# didlogic Voice API vs Exotel Voice API + MCP (slim)

> didlogic Voice scores 49.8 (D) to Exotel Voice's 39.5 (E) for phone numbers. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/didlogic-vs-exotel-voice.md (~4,200 tokens) · this version ~2,230 tokens · JSON https://www.anchorterminal.com/compare/didlogic-vs-exotel-voice.json · canonical https://www.anchorterminal.com/compare/didlogic-vs-exotel-voice
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-07
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didlogic Voice API scores 49.8 (D) on agent readiness against Exotel Voice API + MCP's 39.5 (E), and leads in 5 of 7 scored categories. Exotel Voice API + MCP leads on reliability. Both do phone numbers.

- didlogic Voice API: D 49.8, rank #1074 of 1486 · https://www.anchorterminal.com/tools/didlogic.min.md
- Exotel Voice API + MCP: E 39.5, rank #1321 of 1486 · https://www.anchorterminal.com/tools/exotel-voice.min.md
- didlogic Voice API, good for Teams that need numbers and SIP termination in many countries and a WebSocket bridge to a voice agent. Ahead on Schema & documentation, 87 against 48; Agent ergonomics, 57 against 40; Security & auth, 46 against 40; Payments & pricing, 38 against 20; Maintenance & community, 38 against 5.
- Exotel Voice API + MCP, good for Voice agents calling Indian numbers that need local compliance and a hosted MCP. Ahead on Reliability, 50 against 26.

| Category | didlogic Voice API | Exotel Voice API + MCP |
| --- | --- | --- |
| Reliability (16%) | 26 | 50 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 87 | 48 |
| Agent ergonomics (13%) | 57 | 40 |
| Security & auth (14%) | 46 | 40 |
| Payments & pricing (10%) | 38 | 20 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 38 | 5 |
| Transparency & trust (7%) | 58 | 60 |

| Fact (where they differ) | didlogic Voice API | Exotel Voice API + MCP |
| --- | --- | --- |
| Vendor | DID Logic PTE. LTD. | Exotel |
| Hosted endpoint | `https://mcp.didlogic.com/mcp` | `https://api.exotel.com/v1` |
| Transports | HTTP, websocket, Streamable HTTP | HTTP, Streamable HTTP |
| Auth | OAuth or key | API key |
| Price for phone numbers | $2 per month (plan) | not published |
| Licence | Proprietary service under the didlogic Terms of Service | MIT |
| Tools exposed | none | 62 |
| llms.txt | yes | no |
| Last release | 2026-09-30 | none |
| Terms restrict benchmarking | not found in the text | yes |
| Arbitration or class-action waiver | yes | not found in the text |
| Popularity | none | 5 stars |
| Agent reviews | none | 2/5 (2) |

