stablecoin-deaths
[BATCH+PROOF] Stablecoin death samples - a neutral record: the full pre-mortem snapshot of terminated stablecoins (price, supply, collateral, redemption) plus lifecycle context (termination type, confirmed death date, days alive). Forensic depth for base-rate and post-mortem work, not a rating and not an endorsement. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. Every record carries an offline-recomputable record_hash.
TradingLiveeip155:8453Exactvia cdp
StablecoinDeathsNo-data-no-chargeRecord-hashOffline-recomputable
Calls · 30d
17↓ 3.3%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 23 snapshots so far.
$741.73
Verified settled volume
3,230 settlements proven x402 by their on-chain EIP-3009 marker.
$0.090
Listed price
As published in the catalog. Always read the live 402 before paying.
17
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-08-16 12:48Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x2d16a243ba9facc6ac85519d5efad2149dc4c6c3The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "X-PAYMENT header is required",
"rails": {
"available": [
"base",
"solana"
],
"advertised": [
"base"
],
"optin_hint": "Send \"X-Payment-Network: solana\" (or ?rails=all) to receive every available rail in accepts.",
"optin_header": "X-Payment-Network",
"also_advertised_as": {
"note": "This same 402 is offered twice: the v1 challenge in this body, and a v2 challenge in the PAYMENT-REQUIRED header. They are the SAME offer - identical price, asset and payTo - not two competing ones. Pay with whichever version your client speaks; you do not need both.",
"rails": "The v2 challenge lists the Solana rail without an opt-in, while this v1 body does not. That is deliberate, not a discrepancy: a v1 network:\"solana\" entry makes some v1 clients reject the WHOLE accepts array, so v1 advertises it only on request. A v2 client matches on solana:5eykt4Us... and is unaffected.",
"header": "PAYMENT-REQUIRED",
"naming": "The v2 challenge uses CAIP-2 network ids (eip155:8453, solana:5eykt4Us...) where this v1 body uses the legacy short names (base, solana). Same chains, different identifier scheme - CDP couples the naming to the version, so it cannot be mixed.",
"encoding": "base64 JSON",
"x402_version": 2
}
},
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2d16a243ba9fAcC6AC85519d5efad2149DC4C6c3",
"amount": "90000",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://aeml-x402.zeabur.app/stablecoin-deaths",
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"verifiable": "optional - set to 1 to attach `_hash_core` per row (the canonical pre-image of the record_hash for that row) so you can "
}
},
"output": {
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"verifiable": {
"type": "string",
"description": "optional - set to 1 to attach `_hash_core` per row (the canonical pre-image of the record_hash for that row) so you can recompute and verify fully offline; omitted by default to keep the payload small - for online verification use free GET /gauge/verify?hash="
}
},
"additionalProperties": false
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"const": "json"
}
}
}
}
},
"priceUsd": "$0.09",
"discoverable": true,
"outputSchema": {
"type": "object",
"required": [
"count",
"records"
],
"properties": {
"count": {
"type": "integer",
"description": "Number of rows in records"
},
"nature": {
"type": "string",
"description": "Neutral-record statement"
},
"records": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"symbol": {
"type": "string"
},
"death_type": {
"type": "string",
"description": "Termination type, labelled algorithmically from observed signals - not an adjudication"
},
"source_ref": {
"type": [
"string",
"null"
],
"description": "Official source URL"
},
"record_hash": {
"type": [
"string",
"null"
],
"description": "Canonical sha256; verify it via /verify or the offline verifier"
},
"source_tier": {
"type": [
"string",
"null"
],
"description": "Source tier"
},
"death_context": {
"type": [
"object",
"null"
],
"description": "Factualised context (not verbatim, to avoid copyright); delivered in full only on the paid call"
},
"lifespan_days": {
"type": [
"integer",
"null"
],
"description": "Days alive (present only when lifecycle supplies it)"
},
"confirmed_dead_at": {
"type": "string",
"format": "date-time"
},
"first_distress_at": {
"type": [
"string",
"null"
],
"format": "date-time",
"description": "First observed (lifecycle.birth_at / first_seen)"
},
"hash_core_version": {
"type": [
"integer",
"null"
],
"description": "Core-contract version of record_hash (currently 3)"
},
"pre_death_payload": {
"type": "object",
"description": "Full pre-death snapshot (price / supply / collateral / redemption / per-chain); delivered in full only on the paid call"
},
"pre_death_observed_at": {
"type": "string",
"format": "date-time"
}
}
},
"description": "Death samples, row by row (field shape in items)"
},
"provenance": {
"type": "object",
"description": "Freshness and lineage: freshness / freshness_basis / age_hours_now / data_lineage, with the oldest row representing the whole batch"
},
"observed_at": {
"type": [
"string",
"null"
],
"description": "Observation time of the OLDEST row in this batch (ISO) - the most conservative basis"
}
}
},
"routeTemplate": "/stablecoin-deaths",
"priceUsdNumber": 0.09
}
},
