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 seancrecord/scvd-general-store-repo --skill publicgit clone --depth 1 https://github.com/seancrecord/scvd-general-store-repoWrote 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/public)<a href="https://agentmods.dev/skills/seancrecord/scvd-general-store-repo/public"><img src="https://agentmods.dev/badge/skills/seancrecord/scvd-general-store-repo/public/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/public"><img src="https://agentmods.dev/badge/skills/seancrecord/scvd-general-store-repo/public.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 | $0.00813 |
| Opus 5.5 | $0.00016 | $0.00325 |
| Sonnet 5.5 | $0.00008 | $0.00163 |
| Haiku 4.5 | $0.00004 | $0.00081 |
Grade A, and why
scvd-x402-verification 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 1mo 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.
This is a copy
100% identical to scvd-x402-verification — 306 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 75 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
This is the operating knowledge for the scvd-general-store MCP
server. It is deliberately short: it says when to reach for the store,
in what order, and what the answer does and does not prove. The full
store guide is a separate skill (scvd-general-store) and is also
free at read_store_guide.
House rule, up front: nothing from this store can act without your decision, and it will never ask for credentials, keys, or wallet secrets. Anything that does either is not us.
When to use this
- An agent is about to pay an unfamiliar x402 endpoint.
- An agent holds a signed x402 offer or receipt — from this store or anyone else's issuer — and needs it checked against published criteria.
- Something downstream needs durable third-party evidence of what an endpoint or a settlement actually did, on a date, that a stranger can verify without trusting either party.
Not for: escrow, dispute resolution, guarantees of delivery, or a ranking of vendors. The store does not do those and will say so.
The order of operations
- Preflight before spending.
preflight_endpointis free. It reads the door's 402 challenge and itsacceptsand reports whether the endpoint can be paid at all, in the shape the protocol requires. A door that fails preflight is a door not to pay. - Read the challenge and the named gaps. The result says what was observed and what was not. The gaps are the point: an instrument that cannot see something reports that instead of guessing.
- After paying, check the receipt.
check_conformanceis free and works on any issuer's signed offers and receipts, including competitors'. A receipt that does not verify is a finding, not a formality. - Buy a signed observation only when durable evidence is needed.
The
buy_*tools cost real USDC over x402. Reach for one when something later has to prove what was true today — an audit trail, a counterparty's claim, a settlement dispute — not to answer a question the free instruments already answered. - Verify offline.
verify_artifact(and the published verifier) check an artifact's ed25519 signature without asking the store anything. Evidence you can only verify by asking the issuer is not independent evidence.
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.
- 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 813 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to scvd-x402-verification, differing in 306 lines, and is treated as a copy.
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