILL.md (145 more words)Show less

Registry rules

  • Search with the user's natural-language terms, then narrow by type, namespace, team, harness, or category only when useful.
  • Open-ended requests such as "what am I missing?" use personalized recommendations before keyword search.
  • personalized: false means popularity fallback, not a personal recommendation.
  • Team members can see authorized private teamspace items. Use TEAM_HANDLE/ITEM_SLUG for direct references.
  • Draft, pending, rejected, and approved items have different edit behavior. Read status before mutating.
  • A successful submit can still be pending review. Report the returned status instead of saying it is published.
  • Bulk files are structurally validated before mutation. Inspect every per-entry result and verify uncertain retries by canonical identity.
  • Prefer an existing installed dependency or native CLI path. Do not invent wrappers or telemetry variables.

Completion

Report component type, canonical identity, version, status, target harness or scope when applicable, warnings, and any review or setup step still required.

© Observal, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files (references) in observal_cli/skills/observal-registry of Observal/Observal.

  • SKILL.md
  • references/component-submission.md
  • references/discovery-and-installation.md
  • references/registry-lifecycle.md

Open the folder on GitHubat commit 3bc173c

Compare with similar skills

Observal Registry next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Observal Registry compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Observal Registry this skillObserval/Observal4.3k—~907Automated safety check: PassApache-2.0
MCP Server Builderanthropics/skills180k63 repos~2.3kAutomated safety check: PassApache-2.0
MCP Server BuildershareAI-lab/learn-claude-code78k4 repos~1.2kAutomated safety check: PassMIT
MCP Integration for Pluginsanthropics/claude-plugins-official38k11 repos~3.1kAutomated safety check: PassApache-2.0
Crush Configurationcharmbracelet/crush29k—~3.7kAutomated safety check: PassCustom licence
Context Mode Output Sandboxmksglu/context-mode26k—~4.1kAutomated safety check: PassCustom licence

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Works with

Categories

Questions about Observal Registry

What does Observal Registry do?

Searches, recommends, bulk-submits, installs, edits, versions, archives, restores, transfers, and manages co-authors for Observal MCP servers, skills, hooks, prompts, sandboxes, and registered…. Observal Registry is an agent skill from Observal/Observal. Searches, recommends, bulk-submits, installs, edits, versions, archives, restores, transfers, and manages co-authors for Observal MCP servers, skills, hooks, prompts, sandboxes, and registered remote A2A agents.

When should I use Observal Registry?

Observal Registry fits situations like: the user wants to find components; many they control; install them into a harness; manage their lifecycle.

How do I install Observal Registry in Claude Code?

Run `npx skills add Observal/Observal --skill observal-registry -a claude-code`. Or copy the skill folder (observal_cli/skills/observal-registry in Observal/Observal) into .claude/skills/observal-registry in your project. Claude Code loads it when a task matches its description.

How do I install Observal Registry in Codex?

Run `npx skills add Observal/Observal --skill observal-registry -a codex`. Or copy the skill folder (observal_cli/skills/observal-registry in Observal/Observal) into .agents/skills/observal-registry in your project. Codex loads it when a task matches its description.

Can I use Observal Registry in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Observal/Observal --skill observal-registry -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/observal-registry, .gemini/skills/observal-registry, .github/skills/observal-registry and .opencode/skills/observal-registry in your project.

What does Observal Registry need to run?

SKILL.md names no scripts, command-line tools or credentials: Observal Registry is instructions for the agent only.

Does Observal Registry access the network?

SKILL.md names 1 domain. In commands or code: public.observal.io; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Observal Registry safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Observal Registry use?

Observal Registry is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Observal Registry use?

About 907 tokens (SKILL.md is roughly 3.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3.7k tokens, read only when the agent opens those files.

What are the alternatives to Observal Registry?

Skills that share tags, products or a category with Observal Registry: MCP Server Builder (anthropics/skills, 180k stars), MCP Server Builder (shareAI-lab/learn-claude-code, 78k stars), MCP Integration for Plugins (anthropics/claude-plugins-official, 38k stars) and Crush Configuration (charmbracelet/crush, 29k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Observal Registry?

Observal (a GitHub organization) maintains it in Observal/Observal, which has 4,300 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on October 10, 2026.

Source: Observal/Observal on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.