SymphonyOS

SymphonyOS is an AI‑powered music‑industry platform that provides a suite of autonomous agents to manage every aspect of music release and promotion. Founded in 2016, it combines data‑driven marketing, royalty accounting, fan engagement, and creative campaign tools into a single service, enabling artists and labels to focus on creation while the platform handles distribution, advertising, and business operations. With a growing roster of specialized agents, SymphonyOS aims to streamline the complex workflow of modern music production and monetization.

SymphonyOS is listed with 3 APIs on the APIs.io network, including Campaigns API, Sym API, and 1 more. Tagged areas include Company, Artificial Intelligence, Music, Platform, and Agents.

The SymphonyOS catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

SymphonyOS’s developer surface includes authentication, changelog, getting-started guide, documentation, API reference, pricing, and 19 more developer resources.

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38.6/100 thin ▼ -7.5 Agent 48/100 agent ready Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

3 APIs 1 MCP Servers

Company Artificial Intelligence Music Platform Agents

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 38.6/100 · thin

Contract Quality 6.0 / 19

Developer Ergonomics 3.9 / 15

Access Clarity 7.1 / 15

Operational Transparency 4.6 / 10

Contract Governance 2.0 / 9

Discoverability 5.4 / 8

Regulatory Posture 2.9 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 48/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 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

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Pagination +5 pts — share of collection GETs (an array, or one wrapped in data/items/results ...) that declare a page/limit/offset/cursor parameter, a Link header or a next/cursor field; na with no collection GETs

5 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 31.9 — up to +17.0 composite points
Developer Ergonomics scores 26.2 — up to +14.8 composite points
Access Clarity scores 47.4 — up to +10.5 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/symphonyos/apis.yml: open an issue on github.com/api-evangelist/symphonyos to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 4

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

SymphonyOS API

API for SymphonyOS platform, documented at https://symphonyos.co/docs

SymphonyOS Campaigns API

The Campaigns API from SymphonyOS — 2 operation(s) for campaigns.

SymphonyOS Sym API

The Sym API from SymphonyOS — 3 operation(s) for sym.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

SymphonyOS MCP Server

Remote MCP server at api.symphonyos.co.

MCP SERVER

SymphonyOS API pricing

Prices published by SymphonyOS.

Plan	Price
LabelOS Plan	$49/month per artist
Enterprise	Contact sales
Done with you	$2,000/month

Plan details, limits and sources →

Rate limits

default: 100 requests per minute

Rate-limit details →

Pricing Plans 2

Published pricing tiers and plan structures.

Symphonyos Plans Pricing

3 plans

PLANS

Symphonyos Price Estimates

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Symphonyos Rate Limits

1 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

SymphonyOS

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Symphonyos Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Symphonyos Webhooks

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Symphonyos Context

7 classes · 5 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

SymphonyOS API Rules

13 rules · 11 errors 1 warnings 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

