Decibel
Decibel (Decibel Partners) is an early-stage venture capital firm that invests in essential infrastructure software used by developers, data engineers and cybersecurity teams, describing itself as "early believers in technical founders." It keeps a deliberately small portfolio, says no to investments outside its expertise, and backs companies from the earliest stage across four sectors: Cybersecurity, Developer Platforms, Data / ML / AI Infrastructure and Autonomous Software. Founded by Jon Sakoda, it supports founders with a community of early adopters (CISOs, CTOs, VPs of Engineering and Data), GTM playbooks, founder advisors and talent help, and has a Managing Director for APAC and Japan. Exits on its portfolio page include Cmd (Elastic), Pachyderm (HPE), Pangea (CrowdStrike), Propelo (Harness), Blameless (Freshworks), Nira (Dropbox) and runZero (Accenture).
Decibel has 41 portfolio companies tracked on the APIs.io network, of which 25 (61%) publish APIs indexed here. The remaining 13 are tracked as profiles without a published API on the network.
Its highest-rated API providers on the network are Akuity, E2B, Censys, Scrunch, Sublime Security.
Portfolio on the Network
Portfolio companies that publish APIs indexed on APIs.io, grouped by their API Evangelist rating. Exemplar and Strong are expanded by default.
Strong 4 Solid coverage with minor gaps
Developing 6 Usable, with meaningful gaps to close
Emerging 4 Early or largely undocumented
Minimal 1 Almost no public developer surface
Rest of Portfolio
3 further portfolio companies that don’t yet have a provider page on the network.
Scroll for all 3
Properties
Portfolio
Where the firm publishes its investments
Cohort brief
Auto-generatedThe 25 portfolio companies with APIs in the catalog, backed by Decibel, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Contract Quality | 33.9 | 17.7 | +16.2 | 25 |
| Developer Ergonomics | 38.5 | 23.8 | +14.7 | 25 |
| Access Clarity | 40.9 | 26.5 | +14.4 | 25 |
| Operational Transparency | 22.2 | 13.2 | +9 | 25 |
| Discoverability | 66.2 | 58 | +8.2 | 25 |
| Contract Governance | 9.9 | 7 | +2.9 | 25 |
A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 12% | 15% | -3 |
| MCP server (first-party) | 12% | 13% | -1 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 8% | 12% | -4 |
| Security | 96% | 98% | -2 |
| Arazzo workflows | 12% | 2% | +10 |
| Governance rules | 19% | 18% | +1 |
mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.
- 1 Akuity
- 2 E2B
- 3 Censys
- 4 Scrunch AI
- 5 EmailRep
- 6 Root (fka Slim.ai)
- 7 SpecterOps
- 8 Push Security
- 9 Mallory
- 10 Spotnana
- 1 Scrunch AI {"score" => 59.2, "band" => "agent-ready"}
- 2 Spotnana {"score" => 41.9, "band" => "agent-ready"}
- 3 E2B {"score" => 39.5, "band" => "agent-native"}
- 4 EmailRep {"score" => 29.2, "band" => "agent-ready"}
- 5 Pixee {"score" => 27.5, "band" => "agent-aware"}
- 6 Root (fka Slim.ai) {"score" => 27, "band" => "agent-aware"}
- 7 SpecterOps {"score" => 27, "band" => "agent-aware"}
- 8 Censys {"score" => 26.7, "band" => "agent-aware"}
- 9 Akuity {"score" => 26.6, "band" => "agent-aware"}
- 10 Mallory {"score" => 22.7, "band" => "agent-aware"}
Coverage caveat. 20 of 25 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 2 November 2026, across 37080 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.
Source (apis.yml)
Work with this as data
Every firm here is available over the APIs.io API and to AI agents over MCP.