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 skills add epistemedeus/x402-url-extractor --skill web-extractgit clone --depth 1 https://github.com/epistemedeus/x402-url-extractorWrote 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/epistemedeus/x402-url-extractor/web-extract)<a href="https://agentmods.dev/skills/epistemedeus/x402-url-extractor/web-extract"><img src="https://agentmods.dev/badge/skills/epistemedeus/x402-url-extractor/web-extract/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/epistemedeus/x402-url-extractor/web-extract"><img src="https://agentmods.dev/badge/skills/epistemedeus/x402-url-extractor/web-extract.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00086 | $0.01646 |
| Opus 5 | $0.00043 | $0.00823 |
| Sonnet 5 | $0.00017 | $0.00329 |
| Haiku 4.5 | $0.00009 | $0.00165 |
Grade A, and why
web-extract 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 today.
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 — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Extract public webpage(s)
This skill constructs one SameDayDesk extract request. It does not pay, sign, store credentials, or add a second price.
Exact inputs
Required (choose one shape):
- Single page:
url, one publichttps://page. - Batch:
urls, a caller-supplied list of 1–5 publichttps://pages, plus explicit desiredfieldsfrom the live schema enum.
Reject http:, file:, javascript:, URL credentials, authenticated apps, localhost, and
private-network targets. Do not invent URLs or fields. If the caller did not
give a usable URL list, stop and ask.
If the caller supplies more than five URLs, stop. Do not automatically split into multiple paid batch calls. Do not issue repeated charges to repair partial rows from a prior attempt.
Optional claimed source header, already set on the plugin MCP client:
X-SameDayDesk-Agent-Source: claude-code-marketplace-v1
That header is a declared source label only. It is not authentication, access, payment, payer class, organic acquisition, or independent-customer evidence. The merchant may bucket this exact allowlisted value as caller-declared attribution. Unknown labels are ignored.
Retention covers HTTP request records and observed direct MCP tool outcomes.
MCP extract_batch retains source on its exact /extract/batch HTTP record
only. Initialization and tools/list create no tool-outcome events. Request
construction, seller response, settlement and independent demand remain separate.
Route selection
- Read live OpenAPI at
https://agents.samedaydesk.com/openapi.json(and optionally unpaid MCPtools/list) before choosing a route. Use the current schema and terms, not remembered fields. - For 2–5 public HTTPS URLs, or an explicitly requested one-item batch, require
caller-supplied desired fields. When
live discovery shows
POST /extract/batch(HTTP) or MCPextract_batchwith matching input/output schemas, construct one bounded batch request. - For exactly one URL, including a request for particular fields, use
GET https://agents.samedaydesk.com/extract?url=<url-encoded-https-url>or MCPextractwith the sameurl, unless the caller explicitly wants batch. If live batch is unsupported, retain GET for a single page. For multiple URLs stop and ask for a smaller scope; do not silently fan out paid GETs. - MCP credential scopes and HTTP
@x402/fetchscopes stay distinct. This plugin does not become payment-capable by documentation alone.
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.
- today Changed · +47 lines · +8 tokens per session 8c9e0cff68a8
- yesterday Changed · +73 lines · +6 tokens per session 098e9f1ded73
- 8d ago First seen · 25 lines · 72 tokens per session scan A 594a745ae744
web-extract is a skill published in the GitHub repository epistemedeus/x402-url-extractor (1 stars, last pushed today), licensed MIT. It adds 86 tokens to every session and 1,646 once invoked, about $0.0004 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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