Files
rengine/mcp/errors.py
T
Yogesh OjhaandClaude Opus 5 2cb8d73280 style: strip explanatory comments across the codebase
The comment rule in CLAUDE.md is one line maximum, never narration: no
multi-line blocks, no module-header explainers, no sentences that explain or
justify the code to the reader. The tree had drifted a long way from it, and
most of the drift is mine.

Removed:
  232  lines of multi-line comment blocks
  203  single-line comments that argued instead of stating
  154  comments joined by so/because/otherwise/rather-than
  143  narrating comments in the frontend
  112  test docstrings (the test name already says what it asserts)
   25  test module docstrings and 25 decorative section dividers

Collapsed:
  324  multi-line docstrings to one factual line
  271  one-line docstrings that had a justifying clause bolted on

Kept: functional directives, section dividers, short field labels, alembic
revision headers, and the eight FastAPI route docstrings that render in /docs.
Where a fact was load-bearing it is in CLAUDE.md, which is where it belongs.

284 python tests and 34 frontend tests pass, ruff and ruff-format clean across
ten packages, svelte-check 0 errors, prettier and eslint clean, app.main imports.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013dKUV96WkQQETZBMoAG98C
2026-09-11 14:11:23 +05:30

57 lines
1.1 KiB
Python

"""Errors an MCP call can raise, and the JSON-RPC codes they map to."""
from __future__ import annotations
PARSE_ERROR = -32700
INVALID_REQUEST = -32600
METHOD_NOT_FOUND = -32601
INVALID_PARAMS = -32602
INTERNAL_ERROR = -32603
UNAUTHORIZED = -32001
FORBIDDEN = -32002
class McpError(Exception):
code = INTERNAL_ERROR
def __init__(self, message: str, data: dict | None = None):
super().__init__(message)
self.message = message
self.data = data or {}
class ProtocolError(McpError):
code = INVALID_REQUEST
class MethodNotFoundError(McpError):
code = METHOD_NOT_FOUND
class InvalidParamsError(McpError):
code = INVALID_PARAMS
class AuthError(McpError):
"""No usable token on the request."""
code = UNAUTHORIZED
class CapabilityError(McpError):
"""The token is valid but may not do this."""
code = FORBIDDEN
class ScopeError(McpError):
"""The token is valid but the resource is outside its project."""
code = FORBIDDEN
class ToolError(McpError):
"""A tool ran and could not answer."""
code = INTERNAL_ERROR