detect-ai-text

name: detect-ai-textdescription: Estimate whether a document's prose was written by AI, with the linguistic tells and honest abstention on non-prose. Use when the user asks whether an essay, report, CV, submission, or article was AI-generated — for triage, not proof.category: document-verificationrisk: criticalsource: communitysource_repo: Sketchjar/stipple-agent-skillssource_type: communitydate_added: "2026-08-31"author: Sketchjartags: [document-verification, fact-checking, stipple, authenticity]tools: [claude, cursor, gemini, codex]license: "Apache-2.0"license_source: "https://github.com/Sketchjar/stipple-agent-skills/blob/main/LICENSE"

AI-Text Detection

Inspect a provider’s uncalibrated AI-style signal for a document’s prose, with the specific linguistic tells and an honest abstention when the document isn't prose. Uses an external Stipple API; verify current access, cost and privacy terms.

When to use

• Educators screening student submissions
• Publishers and platforms triaging inbound content
• HR reviewing AI-drafted CVs (flag, don't reject)
• Researchers checking source provenance

Instructions

1. Get the document. URL, local file path (PDF, DOCX, TXT, MD), or raw text via --text.

2. Run detection.

   curl --fail --show-error --silent --max-time 30 -X POST https://www.stipple.sh/v1/detect-ai-text \
     -F "file=@essay.pdf" \
     -H "Authorization: Bearer $STIPPLE_API_KEY"
   

   For raw text: POST JSON {"text": "..."} to the same endpoint.

3. Interpret the response.

   • applicable: false — the document is not prose (forms, tables, scans, spreadsheets). Detection is deliberately refused rather than guessed. Report this and stop.
   • probability — model confidence (0–1), NOT a calibrated truth
   • lean — "ai" | "human" | "unsure"
   • tells[] — the specific phrases/patterns flagged (e.g. "It is important to note that", uniform sentence length, low burstiness)
   • reasoning — why the model reached its verdict
   • limitations — always present; the API states its own noise profile

4. Report honestly. This measures style, not authenticity:

   Question	Tool
   Was this written by AI? (style)	this skill
   Is this document genuine/tampered? (forensics)	verify-document skill

   A human can write generically; an AI can write plainly. One triage signal, never a verdict.

Output format

Provider AI-style score: 0.87 (uncalibrated; lean: ai; not authorship proof)
prose ratio: 0.82

linguistic tells:
  - "It is important to note that, in today's fast-paced world" (stock phrase)
  - uniform sentence length across paragraphs
  - low burstiness; no authorial asides

reasoning: The text relies entirely on formulaic transition clichés...
limitations: The probability is the model's CONFIDENCE, not a calibrated truth.

Limitations and Safety

• AI-text detection is probabilistic and can disproportionately flag templated, coached, translated, accessibility-assisted, or non-native-English writing. Do not use it as proof of misconduct or as the sole basis for employment, academic, publishing, or disciplinary action.
• Uploading a document sends its contents to a hosted third party. Obtain explicit approval first, remove unnecessary personal or confidential material, and verify the provider's current retention and deletion terms.
• Preserve the original work and give the affected person a meaningful human review and appeal path before any consequential decision.

Notes

• Non-prose documents (forms, tables, payslips) get applicable: false — the engine refuses rather than guessing
• Can false-flag templated/coached or non-native-English writing — always present as one signal alongside human review
• Verify current authentication/allowance on https://www.stipple.sh; do not guarantee a free anonymous tier or publish the submitted document.