What is razor-dvara CLAUDE.md?

A repository instruction file for Razor Dvara, a checkout-control layer for cash-on-delivery commerce using Shopify and Razorpay test APIs. It describes the policy engine, edge cache, Shopify function, evaluations, and coding conventions.

Use it when developing, reviewing, or testing Razor Dvara’s checkout gates, delivery checks, Shopify integration, audit trail, or evaluation tools.

It keeps payment decisions consistent and auditable by documenting requirements such as integer currency values, reason codes, rule IDs, idempotency keys, and append-only records.

How Utkarsh-Sinha0/razor-dvara configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to Utkarsh-Sinha0/razor-dvara. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/Utkarsh-Sinha0/razor-dvara/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/Utkarsh-Sinha0/razor-dvara

Made for: Claude Code.

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/instructions/utkarsh-sinha0/razor-dvara/claude-md/github.svg)](https://agentmods.dev/instructions/utkarsh-sinha0/razor-dvara/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/utkarsh-sinha0/razor-dvara/claude-md"><img src="https://agentmods.dev/badge/instructions/utkarsh-sinha0/razor-dvara/claude-md/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/instructions/utkarsh-sinha0/razor-dvara/claude-md"><img src="https://agentmods.dev/badge/instructions/utkarsh-sinha0/razor-dvara/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 490 This file is loaded in full into every session.

When invoked 490 The same file — it is already loaded in full.

Security scan A 0 findings. 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	$0.00490	$0.00490
Opus 5	$0.00245	$0.00245
Sonnet 5	$0.00098	$0.00098
Haiku 4.5	$0.00049	$0.00049

Measured 8d ago against content hash 92a3b44bc8fa, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

razor-dvara CLAUDE.md 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 8d 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.

CLAUDE.md · 52 lines

How it starts

The opening of the file, as written. The whole thing — 52 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Razor Dvara

What this repo is

A gated checkout-control layer for COD commerce on Shopify + Razorpay test-mode APIs. Five MCP tools expose merchant-configurable COD policies as agent-readable APIs. Every money action returns a reason code, a rule ID, and an append-only audit entry.

How the code is organised

src/gates/ — policy engine. Pure functions. No I/O. Evaluates rules, returns decisions.
src/mcp-server/ — Cloudflare Worker exposing the five tools over streamable HTTP.
src/worker/ — edge cache implementing Magic Checkout's shipping-info contract with SWR + degraded mode.
src/shopify-function/ — Payment Customization Function hiding COD based on product metafields.
evals/ — batch runner producing measured outcomes over calibrated synthetic orders.
skills/ — Claude Code skills for demo and eval workflows.

Conventions

TypeScript strict mode everywhere.
Paise integers for all currency. No floats.
UTC timestamps in ISO 8601. IST for display only.
Every gate decision must return reason_code and rule_id.
Audit trail is append-only. No mutation endpoints exist.
Idempotency keys required on all write operations.
Fail-closed default: if no rules configured, COD is blocked.

Code review conventions

Reviewers treat these invariants as merge gates for policy, payment, and audit changes:

All monetary values are paise integers.
Missing merchant configuration uses a fail-closed default.
The audit trail is append-only.
Every write operation requires an idempotency key.
Rate limiting is per-identity, never one shared bucket for all agents.

Common workflows

pnpm install          # install deps
pnpm build            # type-check
pnpm test             # run all tests
pnpm test -- --watch  # watch mode

Gotchas

Cloudflare Workers have no filesystem. Audit trail uses D1 (SQLite at the edge).
Magic Checkout is product-gated. We simulate the inbound contract for demo purposes.
Shopify Cart Transform update is Plus/dev-store-only. We use Payment Customization + shipping-rate trick for non-Plus compatibility.
Test-mode UPI: cancelling a payment results in SUCCESS (documented quirk).

Read the full file on GitHub · 52 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.

8d ago First seen · 52 lines · 490 tokens per session scan A 92a3b44bc8fa

Subscribe to this mod's changes

razor-dvara CLAUDE.md is an instructions file published in the GitHub repository Utkarsh-Sinha0/razor-dvara (0 stars, last pushed 18d ago), licensed MIT. It adds 490 tokens to every session, about $0.0024 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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razor-dvara: Instructions file for Claude Code