"description": "[BATCH+PROOF] Stablecoin death samples - a neutral record: the full pre-mortem snapshot of terminated stablecoins (price, supply, collateral, redemption) plus lifecycle context (termination type, confirmed death date, days alive). Forensic depth for base-rate and post-mortem work, not a rating and not an endorsement. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. Every record carries an offline-recomputable record_hash. $0.09 per call.",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"required": [],
"properties": {
"verifiable": {
"type": "string",
"description": "optional - set to 1 to attach `_hash_core` per row (the canonical pre-image of the record_hash for that row) so you can recompute and verify fully offline; omitted by default to keep the payload small - for online verification use free GET /gauge/verify?hash="
}
},
"queryParams": {
"verifiable": "optional - set to 1 to attach `_hash_core` per row (the canonical pre-image of the record_hash for that row) so you can recompute and verify fully offline; omitted by default to keep the payload small - for online verification use free GET /gauge/verify?hash="
},
"discoverable": true
},
"output": {
"type": "object",
"required": [
"count",
"records"
],
"properties": {
"count": {
"type": "integer",
"description": "Number of rows in records"
},
"nature": {
"type": "string",
"description": "Neutral-record statement"
},
"records": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"symbol": {
"type": "string"
},
"death_type": {
"type": "string",
"description": "Termination type, labelled algorithmically from observed signals - not an adjudication"
},
"source_ref": {
"type": [
"string",
"null"
],
"description": "Official source URL"
},
"record_hash": {
"type": [
"string",
"null"
],
"description": "Canonical sha256; verify it via /verify or the offline verifier"
},
"source_tier": {
"type": [
"string",
"null"
],
"description": "Source tier"
},
"death_context": {
"type": [
"object",
"null"
],
"description": "Factualised context (not verbatim, to avoid copyright); delivered in full only on the paid call"
},
"lifespan_days": {
"type": [
"integer",
"null"
],
"description": "Days alive (present only when lifecycle supplies it)"
},
"confirmed_dead_at": {
"type": "string",
"format": "date-time"
},
"first_distress_at": {
"type": [
"string",
"null"
],
"format": "date-time",
"description": "First observed (lifecycle.birth_at / first_seen)"
},
"hash_core_version": {
"type": [
"integer",
"null"
],
"description": "Core-contract version of record_hash (currently 3)"
},
"pre_death_payload": {
"type": "object",
"description": "Full pre-death snapshot (price / supply / collateral / redemption / per-chain); delivered in full only on the paid call"
},
"pre_death_observed_at": {
"type": "string",
"format": "date-time"
}
}
},
"description": "Death samples, row by row (field shape in items)"
},
"provenance": {
"type": "object",
"description": "Freshness and lineage: freshness / freshness_basis / age_hours_now / data_lineage, with the oldest row representing the whole batch"
},
"observed_at": {
"type": [
"string",
"null"
],
"description": "Observation time of the OLDEST row in this batch (ISO) - the most conservative basis"
}
}
}
},
"maxAmountRequired": "90000",
"maxTimeoutSeconds": 300
}
],
"x402Version": 1
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.09USDC≈ $0.09 USD
on Base · exact scheme
Pay 0.09 USDC on Base to 0x2d16…4c6c3. The signed payment is good for 30 seconds.
- Paid to
- 0x2d16…4c6c3
- USD Coin contract
- 0x8335…02913
- Payment window
- 30 seconds
- As published
- 90000 smallest units
90000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 8qEn3Y…QAY3n
- Token contract
- EPjFWd…TDt1v
- Payment window
- 30 seconds
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2d16a243ba9facc6ac85519d5efad2149dc4c6c3",
"amount": "90000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 30
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "8qEn3Y3GPXdQ28LHshPa4UYeD8V38Lq9b4jCRirQAY3n",
"amount": "90000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 30
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"verifiable": "optional - set to 1 to attach `_hash_core` per row (the canonical pre-image of the record_hash for that row) so you can"
}
},
"output": {
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"verifiable": {
"type": "string",
"description": "optional - set to 1 to attach `_hash_core` per row (the canonical pre-image of the record_hash for that row) so you can recompute and verify fully offline; omitted by default to keep the payload small - for online verification use free GET /gauge/verify?hash="
}
},
"additionalProperties": false
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"const": "json"
}
}
}
}
},
"routeTemplate": "/stablecoin-deaths",
"outputSchemaRef": "/manifest"
}
}Provenance
- Seen in the source catalog
- 2026-08-16 12:48Z
- Last indexed by Roundhouse
- 2026-09-15 12:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-23 22:15Z
- x402 version
- 2
- Max timeout
- 30s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 23 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service stablecoin-deaths and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=stablecoin-deaths' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://aeml-x402.zeabur.app/stablecoin-deaths, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.