Agent skill

Analyze Eval

by get-convex in get-convex/convex-evals

Investigate a single failing eval from the convex-evals system.

Apache-2.0Auto-check passedAI & LLM Engineering

Install Analyze Eval

skills CLI
$ npx skills add get-convex/convex-evals --skill analyze-eval -a claude-code

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

GitHub CLI
$ gh skill install get-convex/convex-evals analyze-eval --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/get-convex/convex-evals.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.cursor/skills/analyze-eval .claude/skills/analyze-eval && 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
analyze-eval
GitHub stars
129
Token cost
~1.1k tokens
SKILL.md length
512 words
Files
1
Skills in repo
5
Repo updated
First seen
Licence
Apache-2.0

At a glance

Investigate a single failing eval from the convex-evals system.

  • Works in 4 steps: Extract the eval ID from the URL → Fetch the eval → Analyze the failure → …
  • The user shares a visualizer URL pointing to a specific eval
  • SKILL.md covers When to use, Step 1: Extract the eval ID…, Step 2: Fetch the eval and Step 3: Analyze the failure, plus 1 more section
  • Calls curl, jq and npx; reaches convex-evals.netlify.app and fabulous-panther-525.convex.cloud

What it does

Analyze Eval is an agent skill from get-convex/convex-evals. Investigate a single failing eval from the convex-evals system. Use when the user shares a visualizer URL pointing to a specific eval, asks about a specific failing eval, or references a specific eval ID.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in AI & LLM Engineering, covering LLM evaluation. The licence is Apache-2.0.

When your agent uses it

  • The user shares a visualizer URL pointing to a specific eval
  • Asks about a specific failing eval
  • References a specific eval ID

Example prompts

  • “/analyze-eval”

Requirements

  • Node.js

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. Extract the eval ID from the URL
  2. Fetch the eval
  3. Analyze the failure
  4. Classify and report findings

What it can do on your machine

Read from SKILL.md and the folder at commit 68f5c0e. 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

    Shell commands in SKILL.md call:

    • curl
    • jq
    • npx

    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:

    • convex-evals.netlify.app
    • fabulous-panther-525.convex.cloud

    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

Analyze Eval loads about 1.1k tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 512 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~54
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k

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 get-convex/convex-evals at commit 68f5c0e, republished under its Apache-2.0 licence (© get-convex). 512 words, ~1,113 tokens.

Download SKILL.mdSave it as .claude/skills/analyze-eval/SKILL.md (or your agent's skills folder).
name
analyze-eval
description
Investigate a single failing eval from the convex-evals system. Use when the user shares a visualizer URL pointing to a specific eval, asks about a specific failing eval, or references a specific eval ID.

Analyze Eval

When to use

  • User shares a URL like https://convex-evals.netlify.app/experiment/.../run/$runId/$category/$evalId
  • User asks "why did this eval fail?" or "what went wrong with this eval?"
  • User references a specific eval ID

Step 1: Extract the eval ID from the URL

The visualizer URL pattern is:

/experiment/$experimentId/run/$runId/$category/$evalId?tab=steps
  • $runId — the Convex document ID for the run (e.g. jn7922j1w29pdxm76bj9ps0enx80mg9e)
  • $evalId — the Convex document ID for the specific eval (e.g. jh73jvjz2n00gfeve1dt5h963s80mbc6)

You need the runId and the evalId to query.

Step 2: Fetch the eval

The debug action debug:getEvalDebugInfo is internal, so it needs npx convex run --prod, and agents usually hit team SSO ("Single-sign on login is required"). Use the public production queries over HTTP instead. They need no login. Work in a temp directory:

bash
URL=https://fabulous-panther-525.convex.cloud
curl -s $URL/api/query -H 'Content-Type: application/json' \
  -d '{"path":"runs:getRunDetails","args":{"runId":"<runId>"}}' > run.json
jq '.value | {model, provider, experiment, status: .status.kind}' run.json
jq '.value.evals[] | select(._id == "<evalId>")' run.json > eval.json

Get a download URL for the model output (status.outputStorageId in eval.json) and for the eval source (evalSourceStorageId):

bash
curl -s $URL/api/query -H 'Content-Type: application/json' \
  -d '{"path":"runs:getOutputUrl","args":{"storageId":"<storageId>"}}' | jq -r .value

Download each with curl -s -o, then unzip the output into output/ and the source into source/. That gives you:

SourceContents
eval.jsonevalPath, category, name, status (pass/fail + failure reason), task text
eval.json stepsArray of step results: filesystem, install, deploy, tsc, eslint, tests. Each is passed, failed or skipped, with a failure reason
run metadataModel slug, provider, experiment (null means default), run status
output/The model's generated files
source/The eval source (answer dir, grader, TASK.txt, etc.)

