integration-standards

integration-standards is a cursor rule for coding agents from e-gov/cursor-prompts. It costs 737 tokens per session, scanned A, original, MIT.

A set of rules for designing REST APIs, message queues, and connections between systems. REST APIs use web addresses and standard methods such as GET, POST, PUT, PATCH, and DELETE to exchange data.

In plain words
What is it for?
Use it when creating or changing versioned APIs and integrations, including their OpenAPI definitions and JSON data schemas.
Why use it?
It keeps URLs, status codes, errors, pagination, and API documentation consistent between services.

Cursor rule

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 rules/e-gov/cursor-prompts/integration-standards
Clone the repo
git clone --depth 1 https://github.com/e-gov/cursor-prompts

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.

agentmods badge for integration-standards

README.md
[![agentmods](https://agentmods.dev/badge/rules/e-gov/cursor-prompts/integration-standards.svg)](https://agentmods.dev/rules/e-gov/cursor-prompts/integration-standards)
Your own site
<a href="https://agentmods.dev/rules/e-gov/cursor-prompts/integration-standards"><img src="https://agentmods.dev/badge/rules/e-gov/cursor-prompts/integration-standards.svg" alt="Measured on agentmods" height="20"></a>
Per session 737 This file is loaded in full into every session.
When invoked 737 The same file — it is already loaded in full.
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 $0.00737 $0.00737
Opus 5 $0.00368 $0.00368
Sonnet 5 $0.00147 $0.00147
Haiku 4.5 $0.00074 $0.00074

Measured 3d ago against content hash 87000318ea9a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

integration-standards 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 3d 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.

rules/common/integration-standards.mdc · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Integration Standards

Context

  • Apply when developing REST APIs, message queues, or cross-system integrations
  • Ensures consistent patterns across different integration types
  • Focuses on automatically verifiable pattern validation

Requirements

API Design Patterns

  • Use resource-based URLs: /X for collections, /X/{id} for specific resources
  • Use kebab-case for multi-word resources: /boat-engines
  • Use standard HTTP methods: GET (read), POST (create), PUT (replace), PATCH (partial update), DELETE (remove); use HEAD/OPTIONS where applicable
  • Include API version in URL path: /v1/persons
  • Return appropriate HTTP status codes: 200, 201, 202, 204, 400, 401, 403, 404, 409, 422, 429, 500, 503
  • Use RFC 7807 Problem Details for errors (type, title, status, detail, instance); include application error code and traceId/correlationId
  • Use query parameters for filtering: GET /persons?name=John&age=25
  • Implement pagination for large result sets: ?limit=25&offset=50
  • Document APIs using OpenAPI specification (mandatory)
  • Follow Contract-First approach (define OpenAPI spec before implementation)
  • Include JSON schema definitions for all data structures

Message Queue Patterns

  • Use channel naming convention: [data_owner].[message_data]
  • Add type suffixes: Request/Response, Topic, Queue
  • Use JSON format for all messages unless binary data required
  • Validate JSON messages using json-schema validator
  • Include correlation-id for request-response patterns
  • Encode binary files as Base64 in JSON messages

Security & Error Handling

  • Use HTTPS protocol for all cross-system communication
  • Use OAuth 2.1/OpenID Connect with Bearer tokens in the Authorization header; NEVER include tokens in URLs or query parameters
  • Validate SSL certificates for secure connections
  • Include correlation IDs in all integration requests and propagate W3C Trace Context headers (traceparent, tracestate)
  • Return RFC 7807 Problem Details for error responses

Read the full file on GitHub · 90 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.

  1. 3d ago First seen · 90 lines · 737 tokens per session scan A 87000318ea9a

Subscribe to this mod's changes

integration-standards is a cursor rule published in the GitHub repository e-gov/cursor-prompts (34 stars, last pushed 4mo ago), licensed MIT. It adds 737 tokens to every session, about $0.0037 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.