Prediction Market Rule Check MCP
REMOTE · PREDICTION-RULES-MCP.DONNIERTF.WORKERS.DEV
Risk-scores Polymarket/Kalshi settlement rules; Kalshi weather settlements. Not advice.
Available components
Last scanned (1 hour ago)
Scores higher than 43% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Finance and Payments
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 Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 12 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS check failed: the endpoint is reachable over plaintext HTTP. See how to fix → View diagnostics → Fail
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability64
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1429 tokens (~119/item across 12 items; 12 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management23
- Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage94
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 81% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 12 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 13 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities40
- Spec-recency check failed: implements MCP spec 2025-03-26; the latest is 2026-07-28. See how to fix → Fail
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
- Tool “doubles_record” rewrote its description, which is the text the model reads security
- 2 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Oct 26 +1
- Tool “doubles_today” rewrote its description, which is the text the model reads security
- Server version: 1.3.0 → 1.4.0 functional
- “doubles_today” reworded the description of “access_token” cosmetic
- 30 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 29 Oct 26 55
First indexed and scored.
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://prediction-rules-mcp.donniertf.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=donniertf.workers.dev | CN=YE1,O=Let's Encrypt,C=US | 29 Sept 2026 | 28 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 6a1bb006acb01c148e87d8ef3f347e1c41a |
| SANs: *.donniertf.workers.dev, donniertf.workers.dev | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| 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 insecure
Validation of prediction-rules-mcp.donniertf.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
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://prediction-rules-mcp.donniertf.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://prediction-rules-mcp.donniertf.workers.dev/mcp | Served over HTTP | 200 |
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 →
doubles_record ~160
FREE. Sports doubles feed (info only, 18+): the full SETTLED record of Grok Double Bot's daily doubles, every pick including losses, with legs, odds at tip time and result; won/lost/void counts, win rate, average combined odds and running profit on a flat £10 stake, plus pre-kickoff SHA-256 fingerprints of each day's sealed picks (salt + text revealed after they settle; public page /record). Never shows unsettled picks. Information only, not betting advice. No guaranteed returns. 18+. BeGambleAware.org
| Name | Type | Req | Description |
|---|---|---|---|
| limit | number | – | Most recent N settled picks to list (1-500, default all up to 500). Stats always cover the full record. |
No output schema declared.
No examples provided.
doubles_today ~146
PAID $1.00/call (x402 USDC on Base; one call returns the whole day's picks, so $1 a day) or the $15/month doubles plan. Not included in the £12/month plan, bundle passes or trial keys. Sports doubles feed (info only, 18+): today's stats-led doubles from Grok Double Bot with legs, kick-off/start times (UK), odds at tip time, combined odds, confidence and rationale. Information only, not betting advice. No guaranteed returns. 18+. BeGambleAware.org
| Name | Type | Req | Description |
|---|---|---|---|
| access_token | string | – | $15/month doubles plan token from /success (or Authorization: Bearer) |
No output schema declared.
No examples provided.
kalshi_check ~54
PRO. Risk-score a Kalshi market's rules by ticker (rules_primary + rules_secondary).
| Name | Type | Req | Description |
|---|---|---|---|
| access_token | string | – | Subscriber token from /success (or Authorization: Bearer) |
| ticker | string | yes | – |
No output schema declared.
No examples provided.
kalshi_weather_series ~118
FREE. List Kalshi weather series (daily high/low temperature, rain, snow) by city or keyword, with series ticker, frequency and official settlement source. Use the ticker with kalshi_weather_settlements. Information only, not betting advice. Historical settlements do not predict future results. 18+. BeGambleAware.org
| Name | Type | Req | Description |
|---|---|---|---|
| city | string | – | City or keyword, e.g. London, NYC, Chicago |
| kind | string | – | – |
| limit | number | – | default 25, max 100 |
No output schema declared.
No examples provided.
kalshi_weather_settlements ~325
PAID $0.02/call (x402) or subscription / bundle pass. Settled Kalshi weather markets for a series (e.g. KXHIGHNY) or city: per market the ticker, close date, exact close_time (ISO 8601 UTC, Z) and close_time_local (ISO with the city's UTC offset; local_tz IANA zone, null if unknown), settlement_time (Kalshi settlement timestamp, ISO UTC; null if Kalshi gives none) and close_to_settlement_seconds / close_to_settlement_minutes (gap from close to settlement, to spot late settlements or revisions), expiration_time, strike/bucket, yes/no result and settlement payout, plus the observed settlement value per day and the official settlement source. Optional date range. Information only, not betting advice. Historical settlements do not predict future results. 18+. BeGambleAware.org
| Name | Type | Req | Description |
|---|---|---|---|
| access_token | string | – | Subscriber token from /success (or Authorization: Bearer) |
| city | string | – | Alternative to series: city/station keyword (e.g. London, Chicago) |
| from | string | – | Close date from, YYYY-MM-DD |
| kind | string | – | With city: which series type (default high) |
| limit | number | – | Max markets, default 100, max 500 |
| series | string | – | Series ticker, e.g. KXHIGHNY, KXHIGHTEGLL, KXRAINNYC |
| to | string | – | Close date to, YYYY-MM-DD |
No output schema declared.
