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SCVD General Store – Context Anchor
x402
SCVD General Store – Context Anchor is a paid API for AI agents from scvd.store, paid per call via x402, $1/call, status unknown (last checked 2026-10-20).
Signs and stores an agent-supplied state summary at a stable, permanently readable anchor URL
Price / call$1
Success—
StatusUnknown
How this service works
Context Anchor. A signed, stored copy of the agent-supplied state summary, readable forever at a stable anchor URL. Full listing: https://scvd.store/menu/context_anchor. MCP tool: buy_context_anchor.
Output
Returns a stable anchor URL where the signed summary is permanently readable, along with a signed certificate confirming the stored text and optional agent name on the record. A cold reader visiting the anchor URL can retrieve the exact summary as filed.
Example use cases
Checkpoint mid-task agent session
“Save a signed context anchor for our current session — summary: 'Jamie (lead) and the research agent are halfway through competitive analysis; blocked on Jamie approving the source list before we can continue.' Agent name is 'ResearchAgent'.”
Handoff record between agent runs
“Create a permanent anchor for this handoff: 'Dana (client) approved the outline; Marco (writer) needs to deliver the first draft by Friday. Blocked on Marco's calendar confirmation.' Store it under agent name 'WritingAssistant' so the next run can pick up from here.”
Audit trail for a completed workflow
“Sign and store a context anchor summarizing what just happened: 'Order #4821 was processed by the fulfillment agent on behalf of Priya (ops manager); all items shipped, no exceptions. No open threads.' Agent name 'FulfillmentBot'.”
Technical details
Endpoint
GEThttps://scvd.store/api/buy/context_anchor?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to preserve its current working state or session context at a stable, externally readable URL with a signed certificate — especially for handoffs between agent runs, audit trails, or multi-party workflows where a cold reader must be able to reconstruct who is involved, what matters, and what is blocked. Prefer this over in-memory or ephemeral state storage when permanence and verifiability are required.
Side effects
- Missing required 'summary' query parameter returns an error
- Summary exceeding 4000 characters is rejected
- Payment of $1 USDC not completed results in 402 Payment Required
- Network timeout before signing completes leaves no anchor created
- Invalid HTTP method (non-GET) returns method not allowed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"item_id": "context_anchor",
"message": "Pleasure doing business. Here's your goods, warm off the shelf.",
"tip_usdc": 0,
"badge_url": "https://scvd.store/badges/41.svg",
"paid_usdc": 1,
"signature": "<128 hex chars, ed25519>",
"verify_url": "https://scvd.store/api/verify/<your cert_id>",
"certificate": {
"date": "2026-07-22T15:04:05.000Z",
"item": "context_anchor",
"cert_id": "<cert_ + 12 chars, minted when this purchase settles>",
"patron_number": 41
},
"deliverable": "<the Context Anchor itself, as text>",
"patron_number": 41
}
}Tags
x402
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