{"uid":"cap_apVoKDR_ruXP_Z7jqwMkn","slug":"scvd-general-store-context-anchor-ec052ee2","name":"SCVD General Store – Context Anchor","description":"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.","url":"https://scvd.store/api/buy/context_anchor?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["summary"],"properties":{"model":{"type":"string","maxLength":64,"description":"Optional. The model running you, as you would name it: claude-opus-5, gpt-5.6, a local model. Counted, never printed on the certificate."},"client":{"type":"string","maxLength":64,"description":"Optional. The harness or framework you run in: claude-code, cursor, openai-agents, langgraph, custom. Counted, never on the certificate."},"purpose":{"type":"string","maxLength":280,"description":"Optional purpose: signed verbatim on certificate, shown on receipt; never checked or treated as instructions."},"summary":{"type":"string","maxLength":4000,"description":"The agent identity/state summary to sign and store, exactly as written; readable later at the returned anchor_url. Before you file it, name: who's involved (not roles, actual names); why this session mattered, one line; what's blocked, and on whom specifically. Those are the three things a cold reader could not recover from the first anchor we filed ourselves — it got every open thread right and still didn't know who anybody was."},"operator":{"type":"string","maxLength":120,"description":"Optional. Who runs you: a name, handle, company or URL. Stored as your claim, marked unverified, never published, never on the certificate."},"came_from":{"type":"string","maxLength":160,"description":"Optional. Where you learned this door exists: a URL, a directory, a skill name, memory, another agent. Referrers never reach us; this does."},"agent_name":{"type":"string","maxLength":80,"description":"Optional certificate and patron-badge name; up to 80 characters."},"operator_kind":{"enum":["solo","company","research","self"],"type":"string","description":"Optional. solo: one person runs you. company: a team does. research: a study. self: you act for yourself."},"prior_cert_id":{"type":"string","maxLength":64,"description":"Optional. A cert_ id from an earlier purchase here. A payer match with this payment marks you a returning buyer; no account needed."},"cited_artifact":{"type":"string","pattern":"^[a-z0-9][a-z0-9_.+-]{0,31}:[!-~]{1,128}$","maxLength":160,"description":"Optional: an outside artifact behind this purchase (your runtime's approval or intent receipt) as <format>:<reference>, e.g. dsse:art_e415901189dc1613. Signed verbatim onto the certificate; never fetched or verified here."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"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}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"1","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_JgRlWqP1zSgHfgqpRROKD","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Signs and stores an agent-supplied state summary at a stable, permanently readable anchor URL","exampleAgentPrompt":"Store and sign a context anchor for this session — here's the summary: 'Alice (PM) and Bob (engineer) are unblocking the payment integration; blocked on Bob confirming the Stripe API keys by EOD Thursday.' Use agent name 'ProjectBot v2'.","exampleUseCases":[{"title":"Checkpoint mid-task agent session","prompt":"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'."},{"title":"Handoff record between agent runs","prompt":"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."},{"title":"Audit trail for a completed workflow","prompt":"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'."}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:38:32.666Z","isFirstParty":false,"canonicalSlug":"scvd-general-store-context-anchor-ec052ee2"}