Plumma

Plumma SRL is an Italian software house (VAT IT04209450362, REA MO-451932) with its registered office at Via Corsini 21, Fellicarolo, Fanano (Modena) and an operational office at Via Provinciale 175/B, Crespellano, Valsamoggia (Bologna). Its own product, Plumma Connect, is an aggregation gateway in front of mobile network operators: it sells enterprises a single integration point for the operator-held identity, SIM and network-state signals that the GSMA Open Gateway programme exposes, instead of requiring the buyer to onboard operator-by-operator and country-by-country. Plumma states it is a GSMA Open Gateway channel partner and names GSMA, TIM, AWS and WaveMaker among its partners. Its architectural position is the notable part, and it is deliberate. Rather than mirroring the CAMARA one-endpoint-per-capability shape, Plumma Connect publishes a SINGLE OpenAPI 3.1 operation — POST /api on https://connect.plumma.it/services — that takes a phone number in E.164 form plus a list of named commands (sim_swap, kyc_match, age_verification, current_carrier, porting_logs, roaming_intel, churn_tracker, digital_footprint and others), so the CAMARA surface is an implementation detail behind an abstraction layer rather than the developer contract. The company is not, however, standard-averse underneath: its KYC request schema carries the CAMARA KnowYourCustomer Match attribute vocabulary verbatim (in snake_case), and every 4xx/5xx returns an RFC 7807 problem document with a correlation_id. The divergence is at the endpoint shape, not the data model. The product is positioned for fraud prevention and identity verification, with company-stated coverage of 17 live countries across Europe, the Americas, APAC and Africa and 75+ network connections. Documentation, the OpenAPI and a draft-07 request schema are public and ungated, and the JavaScript documentation portal is backed by an unauthenticated JSON content API at connect.ploomma.com that serves 72 documents including the billing guide, SLA, terms and full command reference. Billing is EUR 200/month plus a prepaid wallet charged per served command; published rate limits are 2/5 RPS and 180 commands/day. There is no MCP server, no agent card, no SDKs and no /.well-known documents — the provider marks SDKs and webhooks 'under construction'.

Plumma publishes 1 API on the APIs.io network: CONNECT API. Tagged areas include Telecommunications, Network APIs, Italy, Europe, and GSMA Open Gateway.

Plumma’s developer surface includes sandbox, signup flow, authentication, documentation, API reference, support, engineering blog, and 28 more developer resources.

🌐 Visit website 📡 Source on GitHub
53.4/100 developing ▬ flat Agent 34/100 agent ready Front door AI 1/6 silent Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0
2 APIs
TelecommunicationsNetwork APIsItalyEuropeGSMA Open GatewayCAMARAAPI AggregatorFraud PreventionIdentity VerificationSIM SwapKYCAge VerificationNumber VerificationTelco IntelligenceSoftware Development

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0
Composite quality — 53.4/100 · developing
Contract Quality 11.6 / 19
Developer Ergonomics 8.1 / 15
Access Clarity 7.5 / 15
Operational Transparency 4.6 / 10
Contract Governance 2.0 / 9
Discoverability 5.0 / 8
Regulatory Posture 5.4 / 15
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 34/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Regulatory Posture applies to this provider. Its tags matched the Telecommunications 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/.
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 github.com/api-evangelist/plumma: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

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

Plumma CONNECT API

The flagship aggregation endpoint.

Pricing Plans 1

Published pricing tiers and plan structures.

Plumma Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Plumma Rate Limits

3 limits

RATE LIMITS

JSON Schema 1

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

PlmRequest

4 properties

JSON SCHEMA

Examples 1

Example request and response payloads for these APIs.

Plumma Connect Api Examples

6 fields

EXAMPLE

Security Posture 4

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

Plumma Authentication

apiKey · 1 scheme

SECURITY

Plumma Domain Security

TLSv1.3 · DMARC

SECURITY

Plumma Vulnerability Disclosure

Hackerone · security.txt

SECURITY

Plumma Trust Center

trust center published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Plumma Agentic Access

1 operation · 1 acting

1 operations · 1 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

Sandbox
Sandbox
 SignUp
SignUp
 DeveloperPortal
DeveloperPortal

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgentSkill
AgentSkill
 X-MCPServerCandidate
X-MCPServerCandidate
 LLMsTxt
LLMsTxt
 AgenticAccess
AgenticAccess

