pip install agent-friend
agent-friend fix server.json > server_fixed.json

agent-friend fix tools.json > tools_fixed.json

# agent-friend fix v0.59.0
#
#   Applied fixes:
#     ✓ create-page -> create_page (name)
#     ✓ Stripped "This tool allows you to " from search description
#     ✓ Trimmed get_database description (312 -> 198 chars)
#     ✓ Added properties to undefined object in post_page.properties
#
#   Summary: 12 fixes applied across 8 tools
#   Token reduction: 2,450 -> 2,180 tokens (-11.0%)

agent-friend grade --example notion

# Overall Grade: F
# Score: 19.8/100
# Tools: 22 | Tokens: 4483

agent-friend validate tools.json

# agent-friend validate — schema correctness report
#
#   ✓ 3 tools validated, 0 errors, 0 warnings
#
#   Summary: 3 tools, 0 errors, 0 warnings — PASS

agent-friend audit tools.json

# agent-friend audit — tool token cost report
#
#   Tool                    Description      Tokens (est.)
#   get_weather             67 chars        ~79 tokens
#   search_web              145 chars       ~99 tokens
#   send_email              28 chars        ~79 tokens
#   ──────────────────────────────────────────────────────
#   Total (3 tools)                        ~257 tokens
#
#   Format comparison (total):
#     openai        ~279 tokens
#     anthropic     ~257 tokens
#     google        ~245 tokens  <- cheapest
#     mcp           ~257 tokens

from agent_friend import tool

@tool
def get_weather(city: str, units: str = "celsius") -> dict:
    """Get current weather for a city."""
    return {"city": city, "temp": 22, "units": units}

get_weather.to_openai()      # OpenAI function calling
get_weather.to_anthropic()   # Claude tool_use
get_weather.to_google()      # Gemini
get_weather.to_mcp()         # Model Context Protocol
get_weather.to_json_schema() # Raw JSON Schema

from agent_friend import tool, Toolkit

kit = Toolkit([search, calculate])
kit.to_openai()   # Both tools, OpenAI format
kit.to_mcp()      # Both tools, MCP format

- uses: 0-co/agent-friend@main
  with:
    file: tools.json
    validate: true        # check schema correctness first
    threshold: 1000       # fail if total tokens exceed budget
    grade: true           # combined report card (A+ through F)
    grade_threshold: 80   # fail if score < 80

agent-friend grade tools.json --threshold 90  # exit code 1 if below 90
agent-friend audit tools.json --threshold 500  # exit code 2 if over budget

# .pre-commit-config.yaml
repos:
  - repo: https://github.com/0-co/agent-friend
    rev: v0.209.0
    hooks:
      - id: agent-friend-grade      # fail if score < 60 (default)
      - id: agent-friend-validate   # fail on any structural error

      - id: agent-friend-grade
        args: ["--threshold", "80"]  # fail if score < 80

mkdir -p ~/.claude/hooks
curl -sL https://0-co.github.io/company/claude-code-hook.sh -o ~/.claude/hooks/af-check.sh
chmod +x ~/.claude/hooks/af-check.sh

{
  "hooks": {
    "ConfigChange": [{
      "matcher": ".",
      "hooks": [{"type": "command", "command": "bash ~/.claude/hooks/af-check.sh"}]
    }]
  }
}

# Grade tools from a JSON body
curl -X POST http://89.167.39.157:8082/v1/grade \
  -H 'Content-Type: application/json' \
  -d '[{"name": "search", "description": "Search the web", "parameters": {"type": "object", "properties": {"query": {"type": "string", "description": "Search query"}}, "required": ["query"]}}]'

# Grade a remote schema by URL
curl "http://89.167.39.157:8082/v1/grade?url=https://example.com/schema.json"

# CI pass/fail check (200=pass, 422=fail)
curl "http://89.167.39.157:8082/v1/check?url=https://example.com/schema.json&threshold=80"

# README badge redirect (shields.io)
curl -L "http://89.167.39.157:8082/badge?repo=owner/repo-name"