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Rank #6 of 6 in Edge & App Platforms

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Fly.io

YC W20

Fly.io, Inc. · commercial

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installercurl -L https://fly.io/install.sh | sh

Vendor-official, but review any script before piping it to a shell.

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Fly.io homepage screenshot
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Fly.io docs screenshot
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Verified integrations

Connections to other tracked products — hover a chip for the verbatim evidence quote behind it.

By theme — the product's score on each story themeBy theme

Agenticness — how well agents can access and operate the productAgenticnessevidence →

How well agents can access and operate the product

27.5/100

Automation depth — how much of the product can run unattendedAutomation depthevidence →

How much of the product can run unattended

7.5/100

Deploy workflow — the commit-to-production path — builds, previews, rollbacksDeploy workflowevidence →

The commit-to-production path — builds, previews, rollbacks

21.2/100

Dev experience — day-to-day developer experience — setup friction, docs, debugging, iteration speedDev experienceevidence →

Day-to-day developer experience — setup friction, docs, debugging, iteration speed

42.2/100

Edge compute — running code at the edge — regions, cold starts, runtime limitsEdge computeevidence →

Running code at the edge — regions, cold starts, runtime limits

35.7/100

Networking security — network controls and isolation — private access, firewalls, encryptionNetworking securityevidence →

Network controls and isolation — private access, firewalls, encryption

2.7/100

Observability — seeing what the system is doing — logs, metrics, traces, alertsObservabilityevidence →

Seeing what the system is doing — logs, metrics, traces, alerts

0.0/100

Openness — open source, data portability, and self-hosting storiesOpennessevidence →

Open source, data portability, and self-hosting stories

7.2/100

Pricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limitsevidence →

Free-tier ceilings, usage caps, and rate limits before you have to pay

18.7/100

Privacy posture — data-handling and privacy storiesPrivacy postureevidence →

Data-handling and privacy stories

12.0/100

Storage data — storing and moving data — persistence, formats, durabilityStorage dataevidence →

Storing and moving data — persistence, formats, durability

5.8/100

Story verdicts — every judged story with its evidenceStory verdicts

What’s free: 0 free · 1 paid · 0 enterprise · 27 not stated in evidence

?

Sorted by importance (agentic first) (high → low) · 96/96 stories · click a row’s chevron for the rationale and evidence

Drive the product through a documented public API G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3partial6/10T

Connect an agent via an official MCP server G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3partial5/10C

Plug MCP servers into this product so it can use their tools G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3n/a0/10

Delegate tasks to a built-in AI assistant inside the product G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness3n/auntestednone yet

The documented rate limits and concurrency caps for APIs and functions so I can plan for scale G

Api quality

developerAgenticness — how well agents can access and operate the productAgenticness3noneuntestednone yet

Point an agent at llms.txt or agent-oriented docs G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2full8/10T

Use an official CLI G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2full8/10T

Issue scoped/least-privilege API credentials for an agent G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2full7/10C

Run the product headlessly / in CI for automation G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial6/10T

Set up automations that run autonomously in the background G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial5/10X

Operate the product with natural-language commands G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial4/10C

Build against official SDKs G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Download a machine-readable API spec (OpenAPI or equivalent) G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Explore an interactive API reference with runnable examples G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Rely on versioned APIs with a documented deprecation policy G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Subscribe to events via webhooks G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Get AI-generated insights and suggestions from my data inside the product G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2n/auntestednone yet

Test against a sandbox environment without touching production data G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness1partial7/10C

Run my code on a global edge network close to end users C

Serverless runtime

developerEdge compute — running code at the edge — regions, cold starts, runtime limitsEdge compute3full8/10X

Deploy serverless functions and full-stack apps with no servers to manage C

Serverless runtime

developerEdge compute — running code at the edge — regions, cold starts, runtime limitsEdge compute3disputed5/10D

Deploy my app by simply connecting my repo without manual build configuration C

Git integration

developerDeploy workflow — the commit-to-production path — builds, previews, rollbacksDeploy workflow3partial4/10X

Roll back a deployed service to any previous version in one click C

Rollback recovery

developerDeploy workflow — the commit-to-production path — builds, previews, rollbacksDeploy workflow3partial4/10T

Run unmodified Node.js code and npm packages in edge/serverless functions instead of a restricted runtime subset C

