detect

detect is a skill for Claude Code, Codex from synaptiai/agent-capability-standard. It costs 34 tokens per session (1,602 once invoked), scanned A, original, Apache-2.0.

A tool that checks data for a specified pattern, entity, or condition and reports whether it is present. It includes supporting evidence and an assessment of how reliable the detection is.

In plain words
What is it for?
Use it to scan files, URLs, or structured data for patterns, entities, or conditions, optionally limiting the search to areas such as functions, imports, or comments.
Why use it?
It turns a vague search into a clear present-or-absent decision. It also helps account for false positives and weak evidence.

Skill for Claude CodeCodex

Part of the agent-capability-standard plugin — 42 skills, 2 hooks shipped together

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.

agentmods
npx agentmods add skills/synaptiai/agent-capability-standard/detect
Any agent
npx skills add synaptiai/agent-capability-standard --skill detect
Clone the repo
git clone --depth 1 https://github.com/synaptiai/agent-capability-standard

Made for: Claude Code, Codex.

Or install agent-capability-standard, the plugin that ships this one along with the rest of its 42 skills, 2 hooks.

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 detect

README.md
[![agentmods](https://agentmods.dev/badge/skills/synaptiai/agent-capability-standard/detect.svg)](https://agentmods.dev/skills/synaptiai/agent-capability-standard/detect)
Your own site
<a href="https://agentmods.dev/skills/synaptiai/agent-capability-standard/detect"><img src="https://agentmods.dev/badge/skills/synaptiai/agent-capability-standard/detect.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,602 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00034 $0.01602
Opus 5 $0.00017 $0.00801
Sonnet 5 $0.00007 $0.00320
Haiku 4.5 $0.00003 $0.00160

Measured 3d ago against content hash 79e9ee741307, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

detect 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 3d 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.

skills/detect/SKILL.md · 198 lines

How it starts

The opening of the file, as written. The whole thing — 198 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Intent

Scan data sources to determine whether a specified pattern, entity, or condition is present. Detection is binary (present/absent) with associated signal strength.

Success criteria:

  • Clear boolean determination of presence/absence
  • At least one evidence anchor for positive detections
  • False positive risk assessment provided
  • Confidence score justified by evidence quality

Compatible schemas:

  • schemas/output_schema.yaml

Inputs

Parameter Required Type Description
target Yes string|object The data source to scan (file path, URL, or structured data)
pattern Yes string|regex The pattern, entity type, or condition to detect
threshold No object Detection sensitivity settings (e.g., min_matches, confidence_floor)
scope No string Limit search to specific regions (e.g., "functions", "imports", "comments")

Procedure

  1. Define detection criteria: Clarify exactly what constitutes a positive detection

    • Convert vague patterns to concrete search terms or regex
    • Establish minimum evidence threshold for positive detection
  2. Scan target systematically: Search the target data for matching signals

    • Use Grep for text patterns with appropriate flags (-i for case-insensitive, etc.)
    • Use Read for structural inspection when pattern requires context
    • Record location (file:line) for each potential match
  3. Evaluate signal strength: For each match, assess how strongly it indicates true presence

    • Strong: exact match with clear context
    • Medium: partial match or ambiguous context
    • Weak: possible match requiring human verification
  4. Assess false positive risk: Determine likelihood that detections are spurious

    • High risk: generic patterns, noisy data, few matches
    • Low risk: specific patterns, clean data, multiple corroborating signals
  5. Ground claims: Attach evidence anchors to all detection signals

    • Format: file:line for file-based targets
    • Include snippet of matched content for verification

Read the full file on GitHub · 198 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 3d ago First seen · 198 lines · 34 tokens per session scan A 79e9ee741307

Subscribe to this mod's changes

detect is a skill published in the GitHub repository synaptiai/agent-capability-standard (4 stars, last pushed 4d ago), licensed Apache-2.0. It adds 34 tokens to every session and 1,602 once invoked, about $0.0002 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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