PromptGround
PromptGround provides AI prompt management, version tracking, and testing platform. It offers a unified API key to access multiple AI models, detailed run logs, team collaboration, and SDKs for Python and JavaScript. Users get 10,000 free tokens to start, with pay‑as‑you‑go pricing and bulk discounts. The service includes a live prompt editor, variable support, and analytics for prompt performance, targeting developers, prompt engineers, and teams seeking scalable prompt workflows.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles PromptGround the way a machine reads it — 17 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — PromptGround scores 28.0/100 (thin), with a separate agent-readiness read of 27/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Why this profile is thin
Unable to verify ownership of the OpenAPI spec at https://api.promptground.io/openapi.json; the spec lacks company identifiers.
The documentation is public — a person can read it, but a machine cannot. This one is PromptGround's to change: publishing an OpenAPI (or AsyncAPI for events) at a stable URL would make the same surface consumable by a crawler, a linter, and an AI agent.
What we probed
https://api.promptground.io/openapi.json→ HTTP 200
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-10-31 · rubric v0.25.0
Put this on your own site. The badge is drawn live from PromptGround's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/promptground/"
title="PromptGround on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/promptground.svg"
alt="PromptGround Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/promptground/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/promptground/"
title="PromptGround on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/promptground/card.svg"
alt="PromptGround Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile PromptGround
Each block below is one kind of artifact we hold for PromptGround. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 9
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
PromptGround API v1 API
The API v1 API from PromptGround — 1 operation(s) for api v1.
PromptGround API v2 API
The API v2 API from PromptGround — 2 operation(s) for api v2.
PromptGround Invites API
The Invites API from PromptGround — 2 operation(s) for invites.
PromptGround Models API
The Models API from PromptGround — 2 operation(s) for models.
PromptGround Payments API
The Payments API from PromptGround — 4 operation(s) for payments.
PromptGround Projects API
The Projects API from PromptGround — 4 operation(s) for projects.
PromptGround Prompts API
The Prompts API from PromptGround — 8 operation(s) for prompts.
PromptGround Sessions API
The Sessions API from PromptGround — 2 operation(s) for sessions.
PromptGround Settings API
The Settings API from PromptGround — 4 operation(s) for settings.
Scroll within the panel for all 9 ·
Agent Skills 3
An agent skill packages the how-to for driving these APIs from an assistant — the prompts, the sequence, the guardrails — so the knowledge to use the API travels with it.
Packaged agent skills for driving this provider's APIs from an AI assistant.
promptground-create-and-run-prompt
AGENT SKILLpromptground-manage-project
AGENT SKILLpromptground-payments-process-payment
AGENT SKILLSemantic Vocabularies 1
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Promptground Context
JSON-LDSpectral Rules 1
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
PromptGround API Rules
SPECTRALSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for PromptGround — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 1
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Company 2
The organization behind the API
Other 2
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/promptground · machine-readable index on apis.io
This is an independent, third-party profile of PromptGround, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.