Why the edge:
- Schema & documentation, didlogic Voice API +39: didlogic Voice API 87 (Public OpenAPI 3.0.3 file with 53 operations (25). llms.txt and Markdown pages (10). Every operation is described, and the descriptions explain cross-version identifiers and when to poll, such as click-to-call progress (16 of 20). Typed request bodies with required fields and enums in the spec (12 of 15). Examples, a standard error envelope (`{"errors":{"base":[...]}}`) and 401, 403, 404 and 422 responses on most operations (12 of 15). Paths versioned v1 and v2, and release notes dated by month (12 of 15). 25+10+16+12+12+12 = 87.); Exotel Voice API + MCP 48 (No OpenAPI spec found (0). The listing's llms.txt at developer.exotel.com/llms.txt returns 404, as does /docs/llms.txt, and exotel.com has none (0). Reference pages state what each API does, such as Connect two numbers and AgentStream (12 of 20). Form-encoded parameters with types listed, no machine-readable schema (8 of 15). Since February 2026 the docs have an interactive console, multi-language code tabs and an error code dictionary (13 of 15). Versioned v1 and v3 APIs and a public changelog (15).)
- Maintenance & community, didlogic Voice API +33: didlogic Voice API 38 (Release notes dated by month, the newest September 2026 (click-to-call API and WebSocket calls), about 37 to 67 days before this check (20). Entries in August and September and the July self-service API within the 90 days, dated by month only, so fewer than three dated changes can be confirmed (10). Release notes, phone and email support, and a partner programme, with no evidence read of reply times (8 of 15). No official server-side SDK, and the MCP server isn't in the official registry (0). No package to assess (0). 20+10+8+0+0 = 38.); Exotel Voice API + MCP 5 (The developer changelog's newest entry is a docs upgrade on 2026-02-16, and the newest API entry is Gen AI APIs in January 2026, over 180 days ago (0). No dated entries in the last 90 days (0). Support exists, and the ExotelMCP repo has 30 commits and 5 stars. We didn't sample issue replies (5 of 15). No official server SDKs (0). No package to judge (0).)
- Reliability, Exotel Voice API + MCP +24: didlogic Voice API 26 (Graded on the hosted API and MCP server with the hosted lines. The footer's network status page carries no components or incidents, and no other status page was found (0). No readable incident history (5). Rate limits are given only for recording lookups (one a second, one lookup a minute) (5 of 15). Those endpoints document 429 with Retry-After and X-RateLimit headers, with no backoff guidance or idempotency elsewhere, including number purchases and click-to-call (6 of 15). The site claims 99.999 per cent voice uptime, but no SLA was found in the Terms (0). The API and click-to-call carry no beta label, while the new buy experience is rolling out gradually (10). 0+5+5+6+0+10 = 26.); Exotel Voice API + MCP 50 (Statuspage at status.exotel.com with components and history (20). The history feed from 1 August lists 26 planned maintenances and no unplanned incidents. The front page shows emergency maintenance that disrupted calls in Delhi, Gujarat, Karnataka and Mumbai between 18 and 22 September, and a Hyderabad datacentre switch on 29 September for about 1 hour. All regional, so minor only (20). Trial accounts get reduced API limits, but no figures are published (0). No 429 or retry guidance found (0). No SLA found (0). The Voice API is generally available. The MCP server is labelled beta (10).)
- Payments & pricing, didlogic Voice API +18: didlogic Voice API 38 (No x402, MPP or L402 (0). Per-minute call rates and monthly number prices are public by country, marked as indicative (18 of 20). Free test credit with no card, and a 30-day trial number for verified company emails (20). Signup and key creation happen in the portal (0). 0+18+20+0 = 38.); Exotel Voice API + MCP 20 (No x402, MPP or L402 (0). Per-minute rates and plan prices aren't published, they're quoted after signup or by sales (0). Trial with free credit and no card (20). A person signs up in a browser (0).)
- Agent ergonomics, didlogic Voice API +17: didlogic Voice API 57 (Call records take filters and CSV export, and numbers search by country, region and city (18 of 25). Filtering on calls and numbers, with paging not confirmed on every list (14 of 20). One error envelope with field messages and 404 for unknown ids (14 of 20). No idempotency key on purchases or click-to-call. MCP annotations weren't readable without a sign-in (3 of 20). Few required fields, no official SDK beyond the browser Voice SDK (8 of 15). 18+14+14+3+8 = 57.); Exotel Voice API + MCP 40 (Call detail lists exist, and we didn't confirm page-size or field controls (10 of 25). Pagination and filters not confirmed (10 of 20). Error code dictionary (15 of 20). No idempotency key or safe-retry guidance found (0). No official server SDK on npm or PyPI, only a WebRTC SDK. A Connect call needs From, To and CallerId, plus the right regional host (5 of 15).)
- Security & auth, didlogic Voice API +6: didlogic Voice API 46 (Revocable bearer keys created in the portal, each with full account access by the vendor's own warning. MCP OAuth mints a separate key per sign-in (18 of 30). SIP accounts can be limited to allowed IPs, with no read-only key and no confirmation on purchases (6 of 20). Caller audio and SMS are untrusted, and no prompt-injection guidance was found (3 of 15). Call detail records, transaction history and risk-check logs through the API, with no audit log of API calls (7 of 15). ISO/IEC 27001:2022 and ISO 9001 certificates from TÜV AUSTRIA Hellas with registration numbers. No security.txt or bug bounty found (12 of 20). 18+6+3+7+12 = 46.); Exotel Voice API + MCP 40 (HTTP Basic auth with an API key and token, Account SID in the path. No scopes found (20). The hosted MCP's 62 tools can place calls and send SMS, with no readOnlyHint or destructiveHint annotations, though the reference code's README says destructive tools need confirm=true (5 of 20). Calls carry untrusted caller speech, and we found no webhook signing or prompt-injection guidance (0 of 15). Voice v3 added fuller call detail records and log downloads (10 of 15). The privacy policy says Exotel follows ISO 27001 with a certificate available for review. No security.txt, bug bounty or disclosure policy found (5 of 20).)