Decide Policy Notaries
REMOTE · POLICY.DECIDE.FYI
Fail-closed refund, cancellation, return, and trial checks for 100 US subscription vendors.
Available components
Last scanned (21 hours ago)
Scores higher than 94% of remote servers
Reachable. Last reached 16 Oct 2026.
Category E-commerce
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 Security83
- 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
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- 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 Usability67
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 727 tokens (~181/item across 4 items; 4 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 Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "refund_eligibility" implies "refund" and declares readOnlyHint instead, contradicting what its own name says it does. See how to fix → Fail
- 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.
- 6 Oct 26 0
- Tool “cancellation_penalty” rewrote its description, which is the text the model reads security
- Schema quality: excellent → good functional
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 7 Sept 26 0
- Tool “cancellation_penalty” rewrote its description, which is the text the model reads security
- Schema quality: 149 → 175 ▼ functional
- “cancellation_penalty” added an optional parameter “contract_type” cosmetic
- “cancellation_penalty” added an optional parameter “product” cosmetic
- “cancellation_penalty” added an optional parameter “purchase_channel” cosmetic
- “cancellation_penalty” added an optional parameter “requested_action” cosmetic
- “cancellation_penalty” reworded the description of “plan” cosmetic
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 0
- Stability: 0.97 → pass security
- 11 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 31 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
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 16 Oct 2026 · Probed https://policy.decide.fyi/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=decide.fyi | CN=WE1,O=Google Trust Services,C=US | 2 Sept 2026 | 1 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 9e5fd9fd1bfcf2af13be914ad4e2c678 |
| SANs: decide.fyi, *.decide.fyi | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC secure
Validation of policy.decide.fyi. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| fyi. | present | 24340 | 8 | Verified |
| decide.fyi. | present | 2371 | 13 | Verified |
| policy.decide.fyi. | 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 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=63072000 |
| content-security-policy | default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://cdn.jsdelivr.net https://*.clerk.dev https://*.clerk.com https://*.vercel.app https://challenges.cloudflare.com; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com data:; img-src 'self' data: https: blob:; connect-src 'self' https://*.clerk.dev https://*.clerk.com https://clerk.decide.fyi https://accounts.decide.fyi https://generativelanguage.googleapis.com; frame-src 'self' https://*.clerk.dev https://*.clerk.com https://challenges.cloudflare.com; frame-ancestors 'none'; base-uri 'self'; form-action 'self'; |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | geolocation=(), microphone=(), camera=(), payment=(), usb=(), magnetometer=(), gyroscope=(), accelerometer=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://policy.decide.fyi/api/mcp | Verified | 200 | |
| http (plaintext) | http://policy.decide.fyi/api/mcp | HTTPS enforced | 308 | https://policy.decide.fyi/api/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 →
cancellation_penalty Check cancellation penalty ~238
Check US subscription cancellation terms without executing cancellation. Known vendors include review-only and retired scopes: their presence is not automation support. Adobe requires manual contract review. Typeform requires Basic, direct/self-serve platform scope and returns CANCEL_AT_PERIOD_END, not an immediate cancellation or refund. Missing scope, retired sources or unavailable current evidence return UNKNOWN.
| Name | Type | Req | Description |
|---|---|---|---|
| billing_cadence | string | – | Required when the vendor applies different cancellation terms to monthly and annual plans. |
| contract_type | string | – | Required for Typeform. Custom and enterprise contracts are not covered. |
| plan | string | yes | Use 'basic' for Typeform; 'individual' for other supported vendors. |
| product | string | – | Required for Typeform. Excludes payments collected from form respondents. |
| purchase_channel | string | – | Required for Typeform. Third-party purchases are not covered. |
| region | string | yes | Region code. Currently only 'US' is supported. |
| requested_action | string | – | Required for Typeform. Checks ending renewal at the paid term end; does not execute it. |
| vendor | string | yes | Vendor identifier (lowercase, underscore-separated). |
| Name | Type | Req | Description |
|---|---|---|---|
| automation_safe | boolean | – | – |
| billing_cadence | string|null | – | – |
| cancellation_confirmed | boolean | – | – |
| cancellation_effective | string | – | – |
| code | string | yes | – |
| evaluated_at | string | – | – |
| execution_performed | boolean | – | – |
| message | string | yes | – |
| notice_days | number | – | – |
| penalty | string | – | – |
| policy | string | – | – |
| policy_evidence | object | – | – |
| policy_last_checked | string | – | – |
| policy_last_verified_utc | string|null | – | – |
| policy_source_notes | string | – | – |
| policy_source_url | string | – | – |
| policy_version | string | – | – |
| refund | string | – | – |
| required_context | array | – | – |
| rulebook_result | object | – | – |
| rules_version | string | – | – |
| source_hash | string | – | – |
| vendor | string | – | – |
| verdict | string | yes | – |
No examples provided.
refund_eligibility Check refund eligibility ~138
Evaluate a US consumer subscription refund against versioned source-backed rules. Returns UNKNOWN when required conditions are absent or the vendor requires approval or manual policy review.
