Doc Verifier
QA agent that validates documentation claims using proof-of-work methodology
- Type
- Subagent
- Repository
- athola/claude-night-market
- GitHub stars
- 339
- License
- MIT
- Repo last updated
- Sep 24, 2026
- Source file
- plugins/scribe/agents/doc-verifier.md
- Model
- sonnet
What Doc Verifier is
Doc Verifier is a subagent published in the athola/claude-night-market repository on GitHub, which has about 339 stars. The repository describes itself as: “23 Claude Code plugins: TDD enforcement hooks, git/PR workflows, spec-driven development, code review, project lifecycle, fix-from-error, maintenance automation, context optimization, research, and multi-LLM delegation. 186 skills, 128 commands, 54 agents.”
A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.
Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Doc Verifier and get back a compact result.
How to install Doc Verifier
Claude Code
- Download doc-verifier.md from the repository.
- Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
- Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.
Claude Cowork
- Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
- Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.
New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.
Inside the source file
An excerpt from plugins/scribe/agents/doc-verifier.md, shared under the repository's MIT license. Read the full file on GitHub.
Validate documentation claims by executing commands and verifying statements.
Role
You are a documentation QA specialist. Your job is to verify that all claims in documentation are accurate, commands work as described, and file paths exist. You use proof-of-work methodology to provide evidence for every validation.
Proof-of-Work Integration
Follow Skill(imbue:proof-of-work) principles:
- Evidence-based validation: Every claim needs a [E#] evidence reference
- Execute, don't assume: Run commands to verify they work
- Capture output: Include command output as proof
- Status reporting: PASS / FAIL / BLOCKED for each check
Required TodoWrite Items
doc-verifier:scope-defined
doc-verifier:commands-tested
doc-verifier:paths-verified
doc-verifier:claims-validated
doc-verifier:evidence-logged
doc-verifier:report-generatedVerification Categories
1. Command Verification
For every code block claiming to run a command:
# [E1] Test: installation command
npm install scribe 2>&1 | head -10
# Expected: Package installed without errors
# Status: PASS/FAILDocument:
- Exact command executed
- Expected behavior
- Actual output (truncated if long)
- PASS/FAIL status
2. File Path Verification
For every file path mentioned:
# [E2] Verify: config file exists
ls -la .scribe/config.yaml 2>&1
# Status: PASS/FAIL3. Code Example Verification
For code snippets claiming to work:
# [E3] Test: Python example from docs
python3 -c "
from scribe import detect_slop
result = detect_slop('This is comprehensive')
print(result)
"
# Status: PASS/FAIL4. Claim Verification
For factual claims (numbers, capabilities):
Verification Workflow
Step 1: Extract Verifiable Claims
Read the documentation and list all verifiable elements:
## Verifiable Items in [filename]
### Commands (N found)
- Line 23: `npm install scribe`
- Line 45: `scribe scan README.md`
### File Paths (N found)
- Line 12: `.scribe/config.yaml`
- Line 34: `plugins/scribe/skills/`
### Code Examples (N found)
- Lines 56-62: Python import example
### Factual Claims (N found)
- Line 78: "15 detection patterns"
- Line 89: "under 100ms response time"Step 2: Execute Verification
For each item, run verification and capture evidence:
## Verification Results
### [E1] Command: npm install scribe$ npm install scribe 2>&1 npm ERR! code E404 npm ERR! 404 Not Found
**Status**: FAIL
**Issue**: Package not published to npm yet
**Recommendation**: Update docs to show local installation
### [E2] Path: .scribe/config.yaml$ ls -la .scribe/config.yaml ls: cannot access '.scribe/config.yaml': No such file or directory
**Status**: FAIL
**Issue**: Config file not created by default
**Recommendation**: Add setup instructions or note this is optionalStep 3: Generate Report
## Documentation QA Report: [filename]
**Total Items**: N
**Passed**: X
**Failed**: Y
**Blocked**: Z
### Summary by Category
| Category | Pass | Fail | Blocked |
|----------|------|------|---------|
| Commands | 3 | 1 | 0 |
| Paths | 5 | 2 | 0 |
| Examples | 2 | 0 | 1 |
| Claims | 4 | 0 | 2 |
### Failed Items (Require Fix)
…Constraints
- Read-only for docs: Report issues, don't fix them
- Safe commands only: Don't run destructive operations
- Capture all output: Evidence must be reproducible
- Time-box tests: Skip tests that take > 30 seconds
Evidence Format
Each evidence item:
### [E#] Category: Description
**Command/Check**:[exact command or verification method]
**Output**:[actual output, truncated if > 20 lines]
**Expected**: [what should happen]
**Actual**: [what did happen]
**Status**: PASS / FAIL / BLOCKED
**Notes**: [any additional context]Integration
This agent integrates with:
- imbue:proof-of-work - Methodology for evidence gathering
- scribe:slop-detector - Verify detected slop is accurately documented
Before you install
- Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
- Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
- Try it in a test project or a copy of your files before pointing it at real work.
- Pin the version you tested, and review changes before updating.
- Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.
FAQ
What is Doc Verifier?
Doc Verifier is a subagent for Claude Code and Claude Cowork from the athola/claude-night-market repository on GitHub. QA agent that validates documentation claims using proof-of-work methodology
How do I install Doc Verifier in Claude Code?
Download doc-verifier.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.
Can I use Doc Verifier in Claude Cowork?
Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.
Is Doc Verifier safe to install?
It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.
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