FirmLedger

FirmLedger provides a public web application that indexes and verifies business records for companies, startups, agencies, and other entities. It aggregates open-source data into canonical profiles with provenance, confidence scores, and ownership verification. Users can browse listings without sign‑in, while a Pro API offers programmatic access to the ledger, complete with keys, documentation, and a playground for developers.

FirmLedger is listed with 2 APIs on the APIs.io network, including MCP API, and 1 more. Tagged areas include Company, Directory, Business-Intelligence, Kenya, and API.

The FirmLedger catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

FirmLedger’s developer surface includes authentication, sandbox, documentation, API reference, getting-started guide, support, engineering blog, and 17 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

46.4/100 developing Agent 34/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

2 APIs

Company DirectoryBusiness-IntelligenceKenyaAPI

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 46.4/100 · developing

Contract Quality 5.5 / 21

Developer Ergonomics 10.9 / 17

Access Clarity 13.0 / 17

Operational Transparency 1.7 / 11

Contract Governance 2.2 / 10

Discoverability 4.9 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 34/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 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

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

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

8 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 25.9 — up to +18.5 composite points
Operational Transparency scores 15.8 — up to +10.9 composite points
Contract Governance scores 22.0 — up to +9.4 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/firmledger-co-ke/apis.yml: open an issue on github.com/api-evangelist/firmledger-co-ke 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 →

APIs 2

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

FirmLedger MCP API

The FirmLedger MCP API provides programmatic access to ledger data, including company profiles, verification scores, and data export. Documentation is available at the API refer...

FirmLedger API

FirmLedger API as documented publicly: 36 operations. Contract generated from the documentation by API Evangelist (2026-10-29); not the provider's own document.

Pricing Plans 1

Published pricing tiers and plan structures.

Firmledger Co Ke Plans Pricing

3 plans

PLANS

Semantic Vocabularies 1

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

Firmledger Co Ke Context

13 classes · 40 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

FirmLedger API Rules

11 rules · 9 errors 1 warnings 1 info

SPECTRAL

JSON Schema 6

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

PostApiV1ListingsRequest

17 properties

JSON SCHEMA

PostApiV1Webhooks7RotateSecretResponse

2 properties

JSON SCHEMA

PostApiV1Webhooks7TestResponse

2 properties

JSON SCHEMA

PostMcpRequest

4 properties

JSON SCHEMA

PostMcpResponse

4 properties

JSON SCHEMA

PostOauthRegisterRequest

3 properties

JSON SCHEMA

Security Posture 2

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

Firmledger Co Ke Authentication

3 schemes

SECURITY

Firmledger Co Ke Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

Sandbox

DeveloperPortal

GettingStarted

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: firmledger-co-ke
name: FirmLedger
image: https://firmledger.co.ke/assets/og-card.png
description: FirmLedger provides a public web application that indexes and verifies business records for companies, startups,
  agencies, and other entities. It aggregates open-source data into canonical profiles with provenance, confidence scores,
  and ownership verification. Users can browse listings without sign‑in, while a Pro API offers programmatic access to the
  ledger, complete with keys, documentation, and a playground for developers.
url: https://artifacts.apis.io/firmledger-co-ke/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-29 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-28'
modified: '2026-10-28'
tags:
- Company
- Directory
- Business-Intelligence
- Kenya
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/firmledger-co-ke-plans-pricing.yml
- type: Spectral
  url: rules/firmledger-co-ke-rules.yml
- type: JSONLD
  url: json-ld/firmledger-co-ke-context.jsonld
- type: Vocabulary
  url: vocabulary/firmledger-co-ke-vocabulary.yml
- type: DataModel
  url: data-model/firmledger-co-ke-data-model.yml
- type: Authentication
  url: authentication/firmledger-co-ke-authentication.yml
- type: Conformance
  url: conformance/firmledger-co-ke-conformance.yml
- type: WellKnown
  url: well-known/firmledger-co-ke-well-known.yml
- type: Hosts
  url: hosts/firmledger-co-ke-hosts.yml
- type: Vendors
  url: vendors/firmledger-co-ke-vendors.yml
- type: StatusPage
  url: https://firmledger.co.ke/status
- type: Sandbox
  url: https://firmledger.co.ke/login?next=/dashboard/api/playground
- type: DomainSecurity
  url: security/firmledger-co-ke-domain-security.yml
- type: Website
  url: https://firmledger.co.ke
- type: DeveloperPortal
  url: https://firmledger.co.ke/docs
- type: Documentation
  url: https://firmledger.co.ke/api/docs
- type: APIReference
  url: https://firmledger.co.ke/api/docs
- type: GettingStarted
  url: https://firmledger.co.ke/api/docs
- type: Support
  url: https://firmledger.co.ke/help
- type: Blog
  url: https://firmledger.co.ke/blog
- type: Pricing
  url: https://firmledger.co.ke/pricing
- type: SignUp
  url: https://firmledger.co.ke/register
- type: TermsOfService
  url: https://firmledger.co.ke/terms
- type: PrivacyPolicy
  url: https://firmledger.co.ke/privacy
apis:
- name: FirmLedger MCP API
  description: The FirmLedger MCP API provides programmatic access to ledger data, including company profiles, verification
    scores, and data export. Documentation is available at the API reference page.
  humanURL: https://firmledger.co.ke/docs/mcp/reference
  baseURL: null
  aid: firmledger-co-ke:firmledger-mcp-api
- aid: firmledger-co-ke:firmledger-co-ke-api
  name: FirmLedger API
  description: 'FirmLedger API as documented publicly: 36 operations. Contract generated from the documentation by API Evangelist
    (2026-10-29);

    not the provider''s own document.'
  humanURL: https://firmledger.co.ke/api
  baseURL: https://mcp.firmledger.co.ke
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/firmledger-co-ke-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/firmledger-co-ke-post-api-v1-listings-request-schema.json
  - type: JSONSchema
    url: json-schema/firmledger-co-ke-post-api-v1-webhooks7-rotate-secret-response-schema.json
  - type: JSONSchema
    url: json-schema/firmledger-co-ke-post-api-v1-webhooks7-test-response-schema.json
  - type: JSONSchema
    url: json-schema/firmledger-co-ke-post-mcp-request-schema.json
  - type: JSONSchema
    url: json-schema/firmledger-co-ke-post-mcp-response-schema.json
  - type: JSONSchema
    url: json-schema/firmledger-co-ke-post-oauth-register-request-schema.json
x-submission-notes: /api/docs FirmLedger API v1
x-enrichment:
  date: '2026-10-29'
  status: nochange
  artifacts_added: 0
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

FirmLedger API — frequently asked questions

Does FirmLedger have an API?

Yes. APIs.io lists 2 APIs from FirmLedger, including FirmLedger MCP API and FirmLedger API.

Is there an OpenAPI specification for the FirmLedger API?

Yes. APIs.io indexes 2 OpenAPI specifications for FirmLedger, each linked for download from this page.

How do I authenticate with the FirmLedger API?

FirmLedger documents its authentication (3 schemes). The details are profiled on APIs.io as Firmledger Co Ke Authentication.

How much does the FirmLedger API cost?

APIs.io lists 3 pricing plans for FirmLedger, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the FirmLedger API ready for AI agents?

FirmLedger has a Kin Score of 46.4 out of 100 (developing) and an Agent Readiness score of 34.4 (agent-ready), scored by API Evangelist on 2026-10-31.

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