api.unland.dev
Returns ranked bibliographic sources, relevance, and likely page locations from the curated Logos Chirality 76-source research index. Settlement is $0.05 plus $0.01 per delivered source, up to $0.25. No source files, private paths, original filenames, or extracted passages are delivered.
Searchoffline · HTTP 503eip155:8453Uptovia cdp
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 16 snapshots so far.
—
Verified settled volume
0 settlements proven x402 by their on-chain EIP-3009 marker.
$0.250
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-21 16:32Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x1E75a31bA980b1d0aBb2F2A6816063bf45BE35F7The 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.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.25USDC≈ $0.25 USD
on Base · upto scheme
Pay 0.25 USDC on Base to 0x1E75…E35F7. The signed payment is good for 5 minutes.
- Paid to
- 0x1E75…E35F7
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 250000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"facilitatorAddress": "0x14fDa13953Fc30428938E6BF950d036e77214e52",
"assetTransferMethod": "permit2"
},
"payTo": "0x1E75a31bA980b1d0aBb2F2A6816063bf45BE35F7",
"amount": "250000",
"scheme": "upto",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"query": "What does the Gateway Process report say about consciousness?",
"maxSources": 5
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"query": "What does the Gateway Process report say about consciousness?",
"usage": {
"deliveredSources": 1
},
"product": "logos-chirality-source-pack",
"sources": [
{
"kind": "government-record",
"rank": 1,
"year": 1983,
"title": "Analysis and Assessment of Gateway Process",
"authors": [
"Wayne M. McDonnell"
],
"sourceId": "lc76-010",
"accessUrl": "https://www.cia.gov/readingroom/document/cia-rdp96-00788r001700210016-5",
"relevance": 1,
"matchedPages": [
{
"page": 1,
"relevance": 1
}
],
"matchedTerms": [
"gateway",
"consciousness"
]
}
],
"generatedAt": "2026-08-20T00:00:00.000Z",
"limitations": [],
"sourceCount": 1,
"indexVersion": "lc76-hashed-lexical-v2",
"schemaVersion": "1.0",
"noSourceTextDelivered": true
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"query"
],
"properties": {
"query": {
"type": "string",
"maxLength": 2000,
"minLength": 3
},
"maxSources": {
"type": "integer",
"default": 5,
"maximum": 10,
"minimum": 1
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"schemaVersion",
"product",
"query",
"sourceCount",
"sources",
"limitations",
"indexVersion",
"noSourceTextDelivered",
"generatedAt",
"usage"
],
"properties": {
"query": {
"type": "string"
},
"usage": {
"type": "object",
"required": [
"deliveredSources"
],
"properties": {
"deliveredSources": {
"type": "integer",
"maximum": 10,
"minimum": 0
}
},
"additionalProperties": false
},
"product": {
"type": "string",
"const": "logos-chirality-source-pack"
},
"sources": {
"type": "array",
"items": {
"type": "object",
"required": [
"rank",
"sourceId",
"title",
"authors",
"year",
"kind",
"accessUrl",
"relevance",
"matchedTerms",
"matchedPages"
],
"properties": {
"kind": {
"type": "string"
},
"rank": {
"type": "integer",
"minimum": 1
},
"year": {
"type": [
"integer",
"null"
]
},
"title": {
"type": "string"
},
"authors": {
"type": "array",
"items": {
"type": "string"
}
},
"sourceId": {
"type": "string"
},
"accessUrl": {
"type": [
"string",
"null"
]
},
"relevance": {
"type": "number",
"maximum": 1,
"minimum": 0
},
"matchedPages": {
"type": "array",
"items": {
"type": "object",
"required": [
"page",
"relevance"
],
"properties": {
"page": {
"type": "integer",
"minimum": 0
},
"relevance": {
"type": "number",
"maximum": 1,
"minimum": 0
}
},
"additionalProperties": false
}
},
"matchedTerms": {
"type": "array",
"items": {
"type": "string"
}
}
},
"additionalProperties": false
}
},
"generatedAt": {
"type": "string"
},
"limitations": {
"type": "array",
"items": {
"type": "string"
}
},
"sourceCount": {
"type": "integer",
"maximum": 10,
"minimum": 0
},
"indexVersion": {
"type": "string"
},
"schemaVersion": {
"type": "string"
},
"noSourceTextDelivered": {
"type": "boolean",
"const": true
}
},
"additionalProperties": false
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-08-21 16:32Z
- Last indexed by Roundhouse
- 2026-09-08 18:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 03:16Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 503
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. 16 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 api.unland.dev 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=api.unland.dev' 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://api.unland.dev/v1/psi/source-pack, 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.