AgentMon Start vs Agent Flight Recorder: monitoring vs evidence.
Codenotary's AgentMon and Agent Flight Recorder record what AI agents do — but they answer different questions. AgentMon asks "is my agent behaving?" Agent Flight Recorder asks "can you prove what it did?" Here's an honest breakdown so you can pick the right instrument.
| AgentMon Start (Codenotary) | Agent Flight Recorder | |
|---|---|---|
| Primary job | Agent monitoring: watch coding-agent sessions, flag rogue behavior, control token spend. "Detect and stop rogue AI agents before it's too late." | Tamper-evident evidence: an append-only, hash-chained ledger that proves what your agent did after the fact. The black box, not the radar. |
| Are the agent records tamper-evident? | Not claimed. AgentMon Start stores snapshots in mutable local SQLite on your machine. Codenotary's tamper-evident technology (immudb, Merkle proofs, 40M+ downloads) is real — but their AgentMon launch pages make no tamper-evidence claim about the agent records themselves. An auditor asking "prove this log wasn't edited" gets no answer there. | Yes — it's the whole product. Every action record is SHA-256 hash-chained to the previous one, append-only, with one-click server-side verification. Verify any record publicly, no signup. |
| Public, demo-able verification | None found (checked 2026-10-12). No public page where you can paste a record and check the chain. | /verify: paste ledger JSON → VERIFIED or BROKEN verdict naming the exact failed link, in ~30 seconds. |
| How it's instrumented | No SDK to add — reads the session logs coding agents already write. Supports 16+ agents/harnesses/LLMs (Claude Code, Claude Desktop, Codex, GitHub Copilot, Cursor, Gemini CLI, Goose). | API/SDK-first — POST each action to /v1/actions; any framework (LangGraph, CrewAI, n8n, custom stacks) in about 5 lines of code. Ideal for custom agents their log-parsing can't see. |
| Cost visibility | Their headline strength. Spend by session, model, and team; alerts every 60 seconds on cost thresholds, spikes, and error rates; savings recommendations with evidence ("$720 spent vs $650 budget"). | Token costs can be logged as record metadata, but cost control is not the headline — evidence is. |
| EU AI Act Article 12 record-keeping | No explicit Article 12 record-keeping claim found on AgentMon pages (checked 2026-10-12). | Explicitly positioned for Article 12 traceability — see the EU AI Act logging guide. |
| Compliance exports & certificates | Dashboards, team fleet views, alert history. No signed integrity certificates or audit-report exports advertised. | SOC2-shaped audit reports, CSV evidence exports, and HMAC-signed Tamper-Seal certificates publicly verifiable at /attest/<id> (Pro/Team). |
| Data location | Local-first: data stays on your machine by default; team dashboard sync is an explicit opt-in. Genuinely privacy-friendly. | Cloud-hosted authoritative ledger with independent verification endpoints (badge, chain-status API, attestations). |
| Pricing | $15 per user per month (their launch release, dev walkthrough, and press all agree); first 3 devices free for 6 months. Note: their homepage banner says $15/device/month — their own pages disagree on per-user vs per-device, worth confirming before you buy. Enterprise tier: pricing not published. | Free $0 (1 agent, 1,000 actions/mo) · Pro $49/mo (10 agents, 100k actions, exports, alerts) · Team $149/mo (unlimited, 5 seats). One price per tier, no user/device ambiguity. |
| Scale & heritage | Serious: immudb lineage (40M+ downloads, US patents), 7M+ agent interactions monitored per day, ~210K anomalies detected daily, enterprise customers (British Army, Siemens, Porsche, tier-1 banks), AWS Marketplace. | Solo-built, launched October 2026. No enterprise logos, no millions-of-events scale — the honest trade for a product built around one defensible property instead of a monitoring suite. |
| Independent reviews | None found anywhere as of 2026-10-12 — the SMB product launched 2026-09-29. No G2/Capterra/Trustpilot end-user reviews located. | Also new — no independent reviews yet either. This page will be updated when that changes. |
When to pick which
Pick AgentMon Start if you run coding agents (Claude Code, Cursor, Copilot…), want cost visibility and session forensics without adding an SDK, and prefer your telemetry to stay on your own machine. Their immudb heritage and 7M-interactions/day scale are real assets.
Pick Agent Flight Recorder if you need to prove what a custom agent did — to a customer, an auditor, or a regulator. Hash-chained, append-only records; public verification anyone can re-run; signed certificates and audit-shaped exports. If your agent moves money, touches customer data, or sits under logging obligations, evidence beats dashboards.
Run both if you're serious: AgentMon for day-to-day monitoring and cost control, Agent Flight Recorder as the independent evidentiary tape. The integration is one API call per action at the tool-execution layer.
The one capability they visibly lack
Codenotary invented tamper-evident data storage with immudb — and yet AgentMon's own agent records aren't presented as tamper-evident anywhere on their site. The public hash-chain verify page is the single capability their product can't demo: try it in 30 seconds, no signup.
Frequently asked questions
Is AgentMon a direct competitor of Agent Flight Recorder?
Partially. Both record what AI agents do, but AgentMon is runtime monitoring and governance (watch, alert, control costs), while Agent Flight Recorder is forensic evidence (hash-chained, append-only, independently verifiable). Overlap: both watch coding-agent activity. The gap: only one of them can answer "prove the log wasn't edited."
Is AgentMon Start really $15 per user or per device?
Their launch press release, CTO walkthrough, and blog all say $15 per user per month with the first three devices free for six months — but their homepage banner says $15/device/month. It's a genuine discrepancy on their own pages (verified 2026-10-12); confirm before buying.
Does AgentMon offer tamper-evident agent records?
Codenotary's immudb is genuinely tamper-evident (Merkle proofs, 40M+ downloads) — but we found no tamper-evidence claim for AgentMon's own agent records on their launch pages; AgentMon Start stores them in mutable local SQLite. If that changes, this page will be updated.
Which is cheaper?
AgentMon Start at $15/user/mo is cheaper than Agent Flight Recorder Pro at $49/mo. The price premium buys a different property — evidence (verification, certificates, audit exports) — not more dashboards. Pick based on which question you need answered.
When was this comparison last checked?
2026-10-12, against codenotary.com, their Business Wire launch release (2026-09-29), and the CTO's dev.to walkthrough. AgentMon Start launched 13 days earlier, so this space moves fast — flag anything stale via the contact page.
Fairness note: every AgentMon fact above comes from Codenotary's own published pages and launch materials, checked live on 2026-10-12. Strengths are theirs; gaps are gaps in their public product pages, not in their company. This page is updated when their product changes. Spot something stale? Tell us.
Need proof, not just monitoring? Hash-chain your agent's actions free — 1 agent, 1,000 actions/month, verification included.