mcpbeat

Add Error Code

google/add-error-code

How to add a new error code in BoringSSL.

267 tokens
context cost
the whole folder, loaded on every use
1
files
instructions only
0
copies elsewhere
how many repositories repackaged it
2242
stars on the repo
on the repository, not the skill itself

Install

one command, takes just this skill from the repository 
npx skills add https://github.com/google/boringssl --skill add-error-code

The instruction itself

2 sections, as written by the author

Adding a New Error Code

To add a new error code, you only need to use it in the source code and then run the error generation script. The script will automatically define it in the header and update the error database.

Steps

  • Use the Error Code:
  • Use the new error code directly in your C/C++ source file (e.g., EVP_R_NEW_ERROR_CODE). It must start with the correct library prefix (e.g., EVP_R_, SSL_R_).
  • Run the Error Generator:
  • Run util/make_errors.go, passing the lowercase library name (e.g., evp, ssl).
  • Example:
        go run util/make_errors.go evp
  • The script will automatically:
  • Find the new error code in the source.
  • Assign it a numeric value.
  • Add the #define to the appropriate header in include/openssl.
  • Update the .errordata file in crypto/err.

How to use it

Copy the folder

Take google/add-error-code from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.