cross-repo-synthesizer

cross-repo-synthesizer is an agent for Claude Code from bdfinst/agentic-dev-team. It costs 45 tokens per session (896 once invoked), scanned A, original, MIT.

An analysis agent that combines security findings from multiple code repositories into named attack-chain narratives. It describes how separate weaknesses, shared credentials, and service connections could be used together.

In plain words
What is it for?
It helps produce reports with affected repositories, shared-credential evidence, service diagrams, and step-by-step attack chains.
Why use it?
It gives teams a cross-repository view instead of leaving related findings in separate reports. It cites the source finding for each step and does not perform detection itself.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter.

Part of the security-assessment plugin — 3 skills, 5 commands, 13 agents shipped together

Good fit It helps produce reports with affected repositories, shared-credential evidence, service diagrams, and step-by-step attack chains.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/bdfinst/agentic-dev-team/cross-repo-synthesizer
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.

Clone the repo
git clone --depth 1 https://github.com/bdfinst/agentic-dev-team

Made for: Claude Code.

Or install security-assessment, the plugin that ships this one along with the rest of its 3 skills, 5 commands, 13 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cross-repo-synthesizer

README.md
[![agentmods](https://agentmods.dev/badge/agents/bdfinst/agentic-dev-team/cross-repo-synthesizer.svg)](https://agentmods.dev/agents/bdfinst/agentic-dev-team/cross-repo-synthesizer)
Your own site
<a href="https://agentmods.dev/agents/bdfinst/agentic-dev-team/cross-repo-synthesizer"><img src="https://agentmods.dev/badge/agents/bdfinst/agentic-dev-team/cross-repo-synthesizer.svg" alt="Measured on agentmods" height="20"></a>
Per session 45 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 896 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00045 $0.00896
Opus 5 $0.00023 $0.00448
Sonnet 5 $0.00009 $0.00179
Haiku 4.5 $0.00005 $0.00090

Measured 3d ago against content hash 17d97cea1b94, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

cross-repo-synthesizer 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 3d ago.

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.

plugins/security-assessment/agents/cross-repo-synthesizer.md · 86 lines

How it starts

The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cross-Repo Synthesizer

Read aggregated data from multiple repos. Name cross-repo attack chains explicitly. Cite findings; do not invent.

Invoked by /cross-repo-analysis after service-comm-parser.py and shared-cred-hash-match.py have produced their outputs.

Context needs: artifact-stream

Inputs

  • One RECON artifact per target repo (memory/recon-<slug>.json)
  • Per-repo disposition register (memory/disposition-<slug>.json) if /security-assessment ran per repo; else unified findings directly
  • Service-comm Mermaid diagram (stdout from service-comm-parser.py)
  • Shared-cred SARIF (stdout from shared-cred-hash-match.py)

Output

memory/cross-repo-analysis-<assessment-slug>.md:

  1. Overview — 1 paragraph naming target repos and analysis scope.
  2. Shared credentials — table: hash prefix, count of repos affected, SHA-256 log reference.
  3. Inter-service communication diagram — Mermaid block from service-comm-parser.py embedded byte-identical.
  4. Named attack chains — 3-10 chains, each with:
    • Short name (e.g. "Credential reuse → privileged NATS → model endpoint")
    • Findings cited by rule_id + file:line
    • Step-by-step walk (attacker action → state → next action)
    • Repos involved + each service's role
  5. Systemic patterns — 1-3 paragraphs on organizational tendencies (e.g. "no repo uses a secrets manager; all use env-file credentials").
  6. Defensive priorities — ranked, with cross-repo coordination notes.

Procedure

  1. Load every RECON, the Mermaid (read node + edge labels), and shared- cred SARIF.
  2. Build the cross-index:
    • Credential hash → repos + files + lines
    • Service → role (publisher / subscriber / both) per NATS subject
    • Service → entry points with auth status
    • Service → service dependencies (from Mermaid edges)
  3. Name attack chains. Candidate patterns: credential-reuse, unauthenticated- messaging, model-confusion, feature-poisoning. A chain is meaningful only when ≥ 2 repos are involved AND the chain advances the attacker's position. If none qualify, say so — do not invent.
  4. Identify systemic patterns (≥ 2 repos exhibiting the same tendency).
  5. Rank defensive priorities:
    • P1: fixes that break ≥ 2 named chains
    • P2: fixes that address a systemic pattern
    • P3: per-repo fixes

Read the full file on GitHub · 86 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. 3d ago First seen · 86 lines · 45 tokens per session scan A 17d97cea1b94

Subscribe to this mod's changes

cross-repo-synthesizer is an agent published in the GitHub repository bdfinst/agentic-dev-team (280 stars, last pushed 3d ago), licensed MIT. It adds 45 tokens to every session and 896 once invoked, about $0.0002 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 2026-09-05.

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