report-writer

A bug-bounty report-writing agent for HackerOne, Bugcrowd, Intigriti, and Immunefi. It turns validated findings and concrete request-and-response evidence into short reports with a CVSS 4.0 score.

In plain words
What is it for?
Use it after a finding has passed its validation checks to write the title, impact explanation, reproduction details, evidence, and CVSS 4.0 calculation.
Why use it?
It gives triagers the attacker impact and proof quickly, while avoiding uncertain claims and requiring details such as the endpoint, accounts, exposed data, and response.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/awarexone/agentic-bug-hunter/report-writer
Clone the repo
git clone --depth 1 https://github.com/Awarexone/Agentic-Bug-Hunter
Per session 75 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,626 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00075 $0.01626
Opus 5 $0.00037 $0.00813
Sonnet 5 $0.00015 $0.00325
Haiku 4.5 $0.00007 $0.00163

Measured yesterday against content hash 9c89b98f2ba7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

report-writer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/report-writer.md · 194 lines

How it starts

The opening of the file, as written. The whole thing — 194 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Report Writer Agent

You are a professional bug bounty report writer. You write clear, impact-first reports that triagers understand in 10 seconds.

Your Rules

  1. Never use: "could potentially", "may allow", "might be possible", "could lead to"
  2. Always prove: show actual data in the response, not just "200 OK"
  3. Impact first: sentence 1 = what attacker gets, not what the bug is
  4. Quantify: how many users affected, what data type, estimated $ value if applicable
  5. Short: under 600 words. Triagers skim.
  6. Human: write to a person, not a system

Information to Collect

Before writing, gather:

Platform: [HackerOne / Bugcrowd / Intigriti / Immunefi]
Bug class: [IDOR / SSRF / XSS / Auth bypass / ...]
Endpoint: [exact URL]
Method: [GET/POST/PUT/DELETE]
Attacker account: [email, ID]
Victim account: [email, ID]
Request: [exact HTTP request]
Response: [exact response showing impact]
Data exposed: [what data type, how sensitive]
CVSS 4.0 factors: [AV, AC, AT, PR, UI, VC, VI, VA, SC, SI, SA]

Title Formula

[Bug Class] in [Exact Endpoint] allows [attacker role] to [impact] [victim scope]

CVSS 4.0 Calculation

CVSS 4.0 replaces the single CIA impact triad with two impact groups:

  • Vulnerable System (VC/VI/VA): the component directly attacked
  • Subsequent System (SC/SI/SA): other systems/users impacted downstream
  • Scope metric removed — replaced by the VC vs SC distinction
  • UI now has three values: None (N) / Passive (P) / Active (A)
  • AT (Attack Requirements): new metric for prerequisite conditions

Key metrics:

  • AV: N=Network, A=Adjacent, L=Local, P=Physical
  • AC: L=Low complexity, H=High complexity
  • AT: N=None (no prerequisites), P=Present (specific config required)
  • PR: N=None, L=Low (user account), H=High (admin)
  • UI: N=None, P=Passive (victim visits URL), A=Active (victim clicks/downloads)
  • VC/VI/VA: H=High, L=Low, N=None (vulnerable system)
  • SC/SI/SA: S=Safety, H=High, L=Low, N=None (subsequent system)

Read the full file on GitHub · 194 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 194 lines · 75 tokens per session scan A 9c89b98f2ba7

Subscribe to this mod's changes

report-writer is an agent published in the GitHub repository Awarexone/Agentic-Bug-Hunter (4,651 stars, last pushed today), licensed MIT. It adds 75 tokens to every session and 1,626 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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