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 Lord1Egypt/awesome-skill-forge --skill a2a-paymentsgit clone --depth 1 https://github.com/Lord1Egypt/awesome-skill-forgeWrote 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/lord1egypt/awesome-skill-forge/a2a-payments)<a href="https://agentmods.dev/skills/lord1egypt/awesome-skill-forge/a2a-payments"><img src="https://agentmods.dev/badge/skills/lord1egypt/awesome-skill-forge/a2a-payments/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/lord1egypt/awesome-skill-forge/a2a-payments"><img src="https://agentmods.dev/badge/skills/lord1egypt/awesome-skill-forge/a2a-payments.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 | $0.00030 | $0.00716 |
| Opus 5 | $0.00015 | $0.00358 |
| Sonnet 5 | $0.00006 | $0.00143 |
| Haiku 4.5 | $0.00003 | $0.00072 |
Grade A, and why
a2a-payments 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 — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.
A2A Payments (APay)
Blockchain-native USDC payments for AI agents on Base chain. Pay for services, manage budgets, and handle micropayments.
Quick Start
Check your balance:
Use apay_check_balance to see my USDC balance
Pay a service:
Use apay_pay_service with serviceId "svc-123" and amount "0.50"
Available Tools
Balance & Budget
| Tool | Description |
|---|---|
apay_check_balance |
Check USDC balance, daily budget, spending limits |
apay_budget_check |
Verify if a specific amount is affordable |
apay_spending_history |
Get spending analytics and history |
Payments
| Tool | Description |
|---|---|
apay_pay_service |
Pay a service (agent pays gas) |
apay_pay_signed |
Gasless signed payment (server submits on-chain) |
apay_estimate_cost |
Estimate cost including 0.5% platform fee |
Services
| Tool | Description |
|---|---|
apay_list_services |
List available APay services |
apay_get_service |
Get detailed service info |
Payment Channels (Streaming)
| Tool | Description |
|---|---|
apay_channel_status |
Check channel status |
apay_stream_open |
Open channel with USDC deposit |
apay_stream_pay |
Sign off-chain micropayment |
apay_stream_close |
Close channel (refund unspent) |
x402 Protocol
| Tool | Description |
|---|---|
apay_x402_fetch |
Fetch URL with automatic x402 payment on HTTP 402 |
Workflows
Pay for a tool execution
apay_budget_check— verify affordabilityapay_estimate_cost— see total with feesapay_pay_service— execute payment- Receive payment receipt with tx hash
Streaming micropayments
For services that charge per-request (API calls, data feeds):
apay_stream_open— deposit USDC into channelapay_stream_pay— sign micropayments (off-chain, instant)apay_stream_close— settle on-chain, refund remainder
x402 auto-payment
For services using the HTTP 402 payment protocol:
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 · 114 lines · 30 tokens per session scan A 89615373da79
a2a-payments is a skill published in the GitHub repository Lord1Egypt/awesome-skill-forge (2 stars, last pushed 3mo ago), licensed MIT. It adds 30 tokens to every session and 716 once invoked, about $0.0002 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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