bub

Source#

• Repository: bubbuild/bub
• Last source update: 2026-10-11
• Last verified: 2026-10-11

Tags#

Integration notes#

Framework-level abstraction; derive bounded worker contracts from concrete tasks and APIs in docs/examples.

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: bub-repo-derived-worker
name: bub Repo-Derived Worker
version: 1.0.0
source_registry_url: https://worker.md/registry/bub/
source_repository: https://github.com/bubbuild/bub
repository_default_branch: main
repository_language: Python
repository_license: Apache-2.0
repository_updated_at: 2026-10-11
worker_mode: agent-orchestration-worker
derivation_method: github_repository_metadata_plus_raw_readme
derivation_confidence: 0.9
derived_on: 2026-10-11
tags:
  - agent-framework
  - agent-skills
  - ai-agents
  - cli
  - context-engineering
  - harness
---

# bub Repo-Derived Worker

## Repo-derived summary
- Registry summary: Bub it. Build it. A tiny agent runtime, composable with plugins.
- Repository description: Bub it. Build it. A tiny agent runtime, composable with plugins.
- Stars (snapshot): 1,684
- Primary language: Python
- Worker mode classification: agent-orchestration-worker

## Extracted from
- https://github.com/bubbuild/bub
- https://github.com/bubbuild/bub/blob/main/README.md
- https://pluggy.readthedocs.io/
- https://bub.build
- https://github.com/bubbuild/bub/blob/main/src/bub/framework.py

## Evidence notes (from repository text)
- README summary paragraph: Bub is a small Python runtime for building agents in shared environments. It started in group chats, where multiple humans and agents had to work in the same conversation without hidden state, hand-wavy memory, or framework-specific magic.
- A tiny agent runtime, composable with plugins.
- For local development, use `make install` instead so the website toolchain and `prek` hooks are installed too.
- - **Batteries included.** CLI, Telegram, tools, skills, and model execution ship with the core runtime. Use the defaults first, replace them later.
- - **Operator equivalence.** Humans and agents work inside the same runtime boundaries, with the same evidence trail and handoff model. No hidden operator class.
- Builtins are registered first. External plugins load after them. At runtime, later plugins take precedence. There are no framework-only shortcuts.

## Installation hints found in README
- No explicit package installation command detected in README text.

## 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: bub-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/bub/

Source URL: https://github.com/bubbuild/bub