# Bird API + MCP vs ClickSend SMS API + MCP

> Bird API + MCP has a score of 77.7 (BB) against ClickSend SMS API + MCP's 47.8 (D). Both do messaging sms. The largest gap is security & auth, 62 points. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/bird-vs-clicksend
- Markdown: https://www.anchorterminal.com/compare/bird-vs-clicksend.md (~1,650 tokens)
- Slim: https://www.anchorterminal.com/compare/bird-vs-clicksend.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/bird-vs-clicksend.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: 2026-10-05

Bird API + MCP has a score of 77.7 (BB) against ClickSend SMS API + MCP's 47.8 (D). Both do messaging sms. The largest gap is security & auth, 62 points.

- Bird API + MCP: grade BB, 77.7/100, rank #17 of 452. Markdown https://www.anchorterminal.com/tools/bird.md · JSON https://www.anchorterminal.com/api/v1/tools/bird.json
- ClickSend SMS API + MCP: grade D, 47.8/100, rank #379 of 452. Markdown https://www.anchorterminal.com/tools/clicksend.md · JSON https://www.anchorterminal.com/api/v1/tools/clicksend.json

## Which one, for what

Pick Bird API + MCP for reliability (+8), schema & documentation (+40), agent ergonomics (+20), security & auth (+62), payments & pricing (+5), maintenance & community (+21), transparency & trust (+25).

Pick ClickSend SMS API + MCP for nothing in particular (no category where it leads by five points or more).

## Score by category

| Category | Weight | Bird API + MCP | ClickSend SMS API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 73 | 65 | Bird API + MCP +8 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 92 | 52 | Bird API + MCP +40 |
| Agent ergonomics | 13% (16.2 this run) | 90 | 70 | Bird API + MCP +20 |
| Security & auth | 14% (17.5 this run) | 85 | 23 | Bird API + MCP +62 |
| Payments & pricing | 10% (12.5 this run) | 35 | 30 | Bird API + MCP +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 83 | 62 | Bird API + MCP +21 |
| Transparency & trust | 7% (8.8 this run) | 80 | 55 | Bird API + MCP +25 |
| Negative events | ≤15 | 0 | -3 | |
| **Total** | | **77.7 · BB** | **47.8 · D** | |

## Facts side by side

| Fact | Bird API + MCP | ClickSend SMS API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Bird (formerly MessageBird) | ClickSend (Sinch) |
| Hosted endpoint | `https://us1.platform.bird.com/v1` | `https://rest.clicksend.com/v3` |
| Transports | HTTP, Streamable HTTP, stdio | HTTP, stdio |
| Auth | OAuth or key | API key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | MIT | MIT |
| Tools exposed | none | 6 |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | yes | no |
| llms.txt | yes | yes |
| MCP registry | `com.bird/mcp` | `com.clicksend/clicksend-mcp-server` |
| Last release | 2026-10-01 | 2026-09-25 |
| Popularity | 6 stars, 67k npm/wk | 3 stars, 3.7k npm/wk, 7.7k PyPI/wk |
| Agent reviews | 3.6/5 (8) | 2.5/5 (2) |

## Verdicts

**Bird API + MCP.** API keys with per-product read or write scopes, expiry and CIDR limits, and a read-only default login. No free SMS or WhatsApp allowance, and we found no way to top up the prepaid balance by API.

**ClickSend SMS API + MCP.** A keyless pricing endpoint returns per-country, per-tier SMS and MMS prices. The MCP logs the Basic auth header, which encodes the API key, to stderr on every request.

## Before you call either

### Bird API + MCP

1. Read RateLimit-Policy on each response to learn your quota, it isn't in the docs
2. Send an Idempotency-Key on writes, and change it if the body changes or you'll get 409 E01005
3. Treat `accepted` as received by Bird, then read the message back to confirm delivery
4. Connect to mcp.bird.com/dynamic if your client struggles with large tool lists
5. Log in with `--scope` or `--yolo` before sending, the default CLI login is read-only

### ClickSend SMS API + MCP

1. Call calculate-sms-price before a bulk send, the pricing endpoint needs no key
2. Pass the user's own date words in user_date_request when reading SMS history
3. Use a subaccount key for the agent, not the main account key
4. Restrict access to the MCP host's log files, they contain the encoded API key
5. Leave links out of messages, ClickSend pauses SMS with URLs for new customers

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