Murmur Technologies INC

Murmur Technologies INC (Murmur) is a Chicago, Illinois out-of-home advertising technology company operating a mobile digital billboard platform. It mounts smart LCD screens on car-tops and pedestrian backpacks to display geo-targeted ads on city streets, using sensors, computer vision, and location data to segment audiences by demographics, location, and behavior, measure ad performance in real time, and retarget viewers across other channels such as Facebook and Google. The company was surfaced as a portfolio company of 500 Global and added to the API Evangelist network as a lead for enrichment. As of the 2026-08-12 enrichment pass the operation appears dormant: both marketing domains (murmurcars.com and murmurads.com) carry Route 53 nameservers but no A record at all, and the blog host times out. The one surviving surface is portal.murmurads.com, the advertiser portal, a static React single-page app served from Amazon S3 behind CloudFront whose last build shipped 2024-12-26. Its JavaScript bundle calls a private REST backend at backendapp.murmurcars.com/api/v1/ (campaigns, venues, zipcode demographics, GPS, air quality and user endpoints), but that host — while it still resolves — has TCP 443 and 80 dead, so the portal front-end can no longer reach its own API. Murmur publishes no public API, developer portal, documentation, SDK, or machine-readable specification of any kind, and no package exists for it in any public registry.

Murmur Technologies INC is profiled on the APIs.io network. Tagged areas include Company, Advertising, AdTech, Out-of-Home Advertising, and Digital Billboards.

🌐 Visit website 📡 Source on GitHub

5.0/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0

0 APIs

CompanyAdvertisingAdTechOut-of-Home AdvertisingDigital BillboardsMobile AdvertisingMarketing

Kin Score

Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0

Composite quality — 5.0/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 5.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/murmur-technologies-inc: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: murmur-technologies-inc
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/murmur-technologies-inc.png
name: Murmur Technologies INC
description: 'Murmur Technologies INC (Murmur) is a Chicago, Illinois out-of-home advertising technology company operating
  a mobile digital billboard platform. It mounts smart LCD screens on car-tops and pedestrian backpacks to display geo-targeted
  ads on city streets, using sensors, computer vision, and location data to segment audiences by demographics, location, and
  behavior, measure ad performance in real time, and retarget viewers across other channels such as Facebook and Google. The
  company was surfaced as a portfolio company of 500 Global and added to the API Evangelist network as a lead for enrichment.
  As of the 2026-08-12 enrichment pass the operation appears dormant: both marketing domains (murmurcars.com and murmurads.com)
  carry Route 53 nameservers but no A record at all, and the blog host times out. The one surviving surface is portal.murmurads.com,
  the advertiser portal, a static React single-page app served from Amazon S3 behind CloudFront whose last build shipped 2024-12-26.
  Its JavaScript bundle calls a private REST backend at backendapp.murmurcars.com/api/v1/ (campaigns, venues, zipcode demographics,
  GPS, air quality and user endpoints), but that host — while it still resolves — has TCP 443 and 80 dead, so the portal front-end
  can no longer reach its own API. Murmur publishes no public API, developer portal, documentation, SDK, or machine-readable
  specification of any kind, and no package exists for it in any public registry.'
url: https://raw.githubusercontent.com/api-evangelist/murmur-technologies-inc/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-08-12'
tags:
- Company
- Advertising
- AdTech
- Out-of-Home Advertising
- Digital Billboards
- Mobile Advertising
- Marketing
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://murmurcars.com
- type: DomainSecurity
  url: security/murmur-technologies-inc-domain-security.yml
x-enrichment:
  date: '2026-08-12'
  status: minimal
  artifacts_added: 1
  pass: local-v1
x-coverage:
  state: none
  reason: defunct
  detail: Both Murmur marketing domains resolve to Route 53 nameservers with no A record whatsoever, and the private REST
    backend the advertiser portal calls (backendapp.murmurcars.com) still resolves but has TCP 443 and 80 dead — the only
    surface left standing is a static React portal shell on S3/CloudFront whose last build shipped 2024-12-26 and which can
    no longer reach its own API.
  evidence:
  - url: https://murmurcars.com
    status: 0
  - url: https://murmurads.com
    status: 0
  - url: https://backendapp.murmurcars.com/api/v1/zipcode/get-us-information
    status: 0
  - url: https://portal.murmurads.com/
    status: 200
  - url: https://portal.murmurads.com/.well-known/security.txt
    status: 404
  - url: https://portal.murmurads.com/llms.txt
    status: 404
  checked: '2026-08-12'

Murmur Technologies INC

Kin Score

Security Posture 1

Murmur Technologies Inc Domain Security

Resources

Access & Security 1

Company 1

Source (apis.yml)