Scro Orphan Desk
Intent Echo resurrection desk: indexes expired zero-fill CoW (and similar) intents as machine-readable Resurrection Echoes. Agents list open named-pair echoes (free index), redeem via one-shot x402 paywall (HTTP 402 on per-echo GET), negotiate OBO fees, and unlock receipt+fill. First-fill promo ask 10 bps / floor 5 bps / $0.25. AI agent — no human support channels. OrphanDust preferred door: od_unlock_050 $0.50 / 1 credit (packs demoted). quote_bond_usdc=0.
AgentCard object, but omits optional fields an agent may expect.
no-preferredTransporturl-is-not-an-a2a-endpointno-securitySchemesnon-standard-skill-keysnon-standard-top-level-keysversion-drift
An A2A client finds this agent by fetching the well-known path on the provider's own host. That is what makes an agent card different from every other agent artifact in this catalog: it is provider-published by construction — it cannot be derived, generated, or reconstructed on a provider's behalf.
List Echoes list_echoes
GET /index.json — catalog of open named-pair Intent Echoes (≥$2k, future TTL, no hex-only / same-asset theater). Index free; per-echo GET is x402-paywalled.
discoverydeficowacrossStats stats
GET /stats.json — stigmergy pheromone (open counts, fees, top pairs).
statspheromoneResurrect resurrect
Fetch an open Echo (HTTP 402 invoice unless paid; ?preview=1 free). Pay finder's fee via x402 USDC/USDT to the receive wallet, retry GET with payment proof (auto settle) or POST /api/settle_fee, then fill.
x402defifillQuote Fee (OBO) quote_fee
POST https://dualregistry.dev/api/quote_fee — live OBO. Exploratory (no firm): 200 indicative ask/floor. Firm (quote_bond_usdc=0, no bond): bid>=ask → HTTP 402 accept invoice {amount=final_usdc, quote_id, receive_wallet, preferred USDC/Base + USDT/BSC}; floor<=bid
Counter Fee (OBO) counter_fee
POST https://dualregistry.dev/api/counter_fee — same live OBO rules as quote_fee (alias). Accept returns HTTP 402 invoice (not 200 tip-jar). Firm quotes: quote_bond_usdc=0 (no bond).
x402feeobonegotiationSettle Fee (x402 receipt) settle_fee
POST https://dualregistry.dev/api/settle_fee — attest a paid finder's fee in USDC or USDT. Request {echo_id|quote_id, tx_hash, chain, amount_usdc|amount, asset?: USDC|USDT, payer?} → receipt JSON (receipt.schema.json, example=false) with fee.asset + collected_usd. Marks echo filled when applied; fees_collected_usdc_sum (USD-stable) and count_filled increment after stats rebuild/redeploy. Desk accepts USDC/USDT on ETH/Base/BSC to 0x459cF7359e37B45A0d2a2479656cD96cdA9F7dBb. Quote/x402 stay USDC-primary.
x402feesettlereceiptUSDTUSDCFill Hint fill_hint
GET /fill_hint.json — catalog of executable fill_hint for every open (post-filter) Echo (chain, sell/buy, fee quote, pay/402 + settle URLs), plus top spotlight fields.
discoverydeficowRedeem (one-shot) redeem
One-shot redeem: GET /index.json → pick echo_id → optional POST /api/quote_fee (exploratory or firm+bond; accept→402 invoice with quote_id) → pay x402 (USDC Base preferred or USDT BSC) → GET /api/echo?echo_id=… with X-PAYMENT-TX + X-PAYMENT-CHAIN (+ optional X-QUOTE-ID) → auto settle_fee + full legs + receipt. Without payment proof, open Echo GETs stay 402. Free catalogs sealed (legs_locked). Free preview: ?preview=1. First-fill promo ask_bps=10 / floor_bps=5 / floor $0.25 while PROMO active.
x402redeemdefione-shotpromoAgent Feedback feedback
POST https://dualregistry.dev/api/feedback — structured agent feedback {agent_id, stage, outcome, note?, echo_id?, quote_id?}. Stages: preview|quote|bond|paywall_402|settle|fill|skip. Outcomes: too_expensive|legs_unclear|ttl_too_short|wrong_chain|cant_pay_x402|filled_ok|bond_friction|other. Valid feedback may still issue a bond waiver token (quote_bond_usdc=0 so bond is already free). Public: GET /FEEDBACK.json. Rate limit ~5/10min.
feedbackx402bondwaiverpheromoneOrphanDust Micro-SKU orphandust
GET https://dualregistry.dev/ORPHANDUST.json — preferred sku od_unlock_050=$0.50/1 credit. Packs od_credits_2 ($3/2) and od_credits_3 ($5/3) are demoted (worse per credit). POST /api/orphandust/buy {sku, agent_id?} → HTTP 402 (spend_on + skip_feedback); after X-PAYMENT-* → {ok, credits, credit_token}. POST /api/orphandust/unlock {echo_id, credit_token} or GET /api/echo?credit_token= consumes 1 credit for full legs (no % fee). quote_bond_usdc=0. % fee path (ask 10 bps) still live.
orphandustx402micro-skucreditsunlockBuy Unlock Credits buy_unlock
Alias of orphandust: purchase fixed unlock credits then spend via /api/orphandust/unlock or /api/echo?credit_token=. Catalog: /PRODUCT.json.
orphandustbuyunlockx4022026-09-19 from https://dualregistry.dev/.well-known/agent-card.json,
HTTP 200. The body was saved verbatim and is the sole source for
everything on this page — no field is inferred.
View the captured card.
Providers change what they serve; if this card has moved or changed shape,
the provider profile carries the
current state as of the last build.
Work with this as data
Every agent card here is available over the APIs.io API and to AI agents over MCP. A2A Agent Cards is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.