attestd vs Offsend: Which is Better in 2026?
A comprehensive comparison of attestd and Offsend covering features, pricing, use cases, and which tool is the right choice for your needs.
⚡ Quick Verdict
Choose attestd if:
- →You want more affordable paid plans (from $19.99/mo)
- →You need risk_state: nvd-derived vulnerability classification (none → critical) or supply_chain.compromised: malicious-publish flag independent of cve history
Choose Offsend if:
- →You need single versioned .offsend.yml file defines the repo's ai context boundary or runtime gates for cursor, codex, windsurf, and claude code
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attestd vs Offsend: At a Glance
Pricing Comparison: attestd vs Offsend
Understanding the pricing differences between attestd and Offsend is crucial for making the right choice. Here's how their plans compare side by side.
Offsend Pricing
💡 Pricing takeaway: Both attestd and Offsend offer free tiers, making it easy to try before you buy. Compare the specific plans to find the best value for your use case.
Feature-by-Feature Comparison
Here's how every feature from attestd and Offsend stacks up.
What Makes Each Tool Unique
🔵 Unique to attestd
Features available in attestd but not in Offsend:
- ✓risk_state: NVD-derived vulnerability classification (none → critical)
- ✓supply_chain.compromised: malicious-publish flag independent of CVE history
- ✓typosquat: package-name integrity including AI-hallucinated package names
- ✓No code or repository access required
- ✓Python SDK and a documented curl quickstart
- ✓Free tier at 1,000 calls/month with the full response schema
🟣 Unique to Offsend
Features available in Offsend but not in attestd:
- ✓Single versioned .offsend.yml file defines the repo's AI context boundary
- ✓Runtime gates for Cursor, Codex, Windsurf, and Claude Code
- ✓AI-ignore-file sync for Copilot, Continue, Gemini, Aider, Cline, Roo, Zed, and Cody
- ✓`offsend check` content scanning for keys and tokens in files, diffs, and stdin
- ✓macOS app, browser extension, and GitHub Action for the non-repo paths
- ✓All checks run locally — no code is uploaded
Use Case Recommendations
Best for: attestd
attestd is a software-risk API designed to be called by CI/CD pipelines and by AI coding agents, which is a narrower and more interesting brief than a general vulnerability scanner. One request against a package name and version returns three signals that the company insists are independent by design: risk_state, an NVD-derived vulnerability classification with values from none through critical; supply_chain.compromised, a malicious-publish flag that is deliberately not derived from CVE history, so a package can return no known vulnerabilities and still be flagged as compromised; and typosquat, a package-name integrity check that catches both classic typosquats and names an LLM invented that never existed. That third signal is the one built specifically for the agent era — a coding agent that hallucinates a dependency name will happily install whatever squatter registered it, and a scanner that only scores known-good packages misses the failure mode entirely. The design principle stated throughout is determinism: NVD, CISA KEV and OSV all publish machine-readable data, but none of them yield a single condition a pipeline can branch on without interpretation, so attestd does the normalisation and returns something a script can act on. No repository or code access is required, there is a Python SDK, and the free tier is genuinely usable for evaluation and personal automation.
Ideal use cases:
- •Teams or individuals who need risk_state: nvd-derived vulnerability classification (none → critical)
- •Teams or individuals who need supply_chain.compromised: malicious-publish flag independent of cve history
- •Teams or individuals who need typosquat: package-name integrity including ai-hallucinated package names
- •Teams or individuals who need no code or repository access required
- •Anyone focused on security workflows
- •Anyone focused on api workflows
Best for: Offsend
Offsend is an open-source, local-first boundary layer that decides which files in a repository are allowed to enter AI context. The premise is that coding agents pull context through far more paths than the prompt box — they read workspace files, follow file references, run shell commands, call MCP tools, spawn subagents, and keep local transcripts — so a boundary has to cover all of those, and it has to cover uncommitted files too. The mechanism is a single `.offsend.yml` policy file that lives in the repo, so the rules are visible, reviewable in a PR, and versioned alongside the code rather than living in someone's editor settings. The CLI workflow is four commands: `offsend show` lists which sensitive paths may currently enter AI context, `offsend init` writes the policy, `offsend protect` adds the missing boundaries, and `offsend hook install` installs runtime gates. Those gates check prompts, file reads, shell commands, MCP arguments, and local transcripts for Cursor, Codex, Windsurf, and Claude Code, while ignore-file support covers GitHub Copilot, Continue, Gemini, LLM, Aider, Cline, Roo, Zed, and Cody. There is also `offsend check` for content scanning of keys and tokens in files, staged diffs, and stdin. The vendor is refreshingly precise about limits: it is defense-in-depth, not a guarantee, it is not a replacement for Gitleaks or TruffleHog on git history, and the CLI is explicitly labeled a research project not ready for production. Nothing is uploaded — checks run locally. Companion surfaces include a macOS app, a browser extension that masks sensitive values before browser prompts, a GitHub Action, and Radar, a research report on AI-context risk across public repos.
Ideal use cases:
- •Teams or individuals who need single versioned .offsend.yml file defines the repo's ai context boundary
- •Teams or individuals who need runtime gates for cursor, codex, windsurf, and claude code
- •Teams or individuals who need ai-ignore-file sync for copilot, continue, gemini, aider, cline, roo, zed, and cody
- •Teams or individuals who need `offsend check` content scanning for keys and tokens in files, diffs, and stdin
- •Anyone focused on open source workflows
- •Anyone focused on secret scanning workflows
🔐 Other Security & Privacy Tools to Consider
attestd and Offsend aren't the only options. Here are other popular tools in the same space:
Darktrace
AI cybersecurity with autonomous response
CrowdStrike Falcon
AI endpoint security and threat intelligence
Snyk
Developer security with AI vulnerability detection
GitGuardian
Automated secrets detection in code
Wiz
Cloud security with AI risk prioritization
ZeroDrift
Compliance firewall that validates, rewrites or blocks every AI output before it reaches anyone
Is one of these your tool?
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Frequently Asked Questions
Is attestd better than Offsend?
It depends on your needs. attestd offers 6 key features including risk_state: NVD-derived vulnerability classification (none → critical) and supply_chain.compromised: malicious-publish flag independent of CVE history, while Offsend provides 6 features including Single versioned .offsend.yml file defines the repo's AI context boundary and Runtime gates for Cursor, Codex, Windsurf, and Claude Code. attestd uses a freemium model with a free tier, while Offsend is open-source with free access available. Choose based on which features and pricing model align with your requirements.
Is attestd cheaper than Offsend?
Both tools are similarly priced, starting at $19.99/month. Both tools offer free tiers, so you can try each before committing. Always check the official websites for the most current pricing.
Can I use attestd and Offsend together?
Yes, many users combine attestd and Offsend in their workflow. attestd excels at risk_state: nvd-derived vulnerability classification (none → critical), while Offsend shines with single versioned .offsend.yml file defines the repo's ai context boundary. Using both allows you to leverage the strengths of each tool, though this means managing two subscriptions — though free tiers can help manage costs.
What's the main difference between attestd and Offsend?
While both are security & privacy tools, attestd emphasizes risk_state: nvd-derived vulnerability classification (none → critical), whereas Offsend is known for single versioned .offsend.yml file defines the repo's ai context boundary. The best choice depends on your specific workflow and feature priorities.
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