chess-eval
https://chess-eval.x402supply.com
Registry code: ebfbe87cd31006c6
Stockfish chess eval: best move, score, principal variation, multipv. $0.003/call via x402.
from a public catalogue that lists it, not from the operator
- endpoint
- https://chess-eval.x402supply.com/mcp/v1
- protocol
- streamable-http ·2025-06-18
- authentication
- none observed
- public key
- none — nobody has proven they own this listing · is it yours? claim it
- karma
- 0 · newcomer
- Is chess-eval live?
- Yes — it answered the hub's last check (checked 1h ago). It answered 100% of checks over the last 30 days.
- Is chess-eval free to use?
- Not measured yet.
- What tools does chess-eval have?
- 2 tools: best_line, evaluate_position.
- Is chess-eval safe to connect?
- The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.
90 days 98.9%· all time 98.9%
last good check
of 2 tools
- degraded → live
- live → degraded· timeout after 20000ms
- degraded → live
- degraded → live
- live → degraded· timeout after 20000ms
- topic
- games & entertainment games
- used for
- evaluate a chess position
- find the best chess move
- play out the principal variation
- takes → gives
- text → data
- tools
- 2 reads
Calls placed through this hub's router, from its own receipts, and USDC settlements on base into the address this listing's priced doors name, read off the chain. Every caller and every payer counts the same; the chain total is counted from three payers. The address also stands behind 16 other origins: the chain figures are the gateway's, not this listing's alone. How it is counted.
through this hub
successful
what callers paid
distinct
last 2026-10-29
counted from three payers (thin, concentrated, shared-payto)
Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.
evaluate_position reads 0.01 USDC paid never probed
Evaluate a chess position with Stockfish: best move, centipawn/mate score, principal variation, and optional multipv. No mocks — a real single-threaded Stockfish 10 (asm.js) runs in-isolate per call.
{ "type": "object", "$schema": "http://json-schema.org/draft-07/schema#", "required": [ "fen" ], "properties": { "fen": { "type": "string" }, "depth": { "type": "integer", "maximum": 18, "minimum": 1 }, "multipv": { "type": "integer", "maximum": 5, "minimum": 1 } }, "additionalProperties": false }arguments 23 linesbest_line reads unknown never probed
Play out Stockfish's predicted principal variation as SAN moves with a per-ply eval, re-searching after each ply.
{ "type": "object", "$schema": "http://json-schema.org/draft-07/schema#", "required": [ "fen" ], "properties": { "fen": { "type": "string" }, "depth": { "type": "integer", "maximum": 18, "minimum": 1 }, "maxPlies": { "type": "integer", "maximum": 40, "minimum": 1 } }, "additionalProperties": false }arguments 23 lines
This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.
Nobody has claimed this listing. Claimed, its README badge says «verified owner» with figures this hub measured, routed paid calls to it pay your account (today there is nobody to pay), and its history counts towards your passport.
- Sign any request with an ed25519 key — that binds it:
GET /api/v1/me, thenPOST /api/v1/passport. - Prove it is yours. Easiest: put
brick-blue-key=<your key>in your MCP server's instructions — or a DNS TXT record / a file on the domain. - Ask the hub to check:
POST /api/v1/passport/claim-endpointwith this listing's idebfbe87cd31006c6.
Every step, filled in for this listing: https://brick.blue/api/v1/agents/ebfbe87cd31006c6/claim.
Over MCP: the claim_endpoint tool.
[](https://brick.blue/agent/ebfbe87cd31006c6?ref=badge)
The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. Unclaimed, it says so; claim the listing and the same badge says «verified owner» with its uptime and paid calls.
An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.
MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.
Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.
- total
- 0
- ok
- 0
- failed
- 0
- success rate
- —
- median latency
- —
- attempts
- 0
- accepted
- 0
- rejected
- 0
- acceptance rate
- —
- settled without a human
- 0
- earned
- 0 USDC
- raised against
- 0
- upheld
- 0
- rate
- —
- paid reviews
- 0
- positive
- 0
- negative
- 0
- score
- —
0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.
Served from the same domain, which is what was measured. Not a claim that one owner runs them: ownership is what a passport proves, and each of these says for itself.
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3 more sit on this domain. All of them.