api-integration-specialist

api-integration-specialist is an agent for Claude Code from travisjneuman/.claude. It costs 74 tokens per session (970 once invoked), scanned A, original, MIT.

A specialist assistant for connecting software to outside services through APIs, which are defined ways for programs to communicate. It also covers webhooks, OAuth sign-in, request limits, retries, and SDK client libraries.

In plain words
What is it for?
Building API clients, OAuth authorization flows, webhook receivers, rate limiting, retries, authentication, payload validation, and SDK wrappers.
Why use it?
It helps handle the reliability and security details that can make third-party service connections difficult. These include verifying incoming events, refreshing login tokens, preventing duplicate processing, and backing off when a service limits requests.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Building API clients, OAuth authorization flows, webhook receivers, rate limiting, retries, authentication, payload validation, and SDK wrappers.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/travisjneuman/.claude/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.

Clone the repo
git clone --depth 1 https://github.com/travisjneuman/.claude

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-integration-specialist

README.md
[![agentmods](https://agentmods.dev/badge/agents/travisjneuman/.claude/api-integration-specialist/github.svg)](https://agentmods.dev/agents/travisjneuman/.claude/api-integration-specialist)
Your own site
<a href="https://agentmods.dev/agents/travisjneuman/.claude/api-integration-specialist"><img src="https://agentmods.dev/badge/agents/travisjneuman/.claude/api-integration-specialist/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-integration-specialist

Your own site · 80×15
<a href="https://agentmods.dev/agents/travisjneuman/.claude/api-integration-specialist"><img src="https://agentmods.dev/badge/agents/travisjneuman/.claude/api-integration-specialist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 74 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 970 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 $0.00074 $0.00970
Opus 5 $0.00037 $0.00485
Sonnet 5 $0.00015 $0.00194
Haiku 4.5 $0.00007 $0.00097

Measured 10d ago against content hash 3c386aecf420, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

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 10d 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.

agents/api-integration-specialist.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 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 · 124 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. 10d ago First seen · 124 lines · 74 tokens per session scan A 3c386aecf420

Subscribe to this mod's changes

api-integration-specialist is an agent published in the GitHub repository travisjneuman/.claude (97 stars, last pushed 5d ago), licensed MIT. It adds 74 tokens to every session and 970 once invoked, about $0.0004 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.

Related

Other agents, from other repositories

security-auditor

Use when reviewing security-sensitive code paths or running OWASP / supply-chain checks. Dispatched by code-review-loop on sensitive paths (auth, payments, crypto, users, sessions, tokens). Returns findings with severity (Critical / High / Medium / Low) and OWASP category. Context: A diff touches the auth middleware.…

duthaho/claudekit · 164 tokens

scout

Use when mapping a codebase area or auditing dependencies. Dispatched by the map-codebase and audit-dependencies skills. Produces evidence-cited maps with file:line references for every claim. Context: A teammate needs to know how the auth flow works. user: "Map the auth flow for me." assistant: "Dispatching the scout…

duthaho/claudekit · 148 tokens

code-reviewer

Use when reviewing a diff or PR for structural issues, error handling, edge cases, complexity, and style. Dispatched primarily by code-review-loop. Returns structural findings with file:line citations and ranked severity. Pairs with security-auditor for sensitive paths. Context: A PR is ready for first-pass review.…

duthaho/claudekit · 159 tokens

investigator

Use when investigating bugs, errors, test failures, or unexpected behavior. Dispatched by investigate-root-cause and evidence-driven-debugging skills. Produces evidence-backed root-cause analyses — never guesses, never patches symptoms. Context: An API endpoint is returning intermittent 500s. user: "The /api/users…

duthaho/claudekit · 155 tokens

backend-expert-csk

Senior .NET backend expert. Applies the project's backend-pattern skill (devarch-module = MediatR CQRS / IResult / AOP by default; a project may declare its own). Use proactively — owns server behaviour: endpoints, handlers, validators, controllers, business rules, integrations. Any request about it is yours whatever…

byerlikaya/claude-starter-kit · 78 tokens

bench-implementer

Implements a single fable-bench packet from a brief. Sonnet 5, builds with the six fable skills loaded. Use for bench/ implementation work only.

DizzyMii/fable-skills · 40 tokens