Runtime compatibility

developerEdge compute — running code at the edge — regions, cold starts, runtime limitsEdge compute3partial4/10C

Provision a fully-managed Postgres database with point-in-time recovery, replicas, and high availability C

Relational db

developerStorage data — storing and moving data — persistence, formats, durabilityStorage data3disputed3/10D

Automatically deploy my app on every Git push C

Git integration

developerDeploy workflow — the commit-to-production path — builds, previews, rollbacksDeploy workflow3none0/10

Define rules that trigger actions automatically on events G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth3none0/10

Run AI model inference globally with a single call without managing GPUs or capacity planning C

Ai inference

ai-native builderEdge compute — running code at the edge — regions, cold starts, runtime limitsEdge compute3none0/10

Self-host the core product G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness3none0/10

The CPU and wall-clock execution time limits for functions so I can tell whether long-running or agentic workloads will fit C

Execution limits

devops-leadPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits3none0/10

The exact overage fee schedule for exceeding plan usage limits (bandwidth, invocations, build minutes) before I get billed G

Overage fees

devops-leadPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits3none0/10

View all my build, deploy, and runtime logs in one place C

Unified logging

developerObservability — seeing what the system is doing — logs, metrics, traces, alertsObservability3none0/10

Access hundreds of AI models through a single unified gateway endpoint C

Ai inference

ai-native builderEdge compute — running code at the edge — regions, cold starts, runtime limitsEdge compute3n/auntestednone yet

Export all of my data in open formats and leave G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness3noneuntestednone yet

Get an automatic preview URL for every pull request C

Preview envs

developerDeploy workflow — the commit-to-production path — builds, previews, rollbacksDeploy workflow3noneuntestednone yet

Get free, automatically renewing TLS certificates for every domain including wildcards C

Tls certs

devops-leadNetworking security — network controls and isolation — private access, firewalls, encryptionNetworking security3noneuntestednone yet

Have DDoS protection and a web application firewall applied to every request by default C

Ddos waf

devops-leadNetworking security — network controls and isolation — private access, firewalls, encryptionNetworking security3noneuntestednone yet

Prevent my data from being used to train AI models G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture3n/auntestednone yet

Review a published uptime SLA with defined credits for downtime G

Reliability sla

devops-leadObservability — seeing what the system is doing — logs, metrics, traces, alertsObservability3noneuntestednone yet

Deploy my project directly from the command line without using a web dashboard C

Cli tooling

developerDeploy workflow — the commit-to-production path — builds, previews, rollbacksDeploy workflow2full9/10T

Attached disk/storage auto-grows with usage and I'm billed only for bytes actually written rather than pre-provisioned capacity P

Usage billing

devops-leadPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits2full7/10C

Deploy my application to specific regions closer to my users C

Placement latency

devops-leadEdge compute — running code at the edge — regions, cold starts, runtime limitsEdge compute2full7/10C

Give my coding agent a persistent runtime environment that checkpoints its state automatically while working C

Agent runtime

ai-native builderEdge compute — running code at the edge — regions, cold starts, runtime limitsEdge compute2full7/10C

Pay only for active compute time rather than idle wall-clock time G

Usage billing

devops-leadPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits2fullpaid7/10C

Run untrusted code in hardware-isolated, disposable sandboxes C

Sandboxing

developerEdge compute — running code at the edge — regions, cold starts, runtime limitsEdge compute2full7/10C

Scaffold and deploy a new project with a single CLI command C

Cli tooling

developerDeploy workflow — the commit-to-production path — builds, previews, rollbacksDeploy workflow2full7/10X

Write code against standard runtime APIs so it runs unmodified across multiple edge platforms instead of being locked into proprietary storage/runtime APIs C

Tool continuity

developerDev experience — day-to-day developer experience — setup friction, docs, debugging, iteration speedDev experience2full7/10C

Choose where my data is stored (region/residency) G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2partial6/10C

Define, deploy, and version my entire architecture with a single configuration file C

Infra as code

devops-leadDeploy workflow — the commit-to-production path — builds, previews, rollbacksDeploy workflow2partial6/10C

Do everything through the API that I can do in the UI G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness2partial6/10T

Keep using my existing Git, CI, editor, and framework workflows without adopting proprietary tooling C

Tool continuity

developerDev experience — day-to-day developer experience — setup friction, docs, debugging, iteration speedDev experience2partial6/10C

