Every event is SHA-256 hash-chained. Tampering breaks the chain. The audit log you can actually prove.
No credit card required
Every event is SHA-256 hash-chained at write time. Field tampering, deletion, reordering, and retroactive insertion all leave an arithmetic trace.
Verify your chain any time from the SDK or a one-liner curl. Pin the tip externally and you can prove integrity without trusting our API.
Tag every event with a groupId — your customer's tenant id. One Evelmo account powers per-tenant activity views, filters, and exports.
npm install evelmo, add three lines, done. No infrastructure to provision, no schema to design.
TypeScript-first with full type safety. Idempotent retries via the Idempotency-Key header. Predictable errors, no magic.
Filter by actor, action, target, group, or date range from the dashboard. Pagination, wildcard matching, and full metadata inspection included.
Start logging activity in your app with minimal code.
import { Evelmo } from 'evelmo';
const evelmo = new Evelmo(process.env.EVELMO_API_KEY);
await evelmo.log({
action: 'user.invited',
actor: { id: 'usr_123', name: 'John' },
target: { id: 'usr_456', type: 'user' }
});Three problems Evelmo solves better than a text file or a DIY table.
Embed activity logs in your product
Ship an “Activity” tab to your customers without building a backend. Tag each event with their tenant id via groupId — they see only what belongs to them. One API, one bill, no schema to design.
SOC 2, HIPAA, GDPR Article 30 evidence
Cryptographic integrity, retention controls, and on-demand verification map directly to the logging-and-monitoring requirements auditors actually check — SOC 2 CC7.2, HIPAA §164.312(b), GDPR Article 30 — covered in one integration.
Security forensics
When something goes wrong, reconstruct the exact sequence of events — actor, target, IP, user agent, metadata — with filterable, verifiable history. You'll know if the evidence was touched.
Start free. Scale when you're ready.
Perfect for side projects and MVPs
For growing teams shipping fast
Billed $490/year
For teams that need cryptographic proof
Billed $1,990/year
For mid-market teams with procurement and compliance
Custom contract — priced on volume & term
Need on-prem, high-volume, or non-standard contract terms? Contact us.