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Agent skill

Verify Document

by sickn33 in sickn33/agentic-awesome-skills

Check whether a document (PDF or image) shows signs of tampering or forgery before you rely on it.

Apache-2.0Auto-check passedDocuments & Office

Install Verify Document

skills CLI
$ npx skills add sickn33/agentic-awesome-skills --skill verify-document -a claude-code

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

GitHub CLI
$ gh skill install sickn33/agentic-awesome-skills verify-document --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/sickn33/agentic-awesome-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/verify-document .claude/skills/verify-document && 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
verify-document
GitHub stars
47k
Used in
1 other repo
Token cost
~1.1k tokens
SKILL.md length
416 words
Files
1
Skills in repo
1,354
Repo updated
First seen
Licence
Apache-2.0

At a glance

Check whether a document (PDF or image) shows signs of tampering or forgery before you rely on it.

  • Works in 6 steps: Get the document. URL or local file path… → Optionally check the cache first. If the… → Run verification. POST the document → …
  • The user asks to verify a payslip
  • SKILL.md covers When to use, Instructions, Output format and Limitations and Safety, plus 1 more section
  • Calls curl; reaches stipple.sh; needs STIPPLE_API_KEY

What it does

Verify Document is an agent skill from sickn33/agentic-awesome-skills. Check whether a document (PDF or image) shows signs of tampering or forgery before you rely on it. Use when the user asks to verify a payslip, invoice, bank statement, ID document, contract, or any document where authenticity matters.

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 Documents & Office, covering Forms and invoices. The repository describes itself as: AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 2,400+ agentic skills. Includes… The licence is Apache-2.0.

When your agent uses it

  • The user asks to verify a payslip
  • Any document where authenticity matters

Example prompts

  • “/verify-document”

Requirements

  • A credential in STIPPLE_API_KEY

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

  1. Get the document. URL or local file path (PDF, PNG, JPEG, BMP, TIFF).
  2. Optionally check the cache first. If the user has the file's SHA-256, check whether it's already been inspected (free)
  3. Run verification. POST the document
  4. Interpret the response. Two independent axes — read both
  5. Report honestly. This is a signal with evidence, not a verdict
  6. Pair with related checks. For identity documents, follow with a 100-point identity check (/v1/identity-check). For extraction, use…

What it can do on your machine

Read from SKILL.md and the folder at commit ec02547. 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

    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:

    • stipple.sh

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • STIPPLE_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Verify Document loads about 1.1k tokens when it runs. Until then it costs about 63 tokens; SKILL.md has 416 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~63
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 sickn33/agentic-awesome-skills at commit ec02547, republished under its Apache-2.0 licence (© sickn33). 416 words, ~1,111 tokens.

Download SKILL.mdSave it as .claude/skills/verify-document/SKILL.md (or your agent's skills folder).
name
verify-document
description
Check whether a document (PDF or image) shows signs of tampering or forgery before you rely on it. Use when the user asks to verify a payslip, invoice, bank statement, ID document, contract, or any document where authenticity matters.
category
document-verification
risk
critical
source
community
source_repo
Sketchjar/stipple-agent-skills
source_type
community
date_added
2026-08-31
author
Sketchjar
tags
document-verification, fact-checking, stipple, authenticity
tools
claude, cursor, gemini, codex
license
Apache-2.0

Document Verification

Inspect a document for forensic authenticity signals — not a fraud verdict, but a risk band with the evidence behind it. Uses the Stipple API (free anonymous tier, no signup).

When to use

  • Before onboarding a tenant, contractor, or employee from uploaded documents
  • Before paying an invoice that arrived by email
  • Before relying on a bank statement, payslip, or certificate in any workflow
  • Reviewing documents in due diligence, claims processing, or loan applications

Instructions

  1. Get the document. URL or local file path (PDF, PNG, JPEG, BMP, TIFF).

  2. Optionally check the cache first. If the user has the file's SHA-256, check whether it's already been inspected (free):

    bash
    curl "https://www.stipple.sh/v1/warrants/check?sha256=<hash>"

  3. Run verification. POST the document:

    bash
    curl -X POST https://www.stipple.sh/v1/warrants \
  -F "file=@payslip.pdf" \
  -H "Authorization: Bearer $STIPPLE_API_KEY"

    Add ?fresh=true to force re-inspection of a previously cached document. Add ?deep=true for deep inspection (more thorough, more credits).

  4. Interpret the response. Two independent axes — read both:

    AxisQuestion it answers
    risk_bandDoes anything look tampered? (low / medium / high)
    inspection_qualityCould the engine actually see enough to judge? (thorough / limited / poor)

    A clean phone photo of a real payslip is commonly low risk + limited quality — low coverage is not risk. Per-signal evidence includes: amount/words mismatch, font discontinuity in values, date anomalies, document label integrity, identifier checksums (ABN/ACN/TFN), table arithmetic.