Rely on the same core APIs and primitives from prototype through massive scale, without rearchitecting or migrating platforms as usage grows C

Scaling continuity

developerDev experience — day-to-day developer experience — setup friction, docs, debugging, iteration speedDev experience2partial6/10C

Write edge functions in languages other than JavaScript such as Python, Go, or Rust C

Runtime compatibility

developerEdge compute — running code at the edge — regions, cold starts, runtime limitsEdge compute2full6/10C

Deploy applications packaged as Docker containers C

Deployment strategies

developerDeploy workflow — the commit-to-production path — builds, previews, rollbacksDeploy workflow2disputed5/10D

Deploy instances that boot in under a second and scale to tens of thousands under load C

Scaling

devops-leadEdge compute — running code at the edge — regions, cold starts, runtime limitsEdge compute2disputed5/10D

Manage team-level access, secrets, and environment variables centrally C

Secrets management

devops-leadDev experience — day-to-day developer experience — setup friction, docs, debugging, iteration speedDev experience2partial5/10C

Connect my code to external services like databases, APIs, and storage through native bindings with minimal boilerplate instead of hand-wiring SDKs and credentials C

Integrations

developerStorage data — storing and moving data — persistence, formats, durabilityStorage data2partial4/10C

Deploy a project by uploading a folder of files directly, with no Git repo required and the new deployment kept private until I choose to publish it P

Manual deploy

developerDeploy workflow — the commit-to-production path — builds, previews, rollbacksDeploy workflow2partial4/10C

Handle persistent WebSocket connections from within edge/serverless functions for real-time apps C

Realtime connections

developerEdge compute — running code at the edge — regions, cold starts, runtime limitsEdge compute2partial4/10C

Keep internal service-to-service traffic off the public internet without VPC complexity C

Private networking

devops-leadNetworking security — network controls and isolation — private access, firewalls, encryptionNetworking security2partial4/10C

Rely on automatic compute placement near backend data to optimize latency C

Placement latency

devops-leadEdge compute — running code at the edge — regions, cold starts, runtime limitsEdge compute2partial4/10C

Rely on load-based autoscaling to absorb large traffic bursts automatically C

Scaling

devops-leadEdge compute — running code at the edge — regions, cold starts, runtime limitsEdge compute2partial4/10X

Perform bulk operations across many items at once G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth2partial3/10C

Check a public status page with historical incident postmortems before committing G

Reliability sla

devops-leadObservability — seeing what the system is doing — logs, metrics, traces, alertsObservability2none0/10

Control data retention and deletion G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2none0/10

Deploy durable, long-running workflows as code without manually wiring queues and retries C

Workflows

developerEdge compute — running code at the edge — regions, cold starts, runtime limitsEdge compute2none0/10

Persist user-generated uploads using built-in object storage C

Object storage

developerStorage data — storing and moving data — persistence, formats, durabilityStorage data2none0/10

Put simple password protection on a deployed site without standing up a custom auth system C

Access control

developerNetworking security — network controls and isolation — private access, firewalls, encryptionNetworking security2none0/10

Query a serverless SQL database directly from my code with no connection management C

Relational db

developerStorage data — storing and moving data — persistence, formats, durabilityStorage data2none0/10

Roll out new deployments incrementally to reduce blast radius C

Deployment strategies

devops-leadDeploy workflow — the commit-to-production path — builds, previews, rollbacksDeploy workflow2none0/10

Schedule recurring jobs or workflows G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth2none0/10

Serve static assets faster using a global CDN with edge caching C

Cdn assets

developerStorage data — storing and moving data — persistence, formats, durabilityStorage data2none0/10

The guaranteed support response times and escalation paths for my plan tier G

Reliability sla

devops-leadObservability — seeing what the system is doing — logs, metrics, traces, alertsObservability2none0/10

Whether pricing is per-seat with minimum seat counts that increase cost as my team grows G

Overage fees

devops-leadPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits2none0/10

Attach custom domains to my deployed services C

Domains

developerNetworking security — network controls and isolation — private access, firewalls, encryptionNetworking security2noneuntestednone yet

Build custom dashboards combining metrics from any service C

Metrics dashboards

devops-leadObservability — seeing what the system is doing — logs, metrics, traces, alertsObservability2noneuntestednone yet

Develop and test my app locally using a simulator that matches the production runtime C