| Name | Type | Req | Description |
|---|---|---|---|
| days_since_purchase | number | yes | Number of days since the subscription was purchased. |
| plan | string | yes | Plan type. Currently only 'individual' plans are supported. |
| qualifying_conditions_met | boolean | – | Required when the vendor policy has source-specific conditions such as first purchase, unused benefits, or an eligible annual plan. |
| region | string | yes | Region code. Currently only 'US' is supported. |
| vendor | string | yes | Vendor identifier (lowercase, underscore-separated). |
| Name | Type | Req | Description |
|---|---|---|---|
| automation_safe | boolean | – | – |
| code | string | yes | – |
| days_since_purchase | number | – | – |
| evaluated_at | string | – | – |
| message | string | yes | – |
| policy_evidence | object | – | – |
| policy_last_checked | string | – | – |
| policy_last_verified_utc | string|null | – | – |
| policy_source_notes | string | – | – |
| policy_source_url | string | – | – |
| policy_version | string | – | – |
| refundable | boolean|null | – | – |
| required_context | array | – | – |
| rulebook_result | object | – | – |
| rules_version | string | – | – |
| source_hash | string | – | – |
| vendor | string | – | – |
| verdict | string | yes | – |
| window_days | number | – | – |
No examples provided.
return_eligibility Check return eligibility ~138
Evaluate whether a US consumer subscription purchase can be reversed under versioned source-backed rules. Returns UNKNOWN when required conditions are absent or manual review is required.
| Name | Type | Req | Description |
|---|---|---|---|
| days_since_purchase | number | yes | Number of days since the subscription was purchased. |
| plan | string | yes | Plan type. Currently only 'individual' plans are supported. |
| qualifying_conditions_met | boolean | – | Required when the vendor policy has source-specific conditions such as first purchase, unused benefits, or an eligible annual plan. |
| region | string | yes | Region code. Currently only 'US' is supported. |
| vendor | string | yes | Vendor identifier (lowercase, underscore-separated). |
| Name | Type | Req | Description |
|---|---|---|---|
| automation_safe | boolean | – | – |
| code | string | yes | – |
| days_since_purchase | number | – | – |
| evaluated_at | string | – | – |
| message | string | yes | – |
| method | string | – | – |
| policy_evidence | object | – | – |
| policy_last_checked | string | – | – |
| policy_last_verified_utc | string|null | – | – |
| policy_source_notes | string | – | – |
| policy_source_url | string | – | – |
| policy_version | string | – | – |
| required_context | array | – | – |
| return_type | string | – | – |
| return_window_days | number | – | – |
| returnable | boolean|null | – | – |
| rulebook_result | object | – | – |
| rules_version | string | – | – |
| source_hash | string | – | – |
| vendor | string | – | – |
| verdict | string | yes | – |
No examples provided.
trial_terms Check trial terms ~192
Evaluate a live US consumer subscription trial offer. Supply observed availability, duration, card, and auto-conversion facts; the tool returns UNKNOWN instead of inferring current offers from static data.
| Name | Type | Req | Description |
|---|---|---|---|
| observed_auto_converts | boolean | – | Whether the confirmed live offer converts to a paid subscription after the trial. |
| observed_card_required | boolean | – | Whether the confirmed live offer requires a payment card. |
| observed_trial_days | integer | – | Trial duration shown by the confirmed live offer. Required when offer_confirmed is true for a variable offer. |
| offer_confirmed | boolean | – | For account- or promotion-specific trials, whether a live offer has been confirmed for this account. |
| plan | string | yes | Plan type. Currently only 'individual' plans are supported. |
| region | string | yes | Region code. Currently only 'US' is supported. |
| vendor | string | yes | Vendor identifier (lowercase, underscore-separated). |
| Name | Type | Req | Description |
|---|---|---|---|
| auto_converts | boolean | – | – |
| automation_safe | boolean | – | – |
| card_required | boolean | – | – |
| code | string | yes | – |
| evaluated_at | string | – | – |
| message | string | yes | – |
| policy_evidence | object | – | – |
| policy_last_checked | string | – | – |
| policy_last_verified_utc | string|null | – | – |
| policy_source_notes | string | – | – |
| policy_source_url | string | – | – |
| policy_version | string | – | – |
| required_context | array | – | – |
| rulebook_result | object | – | – |
| rules_version | string | – | – |
| source_hash | string | – | – |
| trial_available | boolean | – | – |
| trial_days | integer | – | – |
| vendor | string | – | – |
| verdict | string | yes | – |
No examples provided.
How do I install the Decide Policy Notaries MCP server?
Decide Policy Notaries is a hosted endpoint at https://policy.decide.fyi/api/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 · policy.decide.fyi
claude mcp add --transport http decidefyi-policy-notaries 'https://policy.decide.fyi/api/mcp'
What is the Decide Policy Notaries MCP server?
Decide Policy Notaries is an MCP server listed in the public MCP registry as io.github.decidefyi/policy-notaries. Fail-closed refund, cancellation, return, and trial checks for 100 US subscription vendors. This page covers its hosted endpoint (https://policy.decide.fyi/api/mcp).
Is the Decide Policy Notaries MCP server safe to use?
Decide Policy Notaries scores 86 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 Decide Policy Notaries MCP server expose?
Decide Policy Notaries exposes 4 tools: refund_eligibility, cancellation_penalty, return_eligibility, trial_terms. Their descriptions and schemas cost roughly 706 tokens of context every time the server is loaded.
Does the Decide Policy Notaries MCP server require authentication?
No. We connected to Decide Policy Notaries without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Decide Policy Notaries MCP server still maintained?
Decide Policy Notaries is still listed as active in the MCP registry. We last reached this channel on 16 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.