  5. Report honestly. This is a signal with evidence, not a verdict:

    • "risk_band: LOW — nothing looks tampered"
    • "inspection_quality: limited — couldn't inspect everything; low coverage is NOT fraud"
    • Show the per-signal evidence for anything flagged

  6. Pair with related checks. For identity documents, follow with a 100-point identity check (/v1/identity-check). For extraction, use extract-document-data.

Show full SKILL.md (158 more words)Show less

Output format

risk_band:           LOW — Nothing looks tampered.
inspection_quality:  limited
recommended action:  review_before_action

evidence (signals):
  [pass] Amount words/figure mismatch: Spelled-out amounts agree with figures.
  [pass] Font discontinuity in value: Numeric values share the font of surrounding text.
  [skip] Identifier checksum: No checksummable identifier (ABN/ACN/TFN) present.

Limitations and Safety

  • This workflow uploads documents to a hosted third party. Obtain explicit approval, minimize personal, financial, identity, and confidential data, and confirm the provider's current retention, residency, access, and deletion terms first.
  • Forensic signals can miss sophisticated tampering or flag benign editing, scanning, compression, and template artifacts. A low-risk result is not proof of authenticity, and a high-risk result is not proof of fraud.
  • Preserve the original bytes and use authoritative issuer verification plus a qualified human reviewer before payment, onboarding, lending, employment, disciplinary, compliance, or legal action.

Notes

  • Document types the engine recognizes (payslips, invoices, bank statements) get type-specific checks; unrecognized types get generic checks only — say so in your report
  • Identical files are cached by content hash — re-checking the same bytes returns instantly and free
  • This measures forensic integrity, not authorship style — for "was this written by AI", use AI-text detection instead
  • Anonymous free tier: shared weekly allowance. Free key at https://www.stipple.sh

© sickn33, 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 skills/verify-document of sickn33/agentic-awesome-skills.

Open the folder on GitHubat commit ec02547

Used in 1 other repository

We found 5 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in sickn33/agentic-awesome-skills, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Verify Document 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.

Verify Document compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Verify Document this skillsickn33/agentic-awesome-skills47k1 repos~1.1kAutomated safety check: PassApache-2.0
Form Fillingplatonai/Browser41.2k—~1.1kAutomated safety check: PassApache-2.0
Code2mediatsingliuwin/autoclaw283—~956Automated safety check: PassMIT
Token ReceiptHchen1218/token-receipt126—~2.1kAutomated safety check: PassNone
Invoice Makertsingliuwin/autoclaw283—~612Automated safety check: PassMIT
Invoice Generatorluzhenqian/ai-coding-lab152—~955Automated safety check: PassNone

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Categories

Questions about Verify Document

What does Verify Document do?

Check whether a document (PDF or image) shows signs of tampering or forgery before you rely on it. Verify Document is an agent skill from sickn33/agentic-awesome-skills. Check whether a document (PDF or image) shows signs of tampering or forgery before you rely on it.

When should I use Verify Document?

Verify Document fits situations like: the user asks to verify a payslip; any document where authenticity matters.

How do I install Verify Document in Claude Code?

Run `npx skills add sickn33/agentic-awesome-skills --skill verify-document -a claude-code`. Or copy the skill folder (skills/verify-document in sickn33/agentic-awesome-skills) into .claude/skills/verify-document in your project. Claude Code loads it when a task matches its description.

How do I install Verify Document in Codex?

Run `npx skills add sickn33/agentic-awesome-skills --skill verify-document -a codex`. Or copy the skill folder (skills/verify-document in sickn33/agentic-awesome-skills) into .agents/skills/verify-document in your project. Codex loads it when a task matches its description.

Can I use Verify Document 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 sickn33/agentic-awesome-skills --skill verify-document -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/verify-document, .gemini/skills/verify-document, .github/skills/verify-document and .opencode/skills/verify-document in your project.

What does Verify Document need to run?

Going by SKILL.md and its folder, Verify Document needs the command-line tools its instructions call (curl) and credentials named STIPPLE_API_KEY. Our summary lists: A credential in STIPPLE_API_KEY.

Does Verify Document access the network?

SKILL.md names 1 domain. In commands or code: stipple.sh; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Verify Document 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 Verify Document use?

Verify Document is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Verify Document use?

About 1.1k tokens (SKILL.md is roughly 4.4k 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 Verify Document?

Skills that share tags, products or a category with Verify Document: Form Filling (platonai/Browser4, 1.2k stars), Code2media (tsingliuwin/autoclaw, 283 stars), Token Receipt (Hchen1218/token-receipt, 126 stars) and Invoice Maker (tsingliuwin/autoclaw, 283 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Verify Document?

sickn33 (a GitHub user) maintains it in sickn33/agentic-awesome-skills, which has 47,343 GitHub stars. The repository holds 1,354 skills in this directory. The repository was last updated on October 7, 2026.

Source: sickn33/agentic-awesome-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.