AgentBill

agentbill-dev is a company surfaced via the API Evangelist harvest backlog (source: mcp-registry) and added to the network as a stub for full-pipeline profiling.

AgentBill is listed with 2 APIs on the APIs.io network. Tagged areas include Company.

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

AgentBill’s developer surface includes authentication, pricing, documentation, engineering blog, getting-started guide, and 22 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

34.0/100 thin ▼ -9.2 Agent 37/100 agent ready Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

2 APIs

Company

Kin Score

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

Composite quality — 34.0/100 · thin

Contract Quality 5.2 / 21

Developer Ergonomics 5.3 / 17

Access Clarity 9.2 / 17

Operational Transparency 1.5 / 11

Contract Governance 3.6 / 10

Discoverability 3.4 / 9

Regulatory Posture 3.1 / 15

Agent readiness — 37/100 · 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 9 / 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

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 0 / 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 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
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
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link

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 24.7 — up to +18.8 composite points
Developer Ergonomics scores 31.0 — up to +13.8 composite points
Operational Transparency scores 13.2 — up to +11.3 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/agentbill-dev/apis.yml: open an issue on github.com/api-evangelist/agentbill-dev 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 2

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.

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

APIs 2

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

AgentBill API

AgentBill provides a pricing and usage API for model calls, documented at the developer portal.

AgentBill API

AgentBill API as documented publicly: 16 operations. Contract generated from the documentation by API Evangelist (2026-11-01); not the provider's own document.

AgentBill API pricing

Prices published by AgentBill, read 2026-11-01 from agentbill.dev/pricing.

Plan	Price
free	$0 forever
builder	$29/ mo
team	$99/ mo
scale	$299/ mo

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Agentbill Dev Plans Pricing

4 plans

PLANS

Semantic Vocabularies 1

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

Agentbill Dev Context

12 classes · 43 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

AgentBill API Rules

10 rules · 8 errors 1 warnings 1 info

SPECTRAL

JSON Schema 6

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

GetTasksTaskrefResponse

7 properties

JSON SCHEMA

PostEventsRequest

9 properties

JSON SCHEMA

PostPreflightRequest

5 properties

JSON SCHEMA

PostPreflightResponse

7 properties

JSON SCHEMA

PutBudgetRequest

2 properties

JSON SCHEMA

PutBudgetResponse

7 properties

JSON SCHEMA

Security Posture 2

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

Agentbill Dev Authentication

1 scheme

SECURITY

Agentbill Dev Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Idempotency

Conventions

Conformance

Scroll for all 7

Build 2

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

Access & Security 4

Authentication, authorization, and security posture

Authentication

SecurityTxt

Security

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

StatusPage

StatusPage

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Leadership

Leadership

Source (apis.yml)

aid: agentbill-dev
name: AgentBill
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  probe_state: unreadable
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://agentbill.dev/og.png?v=0c66b0f9fa14
description: 'agentbill-dev is a company surfaced via the API Evangelist harvest backlog (source: mcp-registry) and added
  to the network as a stub for full-pipeline profiling.'
url: https://artifacts.apis.io/agentbill-dev/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-01 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-31'
modified: '2026-10-31'
tags:
- Company
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/agentbill-dev-plans-pricing.yml
- type: Spectral
  url: rules/agentbill-dev-rules.yml
- type: JSONLD
  url: json-ld/agentbill-dev-context.jsonld
- type: Vocabulary
  url: vocabulary/agentbill-dev-vocabulary.yml
- type: DataModel
  url: data-model/agentbill-dev-data-model.yml
- type: Idempotency
  url: conventions/agentbill-dev-conventions.yml
- type: Conventions
  url: conventions/agentbill-dev-conventions.yml
- type: Authentication
  url: authentication/agentbill-dev-authentication.yml
- type: Conformance
  url: conformance/agentbill-dev-conformance.yml
- type: LLMsTxt
  url: llms/agentbill-dev-llms.txt
- type: SecurityTxt
  url: well-known/agentbill-dev-clawhub-security.txt
- type: WellKnown
  url: well-known/agentbill-dev-well-known.yml
- type: Hosts
  url: hosts/agentbill-dev-hosts.yml
- type: SDKs
  url: packages/agentbill-dev-packages.yml
- type: Packages
  url: packages/agentbill-dev-packages.yml
- type: TermsOfService
  url: https://agentbill.dev/terms
- type: StatusPage
  url: https://agentbill.dev/status
- type: Security
  url: https://agentbill.dev/security
- type: PrivacyPolicy
  url: https://agentbill.dev/privacy
- type: Pricing
  url: https://agentbill.dev/pricing
- type: Login
  url: https://agentbill.dev/login
- type: Leadership
  url: https://agentbill.dev/app/upgrade/team
- type: Documentation
  url: https://agentbill.dev/docs
- type: Blog
  url: https://agentbill.dev/blog
- type: GettingStarted
  url: https://agentbill.dev/docs/first-run
- type: DomainSecurity
  url: security/agentbill-dev-domain-security.yml
- type: Website
  url: https://agentbill.dev/
apis:
- name: AgentBill API
  description: AgentBill provides a pricing and usage API for model calls, documented at the developer portal.
  humanURL: https://agentbill.dev/docs
  baseURL: null
  properties: []
  aid: agentbill-dev:agentbill-api
- aid: agentbill-dev:agentbill-dev-api
  name: AgentBill API
  description: 'AgentBill API as documented publicly: 16 operations. Contract generated from the documentation by API Evangelist
    (2026-11-01);

    not the provider''s own document.'
  humanURL: https://agentbill.dev/integrations/openai-agents-sdk
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/agentbill-dev-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/agentbill-dev-post-events-request-schema.json
  - type: JSONSchema
    url: json-schema/agentbill-dev-post-preflight-request-schema.json
  - type: JSONSchema
    url: json-schema/agentbill-dev-post-preflight-response-schema.json
  - type: JSONSchema
    url: json-schema/agentbill-dev-get-tasks-taskref-response-schema.json
  - type: JSONSchema
    url: json-schema/agentbill-dev-put-budget-response-schema.json
  - type: JSONSchema
    url: json-schema/agentbill-dev-put-budget-request-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Documentation is HTML only; no OpenAPI, AsyncAPI, GraphQL, gRPC or WSDL files were found.
  evidence:
  - url: https://agentbill.dev/docs
    status: 200
  checked: '2026-11-01'
x-enrichment:
  date: '2026-11-01'
  status: enriched
  artifacts_added: 29
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

AgentBill API — frequently asked questions

Does AgentBill have an API?

Yes. APIs.io lists 2 APIs from AgentBill, including AgentBill API and AgentBill API.

Is there an OpenAPI specification for the AgentBill API?

Yes. APIs.io indexes 1 OpenAPI specification for AgentBill, each linked for download from this page.

How do I authenticate with the AgentBill API?

AgentBill documents its authentication (1 scheme). The details are profiled on APIs.io as Agentbill Dev Authentication.

How much does the AgentBill API cost?

AgentBill publishes its prices; its free plan is $0 forever as of 2026-11-01. APIs.io lists 4 pricing plans for AgentBill, with each plan's price, limits and inclusions under Pricing on this page.

Is the AgentBill API ready for AI agents?

AgentBill has a Kin Score of 34.0 out of 100 (thin) and an Agent Readiness score of 37.3 (agent-ready), scored by API Evangelist on 2026-11-06.

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