No examples provided.
live_markets ~113
PAID $0.02/call (x402) or subscription. Live open markets from Polymarket and Kalshi in one schema, ranked by 24h volume within each venue (interleaved). Filter by venue or text.
| Name | Type | Req | Description |
|---|---|---|---|
| access_token | string | – | Subscriber token from /success (or Authorization: Bearer) |
| contains | string | – | Optional text filter on question |
| limit | number | – | 1-100, default 25 |
| venue | string | – | Default all |
No output schema declared.
No examples provided.
market_lookup ~85
FREE. Live price, volume and close time for ONE prediction market in the normalised Polymarket+Kalshi schema. Give a Polymarket slug or a Kalshi ticker.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | Polymarket market slug (e.g. will-x-happen) or Kalshi market ticker (e.g. KXFEDDECISION-26DEC-H0) |
No output schema declared.
No examples provided.
rule_check ~57
FREE. Risk-score the settlement rules of a Polymarket market (slug or search words): flags discretion, vague sources, cancellation and deadline traps. Top 2 markets.
| Name | Type | Req | Description |
|---|---|---|---|
| market | string | yes | Polymarket slug or search words |
No output schema declared.
No examples provided.
rule_check_full ~61
PRO. Full rule text + resolution source + all flags for up to 10 Polymarket markets matching a slug or search.
| Name | Type | Req | Description |
|---|---|---|---|
| access_token | string | – | Subscriber token from /success (or Authorization: Bearer) |
| market | string | yes | – |
No output schema declared.
No examples provided.
scan_risky ~67
PRO. Scan the top live Polymarket markets by volume and list the ones with the riskiest settlement wording.
| Name | Type | Req | Description |
|---|---|---|---|
| access_token | string | – | Subscriber token from /success (or Authorization: Bearer) |
| limit | number | – | – |
| min_score | number | – | – |
No output schema declared.
No examples provided.
search_markets ~106
PAID $0.02/call (x402) or subscription. Keyword search across live Polymarket and Kalshi markets (e.g. 'fed rate', 'bitcoin', 'election'); normalised prices and volumes.
| Name | Type | Req | Description |
|---|---|---|---|
| access_token | string | – | Subscriber token from /success (or Authorization: Bearer) |
| limit | number | – | 1-50, default 20 |
| query | string | yes | – |
| venue | string | – | Default all |
No output schema declared.
No examples provided.
top_movers ~89
PAID $0.02/call (x402) or subscription. Live markets with the biggest 24h price moves on Polymarket and Kalshi, in one schema.
| Name | Type | Req | Description |
|---|---|---|---|
| access_token | string | – | Subscriber token from /success (or Authorization: Bearer) |
| limit | number | – | 1-50, default 15 |
| venue | string | – | Default all |
No output schema declared.
No examples provided.
How do I install the Prediction Market Rule Check MCP server?
Prediction Market Rule Check MCP is a hosted endpoint at https://prediction-rules-mcp.donniertf.workers.dev/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 · prediction-rules-mcp.donniertf.workers.dev
claude mcp add --transport http donniertf-hub-prediction-rules-mcp 'https://prediction-rules-mcp.donniertf.workers.dev/mcp'
What is the Prediction Market Rule Check MCP server?
Prediction Market Rule Check MCP is listed in the public MCP registry as io.github.donniertf-hub/prediction-rules-mcp. Risk-scores Polymarket/Kalshi settlement rules; Kalshi weather settlements. Not advice. This page covers its hosted endpoint (https://prediction-rules-mcp.donniertf.workers.dev/mcp).
Is the Prediction Market Rule Check MCP server safe to use?
Prediction Market Rule Check MCP scores 58 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 Prediction Market Rule Check MCP server expose?
Prediction Market Rule Check MCP exposes 12 tools: rule_check, rule_check_full, kalshi_check, scan_risky, market_lookup, and 7 more. Their descriptions and schemas cost roughly 1,381 tokens of context every time the server is loaded.
Does the Prediction Market Rule Check MCP server require authentication?
No. We connected to Prediction Market Rule Check MCP without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Prediction Market Rule Check MCP server still maintained?
Prediction Market Rule Check MCP 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.