SIGNL4
SIGNL4 scores 71/100 on xpay's Agent-Ready Index v2: partial pricing visibility; self-serve checkout is available; API access is partial; usage-based / per-token pricing is published; a free entry path exists.
SIGNL4 pricing
Starter
Free
Notify & Connect
$9/user/mo
billed annuallyOptimize
$19/user/mo
or $15/user/mo billed annuallyMaximize
$29/user/mo
or $25/user/mo billed annuallyHow SIGNL4 scores on the agent-ready dimensions
Public pricing visibility
15 / 15
Self-serve checkout
15 / 15
Public API + docs
2 / 20
Usage-based / metered pricing
20 / 20
Free entry path
7 / 7
No sales call required
7 / 7
Card / wallet / x402 payment
5 / 6
Machine-readable bonus (MCP / OpenAPI)
0 / 10
Total
71 / 100
What it actually costs at typical scale
1 user, Notify & Connect (annual billing)
$9/mo
10 users, Optimize (annual billing)
$150/mo
Can an autonomous agent transact here?
Can create account
Can enter payment method
Can upgrade plan
Can buy more usage
Can cancel online
Payment methods
Human approval recommended
Pricing transparency
full
Purchase motion
self_serve
Demo required
Quote required
Annual commit required
Auto-renewal mentioned
Cancellation policy visible
Refund policy visible
Invoice payment available
Unknown
Purchase orders supported
Unknown
MSA required
Unknown
DPA available
Unknown
Security review required
Unknown
Trial
Available, no card
API & developer surface
API-first product
Sandbox present
Webhooks
MCP mentioned
Trust & compliance
SSO / SAML
RBAC
Unknown
Audit logs
Data residency
Positioning & ecosystem
Buyer persona
Six-step check: can an agent actually buy from SIGNL4?
Discover price
Select a plan
Pay per task
Avoid a sales call
API docs without auth
Estimate cost upfront
Pros and cons for AI agents
Observational summary written by xpay from the signals captured on 2026-05-06. Not a review of the product — only of its current pricing posture for agent buyers.- Pricing is publicly visible on an indexable page — agents can read tiers without scraping past auth.
- Every advertised tier is self-serve; no tier requires scheduling a call.
- A free tier exists, lowering the bar for an agent builder to prototype before committing budget.
- No per-unit price was advertised, so an agent has no way to estimate the cost of a single task.
- API documentation is gated or absent; an agent cannot inspect the integration surface without authentication.
- PPU requires account creation and an issued API key; a fully unauthenticated agent purchase is not yet supported.
- No /.well-known/ai-pricing.json or equivalent machine-readable pricing manifest is published — agents must rely on HTML scraping.
How SIGNL4 could lift its score
Add a per-unit price (e.g. $X / 1K calls) to the pricing page so an agent can compute its own cost before committing.
| pricing_visible | true |
| headline_phrasing | Pricing — From free plans to premium features, find the right option for your business. |
| tier_count | 3 |
| lowest_paid_entry_usd | 0 |
| free_tier | true |
| free_tier_terms | null |
| per_unit_price | null |
| annual_required | true |
| self_serve_paid_tiers | 2 |
| sales_only_tiers | 0 |
| public_api_docs_url | null |
| api_docs_auth_walled | null |
| ai_pricing_json_present | false |
| agents_txt_present | false |
| anonymous_purchase_path | false |
| per_unit_classification | null |
| usage_headline_present | false |
| custom_tier_present | true |
| agent_friendly | {"ai_pricing_json":false,"agents_txt":false,"llms_txt":false,"sitemap_xml":true,"mcp_server_card":false,"agent_skills_index":false,"x402_supported":false} |
View raw extracted page text →
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See agent-ready picksSIGNL4
71
/ 100 (rubric v2.0)Incident Management
Pricing — From free plans to premium features, find the right option for your business.
3
Yes
Free
2 / 0
Auth-walled
No
Not published
2026-05-09
Tier-based subscription
SIGNL4 pricing starts at $0/mo for the Starter plan; paid plans range from $9 to $25 per user/mo (annual pricing) and up to $29 per user/mo with monthly billing. Billed annually or monthly.
Starter plan (Free)
Discovery files and protocols
Side-channel signals — informational, not part of the score. Each protocol is independent; adoption signals the publisher is thinking about agent buyers.ai-pricing.json
agents.txt
llms.txt
sitemap.xml
MCP Server Card
Agent Skills
x402 / MPP
Compare SIGNL4 with peers
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69
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69
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62
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62
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