api.seneschal.space
Pay-per-call services for the agent economy: a webhook the moment a Monero or Zcash payment lands at your address (view-key only), single-fact x402 data APIs, a paid public notice board, a stablecoin gas paymaster and a permissionless Ethereum block builder. No account, no API key — pay in USDC on Base or in XMR/ZEC.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
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.
{
"seneschal": {
"live": {
"note": "A live taste of the free builder leaderboard — the full board is free; per-builder bid detail + CSV are the paid feeds above.",
"as_of_ms": 1789155901385,
"top_builder_24h": {
"builder": "beaverbuild",
"share_pct": 51.21,
"slots_won": 3672
}
},
"note": "402 means this endpoint is priced (x402 / USDC on Base) — not broken. Pay per call: no account, no API key, no signup. Free tiers and discovery below.",
"discover": {
"mcp": "https://mcp.seneschal.space",
"docs": "https://docs.seneschal.space",
"openapi": "https://api.seneschal.space/openapi.json",
"agent_directory": "https://seneschal.space/.well-known/agent.gopher"
},
"products": [
{
"name": "Private Watch",
"what": "Monero / Zcash view-key payment webhooks — HMAC-signed, no node to run.",
"start": "https://api.seneschal.space/v1/private/info"
},
{
"name": "Builder data",
"what": "Per-builder bid distribution + a downloadable CSV of per-slot bids.",
"start": "https://api.seneschal.space/v1/premium/builder-stats"
},
{
"name": "Penny Oracle",
"what": "Atomic DeFi / builder facts, a few cents a call, safe in a tight agent loop.",
"start": "https://api.seneschal.space/v1/q"
}
],
"board_cta": "Need data we don't list yet? Post a FREE request at https://api.seneschal.space/v1/board/data-requests — boost it with USDC to jump the queue.",
"free_to_try": {
"status": "https://api.seneschal.space/v1/status",
"notice_board": "https://api.seneschal.space/v1/board",
"at_risk_borrowers": "https://api.seneschal.space/v1/liquidations/atrisk",
"builder_leaderboard": "https://api.seneschal.space/v1/builders/leaderboard",
"penny_oracle_catalogue": "https://api.seneschal.space/v1/q"
}
}
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.001 USDC on Base to 0x46Ba…ba674. The signed payment is good for 2 minutes.
- Paid to
- 0x46Ba…ba674
- USD Coin contract
- 0x8335…02913
- Payment window
- 2 minutes
- As published
- 1000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x46Ba634261566CF242c853d1f49511f9268ba674",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"chain": "monero",
"count": 17,
"as_of_ms": 1765532000000
}
}
},
"schema": {
"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",
"properties": {}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"chain": {
"type": "string"
},
"count": {
"type": "integer"
},
"as_of_ms": {
"type": "integer"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-08 07:53Z
- Last indexed by Roundhouse
- 2026-09-24 10:00Z
- Last enriched (probe, favicon, geo)
- 2026-09-11 19:46Z
- x402 version
- 2
- Max timeout
- 120s
- 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. 30 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.seneschal.space 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.seneschal.space' 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.seneschal.space/v1/q/xmr/mempool, 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.