# HelpDesk vs Missive API + MCP

> Missive scores 54.3 (C) to HelpDesk's 50.3 (D) for support notes. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/helpdesk-vs-missive
- Markdown: https://www.anchorterminal.com/compare/helpdesk-vs-missive.md (~2,700 tokens)
- Slim: https://www.anchorterminal.com/compare/helpdesk-vs-missive.min.md (~580 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/helpdesk-vs-missive.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: 2026-10-09

Missive API + MCP scores 54.3 (C) on agent readiness against HelpDesk's 50.3 (D), and leads in 3 of 7 scored categories. HelpDesk leads on schema & documentation and payments & pricing. Both do support notes.

- HelpDesk: grade D, 50.3/100, rank #774 of 950. Markdown https://www.anchorterminal.com/tools/helpdesk.md · JSON https://www.anchorterminal.com/api/v1/tools/helpdesk.json
- Missive API + MCP: grade C, 54.3/100, rank #689 of 950. Markdown https://www.anchorterminal.com/tools/missive.md · JSON https://www.anchorterminal.com/api/v1/tools/missive.json
- Best customer support and helpdesk APIs for AI agents: https://www.anchorterminal.com/best/support/index.md
- All 153 support comparisons: https://www.anchorterminal.com/compare/support/index.md

## Which one, for what

### HelpDesk (D)

Good for: A team already on HelpDesk or Text that wants an agent to read queues, draft replies, add private notes and change status over REST.

Ahead on:
- Schema & documentation, 63 against 52
- Payments & pricing, 35 against 30

Watch for: No rate limit, 429 behaviour or idempotency key found in the API description or Text's docs

### Missive API + MCP (C)

Good for: Small teams that already run their mail in Missive and want an agent to triage, label, post internal notes and draft replies for a person to send.

Ahead on:
- Security & auth, 61 against 50
- Maintenance & community, 60 against 39
- Transparency & trust, 77 against 67

Also in its favour:
- Free to start without a card

Watch for: REST tokens are personal with no scopes and reach every account the user can open, shared accounts included


## Score by category

| Category | Weight | HelpDesk | Missive API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 60 | 60 | even |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 63 | 52 | HelpDesk +11 |
| Agent ergonomics | 13% (16.2 this run) | 47 | 46 | HelpDesk +1 |
| Security & auth | 14% (17.5 this run) | 50 | 61 | Missive API + MCP +11 |
| Payments & pricing | 10% (12.5 this run) | 35 | 30 | HelpDesk +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 39 | 60 | Missive API + MCP +21 |
| Transparency & trust | 7% (8.8 this run) | 67 | 77 | Missive API + MCP +10 |
| Negative events | ≤15 | -2 | 0 | |
| **Total** | | **50.3 · D** | **54.3 · C** | |

## Facts side by side

| Fact | HelpDesk | Missive API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Text, Inc. | Missive |
| Hosted endpoint | `https://api.helpdesk.com` | `https://public.missiveapp.com/v1` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | Proprietary service under Text's Terms of Use | Proprietary service under Missive's Terms and Conditions |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | none | 2026-10-08 |
| Terms last updated | no date given | 2024-04-15 |
| Privacy policy last updated | no date given | 2026-03-27 |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | yes | not found in the text |
| Terms or service can change without notice | yes | yes |
| Arbitration or class-action waiver | not found in the text | not found in the text |

## Verdicts

**HelpDesk.** The API covers the ticket workflow in 139 operations with a public OpenAPI 3.0.3 description, cursor pagination and about 39 list filters. No rate limit, error format or 429 handling was found in the reviewed documentation, and tokens carry no ticket-level scopes, so a token can do whatever its user's role allows.

**Missive API + MCP.** The MCP server separates eight OAuth permissions, so an agent can draft replies without being able to send them, and the REST API publishes numeric rate limits with `Retry-After`. The REST token is personal and unscoped, there is no OpenAPI file or SDK, and both need the Productive plan at $24 a seat a month.

## Before you call either

### HelpDesk

1. Send Basic auth with the account ID as username and the personal access token as password, and always set a `User-Agent` header
2. Create the token from a Viewer or Agent account when the task allows. A token inherits its creator's role, and only Administrators can change settings
3. Reply or add a note through `PATCH /v1/tickets/{ticketID}` with `message.text`. Set `isPrivate` to true for an internal note, because the default sends to the requester
4. Page `/v1/tickets` with `next.value` and `next.ID` from the last item, keep `sortBy` and `order` fixed, and pass `silo` to read archive, spam or trash
5. Budget for metered calls. Text's docs count every request except those answered 500 against the plan's monthly API allowance

### Missive API + MCP

1. Send the personal token as `Authorization: Bearer`. Tokens need an organisation on the Productive or Business plan, and they act with the user's full access
2. Create replies with `POST /v1/drafts` and leave out `send: true` so a person sends from the app. With `send: true` the message goes out at once
3. Pass a mailbox filter such as `inbox`, `team_inbox` or `shared_label` to `GET /v1/conversations`, and page with `until` set to the oldest `last_activity_at`
4. Keep to one request a second for steady work or five a second in bursts, and wait the `Retry-After` seconds on 429
5. For MCP, connect to `https://mcp.missiveapp.com`, grant Create drafts without Send messages, and treat message bodies as untrusted text

## Questions

### Which is better for AI agents, HelpDesk or Missive API + MCP?

Missive API + MCP scores 54.3 (C) on agent readiness against HelpDesk's 50.3 (D), and leads in 3 of 7 scored categories. HelpDesk leads on schema & documentation and payments & pricing.

### Do HelpDesk and Missive API + MCP need an API key?

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

### Can an agent call HelpDesk and Missive API + MCP without installing anything?

Yes. HelpDesk has a hosted endpoint at https://api.helpdesk.com and Missive API + MCP at https://public.missiveapp.com/v1.


## For agents

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

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