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worldlabs-mcp: Skill for Claude Code

.opencode/skills/session-context/SKILL.md

session-context is a skill for Claude Code, OpenCode from sandraschi/worldlabs-mcp. It costs 18 tokens per session (143 once invoked), scanned A, original, MIT.

A session-start instruction for World Labs tools that recalls available worlds and recent generation jobs.

In plain words
What is it for?
Listing recent worlds, checking generation operations, and saving generated-world details for later follow-up.
Why use it?
It helps the agent notice existing worlds or unfinished jobs before starting new work and record results afterward.

Skill for Claude CodeOpenCode

Written for Claude Code and OpenCode: shipped in a Claude Code plugin, but also installed under .opencode/.

This is sandraschi/worldlabs-mcp's own configuration. It tells Claude Code and OpenCode how to work on worldlabs-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything worldlabs-mcp configures →

Part of the worldlabs-mcp plugin — 2 skills shipped together

not rated 24repo today A scan 18 tokens original MIT
View source ↗ sandraschi/worldlabs-mcp
Reuse

Borrowing it

Nothing to install: this file belongs to sandraschi/worldlabs-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/sandraschi/worldlabs-mcp/main/.opencode/skills/session-context/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/sandraschi/worldlabs-mcp

Made for: Claude Code, OpenCode.

Or install worldlabs-mcp, the plugin that ships this one along with the rest of its 2 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for session-context

README.md
[![agentmods](https://agentmods.dev/badge/skills/sandraschi/worldlabs-mcp/session-context/github.svg)](https://agentmods.dev/skills/sandraschi/worldlabs-mcp/session-context)
Your own site
<a href="https://agentmods.dev/skills/sandraschi/worldlabs-mcp/session-context"><img src="https://agentmods.dev/badge/skills/sandraschi/worldlabs-mcp/session-context/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for session-context

Your own site · 80×15
<a href="https://agentmods.dev/skills/sandraschi/worldlabs-mcp/session-context"><img src="https://agentmods.dev/badge/skills/sandraschi/worldlabs-mcp/session-context.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 143 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00018 $0.00143
Opus 5.5 $0.00007 $0.00057
Sonnet 5.5 $0.00004 $0.00029
Haiku 4.5 $0.00002 $0.00014

Measured 2mo ago against content hash b61373315200, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

session-context scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.opencode/skills/session-context/SKILL.md · 19 lines

What it actually says

Session Context (World Labs MCP)

You have access to World Labs generative world tools: text/image/video-to-world generation, operation polling, world library, sparks, painting portals, and Plex cinema integration.

Before starting work:

  1. Check the world library: list_worlds(limit=10)
  2. Poll recent generations: get_operation(operation_id="<latest>") - confirm jobs are not stuck

At end of work:

  • Store any generated world metadata back to the library
  • Note generation failures with their operation IDs for follow-up
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 19 lines · 18 tokens per session scan A b61373315200

Subscribe to this mod's changes

session-context is a skill published in the GitHub repository sandraschi/worldlabs-mcp (24 stars, last pushed today), licensed MIT. It adds 18 tokens to every session and 143 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Building agentsmarblemcp-serverwebappworldlabs
Related

session-context compared with skills from other repositories

session-context next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
session-contextsandraschi/worldlabs-mcpSkill24todayMITA18Claude Code, OpenCode
blender-expertsandraschi/blender-mcpSkill658d agoMITA34Claude Code
autonomous-modelingsandraschi/blender-mcpSkill658d agoMITA36Claude Code
pipeline-automationsandraschi/blender-mcpSkill658d agoMITA29Claude Code
freecad-expertsandraschi/freecad-mcpSkill337d agoMITA0Claude Code
virtualization-expertsandraschi/virtualization-mcpSkill19todayMITA24Claude Code
qcad-cadsandraschi/qcad-mcpSkill18todayMITA41Claude Code