--- title: Top APIs & Integrations Skills slug: apis-integrations type: primary-category canonical: https://top-agent-skills.com/top-skills-for-apis-integrations skills: 22 rubric: 1.0 updated: 2026-09-02 --- # Top APIs & Integrations Skills **stripe-best-practices** is the top-ranked apis & integrations Skill at 59/100: Stripe's own integration playbook: pick the right API, set up Connect and billing, and handle keys and webhooks securely. REST and GraphQL clients, OAuth flows, webhook receivers, third-party SaaS connectors, rate-limit and retry patterns. 22 Skills indexed, ranked by a published composite score (https://top-agent-skills.com/about/methodology). Content last changed 2026-09-02. ## The ranking ### 1. stripe-best-practices — score 59/100 (verified-org) Stripe's own integration playbook: pick the right API, set up Connect and billing, and handle keys and webhooks securely. - Best for: Building, modifying, or reviewing any Stripe integration — payments, marketplaces, subscriptions, secure key management. - Not ideal for: Non-Stripe payment processors (Adyen, Braintree, PayPal) — the rules are Stripe-specific. - Publisher: Stripe · MIT - Verified on: claude-code, cursor, gemini-cli ```bash /plugin marketplace add stripe/ai ``` Full entry: https://top-agent-skills.com/skill/stripe-best-practices (https://top-agent-skills.com/skill/stripe-best-practices.md) ### 2. stripe-projects — score 59/100 (verified-org) Provision a Postgres, Redis, auth, or LLM provider through the Stripe Projects catalog rather than signing up by hand. - Best for: Letting an agent provision and wire up cloud services (DB, cache, auth, email, model providers) with credentials returned inline. - Not ideal for: Teams that must provision through their own IaC (Terraform, Pulumi) or a locked-down cloud account. - Publisher: Stripe · MIT - Verified on: claude-code, cursor, gemini-cli ```bash /plugin marketplace add stripe/ai ``` Full entry: https://top-agent-skills.com/skill/stripe-projects (https://top-agent-skills.com/skill/stripe-projects.md) ### 3. resend — score 59/100 (verified-org) Resend's own API skill: send transactional and batch email, handle inbound webhooks, and manage domains, templates, and keys. - Best for: Wiring Resend into an app — transactional sends, batch sends, inbound webhook handling, and domain/template/key management. - Not ideal for: Non-Resend providers (SendGrid, Postmark, SES) — the SDK calls and webhook signatures are Resend-specific. - Publisher: Resend · MIT - Verified on: claude-code, cursor, codex ```bash npx skills add resend/resend-skills ``` Full entry: https://top-agent-skills.com/skill/resend-email (https://top-agent-skills.com/skill/resend-email.md) ### 4. connect-recommend — score 58/100 (verified-org) The marketplace architecture decision, made with a compatibility matrix that blocks invalid Connect configurations instead of describing them. - Best for: Choosing a Stripe Connect charge pattern and account type before you build — the decision that is expensive to reverse once money is flowing. - Not ideal for: Writing the integration. This produces a recommendation document; stripe-payments is the implementation skill once the design is settled. - Publisher: Stripe · MIT - Verified on: claude-code ```bash npx skills add stripe/ai --skill connect-recommend ``` Full entry: https://top-agent-skills.com/skill/stripe-connect-recommend (https://top-agent-skills.com/skill/stripe-connect-recommend.md) ### 5. stripe-directory — score 57/100 (verified-org) Find vendors and partners for a job-to-be-done — and, where supported, let the agent purchase and consume the service. - Best for: Discovering software, service providers, or partners for a vertical or workflow, with optional agent-initiated purchase. - Not ideal for: Internal vendor catalogs or procurement that must route through an approved supplier list. - Publisher: Stripe · MIT - Verified on: claude-code, cursor, gemini-cli ```bash /plugin marketplace add stripe/ai ``` Full entry: