retry-payment

A payment-retry procedure for failed 3DS transactions, where 3DS is an extra card-payment identity check.

In plain words
What is it for?
Creating idempotency keys, retrying with delayed jittered backoff, logging attempts, and emitting a failure event after three failed attempts.
Why use it?
It retries temporary failures safely and stops after a defined number of attempts instead of risking duplicate charges or endless retries.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/coderadius-ai/coderadius/retry-payment
Any agent
npx skills add coderadius-ai/coderadius --skill retry-payment
Clone the repo
git clone --depth 1 https://github.com/coderadius-ai/coderadius

Made for: Claude Code, Codex.

Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 101 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00019 $0.00101
Opus 5 $0.00010 $0.00051
Sonnet 5 $0.00004 $0.00020
Haiku 4.5 $0.00002 $0.00010

Measured 2d ago against content hash daee82073a05, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

retry-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 2d 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.

tests/fixtures/microservices/order-service/.agents/skills/retry-payment/SKILL.md · 14 lines

What it actually says

Retry Payment

When a payment fails with a retryable error:

  1. Generate an idempotency key from the order ID and attempt number
  2. Apply exponential backoff with jitter (base 500ms, max 30s)
  3. Log each retry attempt with the correlation ID
  4. After 3 failed attempts, emit a payment.failed domain event
Changes

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.

  1. 2d ago First seen · 14 lines · 19 tokens per session scan A daee82073a05

Subscribe to this mod's changes

retry-payment is a skill published in the GitHub repository coderadius-ai/coderadius (24 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 19 tokens to every session and 101 once invoked, about $0.0001 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 2026-08-30.

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