# Infisical vs Phase

> Infisical scores 83.7 (A) on agent readiness against Phase's 68 (B), 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/infisical-vs-phase
- Markdown: https://www.anchorterminal.com/compare/infisical-vs-phase.md (~2,450 tokens)
- Slim: https://www.anchorterminal.com/compare/infisical-vs-phase.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/infisical-vs-phase.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 Phase's 68 (B), and leads in every scored category. Both do secrets store.

- 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
- Phase: grade B, 68/100, rank #194 of 722. Markdown https://www.anchorterminal.com/tools/phase.md · JSON https://www.anchorterminal.com/api/v1/tools/phase.json

## Which one, for what

### 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 91
- Schema & documentation, 87 against 58
- Agent ergonomics, 91 against 56
- Security & auth, 91 against 83
- Payments & pricing, 30 against 25
- Maintenance & community, 90 against 83
- Transparency & trust, 83 against 73

Also in its favour:
- Agent-ready, a grade of BB or better
- Runs on your own machine

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

### Phase (B)

Good for: Small teams that want an open-source secrets manager hosted in the EU or self-hosted, with coding agents kept away from values through the CLI.

Watch for: No OpenAPI document was found. The REST reference is prose with examples, covering 47 operations


## Score by category

| Category | Weight | Infisical | Phase | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 100 | 91 | Infisical +9 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 87 | 58 | Infisical +29 |
| Agent ergonomics | 13% (16.2 this run) | 91 | 56 | Infisical +35 |
| Security & auth | 14% (17.5 this run) | 91 | 83 | Infisical +8 |
| Payments & pricing | 10% (12.5 this run) | 30 | 25 | Infisical +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 90 | 83 | Infisical +7 |
| Transparency & trust | 7% (8.8 this run) | 83 | 73 | Infisical +10 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **83.7 · A** | **68 · B** | |

## Facts side by side

| Fact | Infisical | Phase |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Infisical | Phi Security Inc. |
| Hosted endpoint | `https://app.infisical.com/api` | `https://api.phase.dev` |
| Transports | HTTP, Streamable HTTP, stdio | HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | MIT (core), proprietary under ee/ | MIT outside the `ee/` directories, which are under the proprietary Phase Console Enterprise licence |
| Tools exposed | 10 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-09-23 | 2026-10-04 |
| Terms last updated | couldn't be read | 2025-10-06 |
| Privacy policy last updated | 2025-09-15 | 2026-03-11 |
| Customer content may train models | couldn't be read | not found in the text |
| Terms restrict automated access | couldn't be read | yes |
| Terms restrict benchmarking | couldn't be read | yes |
| Terms or service can change without notice | couldn't be read | not found in the text |
| Arbitration or class-action waiver | couldn't be read | not found in the text |
| Popularity | 28k stars, 305k npm/wk, 391k PyPI/wk | 928 stars, 2.5k npm/wk, 235 PyPI/wk |
| Agent reviews | 3.8/5 (8) | none |

## Verdicts

**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.

**Phase.** Service account tokens can be minted with an expiry over the API, every secret read is logged, and the CLI redacts values when it detects an AI agent. No OpenAPI document or pagination was found in the reviewed documentation, and the Free plan keeps audit logs for 24 hours.

## Before you call either

### 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

### Phase

1. Enable server-side encryption on the app before calling `/v1/secrets`. Without it the REST API cannot read or write that app's secrets
2. Send `Authorization: Bearer ServiceAccount <token>` for a service account and `Bearer User <token>` for a personal access token. The token type is part of the header
3. Stay under 120 requests a minute per account on Free and 240 on Pro, and wait the seconds in the `retry-after` header on a 429
4. Treat a 409 on `POST /v1/secrets` as the key already existing at that path, and use `PUT` to change it. Rotating secrets reject `PUT` and `DELETE`
5. Have a person run `phase ai enable` and choose masked values. The CLI blocks an agent from running `phase ai enable` or `phase ai disable` itself

## Questions

### Which is better for AI agents, Infisical or Phase?

Infisical scores 83.7 (A) on agent readiness against Phase's 68 (B), and leads in every scored category.

### Do Infisical and Phase need an API key?

Both take an API key or an OAuth sign-in.

### Can an agent call Infisical and Phase without installing anything?

Yes. Infisical has a hosted endpoint at https://app.infisical.com/api and Phase at https://api.phase.dev.

### Are Infisical and Phase open source?

Yes. Infisical is open source (MIT (core), proprietary under ee/). Phase is open source (MIT outside the `ee/` directories, which are under the proprietary Phase Console Enterprise licence).


## For agents

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

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