https://top-agent-skills.com/skill/stripe-directory (https://top-agent-skills.com/skill/stripe-directory.md) ### 6. webhook-skills — score 56/100 (verified-org) Hookdeck's webhook playbook: 40 provider-specific skills covering signature verification, idempotency, and event handling — each with runnable examples. Full entry: https://top-agent-skills.com/skill/hookdeck-webhook-skills (https://top-agent-skills.com/skill/hookdeck-webhook-skills.md) ### 7. composio — score 54/100 (verified-org) Composio's official skill for connecting agents to 1000+ external apps: auth configs, per-user connections, tool execution, and triggers. Full entry: https://top-agent-skills.com/skill/composio-tool-router (https://top-agent-skills.com/skill/composio-tool-router.md) ### 8. workos — score 54/100 (official-anthropic) Full-stack WorkOS implementation with auth provider migration paths. Full entry: https://top-agent-skills.com/skill/workos (https://top-agent-skills.com/skill/workos.md) ### 9. workos-widgets — score 54/100 (official-anthropic) Drop-in WorkOS widgets with backend token wiring across every major framework. Full entry: https://top-agent-skills.com/skill/workos-widgets (https://top-agent-skills.com/skill/workos-widgets.md) ### 10. paddle-agent-skills — score 53/100 (verified-org) Paddle's own integration playbook: ten skills for Checkout, webhooks, pricing pages, and subscription lifecycle on the merchant-of-record platform. Full entry: https://top-agent-skills.com/skill/paddle-agent-skills (https://top-agent-skills.com/skill/paddle-agent-skills.md) ### 11. twilio — score 53/100 (verified-org) Twilio's official Developer Kit: 55 skills across SMS, WhatsApp, Voice, Verify, SendGrid, and compliance — plus the Twilio MCP. Public beta. Full entry: https://top-agent-skills.com/skill/twilio-skills (https://top-agent-skills.com/skill/twilio-skills.md) ### 12. box — score 53/100 (verified-org) Box as an agent surface, plus the contract-review workflows nothing else in the catalog covers. Full entry: https://top-agent-skills.com/skill/box-for-ai (https://top-agent-skills.com/skill/box-for-ai.md) ### 13. hubspot-agent-skills — score 52/100 (verified-org) First-party HubSpot CRM operations for agents: lookups, deals, quote-to-cash, reporting. Full entry: https://top-agent-skills.com/skill/hubspot-agent-skills (https://top-agent-skills.com/skill/hubspot-agent-skills.md) ### 14. gtm-eng-skills — score 52/100 (verified-org) Waterfall enrichment as a procedure, not a single provider call. Full entry: https://top-agent-skills.com/skill/gtm-eng-skills (https://top-agent-skills.com/skill/gtm-eng-skills.md) ### 15. block-kit — score 51/100 (verified-org) Slack's own Block Kit skill — and the rare vendor skill that needs no token, because it validates against Slack's public API. Full entry: https://top-agent-skills.com/skill/slack-block-kit (https://top-agent-skills.com/skill/slack-block-kit.md) ### 16. system-design — score 51/100 (official-anthropic) System design from requirements. APIs, data, boundaries, scale. Full entry: https://top-agent-skills.com/skill/system-design (https://top-agent-skills.com/skill/system-design.md) ### 17. norman-finance — score 49/100 (verified-org) The ledger, not the checkout: categorise, reconcile, invoice, file. Full entry: https://top-agent-skills.com/skill/norman-finance (https://top-agent-skills.com/skill/norman-finance.md) ### 18. zotero-skills — score 48/100 (community) Programmatic access to the reference manager academia actually uses. Full entry: https://top-agent-skills.com/skill/zotero-skills (https://top-agent-skills.com/skill/zotero-skills.md) ### 19. vibe-prospecting — score 48/100 (verified-org) The top of the funnel: find the company, find the person, enrich the row. Full entry: https://top-agent-skills.com/skill/vibe-prospecting (https://top-agent-skills.com/skill/vibe-prospecting.md) ### 20. carta-cap-table — score 47/100 (verified-org) The equity stack: cap table, 409A history, conversions, exit waterfall. Full entry: