agent-api-integration-specialist

agent-api-integration-specialist is a skill for Claude Code from travisjneuman/.claude. It costs 80 tokens per session (948 once invoked), scanned A, original, MIT.

An integration specialist for connecting software to third-party APIs, which are interfaces provided by other services. It covers webhooks, OAuth login and permission flows, rate limits, retries, and SDK wrappers.

In plain words
What is it for?
Use it to connect external APIs, receive webhook events, implement OAuth, manage access tokens, enforce request limits, or build an API client library.
Why use it?
It helps prevent failed requests, duplicate webhook events, expired tokens, and rejected requests caused by service limits. It provides patterns for safely communicating with outside services.

Skill for Claude Code

Written for Claude Code: context: fork in frontmatter. Also seen: agent in frontmatter; mentions subagents.

Good fit Use it to connect external APIs, receive webhook events, implement OAuth, manage access tokens, enforce request limits, or build an API client library.

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Install with agentmods
npx agentmods add skills/travisjneuman/.claude/agent-api-integration-specialist
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 travisjneuman/.claude --skill agent-api-integration-specialist
Clone the repo
git clone --depth 1 https://github.com/travisjneuman/.claude

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Your own site
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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 agent-api-integration-specialist

Your own site · 80×15
<a href="https://agentmods.dev/skills/travisjneuman/.claude/agent-api-integration-specialist"><img src="https://agentmods.dev/badge/skills/travisjneuman/.claude/agent-api-integration-specialist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 80 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 948 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 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 5.1 $0.00080 $0.00948
Opus 5.5 $0.00032 $0.00379
Sonnet 5.5 $0.00016 $0.00190
Haiku 4.5 $0.00008 $0.00095

Measured 17d ago against content hash 053b94ea98db, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agent-api-integration-specialist 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 17d 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.

skills/agent-api-integration-specialist/SKILL.md · 115 lines

How it starts

The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.

API Integration Specialist

Expert in third-party API integration, webhook handling, and SDK development. Designs resilient API client architectures with proper error handling, retry strategies, rate limiting, and authentication flows.

Capabilities

OAuth Integration

  • OAuth 2.0 authorization code flow with PKCE for SPAs and mobile
  • Client credentials flow for server-to-server communication
  • Token refresh logic with race condition prevention
  • Scope management and incremental authorization
  • OAuth state parameter for CSRF protection
  • Token storage patterns (httpOnly cookies, secure storage)

Webhook Handling

  • Signature verification (HMAC-SHA256, RSA, Ed25519)
  • Idempotency keys to prevent duplicate processing
  • Retry handling with exponential backoff on failure
  • Event processing with ordered delivery guarantees
  • Dead letter queues for failed webhook processing
  • Webhook registration and management APIs
  • Payload validation and schema verification

Rate Limiting

  • Token bucket implementation for client-side rate limiting
  • Sliding window counters for distributed environments
  • Backoff strategies respecting Retry-After headers
  • Concurrent request management with semaphores
  • Per-endpoint and per-account rate limit tracking
  • Rate limit header parsing (X-RateLimit-Remaining, X-RateLimit-Reset)

Retry Strategies

  • Exponential backoff with configurable base and max delay
  • Full jitter to prevent thundering herd problems
  • Circuit breaker pattern (closed, open, half-open states)
  • Timeout configuration per endpoint type (read vs write)
  • Retry budget to prevent cascading failures
  • Idempotency-safe retry logic (safe for GET/PUT, careful with POST)

SDK Wrapping

  • Type-safe client generation from OpenAPI specifications
  • Error mapping from API-specific errors to domain errors
  • Response transformation and normalization layers
  • Pagination handling (cursor, offset, keyset) with async iterators
  • Request/response logging with sensitive data redaction
  • Versioned client interfaces for API version management

Read the full file on GitHub · 115 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. 17d ago First seen · 115 lines · 80 tokens per session scan A 053b94ea98db

Subscribe to this mod's changes

agent-api-integration-specialist is a skill published in the GitHub repository travisjneuman/.claude (101 stars, last pushed today), licensed MIT. It adds 80 tokens to every session and 948 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-09-30.