api-patterns

api-patterns is a skill for Claude Code from DDS-Solutions/AI-TadPole-OS. It costs 28 tokens per session (1,367 once invoked), scanned A, a copy of api-patterns, MIT.

Guidance for choosing and designing application programming interfaces, or APIs—the agreed ways that software systems exchange data.

In plain words
What is it for?
It helps choose between REST, GraphQL, and tRPC; design resource names, errors, pagination, authentication, and versioning; and plan APIs for TypeScript projects that share code across packages.
Why use it?
It helps avoid mismatched API styles, unclear responses, difficult version changes, and unsuitable choices for a project.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions subagents.

Good fit It helps choose between REST, GraphQL, and tRPC; design resource names, errors, pagination, authentication, and versioning; and plan APIs for TypeScript projects that share code across packages.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dds-solutions/ai-tadpole-os/api-patterns
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 DDS-Solutions/AI-TadPole-OS --skill api-patterns
Clone the repo
git clone --depth 1 https://github.com/DDS-Solutions/AI-TadPole-OS

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.

agentmods badge for api-patterns

README.md
[![agentmods](https://agentmods.dev/badge/skills/dds-solutions/ai-tadpole-os/api-patterns/github.svg)](https://agentmods.dev/skills/dds-solutions/ai-tadpole-os/api-patterns)
Your own site
<a href="https://agentmods.dev/skills/dds-solutions/ai-tadpole-os/api-patterns"><img src="https://agentmods.dev/badge/skills/dds-solutions/ai-tadpole-os/api-patterns/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.

agentmods 80×15 button for api-patterns

Your own site · 80×15
<a href="https://agentmods.dev/skills/dds-solutions/ai-tadpole-os/api-patterns"><img src="https://agentmods.dev/badge/skills/dds-solutions/ai-tadpole-os/api-patterns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,367 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 72% copy Near-identical to another mod 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 5.1 $0.00028 $0.01367
Opus 5.5 $0.00011 $0.00547
Sonnet 5.5 $0.00006 $0.00273
Haiku 4.5 $0.00003 $0.00137

Measured 3d ago against content hash 0d7294aae3b6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

api-patterns 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.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/api_validator.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

This is a copy

72% identical to api-patterns — 138 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agent/skills/api-patterns/SKILL.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

[!IMPORTANT] AI Context & Knowledge Heritage

  • Subsystem: Agent Skills Registry / api-patterns
  • Architecture: @docs ARCHITECTURE:Documentation
  • Failure Path: Information drift, legacy terminology, or documentation mismatch.
  • Observability: Traceability via execution/parity_guard.py ([SKILL])

API Patterns — Architectural Engineering Standards

API design principles and decision-making. Learn to THINK: select the right architectural paradigm for the specific deployment topology.


🏛️ Tadpole OS Native API Architecture

In this codebase, API communication follows strict sovereign principles:

  • Core Engine Gateway: High-performance Axum Rust router (server-rs/src/router.rs) handling /v1/* routes.
  • Contract as Source of Truth: OpenAPI 3.1 specification maintained at docs/openapi.yaml verified by execution/parity_guard.py.
  • Frontend Clients: Strictly typed services located in src/services/*_api*.ts consuming typed contracts.
  • Envelope Standard: Predictable JSON response envelopes (success, data, error).
  • Auth Model: Bearer tokens (ADMIN_TOKEN, NEURAL_TOKEN, OVERSIGHT_PUBLIC_KEY).

🎯 Progressive Disclosure & L3 Topic Index

Read REQUIRED core standards below; consult deep L3 Topic Guides on demand:

Guide / Tool Topic & Scope Trigger / When to Read
references/api-style.md REST vs GraphQL vs tRPC decision tree Choosing API communication style
references/rest.md Resource naming, HTTP verbs, status code selection Designing REST endpoints
references/response.md Envelope pattern, error schema, pagination strategies Structuring payload contracts
references/auth.md JWT, Bearer token, Passkey/WebAuthn, API keys Authentication & session security
references/versioning.md URI (/v1), Header, Query, sunset headers Planning API lifecycle & evolution
references/rate-limiting.md Token bucket, sliding window, 429 Retry-After headers Protecting APIs from abuse/overload
references/documentation.md OpenAPI/Swagger best practices, schema components Writing API specs & docs
references/security-testing.md OWASP API Top 10, BOLA/IDOR, authz bypass checks Pre-release security auditing
references/graphql.md Schema design, depth/complexity limiting When evaluating GraphQL queries
references/trpc.md End-to-end TS monorepo type inference When evaluating tRPC architectures
scripts/api_validator.py Deterministic Axum and OpenAPI endpoint validator with --test suite Automated API audit or self-test verification

Read the full file on GitHub · 98 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 Changed · +10 lines 0d7294aae3b6
  2. 1mo ago First seen · 88 lines · 28 tokens per session scan A edd76883e4b3

Subscribe to this mod's changes

api-patterns is a skill published in the GitHub repository DDS-Solutions/AI-TadPole-OS (8 stars, last pushed 3d ago), licensed MIT. It adds 28 tokens to every session and 1,367 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 72% identical to api-patterns, differing in 138 lines, and is treated as a copy.

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