Developer Tools & DevOps is the largest API surface of any vertical on the network: 2,860 providers publishing 22,192 APIs.
For comparison, Artificial Intelligence indexes more providers — 5,046 — but only 17,174 APIs. Developer tooling companies ship roughly eight APIs each. AI companies ship three. The people who sell to developers publish more surface per company than anyone else in the catalog, which is what you would hope and not what you can assume.
The cohort
A cut across the vertical, by what the companies actually do:
| Band | Providers | Score range |
|---|---|---|
| Observability | New Relic (41 APIs), Dynatrace (34), Sentry (8) | 70.4 – 80.0 |
| Platform & runtime | Google Cloud Platform, Fastly (80), Inngest (8) | 73.3 – 76.4 |
| App building | Bubble (6 APIs) | 76.1 |
| API tooling | Postman (39 APIs) | 75.8 |
New Relic at 80.0 and Dynatrace at 79.2 are the two highest scores in the group, and both are observability vendors. That is not a coincidence. Companies whose product is telling you what your system is doing tend to be good at describing what their own system does. The discipline transfers.
What has shifted
Observability consolidated its lead. The vertical’s top scores are held by monitoring vendors, not by the cloud platforms they monitor. Selling visibility appears to force you to practice it.
Small surfaces score well. Sentry publishes 8 APIs and scores 70.4. Inngest publishes 8 and scores 76.4. Bubble publishes 6 and scores 76.1. Nothing in the rubric rewards volume — a tight, fully-described, callable surface beats a sprawling half-documented one, and this vertical is where that shows most clearly.
Related verticals overlap heavily. The network maps Developer Tools against Artificial Intelligence, Cybersecurity & Identity, Data & Analytics, and Robotics & Autonomous Systems. Most modern devtools companies are legitimately in two or three of those at once, and the cross-listings are real rather than tagging noise.
Where to start
Browse the full vertical at apis.io/industries/developer-tools/. Every provider entry links out to its OpenAPI specifications, JSON Schemas, governance rulesets and — where they exist — MCP servers and Arazzo workflows.
If you are assembling a stack, the observability band is the strongest place to start: highest scores, deepest contracts, and the most consistent artifact coverage in the vertical.
Takeaway
22,192 APIs across 2,860 companies, and the leaderboard belongs to the vendors who sell instrumentation rather than the platforms being instrumented. Developer tooling is the one vertical where the companies selling to engineers are, on the whole, held to the standard those engineers would apply.
Browse it all at apis.io/industries/developer-tools/.