DeleteApiSymV2Webhooks3Response

2 properties

JSON SCHEMA

GetApiSymV2V2IdResponse

2 properties

JSON SCHEMA

GetCampaignsCampaignidResponse

2 properties

JSON SCHEMA

PostApiSymV2WebhooksRequest

2 properties

JSON SCHEMA

PostApiSymV2WebhooksResponse

2 properties

JSON SCHEMA

PutApiSymV2Webhooks3Response

2 properties

JSON SCHEMA

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Symphonyos Authentication

2 schemes

SECURITY

Symphonyos Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

MCPServer

WellKnown

WellKnown

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Webhooks

DataModel

Lifecycle

Conformance

Scroll for all 7

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

SecurityTxt

SecurityTxt

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: symphonyos
name: SymphonyOS
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  probe_state: unreadable
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-06'
  method: derived
image: https://symphonyos.co/og.png
description: SymphonyOS is an AI‑powered music‑industry platform that provides a suite of autonomous agents to manage every
  aspect of music release and promotion. Founded in 2016, it combines data‑driven marketing, royalty accounting, fan engagement,
  and creative campaign tools into a single service, enabling artists and labels to focus on creation while the platform handles
  distribution, advertising, and business operations. With a growing roster of specialized agents, SymphonyOS aims to streamline
  the complex workflow of modern music production and monetization.
url: https://raw.githubusercontent.com/api-evangelist/symphonyos/refs/heads/main/apis.yml
x-type: company
x-source: harvest:music
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-12 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-12'
modified: '2026-10-12'
x-docs-platform: readme
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-17
tags:
- Company
- Artificial Intelligence
- Music
- Platform
- Agents
tags_raw:
- Company
- AI
- Music
- Platform
- Agents
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: RateLimits
  url: rate-limits/symphonyos-rate-limits.yml
- type: Plans
  url: plans/symphonyos-plans-pricing.yml
- type: Spectral
  url: rules/symphonyos-rules.yml
- type: JSONLD
  url: json-ld/symphonyos-context.jsonld
- type: Vocabulary
  url: vocabulary/symphonyos-vocabulary.yml
- type: Webhooks
  url: asyncapi/symphonyos-webhooks.yml
- type: DataModel
  url: data-model/symphonyos-data-model.yml
- type: Authentication
  url: authentication/symphonyos-authentication.yml
- type: Lifecycle
  url: lifecycle/symphonyos-lifecycle.yml
- type: Conformance
  url: conformance/symphonyos-conformance.yml
- type: LLMsTxt
  url: llms/symphonyos-llms.txt
- type: MCPServer
  url: mcp/symphonyos-mcp.yml
- type: SecurityTxt
  url: well-known/symphonyos-support-security.txt
- type: WellKnown
  url: well-known/symphonyos-well-known.yml
- type: Hosts
  url: hosts/symphonyos-hosts.yml
- type: Vendors
  url: vendors/symphonyos-vendors.yml
- type: ChangeLog
  url: https://symphonyos.co/changelog
- type: GettingStarted
  url: https://docs.symphonyos.co/docs/getting-started
- type: DomainSecurity
  url: security/symphonyos-domain-security.yml
- type: Website
  url: https://symphonyos.co/
- type: Documentation
  url: https://symphonyos.co/docs
- type: APIReference
  url: https://symphonyos.co/docs
- type: Pricing
  url: https://symphonyos.co/pricing
- type: TermsOfService
  url: https://symphonyos.co/terms-of-service
- type: PrivacyPolicy
  url: https://symphonyos.co/privacy-policy
apis:
- name: SymphonyOS API
  description: API for SymphonyOS platform, documented at https://symphonyos.co/docs
  humanURL: https://symphonyos.co/docs
  baseURL: null
  aid: symphonyos:symphonyos-api
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/symphonyos-openapi-generated.yml
    x-provenance: generated
- aid: symphonyos:symphonyos-campaigns-api
  name: SymphonyOS Campaigns API
  description: The Campaigns API from SymphonyOS — 2 operation(s) for campaigns.
  humanURL: https://symphonyos.co/docs
  baseURL: https://api.symphonyos.co
  tags:
  - Campaigns
  properties:
  - type: OpenAPI
    url: openapi/symphonyos-campaigns-api-openapi.yml
  - type: JSONSchema
    url: json-schema/symphonyos-get-api-sym-v2-v2-id-response-schema.json
  - type: JSONSchema
    url: json-schema/symphonyos-post-api-sym-v2-webhooks-response-schema.json
  - type: JSONSchema
    url: json-schema/symphonyos-put-api-sym-v2-webhooks3-response-schema.json
  - type: JSONSchema
    url: json-schema/symphonyos-get-campaigns-campaignid-response-schema.json
  - type: JSONSchema
    url: json-schema/symphonyos-delete-api-sym-v2-webhooks3-response-schema.json
  - type: JSONSchema
    url: json-schema/symphonyos-post-api-sym-v2-webhooks-request-schema.json
- aid: symphonyos:symphonyos-sym-api
  name: SymphonyOS Sym API
  description: The Sym API from SymphonyOS — 3 operation(s) for sym.
  humanURL: https://symphonyos.co/docs
  baseURL: https://api.symphonyos.co
  tags:
  - Sym
  properties:
  - type: OpenAPI
    url: openapi/symphonyos-sym-api-openapi.yml
  - type: JSONSchema
    url: json-schema/symphonyos-get-api-sym-v2-v2-id-response-schema.json
  - type: JSONSchema
    url: json-schema/symphonyos-post-api-sym-v2-webhooks-response-schema.json
  - type: JSONSchema
    url: json-schema/symphonyos-put-api-sym-v2-webhooks3-response-schema.json
  - type: JSONSchema
    url: json-schema/symphonyos-get-campaigns-campaignid-response-schema.json
  - type: JSONSchema
    url: json-schema/symphonyos-delete-api-sym-v2-webhooks3-response-schema.json
  - type: JSONSchema
    url: json-schema/symphonyos-post-api-sym-v2-webhooks-request-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Documentation pages are HTML only and no OpenAPI, AsyncAPI, GraphQL, gRPC, or WSDL contracts were found.
  evidence:
  - url: https://symphonyos.co/docs
    status: 200
  checked: '2026-10-12'
x-enrichment:
  date: '2026-10-12'
  status: enriched
  artifacts_added: 30
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

SymphonyOS API — frequently asked questions

Does SymphonyOS have an API?

Yes. APIs.io lists 3 APIs from SymphonyOS, including SymphonyOS API, SymphonyOS Campaigns API and SymphonyOS Sym API.

Is there an OpenAPI specification for the SymphonyOS API?

Yes. APIs.io indexes 3 OpenAPI specifications for SymphonyOS, each linked for download from this page.

How do I authenticate with the SymphonyOS API?

SymphonyOS documents its authentication (2 schemes). The details are profiled on APIs.io as Symphonyos Authentication.

How much does the SymphonyOS API cost?

SymphonyOS publishes its prices; its LabelOS Plan plan is $49/month per artist as of 2026-10-12. APIs.io lists 3 pricing plans for SymphonyOS, with each plan's price, limits and inclusions under Pricing on this page.

Does SymphonyOS have an MCP server?

Yes. APIs.io lists 1 MCP server for SymphonyOS: Remote MCP server at api.symphonyos.co.

Is the SymphonyOS API ready for AI agents?

SymphonyOS has a Kin Score of 38.6 out of 100 (thin) and an Agent Readiness score of 47.6 (agent-ready), scored by API Evangelist on 2026-11-06.

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