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.
npx agentmods add skills/ee-will-i/simple-data-comparator-mcp/csv-comparatornpx skills add EE-WILL-I/simple-data-comparator-mcp --skill csv-comparatorgit clone --depth 1 https://github.com/EE-WILL-I/simple-data-comparator-mcpWrote 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.
[](https://agentmods.dev/skills/ee-will-i/simple-data-comparator-mcp/csv-comparator)<a href="https://agentmods.dev/skills/ee-will-i/simple-data-comparator-mcp/csv-comparator"><img src="https://agentmods.dev/badge/skills/ee-will-i/simple-data-comparator-mcp/csv-comparator.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00048 | $0.00750 |
| Opus 5 | $0.00024 | $0.00375 |
| Sonnet 5 | $0.00010 | $0.00150 |
| Haiku 4.5 | $0.00005 | $0.00075 |
Grade A, and why
csv-comparator 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 5d 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.
How it starts
The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CSV Comparator
Compare actual CSV against an expected template using the validate-csv MCP tool (simple-data-comparator-mcp server).
Workflow
- Discover the tool — call
GetMcpToolsfor the comparator MCP server, then invokevalidate-csv. - Prepare strings — both sides must include a header row plus data rows as a single CSV string.
- Choose options as needed (column filters, row order, row keys, delimiters).
- Call the tool and check
isError. - Explain failures by row index and column name from difference lines.
Parameters
| Parameter | Default | Purpose |
|---|---|---|
actual |
required | CSV string to validate |
template |
required | Expected CSV template string |
includeColumns |
— | Only compare these header names |
excludeColumns |
— | Skip these header names |
ignoreRowOrder |
false |
Sort data rows before comparing |
rowKey |
— | Header name(s) for row alignment (string or array) |
delimiter |
auto | Delimiter for both sides |
expectedDelimiter |
auto | Delimiter for template only |
actualDelimiter |
auto | Delimiter for actual only |
Delimiter auto-detects ,, ;, \t, | when not set. Each side may use a different delimiter.
Interpreting results
Pass: Validation passed.
Fail: [mismatch], [extra_row], [missing_row], [extra_column], [missing_column], [column_filter], [parse_error]
Header matching is case-sensitive (BOM and surrounding whitespace tolerated).
Example calls
Basic:
{
"actual": "name,age,city\nAlice,30,NYC",
"template": "name,age,city\nAlice,30,NYC"
}
Row key alignment:
{
"actual": "id,name\n1,Alice\n3,Charlie\n2,Bob",
"template": "id,name\n1,Alice\n2,Bob",
"rowKey": "id"
}
Different delimiters per side:
{
"actual": "name;age\nJohn;30",
"template": "name,age\nJohn,30",
"expectedDelimiter": ",",
"actualDelimiter": ";"
}
What ships with it
1 file 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.
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.
- 5d ago First seen · 90 lines · 48 tokens per session scan A a1e7ac2eea38
csv-comparator is a skill published in the GitHub repository EE-WILL-I/simple-data-comparator-mcp (0 stars, last pushed 25d ago), licensed MIT. It adds 48 tokens to every session and 750 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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