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Vocabulary
Vocabulary
 DataModel
DataModel
 ErrorCatalog
ErrorCatalog
 ErrorCodes
ErrorCodes
 Lifecycle
Lifecycle
 Conformance
Conformance

Scroll for all 7

Build 1

SDKs, sample code, and the tooling you integrate with

Packages
Packages

Access & Security 3

Authentication, authorization, and security posture

Compliance
Compliance
 Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 4

Status, limits, changes, and where to get help

RateLimits
RateLimits
 StatusPage
StatusPage
 Support
Support
 Contact
Contact

Commercial 3

Pricing, plans, and the legal terms of use

Plans
Plans
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 3

The organization behind the API

Website
Website
 Website
Website
 Blog
Blog

Other 5

Properties that don't map to a standard resource type

Overlay
Overlay
 Standards
Standards
 Standards
Standards
 Standards
Standards
 Standards
Standards

Source (apis.yml)

apis.yml Raw ↑ 
aid: plumma
url: https://raw.githubusercontent.com/api-evangelist/plumma/refs/heads/main/apis.yml
name: Plumma
kind: company
description: 'Plumma SRL is an Italian software house (VAT IT04209450362, REA MO-451932) with its registered office at Via
  Corsini 21, Fellicarolo, Fanano (Modena) and an operational office at Via Provinciale 175/B, Crespellano, Valsamoggia (Bologna).
  Its own product, Plumma Connect, is an aggregation gateway in front of mobile network operators: it sells enterprises a
  single integration point for the operator-held identity, SIM and network-state signals that the GSMA Open Gateway programme
  exposes, instead of requiring the buyer to onboard operator-by-operator and country-by-country. Plumma states it is a GSMA
  Open Gateway channel partner and names GSMA, TIM, AWS and WaveMaker among its partners.


  Its architectural position is the notable part, and it is deliberate. Rather than mirroring the CAMARA one-endpoint-per-capability
  shape, Plumma Connect publishes a SINGLE OpenAPI 3.1 operation — POST /api on https://connect.plumma.it/services — that
  takes a phone number in E.164 form plus a list of named commands (sim_swap, kyc_match, age_verification, current_carrier,
  porting_logs, roaming_intel, churn_tracker, digital_footprint and others), so the CAMARA surface is an implementation detail
  behind an abstraction layer rather than the developer contract. The company is not, however, standard-averse underneath:
  its KYC request schema carries the CAMARA KnowYourCustomer Match attribute vocabulary verbatim (in snake_case), and every
  4xx/5xx returns an RFC 7807 problem document with a correlation_id. The divergence is at the endpoint shape, not the data
  model.


