Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add apideck-libraries/api-skills --skill apideck-mcp-receive-paymentgit clone --depth 1 https://github.com/apideck-libraries/api-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/apideck-libraries/api-skills/apideck-mcp-receive-payment)<a href="https://agentmods.dev/skills/apideck-libraries/api-skills/apideck-mcp-receive-payment"><img src="https://agentmods.dev/badge/skills/apideck-libraries/api-skills/apideck-mcp-receive-payment/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/apideck-libraries/api-skills/apideck-mcp-receive-payment"><img src="https://agentmods.dev/badge/skills/apideck-libraries/api-skills/apideck-mcp-receive-payment.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00095 | $0.01542 |
| Opus 5 | $0.00048 | $0.00771 |
| Sonnet 5 | $0.00019 | $0.00308 |
| Haiku 4.5 | $0.00010 | $0.00154 |
Grade A, and why
apideck-mcp-receive-payment scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Receive a customer payment (Apideck MCP)
When the user wants to record a payment against an existing invoice, prefer apideck-receive-customer-payment over stitching accounting-invoices-get + accounting-payments-create manually. The workflow tool fetches the invoice, reads its outstanding balance, builds the right allocation with type: "invoice", and surfaces structured errors with failingStep.
When this is the right tool
| User intent | Tool |
|---|---|
| "Customer paid invoice 4", "Apply $500 to invoice 12 from ACME", "Record receipt for invoice 99" | apideck-receive-customer-payment ✓ |
| "Pay vendor bill X" | apideck-pay-bill (AP — accounts payable, different unified endpoint) |
| "Create an unallocated customer prepayment" | accounting-payments-create directly (no allocation) |
| "Show me unpaid invoices" | accounting-invoices-list with filter[status]=open |
IMPORTANT RULES
- CONFIRM before calling. Receive-payment is mutating and not idempotent — calling twice creates two payments on the connected service. Always show the user the invoice total, currency, deposit account, and customer, and wait for explicit confirmation before invoking.
- PASS
payment_methodcapitalized for QuickBooks:"Check","CreditCard","Cash". Lower-case fails JSON parsing. Other connectors accept lower-case ("check","ach","wire"). - OMIT
amountto settle the full outstanding balance. The workflow defaults to the invoice'sbalance(outstanding), not the grosstotal, so partial-paid invoices don't get over-settled. Only passamountwhen the user explicitly wants a partial payment. - DON'T confuse with
apideck-pay-bill. Customer payments (someone owes you) →apideck-receive-customer-payment→accounting-payments-create. Vendor bills (you owe someone) →apideck-pay-bill→accounting-bill-payments-create. The unified APIs split AR and AP into separate endpoints; the wrong one will be rejected by the connector with confusing error messages (e.g. QuickBooks:VendorRef missingwhen there's a customer on the other side). - SET
x-apideck-service-idwhen the consumer has multiple accounting connections.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago First seen · 115 lines · 95 tokens per session scan A 3c6a575bfac0
apideck-mcp-receive-payment is a skill published in the GitHub repository apideck-libraries/api-skills (3 stars, last pushed 13d ago), licensed Apache-2.0. It adds 95 tokens to every session and 1,542 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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