Poland Payments (Stripe — BLIK)
Server Details
Poland payments for AI agents — BLIK via Stripe. Never holds funds.
- Status
- Unhealthy
- Last Tested
- Transport
- Streamable HTTP
- URL
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Tool Definition Quality
Average 4.5/5 across 3 of 3 tools scored.
The three tools are completely distinct: create payment link, check status, and refund. No overlap in purpose or operation.
All tools follow a consistent verb_noun pattern using snake_case (create_payment_link, query_payment_status, refund_payment), maintaining clarity.
Three is an ideal number for a focused payment service—covers create, status, and refund without unnecessary complexity.
Core payment lifecycle (create, check, refund) is covered. Missing potential features like webhook registration but not essential for basic use.
Available Tools
6 toolscancel_subscriptionADestructiveIdempotentInspect
Cancel a subscription. By default the subscription stays active until the end of the current paid period (fair to the buyer); pass immediate=true to cancel right now.
| Name | Required | Description | Default |
|---|---|---|---|
| id | Yes | session_id (cs_...) or subscription_id (sub_...) | |
| immediate | No | true = cancel immediately. Default false = cancel at period end. |
Tool Definition Quality
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations indicate destructiveHint=true and idempotentHint=true. Description adds behavioral nuance: default is fair to buyer (cancel at period end), immediate cancels now. No contradiction.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences with no redundancy. Front-loads the main action, then explains parameter variations efficiently.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
No output schema, but tool is simple and annotations cover safety. Description provides sufficient context for a cancellation action, though return value is not mentioned.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema covers both parameters (100%). Description adds value by clarifying that 'id' can be session_id or subscription_id, and reaffirming the default for immediate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Clearly states the verb 'Cancel' and resource 'subscription'. Distinguishes from siblings like query_subscription and refund_payment by focusing on cancellation.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Describes default behavior (cancel at period end) and alternative (immediate=true). Provides context for when to use each parameter, though no explicit when-not-to-use.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
create_payment_linkAInspect
Create a payment link in PLN for Poland via Stripe (Checkout Sessions). Buyer pays with BLIK (the rail Polish buyers actually use), Przelewy24, cards — whatever is enabled on the Stripe account. Returns a hosted checkout URL the buyer opens to pay — payment completes automatically, no confirm step. Bring your own credentials via HTTP header (x-stripe-secret-key; free test credentials from dashboard.stripe.com never move real money). Money always flows buyer→Stripe→merchant; this service never touches funds. Optional: issue_invoice=true auto-creates a VAT-ready invoice (PDF + hosted page, emailed to the buyer) after payment; collect_tax_id=true collects the buyer's business tax ID (e.g. EU VAT number) at checkout and puts it on the invoice.
| Name | Required | Description | Default |
|---|---|---|---|
| amount_pln | Yes | Amount in PLN (decimals allowed), e.g. 20. Minimum 2. | |
| description | Yes | What this payment is for (shown to the buyer, ≤200 chars) | |
| success_url | No | Optional https URL to send the buyer to after payment. | |
| issue_invoice | No | true = Stripe automatically creates and emails a post-payment invoice (PDF + hosted invoice page). Ideal for B2B / VAT bookkeeping. Note: Stripe charges a small Invoicing fee per invoice issued. | |
| collect_tax_id | No | true = ask the buyer for their business tax ID (e.g. EU VAT number) on the checkout page; it appears on the invoice. Combine with issue_invoice for a VAT-compliant receipt. | |
| customer_email | No | Optional buyer email. |
Tool Definition Quality
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Provides extensive behavioral details beyond annotations: payment methods, automatic completion, credential handling, funds flow, and optional invoice/tax ID features. No contradictions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two well-structured sentences front-loaded with purpose, every sentence adds value; no redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Covers return value, behavior, optional features, and credential requirements; no gaps given annotations and schema.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% (baseline 3). Description adds context like Stripe fees for invoices and how collect_tax_id pairs with issue_invoice, enhancing meaning.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool creates a payment link in PLN for Poland via Stripe Checkout Sessions, distinguishing it from siblings by specifying currency and region.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description clearly indicates when to use (for one-time payments in Poland with PLN) but does not explicitly state when not to use or compare to siblings.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
create_subscription_linkAInspect
Create a recurring subscription checkout link (monthly/yearly/weekly billing) via Stripe. The buyer opens the URL, enters their card once, and is then charged automatically every period until canceled. Amount is per billing period in the local currency major unit. Respects the same owner policy guardrails as payments (the per-period amount is checked before anything is created).
