Promptless

https://gopromptless.ai
42
Fair
Agent Native Score

Promptless is a platform for building and deploying AI agents that can autonomously interact with web applications and APIs without requiring manual prompt engineering.

Categories: Ai Automation · Agent Platform
#2 of 6 in Ai Automation · #6 of 11 in Agent Platform
Checklist Breakdown

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Discovery 35%

Can an agent find and understand this tool without a web search?

— Published OpenAPI/Swagger spec
— Has llms.txt or llms-full.txt
— Has an MCP server (official or well-maintained)
— MCP server listed in a public registry
— API reference docs are publicly accessible
— Docs include runnable code examples
— Has a public changelog or release notes
— Has a public status page
Auth & Onboarding Not yet scored

Can an agent create an account and get credentials without human intervention?

— Signup does not require CAPTCHA
— Signup does not require phone verification
— Supports API key auth (not only OAuth)
— API key obtainable without manual approval
— No mandatory billing info to start
— Can sign up without creating an organization
Pricing Not yet scored

Can an agent operate autonomously without upfront payment or contracts?

— Has a free tier
— Usage-based pricing available
— No minimum contract or commitment
— Pricing page is public (no 'contact sales')
— Free tier sufficient for testing (not just a trial)
Agent Tooling Requires account Not yet scored

How well does the API work for non-human consumers?

— SDK available in 2+ languages
— Structured error responses (JSON with error codes)
— Idempotency support on write endpoints
— Pagination on list endpoints
— Webhook/event support
— Sandbox or test mode available
— Rate limit headers in responses
— Consistent REST resource naming
Reliability Requires account 40%

Does the tool fail gracefully when an agent makes a mistake?

— Meaningful error messages (not just 500)
— 429 responses include Retry-After header
— Documented uptime SLA (99.9%+)
— Graceful degradation under rate limits
— Request IDs in responses for debugging
— API versioning supported
Reviewer Notes

Promptless is itself an agent platform rather than a tool for agents to use, which limits its relevance to this registry. Discovery is hampered by the lack of OpenAPI specs, MCP servers, or structured developer documentation. Account creation requires OAuth2 only, preventing full programmatic signup. The agent tooling is moderate—it likely has APIs for deploying agents, but without public spec documentation, integration complexity remains high. Reliability and pricing lack transparent SLAs and detailed tier breakdowns. Best suited as a deployment target rather than a service an external agent would autonomously discover and integrate with.

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