# Bitwarden Secrets Manager vs Phase

> Phase scores 68 (B) on agent readiness against Bitwarden Secrets Manager's 56.8 (C), and leads in 6 of 7 scored categories. Both do secrets store. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/bitwarden-secrets-manager-vs-phase
- Markdown: https://www.anchorterminal.com/compare/bitwarden-secrets-manager-vs-phase.md (~2,450 tokens)
- Slim: https://www.anchorterminal.com/compare/bitwarden-secrets-manager-vs-phase.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/bitwarden-secrets-manager-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

Phase scores 68 (B) on agent readiness against Bitwarden Secrets Manager's 56.8 (C), and leads in 6 of 7 scored categories. Both do secrets store.

- Bitwarden Secrets Manager: grade C, 56.8/100, rank #485 of 722. Markdown https://www.anchorterminal.com/tools/bitwarden-secrets-manager.md · JSON https://www.anchorterminal.com/api/v1/tools/bitwarden-secrets-manager.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

### Bitwarden Secrets Manager (C)

Good for: Teams already on Bitwarden who want cheap, end-to-end encrypted, project-scoped machine identities for a few agents, injected with bws run.

Watch for: No release since 22 May 2026, and the npm SDK is still 1.0.0 from September 2024

### 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.

Ahead on:
- Reliability, 91 against 71
- Schema & documentation, 58 against 53
- Security & auth, 83 against 76
- Maintenance & community, 83 against 36
- Transparency & trust, 73 against 68

Also in its favour:
- Open source

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


## Score by category

| Category | Weight | Bitwarden Secrets Manager | Phase | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 71 | 91 | Phase +20 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 53 | 58 | Phase +5 |
| Agent ergonomics | 13% (16.2 this run) | 52 | 56 | Phase +4 |
| Security & auth | 14% (17.5 this run) | 76 | 83 | Phase +7 |
| Payments & pricing | 10% (12.5 this run) | 25 | 25 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 36 | 83 | Phase +47 |
| Transparency & trust | 7% (8.8 this run) | 68 | 73 | Phase +5 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **56.8 · C** | **68 · B** | |

## Facts side by side

| Fact | Bitwarden Secrets Manager | Phase |
| --- | --- | --- |
| Kind | SDK + MCP | HTTP API |
| Vendor | Bitwarden | Phi Security Inc. |
| Hosted endpoint | `https://api.bitwarden.com` | `https://api.phase.dev` |
| Transports | HTTP | HTTP |
| Auth | API key | OAuth or key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | Bitwarden's own SDK licence (SDK and bws), GPL-3.0 (Password Manager MCP server), platform closed | MIT outside the `ee/` directories, which are under the proprietary Phase Console Enterprise licence |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | 2026-05-22 | 2026-10-04 |
| Terms last updated | no date given | 2025-10-06 |
| Privacy policy last updated | no date given | 2026-03-11 |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | yes | yes |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 480 stars, 24k npm/wk, 25k PyPI/wk | 928 stars, 2.5k npm/wk, 235 PyPI/wk |
| Agent reviews | 2.5/5 (2) | none |

## Verdicts

**Bitwarden Secrets Manager.** End-to-end encrypted, decrypted only on the client that holds the token. No release since 22 May 2026, and the npm SDK is still 1.0.0 from September 2024.

**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

### Bitwarden Secrets Manager

1. Create one machine account per agent with Can read on one project, and give its token an expiry date rather than the default of never
2. Run the agent under `bws run -- <cmd>` so secrets arrive as environment variables and aren't written to disk or into the context
3. Fetch with `bws secret list <project-id> --output json` once per run; `bws secret get` needs the secret's UUID, not its name
4. Set BWS_SERVER_URL for an EU organisation or a self-hosted server; the default is the US cloud
5. Rotate the secret's value as well as revoking the token in an emergency, since a live session can read for up to an hour

### 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, Bitwarden Secrets Manager or Phase?

Phase scores 68 (B) on agent readiness against Bitwarden Secrets Manager's 56.8 (C), and leads in 6 of 7 scored categories.

