Ready to supercharge your AI agents?

Install any skill in seconds. Free to start, no credit card required.

Get Started Free →

Tool Discovery Engine · stijnman | DecimalAI

agent toolingby stijnman

Tool Discovery Engine

stijnman/tool-discovery-engine

Source stijnman/grok-custom-skills ↗License MIT

Discovers available tools, MCP servers, and skills for a task.

SkillScore70Maintained

Automatic

AI Engineer pack

Last verified 8/28/2026

What it changes

Passed 14 of 20 test cases with the skill, and 5 of 20 without it.

Without skill26%

With skill70%

Checks it passed that the model alone missed

Scans `.grok/skills/`
Scans MCP tool descriptors
References `control-overview`

and 17 more in the full report

11 fixed5 passed either way6 still failing1 broke

Pass-rate lift: +43 pp
Tokens: -43%
Agent turns: 0%
Response time: -49%

Model gemini-3.6-flashMeasured 8/28/2026v216 of 23 cases passed with skill · 20 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/stijnman-tool-discovery-engine/SKILL.md https://app.decimal.ai/s/stijnman-tool-discovery-engine/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add stijnman-tool-discovery-engine, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/stijnman-tool-discovery-engine/ and pins it in .decimal/skills.lock

decimalai skills add stijnman-tool-discovery-engine

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/stijnman-tool-discovery-engine/SKILL.md https://app.decimal.ai/s/stijnman-tool-discovery-engine/SKILL.md

Raw file: /s/stijnman-tool-discovery-engine/SKILL.md ↗ · machine-readable summary at /s/stijnman-tool-discovery-engine.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 8 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 8

Prompt

When performing capability discovery for image optimization, which two exact storage locations must be scanned?

What was checked, without and with the skill
Checked	Without skill	With skill
Scans MCP tool descriptors	Missed	Passed
Scans `.grok/skills/`	Missed	Passed

case-06 · gemini-3.6-flash · 8/28/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md35 linessingle file

Tool Discovery Engine

When to Use

User says what tools or task matches this capability
User says discover capabilities or task matches this capability
User says find tool for or task matches this capability
User says available skills or task matches this capability

Workflow

Scan MCP tool descriptors and .grok/skills/.
Match task keywords to tools/skills.
Rank by relevance and availability.
Output recommended tool/skill list with paths.

Integrations

adaptive-workflow-composer
control-overview
skill-researcher

Error Handling

Failure	Response
MCP dir missing	List skills only; note MCP unavailable.

Gotchas

Always read tool schema before calling MCP tools.

Example

Input: User request matching triggers above. Output: Structured result per workflow with integrations invoked as needed.

Track record

Benchmark

14 / 20

test cases passed, vs 5 / 20 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v5 — 8/15/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

stijnman / grok-custom-skills

.grok/skills/tool-discovery-engine/SKILL.md

View on GitHub ↗

License MITImported 8/15/2026Version v2

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

stijnman/mcp-tool-scoutDiscovers MCP servers and reads tool schemas before calling MCP tools. Use b efore MCP invocations or when user says what MCP tools, check MCP schema. Re ad-only filesystem inspection of MCP descriptors. Triggers: mcp tools, MCP s chema,discover MCP. Use when the user needs this capability.Close match+23 pp pass-rate lift

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Tool Discovery Engine

When to Use

Workflow

Integrations

Error Handling

Gotchas

Example

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

Related skills