claude-api-opslisted

Building applications ON Claude - the Anthropic API and Claude Agent SDK. Use for: anthropic api, claude api, messages api, tool use, function calling, prompt caching, agent sdk, claude-agent-sdk, structured output, json schema output, batches api, extended thinking, adaptive thinking, model selection, claude pricing, build claude agent, anthropic sdk, stop_reason handling, streaming claude, token counting, cache_control, output_config, tool_choice, agentic loop, rate limits anthropic.
0xDarkMatter/claude-mods · ★ 22 · AI & Automation · score 74

Install: claude install-skill 0xDarkMatter/claude-mods

# Claude API Operations Building applications and agents on Anthropic's API: the Messages API, tool use, prompt caching, structured outputs, batches, thinking/effort, and the Claude Agent SDK. For developers writing apps *against* the API — not for using Claude Code itself. **API surfaces move fast.** Model IDs, parameters, and betas in this skill were verified against platform.claude.com (2026-06). When in doubt — especially for "latest model" or pricing questions — verify with WebFetch against `https://platform.claude.com/docs/en/about-claude/models/overview.md` or query the Models API (`client.models.list()`). ## Current Models (verified 2026-06) | Model | ID (exact, no date suffix) | Context | Max Output | Input $/MTok | Output $/MTok | |---|---|---|---|---|---| | Claude Fable 5 | `claude-fable-5` | 1M | 128K | $10.00 | $50.00 | | Claude Opus 4.8 | `claude-opus-4-8` | 1M | 128K | $5.00 | $25.00 | | Claude Sonnet 4.6 | `claude-sonnet-4-6` | 1M | 64K | $3.00 | $15.00 | | Claude Haiku 4.5 | `claude-haiku-4-5` | 200K | 64K | $1.00 | $5.00 | Use these alias IDs verbatim. **Never append date suffixes** (`claude-sonnet-4-6-20251114` is wrong → 404). Older actives: `claude-opus-4-7`, `claude-opus-4-6`, `claude-opus-4-5`, `claude-sonnet-4-5`. Live capability lookup: `client.models.retrieve("claude-opus-4-8")` → `.max_input_tokens`, `.max_tokens`, `.capabilities` dict. ## Model Selection Decision Tree ``` What is the workload? │ ├─ Hardest problems, long-horizon agents, deep