Cli tooling

developerDeploy workflow — the commit-to-production path — builds, previews, rollbacksDeploy workflow2noneuntestednone yet

Get ephemeral full-stack preview environments for every pull request C

Preview envs

developerDeploy workflow — the commit-to-production path — builds, previews, rollbacksDeploy workflow2noneuntestednone yet

Opt out of telemetry and usage tracking G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2noneuntestednone yet

Programmatically provision and route custom domains for my own multi-tenant SaaS customers C

Domains

developerNetworking security — network controls and isolation — private access, firewalls, encryptionNetworking security2noneuntestednone yet

Read the product's source under an open license G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness2noneuntestednone yet

Secure internal apps, deployments, and agents using my organization's identity provider G

Identity

devops-leadNetworking security — network controls and isolation — private access, firewalls, encryptionNetworking security2noneuntestednone yet

Set hard spending limits to control my cloud costs G

Cost controls

devops-leadPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits2noneuntestednone yet

Set up alerts that notify me via chat or email when specific conditions are met C

Alerting

devops-leadObservability — seeing what the system is doing — logs, metrics, traces, alertsObservability2noneuntestednone yet

Use a Redis-compatible key-value store for low-latency caching and job queues C

Kv cache

developerStorage data — storing and moving data — persistence, formats, durabilityStorage data2noneuntestednone yet

Visualize and edit my entire infrastructure stack on a visual canvas without writing config files C

Visual infra

devops-leadDev experience — day-to-day developer experience — setup friction, docs, debugging, iteration speedDev experience2n/auntestednone yet

Spin up unlimited isolated environments so my whole team can ship simultaneously C

Environments

developerDev experience — day-to-day developer experience — setup friction, docs, debugging, iteration speedDev experience1partial6/10X

Version, review, and roll back my automations G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth1partial4/10C

Deploy one-click templates and starters for common use cases C

Templates

developerDeploy workflow — the commit-to-production path — builds, previews, rollbacksDeploy workflow1none0/10

Isolate non-production environments from accessing production services C

Env isolation

devops-leadNetworking security — network controls and isolation — private access, firewalls, encryptionNetworking security1noneuntestednone yet

Let teammates and collaborators comment directly on preview and production environments C

Collaboration

developerDev experience — day-to-day developer experience — setup friction, docs, debugging, iteration speedDev experience1n/auntestednone yet

Protect my app from automated bot traffic with invisible challenge-based protection C

Bot protection

developerNetworking security — network controls and isolation — private access, firewalls, encryptionNetworking security1n/auntestednone yet

Receive migration credits when moving my production infrastructure to a new platform C

Cost controls

devops-leadPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits1noneuntestednone yet

Resize and optimize images on demand via a built-in image CDN C

Media

developerStorage data — storing and moving data — persistence, formats, durabilityStorage data1n/auntestednone yet

Serve HTTP, TCP, gRPC, and WebSocket traffic from the same deployed service without separate protocol configuration C

Protocols

developerNetworking security — network controls and isolation — private access, firewalls, encryptionNetworking security1noneuntestednone yet

Track site performance and visitor behavior with built-in analytics C

Metrics dashboards

devops-leadObservability — seeing what the system is doing — logs, metrics, traces, alertsObservability1n/auntestednone yet

Use an in-browser toolbar to leave feedback, manage feature flags, and inspect performance directly on my live site C

Collaboration

developerDev experience — day-to-day developer experience — setup friction, docs, debugging, iteration speedDev experience1n/auntestednone yet

Opportunities — the stories that would move this product's scores, from its own judged verdictsOpportunitiestop 8 of 68 stories with headroom

What would move Fly.io’s scores — derived from its own judged verdicts, biggest headroom first. Each line quotes what the judge found missing; shipping it (or evidencing it publicly) is the fix.

  1. Agenticness — how well agents can access and operate the productThe documented rate limits and concurrency caps for APIs and functions so I can plan for scale

    nonemoves API qualityimpact 45

    No evidence pack items document specific rate limits, concurrency caps, or throughput quotas for Fly.io's APIs, Machines, or MCP/Sprite offerings; docs focus on scaling primitives and pricing model, not documented numeric limits/caps for planning capacity.

