blender-agent-benchmark

blender-agent-benchmark is a skill for Codex from ifBars/blender-agent-studio. It costs 68 tokens per session (1,747 once invoked), scanned A, original, MIT.

A method for comparing Blender agents, skills, prompts, scripts, or MCP tools in isolated test runs. An MCP tool is a program interface that lets an agent use an external capability.

In plain words
What is it for?
Use it for baseline-versus-plugin tests, regression suites, skill testing, MCP usefulness checks, score calibration, and measuring mesh, render, animation, cost, or failure differences.
Why use it?
It helps show whether a change actually improves results by keeping tasks, environments, measurements, and evaluation conditions consistent.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: mentions Codex.

Good fit Use it for baseline-versus-plugin tests, regression suites, skill testing, MCP usefulness checks, score calibration, and measuring mesh, render, animation, cost, or failure differences.

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Install with agentmods
npx agentmods add skills/ifbars/blender-agent-studio/blender-agent-benchmark
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add ifBars/blender-agent-studio --skill blender-agent-benchmark
Clone the repo
git clone --depth 1 https://github.com/ifBars/blender-agent-studio

Made for: Codex.

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 blender-agent-benchmark

README.md
[![agentmods](https://agentmods.dev/badge/skills/ifbars/blender-agent-studio/blender-agent-benchmark.svg)](https://agentmods.dev/skills/ifbars/blender-agent-studio/blender-agent-benchmark)
Your own site
<a href="https://agentmods.dev/skills/ifbars/blender-agent-studio/blender-agent-benchmark"><img src="https://agentmods.dev/badge/skills/ifbars/blender-agent-studio/blender-agent-benchmark.svg" alt="Measured on agentmods" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,747 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 $0.00068 $0.01747
Opus 5 $0.00034 $0.00873
Sonnet 5 $0.00014 $0.00349
Haiku 4.5 $0.00007 $0.00175

Measured today against content hash b136b4a63488, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

blender-agent-benchmark 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 today.

The scan reads SKILL.md. This mod also ships 16 executable files (scripts/benchmark_mcp.ts, scripts/compare_runs.test.ts, scripts/compare_runs.ts, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

plugins/blender-agent-studio/skills/blender-agent-benchmark/SKILL.md · 175 lines

How it starts

The opening of the file, as written. The whole thing — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Blender Agent Benchmark

Read the shared execution guidance once per task for autonomous decisions, evidence cadence, and long-task continuity.

Measure changes with the same tasks, model, effort, limits, Blender build, and evaluator. Preserve natural agent behavior.

Protect benchmark integrity

  1. Create isolated directories for every condition and repetition.
  2. Do not leave the other condition's code, renders, metrics, or expected fixes where the agent can discover them.
  3. Keep the user-facing task prompt identical except for explicit skill invocation in the plugin condition.
  4. Use codex exec --ignore-user-config for the no-plugin baseline.
  5. Use the installed plugin in a fresh invocation for the plugin condition.
  6. Record CLI version, model, effort, Blender build, duration, tool calls, failures, and output hashes.
  7. Evaluate outputs after generation. Do not leak hidden rubric details to the agent.

Read references/methodology.md before changing fixtures, scoring, or comparison claims. Read references/open-source-benchmark-landscape.md when designing new suites or borrowing evaluation ideas from other Blender benchmarks. Read references/validated-results.md only when reviewing the plugin's recorded validation result, not while generating a benchmark submission.

Run the suites

For Astra, pass --profile astra (model gpt-6-astra, effort medium). The sol, terra, and luna profiles select their corresponding GPT-5.6 models at the same effort. Explicit --reasoning overrides effort, not the model. Use an explicit profile or --model for reproducible comparisons; runs using configured default are exploratory because model identity is not pinned.

Separate two experiments: old/revised skills on Astra, then fixed revised skills on Astra/Sol/Terra/Luna. Keep fixture, effective effort, Blender build, limits, permissions, and evaluator fixed. The existing non-regression gate requires matching models; cross-model results are descriptive model comparisons, not proof that a skill revision improved. Never replace historical result labels with Astra or attribute a simultaneous model-and-skill change to either alone.

Read the full file on GitHub · 175 lines

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. today Changed · +16 lines b136b4a63488
  2. 8d ago First seen · 159 lines · 68 tokens per session scan A bc3909ccb51f

Subscribe to this mod's changes

blender-agent-benchmark is a skill published in the GitHub repository ifBars/blender-agent-studio (14 stars, last pushed today), licensed MIT. It adds 68 tokens to every session and 1,747 once invoked, about $0.0003 per session on Opus 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 2026-08-31.

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