Aviationstack is a scalable REST API for real-time flight tracking, historical flight data, airport info, and global aviation data.
from $49.99/mo
About Herald
What is Herald?
Herald is an AI-powered Site Reliability Engineer (AI SRE) that proactively detects potential issues in your software system before they escalate into alerts or customer complaints. It builds a context graph of your observability data, codebase, CI/CD, docs, and dependencies to understand what normal looks like, then flags anomalies and investigates them across code, infrastructure, and telemetry.
What problem does it solve?
Traditional monitoring requires setting thresholds and writing runbooks for every known failure mode. Herald eliminates this by using custom anomaly detection per data stream, so it can spot novel incidents that never had a runbook. It then runs multiple hypotheses simultaneously to deliver root cause analyses (RCAs) in minutes, reducing downtime and toil for engineering teams.
Who is it for?
Herald is built for engineering teams—from SREs and DevOps to backend developers—who want to reduce alert fatigue and speed up incident response. It's ideal for organizations with complex stacks where manual monitoring and runbook maintenance are burdensome. It may be overkill for small projects with minimal traffic or where no dedicated engineering team exists.
Real use cases
Herald excels at detecting HTTP 500 spikes, correlating error signals across services, and tracing root causes like API timeouts or schema drift. It's particularly valuable for SaaS companies with frequent releases, where novel failures are common and speed to resolution is critical. With 70%+ accuracy on novel incidents and results in days, not months, it helps teams ship faster with confidence.
Key features
- Predictive issue detection — Uses custom anomaly detection per data stream to catch issues before alerts fire.
- Root cause analysis — Investigates across code, infrastructure, and telemetry, delivering RCAs in minutes.
- No runbooks required — Handles novel incidents without needing pre-documented workflows.
- Context graph — Learns your stack (observability, codebase, CI/CD) for grounded, token-efficient analysis.
- Developer Q&A — Answers development and system health queries directly.
- Slack/Teams integration — Collaborates via chat platforms for team visibility.
- SAML SSO & usage analytics — Enterprise-grade security and monitoring for teams.
SaaSpartout Score
7.3
/10
Editorial score from our review methodology — not user ratings.
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Herald Pricing
Herald pricing: from $0/mo.
For comparison: the median starting price in Developer Tools is $19.99/month, measured across 301 tools we track. See the full SaaS Pricing Index →
Hobby (Free)
$0/month — No credit card required, includes Herald CLI Agent, local integrations, limited Agent requests.
Individual (Paid)
Paid tier — Includes everything in Hobby, plus extended Agent requests, root cause analysis, suggested resolutions, predictive issue detection, and developer Q&A.
Teams (Paid)
Paid tier — Includes everything in Individual, plus Herald Cloud Agent, cloud integrations, Slack/Teams collaboration, team-wide Agent training, SAML SSO, usage analytics, and centralized team billing.
Enterprise (Custom)
Contact sales — Includes everything in Teams, plus pooled usage, enterprise terms & DPA, invoice/PO billing, custom integrations, bring your own model/cloud, designated customer success.
Free trial available with Hobby plan; no credit card required.
Frequently asked questions
How much does Herald cost?
Herald offers a free Hobby plan at $0/month, plus paid Individual, Teams, and Enterprise plans. For exact pricing, visit herald.dev/pricing.
Is Herald really free?
Yes, the Hobby plan is free and requires no credit card. It includes the Herald CLI Agent, local integrations, and limited Agent requests.
Who is Herald best for?
Herald is best for engineering teams (SREs, DevOps, backend developers) who want to catch issues before customers are affected, especially those with complex stacks where manual monitoring is burdensome.
How does Herald work?
Herald builds a context graph of your codebase, observability data, and CI/CD to understand your 'normal'. It detects anomalies per data stream, investigates them via multiple hypotheses, and delivers a root cause analysis in minutes—no runbooks needed.
Does Herald require threshold setup?
No. Herald uses custom anomaly detection models for each data stream, so you don't need to set thresholds manually.
What are top alternatives to Herald?
Alternatives include traditional monitoring tools like Datadog, PagerDuty, or New Relic, but Herald differentiates with proactive AI-driven investigation and no-runbook handling of novel incidents.