  2. Edge compute — running code at the edge — regions, cold starts, runtime limitsRun AI model inference globally with a single call without managing GPUs or capacity planning

    nonemoves PA Scoreimpact 30

    The evidence pack documents Fly Machines/Sprites as general-purpose global compute VMs, agent sandboxes, and Postgres, but contains no mention of a managed AI inference/model-serving API, GPU provisioning, or 'single call' inference capability abstracting away GPU/capacity management.

  3. Networking security — network controls and isolation — private access, firewalls, encryptionGet free, automatically renewing TLS certificates for every domain including wildcards

    nonemoves PA Scoreimpact 30

    No evidence in the pack mentions TLS certificate provisioning, automatic renewal, or wildcard domain support; the docs excerpts focus on Machines, Sprites, MCP servers, and pricing, not certificate management.

  4. Automation depth — how much of the product can run unattendedDefine rules that trigger actions automatically on events

    nonemoves PA Scoreimpact 30

    Fly.io's evidence only shows infrastructure-level triggers like Machine restart policies (restart on process exit) — not a general-purpose rules/automation engine for reacting to arbitrary events.

  5. Networking security — network controls and isolation — private access, firewalls, encryptionHave DDoS protection and a web application firewall applied to every request by default

    nonemoves PA Scoreimpact 30

    No evidence pack item mentions DDoS protection or a web application firewall being applied by default (or at all); docs cover secrets, scaling, and Machine isolation but never security perimeter features like WAF/DDoS mitigation.

  6. Pricing limits — free-tier ceilings, usage caps, and rate limits before you have to payThe CPU and wall-clock execution time limits for functions so I can tell whether long-running or agentic workloads will fit

    nonemoves PA Scoreimpact 30

    Missing: any documented CPU quota, timeout, or wall-clock limit per Machine/Sprite invocation, and any comparison table or pricing-limits doc addressing execution duration.

  7. Deploy workflow — the commit-to-production path — builds, previews, rollbacksAutomatically deploy my app on every Git push

    nonemoves PA Scoreimpact 30

    Missing: any mention of Git-triggered CI/CD, GitHub App integration, or auto-deploy hooks.

  8. Pricing limits — free-tier ceilings, usage caps, and rate limits before you have to payThe exact overage fee schedule for exceeding plan usage limits (bandwidth, invocations, build minutes) before I get billed

    nonemoves PA Scoreimpact 30

    Evidence shows only generic pay-as-you-go pricing claims (compute/storage/bandwidth billed by usage) but no documented overage fee schedule, no specifics on invocation or build-minute overage costs, and no billing rate table.

Showing the top 8 of 68 — every none/partial verdict in the story verdicts table is headroom.

Think a verdict is wrong? Every verdicts-table row has a Flag link — see the methodology.

Coverage map — which docs area, API section, or community source covers which judged storiesCoverage map6 surfaces · 41 covered stories

Where the cited evidence behind each covered verdict came from — the same citations the verdicts table shows, no extra judging.

fly.io36 stories

docs29 stories

Claims vs evidence — vendor claims reconciled against independent verdictsClaims vs evidence

3 of 12 testable claims verified · 2 contradictedintegrity 0/100

13 distinct capability claims found in Fly.io’s own claimed-docs/GitHub materials, reconciled against our judge’s independent verdicts.

3

Verified

7

Unverified

2

Contradicted

27

Undersold

Verified (3)
Unverified (10)
Contradicted (2)
Undersold (27)
Claims outside our story set (1)

Real capability claims found in Fly.io’s own materials, but no story in this arena’s taxonomy covers them yet — that’s feedback on the taxonomy, not a mark against the product.

  • Every Sprite gets its own HTTPS URL so apps built by an agent go live in place with no migration step

    source ↗
Suggest a story for these →

Business model

usage-based

Usage-based pay-as-you-go billing for compute, storage and egress, prorated by the second; only minor free allowances, no broad free tier.

pricing ↗

Score trend

How this product’s scores have moved as evidence and verdicts are re-derived — a point per change, not per day.

PA Score12 (Sep 1 '26)20 (Sep 16 '26)
Agent-ready29 (Aug 29 '26)41 (Sep 16 '26)

Flag

⚑ Flag a verdict

Think a verdict is wrong? Opens a prefilled GitHub issue — or use the ⚑ next to any verdict above.

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Hotlinked SVG — always shows the live current score.

For agents

Data

Agent surface uptime llms.txt 100% (30d, checked every 6h since Sep 8 '26)