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Documentation Index

Fetch the complete documentation index at: https://mintlify.com/flagForgeCTF/flagForge/llms.txt

Use this file to discover all available pages before exploring further.

When you find the answer to a FlagForge challenge, you submit it as a flag — a specially formatted string that the platform validates against the correct answer. A correct submission records your score, while an incorrect one lets you keep trying without penalty.

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Flag format

All flags in FlagForge follow a consistent format: 
flag{...}
The content inside the curly braces varies by challenge. It could be a word, a hash, a sentence, or a UUID — the challenge description and any files you analyze will lead you to the right value. Examples: 
flag{hello_world}
flag{1bab71b8-117f-4dea-a047-340b72101d7b}
flag{H3ll0_W0r1d}
Flags are case-sensitive. Submit the flag exactly as you find it, including capitalization.

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How to submit a flag

1

Open the challenge

Go to the Problems page and click the challenge you want to submit. This opens the challenge detail page with the description, any attached files or links, and the submission form.
2

Find the flag

Work through the challenge. Exploit the vulnerability, analyze the file, or decode the cipher until you find a string that matches the flag{...} format.
3

Enter the flag

Scroll to the submission box at the bottom of the challenge page. Type or paste your flag into the input field.
4

Click Submit

Click the Submit button. FlagForge validates your flag and immediately returns a result.

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What happens on correct submission

When you submit the correct flag, FlagForge:
  1. Records a solved entry linking your account to the challenge.
  2. Awards the challenge’s full base point value to your total score.
  3. Updates your position on the leaderboard.
You receive a success response with the points you earned: 
{
  "message": "Right! Congratulations on solving the challenge!",
  "points": 250,
  "success": true,
  "correct": true
}
The points value is the challenge’s full base point value.

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What happens on incorrect submission

If your flag is wrong, FlagForge returns an error response and you can try again: 
{
  "message": "Incorrect flag. Try again!",
  "success": false,
  "correct": false
}
There is no limit on the number of attempts and no score penalty for incorrect submissions — only hint reveals deduct points. Keep refining your approach until you find the right flag.

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Point calculation

Scoring in FlagForge works in two separate steps:
  1. Hint unlocks deduct points immediately. Each time you reveal a hint, its pointsDeduction value is subtracted from your total score right away.
  2. Solving a challenge adds the full base point value. When you submit the correct flag, you earn the challenge’s full base points regardless of how many hints you revealed.
For example, if a challenge is worth 300 points and you revealed two hints costing 25 and 50 points:
  • Revealing hint 1: −25 points from your total
  • Revealing hint 2: −50 points from your total
  • Solving the challenge: +300 points to your total
Net change: +225 points
Hint deductions are applied immediately when you reveal a hint. The submission itself awards the challenge’s full base value.

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Practice mode

If you have already solved a challenge and want to try it again — for example, to test a different approach or verify your methodology — you can submit in practice mode. Practice mode submissions are not scored and do not affect your total score or leaderboard position. The response indicates whether your flag is correct without recording a new solution: 
{
  "message": "Practice mode: Correct flag.",
  "correct": true,
  "practice": true
}
To use practice mode, append ?practice=true to the challenge submission URL. On the challenge page, this is handled automatically once a challenge is marked as solved for your account.

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