Atlas entry
mcp.
5 capabilities over MCP. First atlas observation.
5 capabilities, 4 of them tools. 4 have no reading.◇
AI reading, beta. Purpose lines paraphrase observed tool definitions using tool-purpose-v1. No tool was called.
AI readings summary · beta
chess_analyse: Returns an engine's top move candidates for a chess board, plus its material and check status and what a proposed move allows.
chess_attacks: Returns the squares a chess piece attacks from a given square, plus its type and colour, for a position given as FEN, PGN or moves.
chess_review: Returns the blunders in a finished chess game, flagging moves that swung the engine evaluation past a set threshold.
Written by code from the AI readings on this page: it groups them and says nothing they do not.
What an agent can do here
AI readings, beta
Moves money
0
No tool read this way.
Deletes or cancels records
0
No tool read this way.
Sends messages to people
0
No tool read this way.
Changes permissions
0
No tool read this way.
Runs code
0
No tool read this way.
Should ask a person first
0
No tool read this way.
No counted reading 4 tools No reading was counted, so any effect above is possible for them: chess_analyse, chess_attacks, chess_review, chess_rig.
What changed
First atlas observation. Atlas history
Look first
AI reading, beta: AI adds items here; it never removes one.
No tool is read as one of the six effects. A zero is a count, not a clearance.
Surfaces
5 protocols checked
| ARD | Not found | No document retrieved |
|---|---|---|
| A2A | Not found | 0 skills |
| MCP | Valid | 2025-06-18 · 4 tools · resources not advertised · 1 prompt |
| OpenAPI | Not detected | 0 operations |
| WebMCP | Not detected | 0 declarative form tools · experimental |
Exact states and meaning
- ARDabsent
Exact state: not found · No document retrieved
The supported discovery location returned no matching document.
Not found does not prove the service exposes no such interface elsewhere.
Not observed / not fetched
- A2Aabsent
Exact state: not found · 0 skills
The supported discovery location returned no matching document.
Not found does not prove the service exposes no such interface elsewhere.
Not observed / not fetched
- MCPobserved
Exact state: valid · Revision 2025-06-18 · 4 tools · resources not advertised · 1 prompt
A usable protocol document was retrieved and validated.
Directly observed
- OpenAPIabsent
Exact state: not detected · 0 operations
No endpoint was established from the evidence and scope that InterfaceDelta inspected.
Not detected does not prove that no endpoint exists.
Not observed / not fetched
- WebMCPabsent
Exact state: not detected · 0 declarative form tools · experimental
No named declarative WebMCP form tools were observed in the origin root HTML.
Script-registered tools and other pages are not observed, so this does not mean the site has no WebMCP tools.
Not observed / not fetched
Capabilities
Showing 5 of 5.
| Tool and inputs | ◇ AI reading, beta · confidence | ||||||
|---|---|---|---|---|---|---|---|
| No counted reading 4 No reading was counted, so any effect is possible. | |||||||
| Returns an engine's top move candidates for a chess board, plus its material and check status and what a proposed move allows.considering, fen, moves, multipv and 2 more | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| Returns the squares a chess piece attacks from a given square, plus its type and colour, for a position given as FEN, PGN or moves.fen, moves, pgn, square* | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| Returns the blunders in a finished chess game, flagging moves that swung the engine evaluation past a set threshold.colour, moves, pgn, threshold | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| no inputs | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| MCP prompts 1 Not read by AI. | |||||||
| no inputs | Not read | ||||||
| |||||||
Read as this effect No reading: unknown Not read as this effect◇ AI readings, beta. A zero is a count, not a clearance.
Not observed in this Passport: A2A skills, MCP resources, OpenAPI operations.
The atlas shows each capability by its plain identifier, inputs and declared sign-in. Publisher descriptions, paths, links and source evidence are not published here.
The comparison with the previous observation is shown only to the account that recorded it.
Atlas history
1 observation
- 5 capabilities · MCP 2025-06-18 · MCP endpoint validFirst observation
Fingerprint and versions
- Fingerprint
4f0b7af54151c48e1054e8160edaa7adc65781d7a593e05bc9d9889688eede72- Passport schema
- 0.5.0, passport-semantic-v4
- Consistency
- MCP_PROMPTS_ADVERTISEMENT_LIST: match · MCP_RESOURCES_ADVERTISEMENT_LIST: not applicable · MCP_TOOLS_ADVERTISEMENT_LIST: match · OPENAPI_MCP_EXPLICIT_MAPPING: not applicable
Each class compares an observation with the previous atlas observation. Runs of unchanged observations are grouped. Struck values are what the previous observation recorded; inserted values are what this one recorded.
Declared and observed
4 tools declare hints; the AI readings agree with all 0 that have a reading.
A disagreement is not a finding about the service: either side can be wrong. How we compare declarations and readings.
About this entry
co.betterchess/betterchessListedOfficial MCP Registry · first listed 16 Sep 2026 · last listed 31 Oct 2026
Passive observations of a public interface listed in the Official MCP Registry. An observation does not verify security, ownership or compliance, and InterfaceDelta assigns no scores or rankings. Methodology · Report an inaccuracy · Ask for removal
Identity and snapshot
- Target key
sha256:bd4050a0d7f112b4acaf3361176650046030cdde918b662c2c165363511f4a79- Locator SHA-256
ee182ae84acccc95cd329b8d5db6ad736e164777ce9aa794d64d6a8a26e30fe2- Snapshot generated
- 13 Nov 2026, 01:06 UTC
The entry is one exact observed target, not a real-world service identity, and implies no ownership. Endpoint paths are not published; the locator hash lets an operator confirm their own URL.