| Name | Required | Description | Default |
|---|---|---|---|
| interval | No | Billing period. Default "month". | |
| amount_pln | Yes | Amount charged per billing period (local currency major unit) | |
| description | Yes | What the subscription is for (shown to the buyer, <=200 chars) | |
| success_url | No | Optional https URL to send the buyer to after subscribing. | |
| customer_email | No | Optional buyer email (pre-filled at checkout; receipt goes there). |
Tool Definition Quality
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description adds significant behavioral context beyond annotations: it explains the recurring charge mechanism, buyer interaction, and guardrails (owner policy checks). Annotations only indicate openWorldHint; description compensates fully.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Three sentences, front-loaded with core action and no wasted words. Every sentence adds value: purpose, behavior, and guardrails.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Covers key aspects: purpose, behavior, billing, guardrails. Missing explicit mention of return value (the link URL) and subscription start timing, but these are inferable. Adequate for complexity.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so baseline is 3. The description adds minimal parameter-specific detail—only hinting at interval types and amount unit—but does not substantially enhance understanding beyond schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool creates a 'recurring subscription checkout link' via Stripe, using specific verb and resource. It distinguishes from siblings like 'create_payment_link' (one-time) and 'cancel_subscription' by emphasizing recurring billing and subscription nature.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage for recurring subscriptions but does not explicitly state when to use this tool versus alternatives like create_payment_link or cancel_subscription. No 'when to use' or 'when not to use' guidance is provided.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
query_payment_statusARead-onlyInspect
Check whether a Poland payment (created by create_payment_link) has been paid. Queries Stripe directly — pull-based, no webhook needed. paid=true when status is PAID. If the payment was created with issue_invoice=true, the result also includes invoice_url and invoice_pdf once paid.
| Name | Required | Description | Default |
|---|---|---|---|
| session_id | Yes | The session_id returned by create_payment_link |
Tool Definition Quality
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint and openWorldHint, and the description adds behavioral details: it queries Stripe directly, is pull-based, and conditionally returns invoice URLs. No contradictions found.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is three terse sentences, front-loading the purpose and adding key behavioral details without waste.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Lacking an output schema, the description explains the main output fields (paid, invoice_url, invoice_pdf) and their conditions. It doesn't cover error states or edge cases, but for a simple status check this is adequate.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema covers 100% of parameters with descriptions. The description adds context that session_id comes from create_payment_link, which aids understanding beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it checks payment status for Poland payments created by create_payment_link, specifying the paid condition and additional invoice fields. It uses a specific verb and resource, distinguishing it from siblings like create_payment_link or refund_payment.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description mentions it's pull-based and requires no webhook, guiding the agent on when to use it. It implicitly restricts use to Poland payments from create_payment_link, but doesn't explicitly list alternatives or state when not to use it, leaving some ambiguity.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
query_subscriptionARead-onlyInspect
Check a subscription created by create_subscription_link. Accepts the session_id (cs_...) or subscription_id (sub_...). active=true when the subscription is ACTIVE or TRIALING; NOT_SUBSCRIBED_YET means the buyer has not completed checkout.
| Name | Required | Description | Default |
|---|---|---|---|
| id | Yes | session_id (cs_...) returned by create_subscription_link, or subscription_id (sub_...) |
Tool Definition Quality
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, so no contradiction. Description adds meaning of active=true and NOT_SUBSCRIBED_YET, providing useful behavioral context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences, minimal and efficient. Front-loaded with core purpose, then adds necessary detail.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
No output schema, but description explains key return values (active, NOT_SUBSCRIBED_YET). Provides sufficient context for a simple read-only status check.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema already describes the single parameter with examples. Description adds meaning of the return statuses (active, NOT_SUBSCRIBED_YET), enhancing understanding beyond schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states it checks subscription status, specifies accepted ID types (cs_..., sub_...), and distinguishes itself from creating subscriptions.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly says to check subscriptions created by create_subscription_link and explains status values, but doesn't contrast with siblings like cancel_subscription or query_payment_status.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
refund_paymentADestructiveInspect
Refund a paid payment (created by create_payment_link). Full refund by default; pass amount for a partial refund where supported. Refunds respect the same owner policy guardrails (x-agentpay-max-amount) as payments — the amount is checked before anything is sent to the gateway.
| Name | Required | Description | Default |
|---|---|---|---|
| amount | No | Optional partial-refund amount in the local currency major unit. Omit for a full refund. | |
| session_id | Yes | The session_id of the paid payment (same id used by query_payment_status) |
Tool Definition Quality
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Beyond annotations (destructive true), the description adds useful behavioral details: full vs partial refund, gateway dependence, and amount checking policy.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two focused sentences, front-loaded with purpose, no wasted words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
No output schema, and description does not mention return value or prerequisites (e.g., payment must be in paid state), leaving some gaps for an agent.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
With 100% schema coverage, baseline is 3; description adds clarifying context for both parameters (omit amount for full refund, session_id shared with query_payment_status).
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool refunds a paid payment created by create_payment_link, with a specific verb and resource, distinguishing it from the sibling tools.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides guidance on when to use (refund payments from create_payment_link) and mentions policy guardrails, but does not explicitly state when not to use or name alternatives beyond the siblings.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
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