409 pages for schema.

SEP-1034: Support default values for all primitive types in elicitation schemas Model Context Protocol · title seps/1034--support-default-values-for-all-primitive-types-in SEP-1330: Elicitation Enum Schema Improvements and Standards Compliance Model Context Protocol · title seps/1330-elicitation-enum-schema-improvements-and-standards SEP-1613: Establish JSON Schema 2020-12 as Default Dialect for MCP Model Context Protocol · title seps/1613-establish-json-schema-2020-12-as-default-dialect-f SEP-2106: Tools `inputSchema` & `outputSchema` Conform to JSON Schema 2020-12 Model Context Protocol · title seps/2106-json-schema-2020-12 Schema Reference Model Context Protocol · title specification/2025-06-18/schema Schema Reference Model Context Protocol · title specification/2025-11-25/schema Schema Reference Model Context Protocol · title specification/2026-07-28/schema Schema Reference Model Context Protocol · title specification/draft/schema optimizing-for-cost-and-intelligence Claude Developer Platform · in the page about-claude/models/optimizing-for-cost-and-intelligence …touching quality; only the second group moves along it: <Frame>  * `tool_use` content blocks in API requests and responses * `tool_result` content blocks in API requests When you use `t… customer-support-chat Claude Developer Platform · in the page about-claude/use-case-guides/customer-support-chat …on user input. Returned value is per month premium.", "input_schema": { "type": "object", "properties": { "make": {"type": "string", "description": "Th… PDF Processing Claude Developer Platform · in the page agents-and-tools/agent-skills/best-practices …ser asks about sales metrics, Claude only needs to read sales-related schemas, not finance or marketing data. This keeps token usage low and context focused. * `bigquery-skill/` * `SKILL.md` (over… PDF Processing Claude Developer Platform · in the page agents-and-tools/agent-skills/overview …ode into context **Resources:** Reference materials such as database schemas, API documentation, templates, or examples Claude accesses these files only when referenced. The filesystem model means e… mcp-connector Claude Developer Platform · in the page agents-and-tools/mcp-connector …", "description": "Returns the text it receives.", "input_schema": { "type": "object", "properties": { "text": { "type": "string" } }, "required": ["text"] }… reference Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/reference …ocs/en/api/beta/tunnels/list) for all endpoints, request and response schemas, and examples. <Note> The previous Admin API surface at `/v1/organizations/tunnels` (beta header `mcp-tunnels-2026-05-1… advisor-tool Claude Developer Platform · in the page agents-and-tools/tool-use/advisor-tool …ash", "description": "Run a bash command", "input_schema": { "type": "object", "properties": {"command": {"type": "string"}}, }, }, ]… bash-tool Claude Developer Platform · in the page agents-and-tools/tool-use/bash-tool …fields, `type` and `name`, and the `name` must be `bash`. The tool is schema-less: you don't provide an `input_schema`, because the schema is built into Claude's model and can't be modified. The follo… build-a-tool-using-agent Claude Developer Platform · in the page agents-and-tools/tool-use/build-a-tool-using-agent …er SDK abstraction. The example tool is `create_calendar_event`. Its schema uses nested objects, arrays, and optional fields, so you will see how Claude handles realistic input shapes rather than a s… computer-use-tool Claude Developer Platform · in the page agents-and-tools/tool-use/computer-use-tool …ment the computer use tool The computer use tool is implemented as a schema-less tool. When using this tool, you don't need to provide an input schema as with other tools; the schema is built into Cl… define-tools Claude Developer Platform · in the page agents-and-tools/tool-use/define-tools …s/en/agents-and-tools/tool-use/define-tools description: Specify tool schemas, write effective descriptions, and control when Claude calls your tools. --- ## Prerequisites * Familiarity with the [to… fine-grained-tool-streaming Claude Developer Platform · in the page agents-and-tools/tool-use/fine-grained-tool-streaming …to a file", "eager_input_streaming": true, "input_schema": { "type": "object", "properties": { "filename": { "type": "string",… handle-tool-calls Claude Developer Platform · in the page agents-and-tools/tool-use/handle-tool-calls …g the input being passed to the tool, conforming to the tool's `input_schema`. A `tool_use` block for a member of the [computer use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/comp… how-tool-use-works Claude Developer Platform · in the page agents-and-tools/tool-use/how-tool-use-works …ool use the same way they would any other typed interface: define the schema, handle the callback, return a result. The difference is that the caller on the other side is a language model choosing whi… manage-tool-context Claude Developer Platform · in the page agents-and-tools/tool-use/manage-tool-context …context window until Claude asks for them. Instead of sending 50 tool schemas upfront, you send a single `tool_search` tool and let Claude discover the rest on demand. This trades a small amount of la… memory-tool Claude Developer Platform · in the page agents-and-tools/tool-use/memory-tool …iguration: the `name` must be `memory`, and you don't define an input schema for an Anthropic-provided tool. 2. Implement a client-side handler for each memory command. Your handler must reject paths… overview Claude Developer Platform · in the page agents-and-tools/tool-use/overview …ve Claude call a function that you define, pass a tool with an `input_schema`, then run the call when Claude returns a `tool_use` block. The [client tool example](https://platform.claude.com/docs/en/a… parallel-tool-use Claude Developer Platform · in the page agents-and-tools/tool-use/parallel-tool-use …ion": "Get the current weather in a given