https://top-agent-skills.com/skill/carta-cap-table (https://top-agent-skills.com/skill/carta-cap-table.md) ### 21. fhir-developer-skill — score 44/100 (verified-org) The standalone FHIR skill: modeling, validation, SMART on FHIR — without the full healthcare plugin. Full entry: https://top-agent-skills.com/skill/fhir-developer-skill (https://top-agent-skills.com/skill/fhir-developer-skill.md) ### 22. hubspot-admin-skills — score 42/100 (community) A HubSpot admin in a plugin: audits, dedup, scoring, lifecycle hygiene — 37 skills deep. Full entry: https://top-agent-skills.com/skill/hubspot-admin-skills (https://top-agent-skills.com/skill/hubspot-admin-skills.md) ## About this category The best agent skills for APIs and integrations in 2026 pair clean REST and GraphQL client patterns with OAuth 2.0/PKCE implementation, webhook signature verification with idempotency, and provider-specific Skills — Stripe for payments, Twilio for SMS, Hookdeck for 40-provider webhook flows, Composio for multi-app OAuth in a single skill — covering the full integration stack. API & integration Skills give agents the patterns needed to consume third-party APIs cleanly — REST, GraphQL, OAuth flows, webhook receivers, rate-limit handling, retry logic, and the SaaS-connector long tail. They turn "call this API" prompts into reliable, idempotent integration code. Common workflows include building a REST client with retry and rate-limit awareness, implementing an OAuth flow (authorization code, PKCE, refresh tokens), writing a webhook receiver with signature verification and idempotency, integrating with a third-party SaaS (Slack, Salesforce, HubSpot, Notion), generating typed clients from OpenAPI specs, and reviewing integration code for retry safety and timeout handling. Several pair with the relevant SaaS MCP servers for live data. Backend engineers, integration engineers, and full-stack developers wiring up the SaaS spider-web use these Skills heavily. Composite scoring weights install count, provenance, and how rigorously the Skill handles the gnarly parts: webhook idempotency, OAuth refresh, retry-with-backoff, rate-limit headers, and clear error surfacing. ## Common questions **REST or GraphQL?** Skills exist for both. REST clients dominate the long tail; GraphQL Skills tend to focus on Apollo or Relay patterns. Choose based on what the API offers. **How do these Skills handle OAuth?** The top Skills implement the full flow — authorization, code exchange, token refresh, secure storage — and handle the common errors (expired tokens, revoked grants, scope mismatch). **Are webhook idempotency patterns enforced?** Yes — the top Skills check event IDs against a processed set with database-level uniqueness, verify signatures before processing, and document the retry behavior. **Do these Skills support typed clients from OpenAPI?** Yes — several Skills run openapi-typescript or similar generators and produce a typed client wired into your existing HTTP layer. **How do they handle rate limits?** The top Skills read the Retry-After header, implement exponential backoff with jitter, and surface 429 errors clearly. Lower-ranked Skills retry blindly until success or timeout. **Which Skill should I use for which integration job?** Match the Skill to the shape of the integration. For a webhook receiver with provider-specific signature verification and idempotency, use Hookdeck's webhook-skills (40 providers, runnable examples). For SMS/WhatsApp/Voice and messaging compliance, use Twilio's official Developer Kit (public beta). For payments, use Stripe's own skills. To connect an agent to many third-party apps with per-user OAuth in one place, use Composio's Tool Router skill. A single deep integration beats a broad tool router; a multi-app agent is the reverse. --- _Top Agent Skills. Machine-readable twin of https://top-agent-skills.com/top-skills-for-apis-integrations._ _JSON: https://top-agent-skills.com/top-skills-for-apis-integrations.json · whole catalog: https://top-agent-skills.com/skills.json (CC BY 4.0)_