What is jit-redemption-pattern?

A two-step method for converting GBLIN cryptocurrency into USDC when an agent needs to make a USDC payment. It prepares one transaction to redeem GBLIN and another to swap the resulting treasury assets into USDC.

Use it in x402 payment flows when the agent's treasury holds GBLIN but an invoice requires USDC. It supplies transaction data for redemption and swapping, including support for batching both steps in some smart-account setups.

It allows conversion only when an outgoing payment is needed, instead of keeping the treasury fully in USDC. The method includes minimum-output protections and can work with regular wallets and supported smart accounts.

jit-redemption-pattern — Skill by gblinproject

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.

Any agent

npx skills add gblinproject/gblin-treasury-risk-regime --skill jit-redemption-pattern

Clone the repo

git clone --depth 1 https://github.com/gblinproject/gblin-treasury-risk-regime

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/gblinproject/gblin-treasury-risk-regime/jit-redemption-pattern/github.svg)](https://agentmods.dev/skills/gblinproject/gblin-treasury-risk-regime/jit-redemption-pattern)

Your own site

<a href="https://agentmods.dev/skills/gblinproject/gblin-treasury-risk-regime/jit-redemption-pattern"><img src="https://agentmods.dev/badge/skills/gblinproject/gblin-treasury-risk-regime/jit-redemption-pattern/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/gblinproject/gblin-treasury-risk-regime/jit-redemption-pattern"><img src="https://agentmods.dev/badge/skills/gblinproject/gblin-treasury-risk-regime/jit-redemption-pattern.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,522 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00060	$0.01522
Opus 5.5	$0.00024	$0.00609
Sonnet 5.5	$0.00012	$0.00304
Haiku 4.5	$0.00006	$0.00152

Measured 1mo ago against content hash 553c0832a1b3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

jit-redemption-pattern scanned grade A with 1 finding 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 1mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

const response = await fetch(url);

skills/jit-redemption-pattern/SKILL.md · 141 lines

How it starts

The opening of the file, as written. The whole thing — 141 lines — stays where its author put it; the contents beside it link to each section on GitHub.

JIT Redemption Pattern (GBLIN → USDC)

When this skill applies

Trigger when:

The agent's treasury is in GBLIN and needs to pay an outgoing x402 invoice in USDC
The user wants a deterministic, scripted GBLIN → USDC conversion (three transactions, batchable)
The agent is building "lazy treasury" patterns (only convert when needed)

What JIT redemption does

The /api/x402/jit endpoint (MCP tool swap_gblin_to_usdc_jit) returns unsigned calldata for three transactions:

Approve the shares to the GBLIN Zap
GBLINZap.sellGBLINForEth: the Zap redeems the shares in kind on the vault and sells every leg for ETH, all or nothing (a leg that cannot be sold reverts the whole step)
A Uniswap V3 WETH -> USDC swap that spends only the guaranteed ETH minimum of step 2 and still returns at least the requested USDC

Every step carries a non-zero minimum. Compatible with EOA, ERC-4337 Smart Accounts, and EIP-7702 (smart accounts can batch the three steps in one operation). Each step also carries to, data and chainId, so it maps one to one onto wallet batch APIs such as send_calls.

Endpoint

GET https://gblin.digital/api/x402/jit?wallet=<address>&usdc=<amount>

Response (free, no payment):

{
  "action": "sequential_txs",
  "steps": [
    { "step": 1, "target": "0xc2181d975c05c8c724b334bcED0764c0b86B1D53", "calldata": "0x...", "value": "0", "description": "Approve the shares to the GBLIN Zap" },
    { "step": 2, "target": "0x0E9D6Ceb6D313b021622C121Cda9C62e86e60200", "calldata": "0x...", "value": "0", "description": "Redeem in kind and sell every leg for ETH through the Zap (all or nothing)" },
    { "step": 3, "target": "0x2626664c2603336E57B271c5C0b26F421741e481", "calldata": "0x...", "value": "...", "description": "Swap the received ETH to USDC via Uniswap V3 (WETH->USDC)" }
  ],
  "compatibility": { "eoa": true, "erc4337": true, "eip7702": true }
}

When to use JIT redemption

Use when:

You need exactly X USDC and have at least X-equivalent in GBLIN
The payment is happening now (within the next minute)
You want a deterministic scripted redemption (3 txs, or 1 batched UserOp on smart accounts)

Read the full file on GitHub · 141 lines

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.

1mo ago Changed · -1 lines 553c0832a1b3
1mo ago Changed 417ea549042f
1mo ago Changed · +1 lines 8e28f0a06fc4
1mo ago Changed · +1 lines · +1 tokens per session 2a602a5ca1e7
2mo ago First seen · 140 lines · 59 tokens per session scan A 9bf8ec066643

Subscribe to this mod's changes

jit-redemption-pattern is a skill published in the GitHub repository gblinproject/gblin-treasury-risk-regime (1 stars, last pushed 15d ago), licensed MIT. It adds 60 tokens to every session and 1,522 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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