location", "input_schema": { "type": "object", "properties": { "location": { "ty… Process results programmatically Claude Developer Platform · in the page agents-and-tools/tool-use/programmatic-tool-calling …database. Returns a list of rows as JSON objects.", "input_schema": { "type": "object", "properties": { "sql": { "type": "string",… server-tools Claude Developer Platform · in the page agents-and-tools/tool-use/server-tools …oduces a `tool_use` block, whether it is user-defined or an Anthropic-schema client tool such as the [Bash tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/bash-tool). When that occ… strict-tool-use Claude Developer Platform · in the page agents-and-tools/tool-use/strict-tool-use …n/agents-and-tools/tool-use/strict-tool-use description: Enforce JSON Schema compliance on Claude's tool inputs with grammar-constrained sampling. --- Setting `strict: true` on a tool definition guar… text-editor-tool Claude Developer Platform · in the page agents-and-tools/tool-use/text-editor-tool …-claude/api-and-data-retention). </Note> Claude can use an Anthropic-schema text editor tool to view and modify text files, helping you debug, fix, and improve your code or other text documents. This… tool-reference Claude Developer Platform · in the page agents-and-tools/tool-use/tool-reference …ic's infrastructure, and **client tools** where Anthropic defines the schema but your application handles execution. Both kinds appear in your request's `tools` array alongside any user-defined tools.… Log at info level Claude Developer Platform · in the page agents-and-tools/tool-use/tool-runner …ator inspects the function arguments and docstring to derive the JSON schema for you. </Tab> <Tab title="TypeScript"> Use `betaZodTool()` for type-safe tool definitions with Zod validation, o… tool-search-tool Claude Developer Platform · in the page agents-and-tools/tool-use/tool-search-tool …cription": "Get the weather at a specific location", "input_schema": { "type": "object", "properties": { "location": {"type": "string"}, "… tool-use-with-prompt-caching Claude Developer Platform · in the page agents-and-tools/tool-use/tool-use-with-prompt-caching …ription": "Get the current weather in a given location", "input_schema": { "type": "object", "properties": { "location": { "type": "string" } }, "requir… troubleshooting-tool-use Claude Developer Platform · in the page agents-and-tools/tool-use/troubleshooting-tool-use …calls your tool | Tool name collision or overly generic schema | Check for duplicate names across your tool list. Add `input_examples` to make the intended use concrete.… web-fetch-tool Claude Developer Platform · in the page agents-and-tools/tool-use/web-fetch-tool …"description": "Run Python code and return its output", "input_schema": { "type": "object", "properties": { "code": { "type": "string" } }, "required": ["code"] }… Beta Claude Developer Platform · in the page api/beta …hether the model supports structured output / JSON mode / strict tool schemas. - `thinking: BetaThinkingCapability` Thinking capability and supported type configurations. - `support… Agents Claude Developer Platform · in the page api/beta/agents …elp it decide when to use the tool. minLength: 1 - `input_schema: BetaManagedAgentsCustomToolInputSchema` JSON Schema defining the expected input parameters for the tool. - `… Archive Agent Claude Developer Platform · in the page api/beta/agents/archive …- `type: "custom"` - `description: string` - `input_schema: BetaManagedAgentsCustomToolInputSchema` JSON Schema for custom tool input parameters. - `type: "object"`… Create Agent Claude Developer Platform · in the page api/beta/agents/create …elp it decide when to use the tool. minLength: 1 - `input_schema: BetaManagedAgentsCustomToolInputSchema` JSON Schema defining the expected input parameters for the tool. - `… List Agents Claude Developer Platform · in the page api/beta/agents/list …- `type: "custom"` - `description: string` - `input_schema: BetaManagedAgentsCustomToolInputSchema` JSON Schema for custom tool input parameters. - `type: "object"`… Get Agent Claude Developer Platform · in the page api/beta/agents/retrieve …- `type: "custom"` - `description: string` - `input_schema: BetaManagedAgentsCustomToolInputSchema` JSON Schema for custom tool input parameters. - `type: "object"`… Update Agent Claude Developer Platform · in the page api/beta/agents/update …elp it decide when to use the tool. minLength: 1 - `input_schema: BetaManagedAgentsCustomToolInputSchema` JSON Schema defining the expected input parameters for the tool. - `… Versions Claude Developer Platform · in the page api/beta/agents/versions …- `type: "custom"` - `description: string` - `input_schema: BetaManagedAgentsCustomToolInputSchema` JSON Schema for custom tool input parameters. - `type: "object"`… List Agent Versions Claude Developer Platform · in the page api/beta/agents/versions/list …- `type: "custom"` - `description: string` - `input_schema: BetaManagedAgentsCustomToolInputSchema` JSON Schema for custom tool input parameters. - `type: "object"`… Messages Claude Developer Platform · in the page api/beta/messages …- `type: optional "custom" or null` - `input_schema: object` [JSON schema](https://json-schema.org/draft/2020-12) for this tool's input.… Batches Claude Developer Platform · in the page api/beta/messages/batches …`type: optional "custom" or null` - `input_schema: object` [JSON schema](https://json-schema.org/draft/2020-12) for this tool's input.… Create a Message Batch Claude Developer Platform · in the page api/beta/messages/batches/create …`type: optional "custom" or null` - `input_schema: object` [JSON schema](https://json-schema.org/draft/2020-12) for this tool's input.… Retrieve Message Batch results Claude Developer Platform · in the page api/beta/messages/batches/results …- `type: optional "custom" or null` - `input_schema: BetaResponseToolInputSchema` [JSON schema](https://json-schema.org/draft/2020-12) for this tool…