Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/seancrecord/scvd-general-store-reponpx agentmods add skills/seancrecord/scvd-general-store-repo/scvd-x402-verificationWrote 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/seancrecord/scvd-general-store-repo/scvd-x402-verification)<a href="https://agentmods.dev/skills/seancrecord/scvd-general-store-repo/scvd-x402-verification"><img src="https://agentmods.dev/badge/skills/seancrecord/scvd-general-store-repo/scvd-x402-verification/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/seancrecord/scvd-general-store-repo/scvd-x402-verification"><img src="https://agentmods.dev/badge/skills/seancrecord/scvd-general-store-repo/scvd-x402-verification.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 | $0.00040 | $0.03298 |
| Opus 5.5 | $0.00016 | $0.01319 |
| Sonnet 5.5 | $0.00008 | $0.00660 |
| Haiku 4.5 | $0.00004 | $0.00330 |
Grade A, and why
scvd-x402-verification scanned grade A with 1 finding 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 25d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl --fail-with-body https://scvd.store/api/preflight/v2 \ Copies of this mod
1 near-identical copy found in the catalogue:
- scvd-x402-verification — 100% identical, 306 lines differ
How it starts
The opening of the file, as written. The whole thing — 271 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Checking an x402 door before and after you pay
Use SCVD before paying an unfamiliar x402 endpoint, to check a signed receipt from any issuer, or when a recipient needs a durable independent observation. SCVD observes and signs; it does not guarantee delivery, resolve disputes, or rate vendors.
Nothing from this store can act without your decision. Never provide credentials, private keys, seed phrases, or wallet secrets.
Connect and start free
Connect a remote MCP client to https://scvd.store/mcp; read tools/list
for the current schemas. The full store guide is at read_store_guide.
This focused skill is also installable from its public GitHub source:
npx skills add seancrecord/scvd-general-store-repo --skill scvd-x402-verification
A missing marketplace listing is not proof that the source or service is missing. Without MCP, use the public HTTP preflight directly:
curl --fail-with-body https://scvd.store/api/preflight/v2 \
-H 'Content-Type: application/json' \
--data '{"url":"https://merchant.example/paid-endpoint"}'
Replace the example with the exact endpoint under consideration.
preflight_endpoint is the free MCP instrument; read its returned battery
version rather than assuming it selected HTTP v2.
Decide from the reading, not the label
When present, inspection separates reachability, observed protocols,
unverified advertised terms, structural findings and gaps. Include
inspection.observed_at with the reading; a missing observation time remains
unknown. The top-level verdict is x402-specific: an MPP-only endpoint may be
not_ready there without being globally broken. Mixed endpoints retain both
protocol readings. Read mpp and mpp_core under their own battery and source
versions, including unmeasured checks. Inspection signatures are not_checked;
shape is not signature validity, settlement, delivery or permission to pay.
For an older response without this block, preserve the fields actually present.
Missing historical MPP observations remain unmeasured; never amend signed bytes
with the results of a fresh probe.
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.
- 25d ago Changed · +40 lines d904552e72d7
- 1mo ago Changed · +20 lines 983538db2f8c
- 1mo ago Changed · +25 lines 32732be3b83a
- 1mo ago Changed · +4 lines f6a56576ff00
- 1mo ago Changed · +30 lines 39ad249e22e1
- 1mo ago Changed · +77 lines 7b9f85020ac6
- 1mo ago First seen · 75 lines · 40 tokens per session scan A 67eae3b0a28c
scvd-x402-verification is a skill published in the GitHub repository seancrecord/scvd-general-store-repo (3 stars, last pushed today), licensed MIT. It adds 40 tokens to every session and 3,298 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-16.
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Project already-held SameDayDesk GET /extract or POST /extract/batch JSON into buyer-named records using explicit JSON Pointers and a local JSON Schema. Use when the caller already has observation JSON plus mapping and schema files. Do not fetch, pay, infer entities, or treat payment as useful output. Partial…