harness-sdk

Source#

• Repository: strands-agents/harness-sdk
• Last source update: 2026-06-14
• Last verified: 2026-06-14

Tags#

Integration notes#

Repository is focused on tool/server interoperability; wrap in bounded worker contracts for production use.

worker.md example#

Starter worker.md contract mapped from this registry entry. Copy this file and adapt schemas, constraints, and statuses for your task.

---
id: harness-sdk-repo-derived-worker
name: harness-sdk Repo-Derived Worker
version: 1.0.0
source_registry_url: https://worker.md/registry/harness-sdk/
source_repository: https://github.com/strands-agents/harness-sdk
repository_default_branch: main
repository_language: Python
repository_license: Apache-2.0
repository_updated_at: 2026-06-14
worker_mode: agent-orchestration-worker
derivation_method: github_repository_metadata_plus_raw_readme
derivation_confidence: 0.95
derived_on: 2026-06-14
tags:
  - agent-framework
  - agentic
  - agentic-ai
  - agents
  - ai
  - ai-agents
---

# harness-sdk Repo-Derived Worker

## Repo-derived summary
- Registry summary: Build an agent harness and control it end-to-end. Open-source SDK for production AI agents in Python & TypeScript - any model, any cloud.
- Repository description: Build an agent harness and control it end-to-end. Open-source SDK for production AI agents in Python & TypeScript - any model, any cloud.
- Stars (snapshot): 6,125
- Primary language: Python
- Worker mode classification: agent-orchestration-worker

## Extracted from
- https://github.com/strands-agents/harness-sdk
- https://github.com/strands-agents/harness-sdk/blob/main/README.md
- https://github.com/strands-agents/harness-sdk/releases?q=python%2F&expanded=false
- https://github.com/strands-agents/harness-sdk/releases?q=typescript%2F&expanded=false
- https://strandsagents.com/docs/user-guide/concepts/model-providers/

## Evidence notes (from repository text)
- README summary paragraph: A model-driven approach to building AI agents in just a few lines of code.
- A model-driven approach to building AI agents in just a few lines of code.
- This monorepo contains the Python SDK, TypeScript SDK, documentation site, and supporting packages:
- | `strands-py/` | Python SDK: agent loop, model providers, tools (https://pypi.org/project/strands-agents/ · https://github.com/strands-agents/harness-sdk/releases?q=python%2F&expanded=false) |
- | `strands-ts/` | TypeScript SDK: agent loop, model providers, tools (https://www.npmjs.com/package/@strands-agents/sdk · https://github.com/strands-agents/harness-sdk/releases?q=typescript%2F&expanded=false) |
- | `strands-wasm/` | WebAssembly bindings for running Python tools from TypeScript agents |

## Installation hints found in README
- `pip install strands-agents strands-agents-tools`
- `pip install hatch`
- `npm install @strands-agents/sdk`

## worker.md contract (derived starter)
Purpose: Execute one orchestrated agent task as a bounded worker step.

### Input schema
```json
{
  "type": "object",
  "additionalProperties": false,
  "required": [
    "run_id",
    "task",
    "context"
  ],
  "properties": {
    "run_id": {
      "type": "string"
    },
    "task": {
      "type": "string"
    },
    "context": {
      "type": "object"
    }
  }
}
```

### Output schema
```json
{
  "type": "object",
  "additionalProperties": false,
  "required": [
    "run_id",
    "status",
    "result"
  ],
  "properties": {
    "run_id": {
      "type": "string"
    },
    "status": {
      "type": "string",
      "enum": [
        "ok",
        "retryable_error",
        "invalid_request",
        "invalid_output"
      ]
    },
    "result": {
      "type": "object"
    }
  }
}
```

### Constraints
- timeout_seconds: 30
- max_attempts: 2
- idempotency_key: run_id
- status_enum: [ok, retryable_error, invalid_request, invalid_output]
- notes: adapt to concrete APIs/classes documented in this repository before production use

## How this should be used
1. Treat this file as a repo-derived starter profile, not a claim of an official repository API contract.
2. Replace schemas with exact interfaces from code/docs you adopt.
3. Keep execution bounded and auditable using worker protocol constraints.

How to use#

• Save this as a worker spec file (for example: harness-sdk-my-task.worker.md).
• Replace the input/output schemas and purpose with your real bounded task.
• Enforce schema validation + timeout + retry policy in your runtime before production use.

Citation#

Reference URL: https://worker.md/registry/harness-sdk/

Source URL: https://github.com/strands-agents/harness-sdk