  The product is positioned for fraud prevention and identity verification, with company-stated coverage of 17 live countries
  across Europe, the Americas, APAC and Africa and 75+ network connections. Documentation, the OpenAPI and a draft-07 request
  schema are public and ungated, and the JavaScript documentation portal is backed by an unauthenticated JSON content API
  at connect.ploomma.com that serves 72 documents including the billing guide, SLA, terms and full command reference. Billing
  is EUR 200/month plus a prepaid wallet charged per served command; published rate limits are 2/5 RPS and 180 commands/day.
  There is no MCP server, no agent card, no SDKs and no /.well-known documents — the provider marks SDKs and webhooks ''under
  construction''.'
image: https://connect.plumma.it/wp-content/uploads/2026/03/PLUMMA-logo-bianco-inline-90x304-1.png
tags:
- Telecommunications
- Network APIs
- Italy
- Europe
- GSMA Open Gateway
- CAMARA
- API Aggregator
- Fraud Prevention
- Identity Verification
- SIM Swap
- KYC
- Age Verification
- Number Verification
- Telco Intelligence
- Software Development
created: '2026-09-07'
modified: '2026-09-07'
specificationVersion: '0.23'
position: Producing
x-type: company
x-source: harvest:direct-outreach
x-tier: stub
x-tier-reason: harvest
apis:
- aid: plumma:plumma-connect-api
  name: Plumma CONNECT API
  description: The flagship aggregation endpoint.
  humanURL: https://connect.plumma.it/plumma-connect-docs/
  baseURL: https://connect.plumma.it/services
  tags:
  - Connect
  tags_raw:
  - CONNECT
  properties:
  - type: OpenAPI
    url: openapi/plumma-connect-api-openapi.yml
  - type: JSONSchema
    url: json-schema/plumma-plmrequest.schema.json
  - type: Examples
    url: examples/plumma-connect-api-examples.json
  - type: Documentation
    url: https://connect.plumma.it/plumma-connect-docs/
  - type: APIReference
    url: https://connect.plumma.it/plumma-connect-docs/
common:
- type: Overlay
  url: overlays/plumma-connect-api-overlay.yaml
- type: Conventions
  url: conventions/plumma-conventions.yml
- type: Vocabulary
  url: vocabulary/plumma-commands-vocabulary.yml
- type: DataModel
  url: data-model/plumma-data-model.yml
- type: ErrorCatalog
  url: errors/plumma-problem-types.yml
- type: ErrorCodes
  url: errors/plumma-status-codes.yml
- type: Lifecycle
  url: lifecycle/plumma-lifecycle.yml
- type: Conformance
  url: conformance/plumma-conformance.yml
- type: Compliance
  url: https://connect.plumma.it/plumma-connect-docs/#security
- type: Sandbox
  url: sandbox/plumma-sandbox.yml
- type: Plans
  url: plans/plumma-plans-pricing.yml
- type: RateLimits
  url: rate-limits/plumma-rate-limits.yml
- type: Packages
  url: packages/plumma-packages.yml
- type: AgentSkill
  url: skills/_index.yml
- type: X-MCPServerCandidate
  url: mcp/plumma-mcp.yml
- type: LLMsTxt
  url: llms/plumma-llms.txt
- type: SignUp
  url: https://connect.ploomma.com/
- type: TermsOfService
  url: https://connect.plumma.it/plumma-connect-docs/#terms-and-conditions
- type: AgenticAccess
  url: agentic-access/plumma-agentic-access.yml
- type: Authentication
  url: authentication/plumma-authentication.yml
- type: DomainSecurity
  url: security/plumma-domain-security.yml
- type: Website
  url: https://www.plumma.it
- type: Website
  url: https://connect.plumma.it
- type: DeveloperPortal
  url: https://connect.plumma.it
- type: Documentation
  url: https://connect.plumma.it/plumma-connect-docs/
- type: APIReference
  url: https://connect.plumma.it/plumma-connect-docs/
- type: StatusPage
  url: https://oneuptime.com/status-page/5c4b010b-1753-4d8f-8689-226d6e86d72a
- type: Support
  url: https://connect.plumma.it/support/
- type: PrivacyPolicy
  url: https://www.plumma.it/privacy-policy.html
- type: Blog
  url: https://connect.plumma.it/blog/
- type: Contact
  url: https://www.plumma.it/company.html
- type: Standards
  url: https://www.gsma.com/solutions-and-impact/gsma-open-gateway/
  name: GSMA Open Gateway
  x-standard: gsma-open-gateway
  x-relationship: channel-partner (company-stated)
- type: Standards
  url: https://camaraproject.org/
  name: CAMARA
  x-standard: camara
  x-relationship: vocabulary-conformant, endpoint-divergent — KYC Match attribute names carried verbatim; single POST /api
    rather than one endpoint per capability
- type: Standards
  url: https://www.rfc-editor.org/rfc/rfc9457
  name: Problem Details for HTTP APIs
  x-standard: problem-details
  x-relationship: implemented — RFC 7807 problem documents on every 4xx/5xx
- type: Standards
  url: https://spec.openapis.org/oas/v3.1.0
  name: OpenAPI
  x-standard: openapi
  x-relationship: implemented — publishes OpenAPI 3.1.0 ungated
x-enrichment:
  date: '2026-09-07'
  status: enriched
  artifacts_added: 28
  pass: local-v3
x-coverage:
  state: covered
  reason: n/a
  detail: Fully readable. The OpenAPI 3.1 contract and a standalone draft-07 request schema are served unauthenticated from
    connect.plumma.it, and the JS-rendered docs portal turned out to be backed by an ungated JSON content API at connect.ploomma.com/services/compliance
    — 72 documents including the billing guide, the SLA, the terms, the status/error registry and the full command reference,
    all HTTP 200.
  checked: '2026-09-07'
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io

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