58 lines
2.4 KiB
Markdown
58 lines
2.4 KiB
Markdown
# MCP Tasks Extension
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This repository contains the official [Model Context Protocol](https://modelcontextprotocol.io) Tasks extension (`io.modelcontextprotocol/tasks`), based on [SEP-2663](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2663).
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## Overview
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This extension defines the **Tasks** primitive for the Model Context Protocol (MCP). Tasks are durable state machines that carry information about the underlying execution state of a request, enabling requestor polling and deferred result retrieval. Each task is uniquely identifiable by a receiver-generated **task ID**.
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Tasks are useful for:
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- Representing expensive computations and batch processing requests
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- Integrating seamlessly with external job/workflow APIs
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- Enabling call-now, fetch-later execution patterns
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**Extension Identifier:** `io.modelcontextprotocol/tasks`
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## Schemas
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| Version | Status | TypeScript | JSON Schema |
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| --- | --- | --- | --- |
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| `2026-07-28` | Stable | [`schema.ts`](schema/2026-07-28/schema.ts) | [`schema.json`](schema/2026-07-28/schema.json) |
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| `draft` | Development | [`schema.ts`](schema/draft/schema.ts) | [`schema.json`](schema/draft/schema.json) |
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Released schema directories are immutable snapshots with version-specific JSON Schema identifiers. Development and schema generation target `schema/draft/` only. To create a release snapshot from the current draft:
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```bash
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npm run snapshot:schema -- YYYY-MM-DD
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```
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## Development
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### Schema Generation
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The draft JSON Schema is auto-generated from the TypeScript type definitions using [ts-to-zod](https://github.com/fabien0102/ts-to-zod) and Zod's `toJSONSchema()`. Do not hand-edit `schema.json` or `generated/schema.ts`.
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```bash
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# Generate draft Zod schemas and JSON Schema from schema.ts
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npm run generate:schemas
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# Verify TypeScript compiles and draft generated files are up to date
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npm run check:schema
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```
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## Governance
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This repository follows the [Model Context Protocol Governance](https://modelcontextprotocol.io/community/governance) process. See [MAINTAINERS.md](MAINTAINERS.md) for the list of maintainers specific to this repository.
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## Policies
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This repository follows the Model Context Protocol project policies:
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- [Code of Conduct](CODE_OF_CONDUCT.md)
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- [Contributing Guidelines](CONTRIBUTING.md)
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- [Security Policy](SECURITY.md)
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## License
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This project is licensed under the Apache License 2.0. See [LICENSE](https://github.com/modelcontextprotocol/ext-tasks/blob/main/LICENSE) for details.
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