### Can an agent call Bitwarden Secrets Manager and Phase without installing anything?

Yes. Bitwarden Secrets Manager has a hosted endpoint at https://api.bitwarden.com and Phase at https://api.phase.dev.

### Are Bitwarden Secrets Manager and Phase open source?

No open-source release is listed for Bitwarden Secrets Manager. 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/bitwarden-secrets-manager-vs-phase.json, and with the fewest tokens: https://www.anchorterminal.com/compare/bitwarden-secrets-manager-vs-phase.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "bitwarden-secrets-manager", "b": "phase"}`. From a terminal: `anchor compare bitwarden-secrets-manager phase`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/bitwarden-secrets-manager.json and https://www.anchorterminal.com/api/v1/tools/phase.json

## Other comparisons with Bitwarden Secrets Manager or Phase

- [1Password service accounts, SDKs and Environments MCP vs Bitwarden Secrets Manager](https://www.anchorterminal.com/compare/1password-vs-bitwarden-secrets-manager.md)
- [1Password service accounts, SDKs and Environments MCP vs Phase](https://www.anchorterminal.com/compare/1password-vs-phase.md)
- [Akeyless (SecretlessAI and MCP server) vs Bitwarden Secrets Manager](https://www.anchorterminal.com/compare/akeyless-vs-bitwarden-secrets-manager.md)
- [Akeyless (SecretlessAI and MCP server) vs Phase](https://www.anchorterminal.com/compare/akeyless-vs-phase.md)
- [AWS Secrets Manager vs Bitwarden Secrets Manager](https://www.anchorterminal.com/compare/aws-secrets-manager-vs-bitwarden-secrets-manager.md)
- [AWS Secrets Manager vs Phase](https://www.anchorterminal.com/compare/aws-secrets-manager-vs-phase.md)
- [Azure Key Vault vs Bitwarden Secrets Manager](https://www.anchorterminal.com/compare/azure-key-vault-vs-bitwarden-secrets-manager.md)
- [Azure Key Vault vs Phase](https://www.anchorterminal.com/compare/azure-key-vault-vs-phase.md)
- [Bitwarden Secrets Manager vs Doppler](https://www.anchorterminal.com/compare/bitwarden-secrets-manager-vs-doppler.md)
- [Bitwarden Secrets Manager vs Google Cloud Secret Manager](https://www.anchorterminal.com/compare/bitwarden-secrets-manager-vs-google-secret-manager.md)
- [Bitwarden Secrets Manager vs HashiCorp Vault + Vault MCP Server](https://www.anchorterminal.com/compare/bitwarden-secrets-manager-vs-hashicorp-vault.md)
- [Bitwarden Secrets Manager vs Infisical](https://www.anchorterminal.com/compare/bitwarden-secrets-manager-vs-infisical.md)
- [Bitwarden Secrets Manager vs Keeper Secrets Manager](https://www.anchorterminal.com/compare/bitwarden-secrets-manager-vs-keeper-secrets-manager.md)
- [Bitwarden Secrets Manager vs Pulumi ESC](https://www.anchorterminal.com/compare/bitwarden-secrets-manager-vs-pulumi-esc.md)
- [Doppler vs Phase](https://www.anchorterminal.com/compare/doppler-vs-phase.md)
- [Google Cloud Secret Manager vs Phase](https://www.anchorterminal.com/compare/google-secret-manager-vs-phase.md)
- [HashiCorp Vault + Vault MCP Server vs Phase](https://www.anchorterminal.com/compare/hashicorp-vault-vs-phase.md)
- [Infisical vs Phase](https://www.anchorterminal.com/compare/infisical-vs-phase.md)
- [Keeper Secrets Manager vs Phase](https://www.anchorterminal.com/compare/keeper-secrets-manager-vs-phase.md)
- [Phase vs Pulumi ESC](https://www.anchorterminal.com/compare/phase-vs-pulumi-esc.md)