Fantasy Solvers – Balatro Lab
REMOTE · BALATRO.FANTASYSOLVERS.COM
Supported Balatro scoring and exact small-deck play/discard analysis with verified explanations.
Available components
Last scanned (5 hours ago)
Scores higher than 64% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Entertainment and Games
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security77
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability49
- AI-judged instruction clarity (fair).Partial
- Tool/resource definitions use about 346 tokens (~86/item across 4 items; 4 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management73
- Stability observed for 22 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage67
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 4 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.
- 28 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.
- 26 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.
- 24 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.
- 22 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 20 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://balatro.fantasysolvers.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=balatro.fantasysolvers.com | CN=YE2,O=Let's Encrypt,C=US | 14 Oct 2026 | 12 Jan 2027 | ECDSA 256 | ECDSA-SHA384 | 58c9ad5d0542de16d815c4341ea549a8c9d |
| SANs: balatro.fantasysolvers.com | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC secure
Validation of balatro.fantasysolvers.com. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| fantasysolvers.com. | present | 30470 | 8 | Verified |
| balatro.fantasysolvers.com. | Verified address RRset verified with the apex keys |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://balatro.fantasysolvers.com/mcp | Verified | 200 | |
| http (plaintext) | http://balatro.fantasysolvers.com/mcp | HTTPS enforced | 301 | https://balatro.fantasysolvers.com/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
compare_actions ~102
Compare all immediate plays or exact small-deck play/discard values, with the same contract and validation as HTTP. Exact mode limits: 12 draw cards, two hands, two discards. Select explain_actions for particular branches.
| Name | Type | Req | Description |
|---|---|---|---|
| analysis_mode | string | – | – |
| budget_score_calls | integer | – | – |
| contract_version | string | yes | – |
| explain_actions | array | – | – |
| request_id | string | – | – |
| state | object | yes | – |
No output schema declared.
No examples provided.
evaluate_hand ~87
Versioned optimized immediate score from bengine-core. Played and held order is optimized, not evaluated literally. Unsupported effects are rejected.
| Name | Type | Req | Description |
|---|---|---|---|
| contract_version | string | yes | – |
| discards | integer | – | – |
| held | array | – | – |
| jokers | array | – | – |
| levels | object | – | – |
| played | array | yes | – |
| request_id | string | – | – |
No output schema declared.
No examples provided.
get_solver_capabilities ~26
Engine/rules/build identity, contract version, supported effects, assumptions and limits.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
recommend_action ~102
Exact small-deck mathematical action values under optimal continuation in the supported model, not estimated real-game success. Returns all optimal ties and fully reconciled draw explanations; no recommendation on incomplete jobs. No A2/full-deck sampling.
| Name | Type | Req | Description |
|---|---|---|---|
| analysis_mode | string | – | – |
| budget_score_calls | integer | – | – |
| contract_version | string | yes | – |
| explain_actions | array | – | – |
| request_id | string | – | – |
| state | object | yes | – |
No output schema declared.
No examples provided.
How do I install the Fantasy Solvers – Balatro Lab MCP server?
Fantasy Solvers – Balatro Lab is a hosted endpoint at https://balatro.fantasysolvers.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · balatro.fantasysolvers.com
claude mcp add --transport http com-fantasysolvers-balatro-balatro-lab 'https://balatro.fantasysolvers.com/mcp'
What is the Fantasy Solvers – Balatro Lab MCP server?
Fantasy Solvers – Balatro Lab is an MCP server listed in the public MCP registry as com.fantasysolvers.balatro/balatro-lab. Supported Balatro scoring and exact small-deck play/discard analysis with verified explanations. This page covers its hosted endpoint (https://balatro.fantasysolvers.com/mcp).
Is the Fantasy Solvers – Balatro Lab MCP server safe to use?
Fantasy Solvers – Balatro Lab scores 75 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Fantasy Solvers – Balatro Lab MCP server expose?
Fantasy Solvers – Balatro Lab exposes 4 tools: evaluate_hand, recommend_action, compare_actions, get_solver_capabilities. Their descriptions and schemas cost roughly 317 tokens of context every time the server is loaded.
Does the Fantasy Solvers – Balatro Lab MCP server require authentication?
No. We connected to Fantasy Solvers – Balatro Lab without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Fantasy Solvers – Balatro Lab MCP server still maintained?
Fantasy Solvers – Balatro Lab is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.