What is b2c-custom-api-development?

A guide to creating custom REST APIs for Salesforce B2C Commerce, an online-store platform. It covers routes, request and response formats, and access permissions.

Use it to define API routes and OpenAPI 3.0 schemas, configure OAuth access scopes, organize the REST API cartridge folder, and debug custom endpoints.

It removes guesswork when connecting storefront or external software to custom Commerce code. It also helps find and fix setup problems in the API structure and deployment process.

b2c-custom-api-development — Skill by SalesforceCommerceCloud

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/salesforcecommercecloud/b2c-developer-tooling/b2c-custom-api-development

Any agent

npx skills add SalesforceCommerceCloud/b2c-developer-tooling --skill b2c-custom-api-development

Clone the repo

git clone --depth 1 https://github.com/SalesforceCommerceCloud/b2c-developer-tooling

Made for: Claude Code, Codex.

Per session 152 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,402 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. 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.

Model	Per session	Once invoked
Fable 5	$0.00152	$0.03402
Opus 5	$0.00076	$0.01701
Sonnet 5	$0.00030	$0.00680
Haiku 4.5	$0.00015	$0.00340

Measured 2d ago against content hash 3bd3362e5234, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

b2c-custom-api-development 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 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.

Makes network callslowCapability

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

> **Why the tenant scope matters:** the SCAPI subcommands (`b2c scapi custom status`, `b2c scapi schemas list`) inject `SALESFORCE_COMMERCE_API:<tenant_id>` for you, but `b2c auth token` and raw curl send only the scopes

skills/b2c/skills/b2c-custom-api-development/SKILL.md · 282 lines

How it starts

The opening of the file, as written. The whole thing — 282 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Custom API Development Skill

This skill guides you through developing Custom APIs for Salesforce B2C Commerce. Custom APIs let you expose custom script code as REST endpoints under the SCAPI framework.

Tip: If b2c CLI is not installed globally, use npx @salesforce/b2c-cli instead (e.g., npx @salesforce/b2c-cli code deploy).

Scope & grounding

This skill provides CLI-specific workflows and quickstart patterns for Custom API development. It covers OpenAPI 3.0 contract structure, OAuth scope configuration, cartridge-path resolution rules, and circuit breaker behavior. However, platform-specific validation rules, operational limits, security scheme requirements, and Script API integration patterns can drift across Commerce Cloud releases. Before answering questions that reference specific API versions or framework behavior, or before emitting code the user will run, confirm current platform specifics against the official documentation via b2c docs search / b2c docs read (CLI) or docs_search / docs_read (MCP). The official documentation is the authoritative source for Custom API contract specifications, runtime behavior, and B2C Commerce platform details not covered here.

Canonical docs (confirm platform specifics with these):

commerce-api/custom-apis - overview, cartridge resolution, operational limits
commerce-api/custom-api-components-references - schema.yaml and script.js requirements
commerce-api/custom-api-authentication - OAuth scope rules, security schemes
commerce-api/custom-api-caching - caching behavior and configuration
commerce-api/custom-api-remote-includes - remote include patterns
commerce-api/custom-api-circuit-breaker - current thresholds and behavior
commerce-api/custom-api-troubleshooting - common issues and solutions
commerce-api/custom-api-status-report - registration status details
dw.system.RESTResponseMgr - Script API response manager
dw.system.Request - Script API request object
dw.system.RESTErrorResponse - Script API error response
dw.system.RESTSuccessResponse - Script API success response

Read the full file on GitHub · 282 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

2d ago First seen · 282 lines · 152 tokens per session scan A 3bd3362e5234

Subscribe to this mod's changes

b2c-custom-api-development is a skill published in the GitHub repository SalesforceCommerceCloud/b2c-developer-tooling (53 stars, last pushed 3d ago), licensed Apache-2.0. It adds 152 tokens to every session and 3,402 once invoked, about $0.0008 per session on Opus 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 2026-08-30.

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