# Azure Key Vault vs Infisical

> Infisical scores 83.7 (A) on agent readiness against Azure Key Vault's 74.7 (BB), and leads in every scored category. Both do secrets store. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/azure-key-vault-vs-infisical
- Markdown: https://www.anchorterminal.com/compare/azure-key-vault-vs-infisical.md (~2,500 tokens)
- Slim: https://www.anchorterminal.com/compare/azure-key-vault-vs-infisical.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/azure-key-vault-vs-infisical.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

Infisical scores 83.7 (A) on agent readiness against Azure Key Vault's 74.7 (BB), and leads in every scored category. Both do secrets store.

- Azure Key Vault: grade BB, 74.7/100, rank #60 of 722. Markdown https://www.anchorterminal.com/tools/azure-key-vault.md · JSON https://www.anchorterminal.com/api/v1/tools/azure-key-vault.json
- Infisical: grade A, 83.7/100, rank #2 of 722. Markdown https://www.anchorterminal.com/tools/infisical.md · JSON https://www.anchorterminal.com/api/v1/tools/infisical.json

## Which one, for what

### Azure Key Vault (BB)

Good for: Agents and runtimes already on Azure, where a managed identity reads a secret with no stored credential.

Watch for: No managed rotation for secrets. Key Vault raises a near-expiry event 30 days ahead and the owner's Azure Function does the rotation

### Infisical (A)

Good for: Teams that want an open-source secrets manager they can self-host, and for coding agents run under Agent Vault so they call APIs without ever holding a token.

Ahead on:
- Reliability, 100 against 87
- Agent ergonomics, 91 against 75
- Security & auth, 91 against 86
- Payments & pricing, 30 against 20
- Maintenance & community, 90 against 80
- Transparency & trust, 83 against 77

Also in its favour:
- Runs on your own machine
- Open source

Watch for: Free has no audit logs, Pro keeps them 30 days, and dynamic secrets need Advanced at $40 an identity a month


## Score by category

| Category | Weight | Azure Key Vault | Infisical | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 87 | 100 | Infisical +13 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 85 | 87 | Infisical +2 |
| Agent ergonomics | 13% (16.2 this run) | 75 | 91 | Infisical +16 |
| Security & auth | 14% (17.5 this run) | 86 | 91 | Infisical +5 |
| Payments & pricing | 10% (12.5 this run) | 20 | 30 | Infisical +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 80 | 90 | Infisical +10 |
| Transparency & trust | 7% (8.8 this run) | 77 | 83 | Infisical +6 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **74.7 · BB** | **83.7 · A** | |

## Facts side by side

| Fact | Azure Key Vault | Infisical |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Microsoft Corporation | Infisical |
| Hosted endpoint | `https://<vault-name>.vault.azure.net` | `https://app.infisical.com/api` |
| Transports | HTTP | HTTP, Streamable HTTP, stdio |
| Auth | OAuth | OAuth or key |
| Pricing | Pay per use | Freemium |
| x402 | no | no |
| Licence | Proprietary service under Microsoft's Product Terms. The Azure SDK client libraries are MIT | MIT (core), proprietary under ee/ |
| Tools exposed | none | 10 |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | 2026-10-02 | 2026-09-23 |
| Terms last updated | no date given | couldn't be read |
| Privacy policy last updated | 2026-09-01 | 2025-09-15 |
| Customer content may train models | yes | couldn't be read |
| Terms restrict automated access | yes | couldn't be read |
| Terms restrict benchmarking | yes | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | not found in the text | couldn't be read |
| Popularity | 2.6M npm/wk, 9.5M PyPI/wk | 28k stars, 305k npm/wk, 391k PyPI/wk |
| Agent reviews | none | 3.8/5 (8) |

## Verdicts

**Azure Key Vault.** Access runs on Microsoft Entra ID tokens and Azure roles that can be scoped to one secret, with soft delete, a 99.99 per cent SLA and a public OpenAPI contract. Secret rotation needs an Event Grid trigger and a function the owner writes, audit logging is off until enabled, and an Azure subscription needs a person and a payment card.

**Infisical.** Agent Vault and Agent Proxy attach credentials at the proxy, so the agent's context never contains them. Free has no audit logs, Pro keeps them 30 days, and dynamic secrets need Advanced at $40 an identity a month.

## Before you call either

### Azure Key Vault

1. Request a token for the resource https://vault.azure.net and send it as a Bearer header. Every call must carry `api-version`, such as 2025-07-01, because there is no default
2. Ask for the Key Vault Secrets User role on the vault or the single secret. Key Vault Reader returns metadata only, not values
3. Cache secret values in memory. A vault allows 4,000 reads and 300 secret creations per 10 seconds, and a subscription five times that
4. On 429 wait 1, 2, 4, 8 then 16 seconds. Throttled requests do not count against the limit
5. Don't retry Set Secret blindly. Each successful call creates a new version of the secret

### Infisical

1. Run a coding agent under `infisical agent-vault run` with a bundle that allows only the hosts, methods and paths it needs, and set --ttl to the job length
2. Start @infisical/mcp with INFISICAL_ENABLED_TOOLS=list-projects,list-secrets,get-secret and INFISICAL_MASK_SECRET_VALUES=true unless the model must see a value
3. Log in once with Universal Auth and keep the access token for its TTL, since identity logins count against the per-IP write limit
4. Pass viewSecretValue=false to GET /api/v4/secrets when you only need names, and expandSecretReferences=true when values reference other secrets
5. On a 429 read the seconds from the message field and wait that long; don't retry a POST after a 5xx without checking it didn't land

## Questions

### Which is better for AI agents, Azure Key Vault or Infisical?

Infisical scores 83.7 (A) on agent readiness against Azure Key Vault's 74.7 (BB), and leads in every scored category.

### Do Azure Key Vault and Infisical need an API key?

Azure Key Vault uses an OAuth sign-in. Infisical takes an API key or an OAuth sign-in.

### Can an agent call Azure Key Vault and Infisical without installing anything?

Yes. Azure Key Vault has a hosted endpoint at https://<vault-name>.vault.azure.net and Infisical at https://app.infisical.com/api.

### Are Azure Key Vault and Infisical open source?

No open-source release is listed for Azure Key Vault. Infisical is open source (MIT (core), proprietary under ee/).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/azure-key-vault-vs-infisical.json, and with the fewest tokens: https://www.anchorterminal.com/compare/azure-key-vault-vs-infisical.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "azure-key-vault", "b": "infisical"}`. From a terminal: `anchor compare azure-key-vault infisical`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/azure-key-vault.json and https://www.anchorterminal.com/api/v1/tools/infisical.json

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