callagent.pro

callagent.pro provides human-like AI phone agents that answer and place real phone calls. Its REST Agent API (Bearer keys prefixed cak_live_, base https://www.callagent.pro) covers building agents, assigning numbers and SIP trunks, test chats and test calls, call transcripts, recordings and summaries, contacts, do-not-call lists, and billing, including x402 USDC top-ups on Base. Submitted through apis.io/add.

callagent.pro is listed with 1 API on the APIs.io network: Agent API. Tagged areas include AI Agents, Voice, Telephony, Phone Agents, and SIP.

callagent.pro’s developer surface includes engineering blog and 3 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

13.2/100 emerging ▬ flat Agent 13/100 agent aware Front door AI 6/6 dominant Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 API

AI Agents Voice TelephonyPhone AgentsSIP x402 Call Automation

Kin Score

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

Composite quality — 13.2/100 · emerging

Contract Quality 5.1 / 21

Developer Ergonomics 1.0 / 17

Access Clarity 1.8 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.7 / 9

Regulatory Posture 0.6 / 15

Agent readiness — 13/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 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 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
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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

12 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 24.0 — up to +19.0 composite points
Developer Ergonomics scores 6.0 — up to +18.8 composite points
Access Clarity scores 10.5 — up to +17.9 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/callagentpro/apis.yml: open an issue on github.com/api-evangelist/callagentpro 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
x402 Micropayments & Agentic Pay-per-Call	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

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.

x402

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

OpenAPI

measured — observed by APIs.io (published)

APIs 1

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

callagent.pro Agent API

REST API for everything the callagent.pro dashboard does: agents, test-chat and test-call, numbers, SIP accounts and trunks, calls and live calls, knowledge, contacts, do-not-ca...

Resources

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

name: callagent.pro
aid: callagentpro
description: callagent.pro provides human-like AI phone agents that answer and place real phone calls. Its REST Agent API
  (Bearer keys prefixed cak_live_, base https://www.callagent.pro) covers building agents, assigning numbers and SIP trunks,
  test chats and test calls, call transcripts, recordings and summaries, contacts, do-not-call lists, and billing, including
  x402 USDC top-ups on Base. Submitted through apis.io/add.
url: https://raw.githubusercontent.com/api-evangelist/callagentpro/refs/heads/main/apis.yml
x-type: company
x-source: apis-io-submission
x-submitted-by: info@callagent.pro, apis.io/add 2026-09-22 (docs https://callagent.pro/docs)
x-tier: stub
x-tier-reason: apis.io/add submission worked by the support sweep 2026-09-23; host probed healthy (root 200, invented path
  404, llms.txt 200)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.23'
created: '2026-09-23'
modified: '2026-09-23'
tags:
- AI Agents
- Voice
- Telephony
- Phone Agents
- SIP
- x402
- Call Automation
apis:
- aid: callagentpro:agent-api
  name: callagent.pro Agent API
  description: 'REST API for everything the callagent.pro dashboard does: agents, test-chat and test-call, numbers, SIP accounts
    and trunks, calls and live calls, knowledge, contacts, do-not-call, and billing including x402 top-ups. Documented in
    the provider llms.txt, which names an OpenAPI 3.1 spec as authoritative.'
  humanURL: https://www.callagent.pro/docs/agent-api.md
  tags:
  - AI Agents
  - Voice
  - Telephony
  properties:
  - type: OpenAPI
    name: OpenAPI (provider-hosted)
    url: https://www.callagent.pro/openapi/agent-api.yaml
  - type: Documentation
    url: https://www.callagent.pro/docs/agent-api.md
common:
- type: Website
  url: https://www.callagent.pro/
- type: Blog
  url: https://www.callagent.pro/blog
- type: TermsOfService
  url: https://www.callagent.pro/terms
- type: PrivacyPolicy
  url: https://www.callagent.pro/policy
x-enrichment-note: '2026-09-23 local-v5 pass BLOCKED: after ~25 probes the host 85.215.231.137 began refusing TCP 443 from
  our IP (connection refused for 40+ minutes). llms.txt was fetched (200) and saved verbatim; the OpenAPI 3.1 spec it names
  at /openapi/agent-api.yaml was never fetched. Re-run slowly (one request every few seconds); pointers above come from the
  llms.txt and sitemap.xml and are unverified.'

callagent.pro API — frequently asked questions

Does callagent.pro have an API?

Yes. APIs.io lists 1 API from callagent.pro, including callagent.pro Agent API.

Is there an OpenAPI specification for the callagent.pro API?

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

Is the callagent.pro API ready for AI agents?

callagent.pro has a Kin Score of 13.2 out of 100 (emerging) and an Agent Readiness score of 12.9 (agent-aware), scored by API Evangelist on 2026-11-06.

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