20 Claude API Reference alternatives
Claude API Reference: Authoritative reference for the Claude API and Anthropic SDKs — model IDs, pricing, parameters, streaming, tool use, MCP, agents, prompt caching, and token counting. 20 agent skills do similar work, most sharing Developers, API and Documentation, ranked by how much they have in common with Claude API Reference.
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by Replicate
Replicate's official skill for running models via its API — predictions, polling, Prefer: wait, webhooks with signature validation, streaming and file handling.
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by Anthropic
Create, edit, and optimize Agent Skills — scaffold new skills, refine existing ones, run evals, and tune descriptions for reliable triggering.
Also: Developers, Documentation
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by Inngest
Inngest's durable-execution playbook as an agent skill — steps and memoisation, event and cron triggers, idempotency, cancellation, retries and non-retriable errors.
Also: Developers
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by Microsoft
Microsoft's official plugin that generates codeful MCP tools — a self-contained JS runtime plus JSON Schema metadata — and single-file HTML widgets to visualise their results.
Also: Developers
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by Microsoft
Microsoft's official plugin that connects a coding agent to a live Power Apps Studio session to author Canvas App screens, controls and formulas.
Also: Developers
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by Microsoft
Microsoft's official plugin that builds whole model-driven Power Apps — tables, forms, views, security roles and generative pages — from a natural-language brief.
Also: Developers
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by Microsoft
Microsoft's official agent plugin for building, securing and deploying Power Pages code sites, with 34 skills covering the whole site lifecycle.
Also: Developers
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by Inngest
A controlled upgrade path from Inngest SDK v3 to v4 — triggers into createFunction options, EventSchemas to eventType, realtime imports, step.invoke string IDs — with a scan-first, verify-last order.
Also: Developers
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by Inngest
An evidence-first audit skill: walk an existing TypeScript repo, name the exact call sites where background work can be lost, and land an incremental durability plan.
Also: Developers
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by .NET Team at Microsoft
Make slow Entity Framework Core queries fast — read the generated SQL first, fix N+1s, cartesian Include explosions and non-sargable predicates, then re-measure one change at a time.
Also: Developers
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by .NET Team at Microsoft
Diagnose an MSBuild build failure from a .binlog file — query the binary log through a dedicated MCP server instead of grepping console output, with a text-replay fallback.
Also: Developers
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by ayghri
An output-style skill that stops a coding agent burying the answer: action first, numbered steps, state restated every turn, no preamble or filler.
Also: Developers
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by SerpApi
SerpApi's official skill for structured search: which of 130+ engines to call for citations, local businesses, flights, hotels, shopping or jobs, which response key holds the answer, and the gotchas that silently return the wrong field.
Also: API
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by Brave
Brave's official skill for the Brave Search API — ranked web results with snippets and thumbnails, freshness and SafeSearch filters, search operators, pagination, and Goggles for custom ranking.
Also: API
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by Pydantic
Pydantic's official skill for modelling untrusted data in Python — constraints, model hierarchies, validators and serialisation, plus when not to reach for a BaseModel.
Also: API
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by Venice AI
Venice's official skill for its two text-to-image endpoints — the native API with negative prompts, CFG and seeds, and the OpenAI-compatible drop-in.
Also: API
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by Courier
Courier's official skill for building and debugging multi-channel notifications — email, SMS, push, in-app inbox, Slack, Teams and WhatsApp — from one send call.
Also: API
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by Apollo GraphQL
Sets up Apollo MCP Server so an AI agent can call a GraphQL API as MCP tools — defining tools from named operations, or exposing introspect/search/validate/execute for open-ended schemas.
Also: API
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by Apollo GraphQL
Apollo's official skill for writing Federation 2 subgraph schemas — entities and @key, @shareable, @external, @requires, @provides, @override, and reading composition errors.
Also: API
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by Coinbase
Coinbase's official skill for driving a crypto wallet from an agent: balances and transfers on Base, Polygon and Solana, plus paying for and monetising x402 APIs.
Also: API