If you have an eval ID but no run ID, ask for the visualizer URL, or give Mike this command to run and paste back:

bash
cd evalScores && npx convex run --prod debug:getEvalDebugInfo '{"evalId": "<evalId>"}'
Show full SKILL.md (270 more words)Show less

Step 3: Analyze the failure

With the data returned, compare:

  1. Which step failed? Check steps for the first entry with status.kind === "failed". The failureReason field has the error message.
  2. What did the model generate? Look at output/ for the model's code.
  3. What was expected? Look at source/ for the answer directory and grader test files.
  4. What was the task? Check task in eval.json for the TASK.txt content.

Common failure patterns:

  • eslint fail. Check the failure reason for the specific lint rule violated. Compare the model output against the answer to spot the lint issue.
  • tsc fail. TypeScript compilation error. Check the failure reason for the specific type error.
  • convex dev fail. Schema or function definition issues that prevent Convex from deploying.
  • tests fail. The grader tests didn't pass. Compare output/ against source/ (look for files like grader.test.ts or answer/) to understand what the tests expected.

Step 4: Classify and report findings

Classify the failure as one of:

  • MODEL_FAULT: The model genuinely got it wrong
  • OVERLY_STRICT: The eval/lint/test requirements are unreasonable for what was asked
  • AMBIGUOUS_TASK: The task description is unclear and the model's interpretation was reasonable
  • KNOWN_GAP: A known limitation of this eval that affects all models (e.g. the Convex API returns fields the model can't predict without being told)

Summarize:

  1. The eval name, model, and experiment
  2. Which step failed and the exact error
  3. The classification and reasoning
  4. The relevant code from the model output that caused the failure
  5. What the correct code should look like (from the answer/eval source)
  6. Whether any action is recommended (config change, task clarification, etc.)

© get-convex, 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

Just SKILL.md in .cursor/skills/analyze-eval of get-convex/convex-evals.

Open the folder on GitHubat commit 68f5c0e

Compare with similar skills

Analyze Eval 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.

Analyze Eval compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Analyze Eval this skillget-convex/convex-evals129—~1.1kAutomated safety check: PassApache-2.0
LLM Benchmarking with lm-evaluation-harnessOrchestra-Research/AI-Research-SKILLs13k8 repos~3kAutomated safety check: PassMIT
Azure AI Projects Python SDKmicrosoft/skills3.1k6 repos~2.8kAutomated safety check: PassMIT
Fine-Tuning ExpertJeffallan/claude-skills12k1 repos~1.7kAutomated safety check: PassMIT
Looperksimback/looper710—~2.7kAutomated safety check: NotesMIT
Hugging Face Local Model Evalshuggingface/skills11k2 repos~1.6kAutomated safety check: PassApache-2.0

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Questions about Analyze Eval

What does Analyze Eval do?

Investigate a single failing eval from the convex-evals system. Analyze Eval is an agent skill from get-convex/convex-evals. Investigate a single failing eval from the convex-evals system.

When should I use Analyze Eval?

Analyze Eval fits situations like: the user shares a visualizer URL pointing to a specific eval; asks about a specific failing eval; references a specific eval ID.

How do I install Analyze Eval in Claude Code?

Run `npx skills add get-convex/convex-evals --skill analyze-eval -a claude-code`. Or copy the skill folder (.cursor/skills/analyze-eval in get-convex/convex-evals) into .claude/skills/analyze-eval in your project. Claude Code loads it when a task matches its description.

How do I install Analyze Eval in Codex?

Run `npx skills add get-convex/convex-evals --skill analyze-eval -a codex`. Or copy the skill folder (.cursor/skills/analyze-eval in get-convex/convex-evals) into .agents/skills/analyze-eval in your project. Codex loads it when a task matches its description.

Can I use Analyze Eval 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 get-convex/convex-evals --skill analyze-eval -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/analyze-eval, .gemini/skills/analyze-eval, .github/skills/analyze-eval and .opencode/skills/analyze-eval in your project.

What does Analyze Eval need to run?

Going by SKILL.md and its folder, Analyze Eval needs the command-line tools its instructions call (curl, jq and npx). Our summary lists: Node.js.

Does Analyze Eval access the network?

SKILL.md names 2 domains. In commands or code: convex-evals.netlify.app and fabulous-panther-525.convex.cloud; the agent is likely to contact these when it follows the instructions. This is read from the text; nothing was executed.

Is Analyze Eval 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 Analyze Eval use?

Analyze Eval 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 Analyze Eval use?

About 1.1k tokens (SKILL.md is roughly 4.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Analyze Eval?

Skills that share tags, products or a category with Analyze Eval: LLM Benchmarking with lm-evaluation-harness (Orchestra-Research/AI-Research-SKILLs, 13k stars), Azure AI Projects Python SDK (microsoft/skills, 3.1k stars), Fine-Tuning Expert (Jeffallan/claude-skills, 12k stars) and Looper (ksimback/looper, 710 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Analyze Eval?

get-convex (a GitHub organization) maintains it in get-convex/convex-evals, which has 129 GitHub stars. The repository holds 5 skills in this directory. The repository was last updated on October 8, 2026.

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