fast-agent

Source#

• Repository: evalstate/fast-agent
• Last source update: 2026-04-04
• Last verified: 2026-04-05

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: fast-agent-repo-derived-worker
name: fast-agent Repo-Derived Worker
version: 1.0.0
source_registry_url: https://worker.md/registry/fast-agent/
source_repository: https://github.com/evalstate/fast-agent
repository_default_branch: main
repository_language: Python
repository_license: Apache-2.0
repository_updated_at: 2026-04-04
worker_mode: tool-gateway-worker
derivation_method: github_repository_metadata_plus_raw_readme
derivation_confidence: 0.95
derived_on: 2026-04-05
tags:
  - acp
  - agent
  - agent-framework
  - agent-skills
  - cli
  - mcp
---

# fast-agent Repo-Derived Worker

## Repo-derived summary
- Registry summary: Code, Build and Evaluate agents - excellent Model and Skills/MCP/ACP Support
- Repository description: Code, Build and Evaluate agents - excellent Model and Skills/MCP/ACP Support
- Stars (snapshot): 3,737
- Primary language: Python
- Worker mode classification: tool-gateway-worker

## Extracted from
- https://github.com/evalstate/fast-agent
- https://github.com/evalstate/fast-agent/blob/main/README.md
- https://llmindset.co.uk/resources/fast-agent/
- https://docs.astral.sh/uv/

## Evidence notes (from repository text)
- README summary paragraph: > [!TIP] > Please see https://fast-agent.ai for latest documentation.
- > Please see https://fast-agent.ai for latest documentation.
- **`fast-agent`** is a flexible way to interact with LLMs, excellent for use as a Coding Agent, Development Toolkit, Evaluation or Workflow platform.
- # Code with Codex (agents optimized for OpenAI)
- It's recommended to install **`fast-agent`** to set up the shell aliases and other tooling.
- # Run fast-agent with opus, shell support and subagent/smart mode

## Installation hints found in README
- `pip install fast-agent-mcp # install fast-agent!`
- `uv pip install fast-agent-mcp # install fast-agent!`
- `uv tool install -U fast-agent-mcp`

## worker.md contract (derived starter)
Purpose: Expose repository-supported tool/server capabilities behind a bounded worker interface.

### Input schema
```json
{
  "type": "object",
  "additionalProperties": false,
  "required": [
    "request_id",
    "operation",
    "payload"
  ],
  "properties": {
    "request_id": {
      "type": "string"
    },
    "operation": {
      "type": "string"
    },
    "payload": {
      "type": "object"
    }
  }
}
```

### Output schema
```json
{
  "type": "object",
  "additionalProperties": false,
  "required": [
    "request_id",
    "status",
    "result"
  ],
  "properties": {
    "request_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: request_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: fast-agent-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/fast-agent/

Source URL: https://github.com/evalstate/fast-agent